EP0496091A1 - Valve for compressed or liquefied gas bottles - Google Patents

Valve for compressed or liquefied gas bottles Download PDF

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Publication number
EP0496091A1
EP0496091A1 EP19910121914 EP91121914A EP0496091A1 EP 0496091 A1 EP0496091 A1 EP 0496091A1 EP 19910121914 EP19910121914 EP 19910121914 EP 91121914 A EP91121914 A EP 91121914A EP 0496091 A1 EP0496091 A1 EP 0496091A1
Authority
EP
European Patent Office
Prior art keywords
valve
gas
bottle
tap according
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19910121914
Other languages
German (de)
French (fr)
Other versions
EP0496091B1 (en
Inventor
Zivko Paravigna
Fernand Wolff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Luxembourg Patent Co SA
Original Assignee
Luxembourg Patent Co SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luxembourg Patent Co SA filed Critical Luxembourg Patent Co SA
Publication of EP0496091A1 publication Critical patent/EP0496091A1/en
Application granted granted Critical
Publication of EP0496091B1 publication Critical patent/EP0496091B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators
    • F17C2205/0385—Constructional details of valves, regulators in blocks or units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/048—Methods for emptying or filling by maintaining residual pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/88054—Direct response normally closed valve limits direction of flow

Definitions

  • the present invention relates to a valve for compressed or liquefied gas bottles, comprising a body designed to be screwed onto a gas bottle, an internal closure member with a sealing surface at the intersection of a gas outlet passage. and a channel in communication with an intake passage, an external operating means connected, through the body, to said closure member to move the latter, against the action of elastic means, between an open position and a closed position and a regulator for controlling the gas flow pressure in the open position of the closing member.
  • the invention relates more particularly to a valve with a pressure regulator ensuring a pre-expansion of the gas so as not to be obliged, when filling a bottle, to have to take account of the operating pressure or the performance of the regulators provided in the use circuits.
  • This allows, in particular to further compress the gas in the bottle during filling, in other words, with equal capacity of the bottle, to increase its content, that is to say, the quantity of gas, or, with equal content , to reduce the size of the bottle.
  • US Patent 4,844,111 proposes a regulator which is provided with a second orifice serving only for filling the bottle and communicating directly with the interior thereof.
  • This regulator has the drawback that, when filling the bottle, it is necessary to close the gas withdrawal orifice, and vice versa, when racking, the filling opening must be closed.
  • Valves with neutralizable regulators have also already been proposed comprising relatively complicated means for neutralizing the action of the regulator by blocking the latter in a non-operative position during filling of the bottle.
  • the object of the present invention is to provide a new tap of the type described in the preamble which allows the filling of the bottle and the withdrawal of gas through the same opening.
  • the valve proposed by the present invention is essentially characterized by a bypass line through the body of the valve, between the intake passage and the channel, shorting the regulator and provided with means allowing the flow filling gas from the outlet passage to the intake passage and preventing reverse gas flow.
  • Said means are preferably constituted by a non-return valve.
  • Another non-return valve is provided between the regulator and the closing member. This non-return valve allows the withdrawal of gases through the regulator but prevents the penetration of gases into the regulator during filling. This valve does not normally allow the gas bottle to be emptied beyond a lower pressure threshold corresponding to the valve closing pressure. To be able nevertheless to offer, if necessary, the possibility of completely emptying the bottle, for example by connecting it to a vacuum pump, the valve is preferably neutralizable from the outside by mechanical or magnetic means.
  • the valve also includes a safety valve, known per se. This is preferably provided in a fitting through which the outlet passage passes in a location such that it is masked by a first adaptable connector on the connection for filling the cylinder and that it is not masked by a second connector adaptable on the same connection for the withdrawal of gases.
  • a safety valve known per se. This is preferably provided in a fitting through which the outlet passage passes in a location such that it is masked by a first adaptable connector on the connection for filling the cylinder and that it is not masked by a second connector adaptable on the same connection for the withdrawal of gases.
  • FIG. 1 shows a block diagram of the two operating modes of a valve according to the present invention
  • FIG. 2 shows an axial section through an embodiment of a tap operating according to the principle of FIG. 1
  • FIG. 2a shows the position of the safety valve
  • Figure 3 shows the details of a preferred embodiment of a check valve.
  • the active elements of the valve are arranged between an outlet 60 of the valve and an inlet passage 62 in communication with the inside a gas cylinder not shown.
  • the reference 64 designates the valve closing member
  • the reference 66 designates a regulator, known per se, designed, for example, to reduce the gas pressure of the filling pressure, in this case for example the 'order of 300.105 Pa from the bottle to the pressure, for example of the order of 90 to 120.105 Pa of a user circuit.
  • the reference 68 designates a safety valve, known per se, designed to open in the event of overpressure, for example due to a faulty operation of the regulator.
  • the references 70 and 72 each designate a non-return valve.
  • the drawing off of the gas under pressure takes place in normal operation, in a manner known per se, by the line 74 following the arrows in dashed lines through the regulator 66 and the open closing member 64.
  • the novelty lies in the layout 76 comprising a bypass line bypassing the reducing valve 66 and connecting the outlet 60 to the inlet 62 through the closing member 64 leaving side of the regulator 66.
  • This trace 76 represented by the arrows in solid lines therefore allows the filling of the bottle through the open closing member 64, the pressure of the filling gas allowing the opening of the non-return valve. 70.
  • the non-return valve 72 prevents the filling gas from flowing through the pressure reducer 66.
  • the non-return valve 70 prevents, during the withdrawal, the gases from following the path 76 and the obliges to take the passage through the regulator 66 and its non-return valve 72 which opens under the pressure of the expanded gases.
  • This valve has a body 78 whose lower part is provided with an external thread 79 allowing it to be screwed onto a gas cylinder not shown.
  • the lower part of the body 78 is traversed by an intake pipe 62 in communication with the interior of the bottle, while the upper part of the body 78 is provided with a radial outlet passage 60 through a connector 80 on which can be connected either a gas use circuit or a cylinder filling circuit.
  • the central part of the body 78 has radial housings for receiving the active elements illustrated in FIG. 1, namely the pressure reducer 66 as well as the non-return valves 70 and 72.
  • the closing member 64 is located in the upper part of the body 78 of the tap.
  • This closing member 64 is constituted by a piston 82, the lower part of which comprises a sealing pad 84 cooperating with a seat 86 surrounding an axial channel 88.
  • the outlet passage 60 is in communication with the annular space surrounding the seat 86.
  • FIG. 2 shows the handwheel 90 in the closed position in which the pellet 84 is applied in a sealed manner to its seat 86
  • an appropriate mechanical means such as a coil spring
  • the intake line 62 can communicate with the channel 88 through the pressure reducer 66, the line 74 and the non-return valve 72, while the channel 88 can also be put in communication with the intake line 62 through the bypass line 76 and the non-return valve 70.
  • the two non-return valves 70 and 72 are identical to each other. They essentially consist of a piston 94 sliding in a cylindrical axial housing of a plug 100 screwed into a suitable fitting of the body 78 of the valve.
  • the piston 94 has a frustoconical inner head provided with a seal 98 intended to cooperate with a corresponding seat 96 of the valve body.
  • the piston 94 is influenced by a calibrated interior spring 102 whose action tends to hold the piston 94 in a sealed manner on its seat 96.
  • the piston 94 is, moreover, axially pierced at 104 so as to ensure equalization pressure on either side of piston 94.
  • the regulator 66 comprises, in a manner known per se, a piston 106 mounted radially in a cylindrical bore of the body 78 with a seal 108 capable of closing a radial passage 110 between the housing of the piston 106 and the intake pipe 62.
  • the piston 106 is subjected, in the direction of its opening to the action of a spring 112 which is calibrated to ensure a determined degree of relaxation.
  • the section on the inside of the piston 106 is slightly smaller than the section on the outside thanks to a peripheral shoulder 114 and a corresponding enlargement of the bore in which the piston 106 slides.
  • This piston 106 is provided with an axial channel 116 establishing communication between its two opposite bases.
  • the tap is also provided with a safety valve 68 which, in the embodiment shown, is provided in the connector 80 (see FIG. 2a).
  • This valve is constituted, in a manner known per se, by a collapsible membrane when the pressure of the gas supplied to the use network exceeds a predetermined safety threshold, for example in the event of a malfunction of the regulator 66, this to release the gases. and avoid the explosion of the bottle.
  • the valve 68 is preferably provided in a cylindrical section of the connector 82 between two successive conical seats 120 and 122.
  • the gas pressure is exerted on the head of the piston 94 of the non-return valve 72, but, as a result of the axial opening 104 in the piston, the pressure is equalized on either side of the piston and as a result of the higher section on the side of the spring 102 the differential pressure of the gas on the piston 94 keeps the valve 72 in the closed position.
  • the valve 72 therefore exercises its non-return function during filling. Admittedly, the gas under pressure could not pass through the regulator 66 passing through the line 74 since the passage through a regulator is always a one-way, but the valve 72 prevents the high pressure of the filling gas being exerted on the regulator and causes rapid wear of its seal 108 as a result of the high force which applies it to its seat.
  • the gas pressure is exerted on the peripheral region of the neck 96 of the piston 94 and lifts it from its seat against the action of the spring 102 so that the gas under pressure can flow freely through the open non-return valve 70 and the passage 62 towards the interior of the bottle.
  • a connector (not shown) provided with a seal is screwed onto the connector 80, this time being applied in a sealed manner to the seat 122 of the connector 80 or to the inlet. of the fitting 80 so that the safety valve 68 is subjected to the action of the expanded gas leaving the valve and can exercise its function in the event of abnormal overpressure.
  • the non-return valve 70 functions in the same way as the valve 72 during filling, that is to say that the high pressure of the gas is exerted, thanks to the passage 104 of the piston 92 on both sides of it and keeps it in the closed position, thus forcing the gas under pressure to pass through the regulator 66.
  • FIG. 3 shows, as a variant, the medallion of FIG. 2 and illustrates a exemplary embodiment of a neutralizable non-return valve.
  • the piston 130 which forms the closure member is slidably mounted in the cylindrical housing of a plug 132 which is screwed into the body 78 of the valve.
  • the housing of the shutter member 130 has an inner retaining edge 134 cooperating with a peripheral shoulder 136 of the shutter member 130.
  • shutter member 130 with a rod axially and sealingly passing through the plug and capable of be actuated from the outside by mechanical or magnetic means to lift the member 130 from its seat against the action of its spring.
  • valve 70 neutralizable. It is however preferable to provide for the neutralization of the valve 72 since the latter is located downstream of the regulator 66 and does not undergo, like the valve 70, the high pressure of the gas in the bottle, this to counter any possibility of neglect or forgetting to return the non-return valve to service after neutralization.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Vacuum Packaging (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)

Abstract

The valve comprises a shutting device (64) between an outlet passage (60) for the gases and an inlet passage (62), an external switching means connected to the said shutting device (64) in order to move the latter between an open position and a shut position and a pressure reducing valve (66) for controlling the gas flow pressure when the shutting device (64) is in the open position. …<??>In order to allow the filling of the bottle and the off-take of the gas through the same opening, a pipe (76) is provided in parallel between the inlet passage (62) and the outlet passage (60) bypassing the pressure reducing valve (64) and is equipped with means allowing the flow of filling gas from the outlet passage (60) towards the inlet passage (62) and preventing the flow of the gases in the opposite direction. …<IMAGE>…

Description

La présente invention concerne un robinet pour bouteilles de gaz comprimés ou liquéfiés, comprenant un corps conçu pour être vissé sur une bouteille de gaz, un organe de fermeture intérieur avec une surface d'étanchéité à l'intersection d'un passage de sortie des gaz et d'un canal en communication avec un passage d'admission, un moyen de manoeuvre extérieur relié, à travers le corps, audit organe de fermeture pour déplacer celui-ci, contre l'action de moyens élastiques, entre une position d'ouverture et une position de fermeture et un détendeur pour le contrôle de la pression d'écoulement du gaz en position ouverte de l'organe de fermeture.The present invention relates to a valve for compressed or liquefied gas bottles, comprising a body designed to be screwed onto a gas bottle, an internal closure member with a sealing surface at the intersection of a gas outlet passage. and a channel in communication with an intake passage, an external operating means connected, through the body, to said closure member to move the latter, against the action of elastic means, between an open position and a closed position and a regulator for controlling the gas flow pressure in the open position of the closing member.

Quoique n'y étant pas limitée, l'invention vise plus particulièrement un robinet avec un détendeur assurant une prédétente du gaz afin de ne pas être obligé, lors du remplissage d'une bouteille, de devoir tenir compte de la pression d'utilisation ou des performances des détendeurs prévus dans les circuits d'utilisation. Ceci permet, notamment de comprimer davantage le gaz dans la bouteille lors du remplissage, autrement dit, à contenance égale de la bouteille, d'augmenter son contenu, c'est-à-dire, la quantité de gaz, ou, à contenu égal, de réduire la grandeur de la bouteille.Although not limited thereto, the invention relates more particularly to a valve with a pressure regulator ensuring a pre-expansion of the gas so as not to be obliged, when filling a bottle, to have to take account of the operating pressure or the performance of the regulators provided in the use circuits. This allows, in particular to further compress the gas in the bottle during filling, in other words, with equal capacity of the bottle, to increase its content, that is to say, the quantity of gas, or, with equal content , to reduce the size of the bottle.

Malheureusement, le montage des détendeurs directement sur les bouteilles nécessite, le plus souvent, leur démontage en vue du remplissage de la bouteille, car le remplissage ne peut être effectué à travers un détendeur, celui-ci ne permettant qu'une circulation à sens unique du gaz.Unfortunately, the mounting of regulators directly on the bottles requires, most often, their disassembly for the filling of the bottle, because the filling cannot be carried out through a regulator, this allowing only one-way circulation some gas.

Pour y remédier, le brevet US 4,844,111 propose un détendeur qui est pourvu d'un second orifice ne servant qu'au remplissage de la bouteille et communiquant directement avec l'intérieur de celle-ci. Ce détendeur présente l'inconvénient que, lors du remplissage de la bouteille, il faut obturer l'orifice de soutirage du gaz, et vice versa, lors du soutirage, il faut obturer l'orifice de remplissage.To remedy this, US Patent 4,844,111 proposes a regulator which is provided with a second orifice serving only for filling the bottle and communicating directly with the interior thereof. This regulator has the drawback that, when filling the bottle, it is necessary to close the gas withdrawal orifice, and vice versa, when racking, the filling opening must be closed.

On a également déjà proposé des robinets à détendeurs neutralisables comprenant des moyens relativement compliqués pour neutraliser l'action du détendeur en bloquant celui-ci dans une position non opérative lors du remplissage de la bouteille.Valves with neutralizable regulators have also already been proposed comprising relatively complicated means for neutralizing the action of the regulator by blocking the latter in a non-operative position during filling of the bottle.

Le but de la présente invention est de proposer un nouveau robinet du genre décrit dans le préambule qui permet le remplissage de la bouteille et le soutirage du gaz à travers la même ouverture.The object of the present invention is to provide a new tap of the type described in the preamble which allows the filling of the bottle and the withdrawal of gas through the same opening.

Pour atteindre cet objectif, le robinet proposé par la présente invention est essentiellement caractérisé par une conduite en dérivation à travers le corps du robinet, entre le passage d'admission et le canal, court-circuitant le détendeur et pourvu de moyens permettant l'écoulement de gaz de remplissage du passage de sortie vers le passage d'admission et empêchant l'écoulement de gaz en sens inverse.To achieve this objective, the valve proposed by the present invention is essentially characterized by a bypass line through the body of the valve, between the intake passage and the channel, shorting the regulator and provided with means allowing the flow filling gas from the outlet passage to the intake passage and preventing reverse gas flow.

Lesdits moyens sont constitués, de préférence, par un clapet anti-retour. Un autre clapet anti-retour est prévu entre le détendeur et l'organe de fermeture. Ce clapet anti-retour permet le soutirage des gaz à travers le détendeur mais empêche la pénétration des gaz dans le détendeur lors du remplissage. Ce clapet ne permet normalement pas de vider la bouteille de gaz au-delà d'un seuil de pression inférieur correspondant à la pression de fermeture du clapet. Pour pouvoir néanmoins offrir, en cas de besoin, la possibilité de vider complètement la bouteille, par exemple en la branchant sur une pompe à vide, le clapet est, de préférence, neutralisable depuis l'extérieur par des moyens mécaniques ou magnétiques.Said means are preferably constituted by a non-return valve. Another non-return valve is provided between the regulator and the closing member. This non-return valve allows the withdrawal of gases through the regulator but prevents the penetration of gases into the regulator during filling. This valve does not normally allow the gas bottle to be emptied beyond a lower pressure threshold corresponding to the valve closing pressure. To be able nevertheless to offer, if necessary, the possibility of completely emptying the bottle, for example by connecting it to a vacuum pump, the valve is preferably neutralizable from the outside by mechanical or magnetic means.

Le robinet comporte également une soupape de sécurité, connue en soi. Celle-ci est, de préférence, prévue dans un raccord traversé par le passage de sortie à un endroit tel qu'elle soit masquée par un premier connecteur adaptable sur le raccord pour le remplissage de la bouteille et qu'elle ne soit pas masquée par un second connecteur adaptable sur le même raccord pour le soutirage des gaz.The valve also includes a safety valve, known per se. This is preferably provided in a fitting through which the outlet passage passes in a location such that it is masked by a first adaptable connector on the connection for filling the cylinder and that it is not masked by a second connector adaptable on the same connection for the withdrawal of gases.

D'autres particularités et caractéristiques de l'invention ressortiront de la description détaillée d'un mode de réalisation avantageux présenté ci-dessous, à titre d'illustration, en reférence aux figures annexées dans lesquelles:
   la figure 1 montre un schéma synoptique des deux modes de fonctionnement d'un robinet selon la présente invention;
   la figure 2 montre une coupe axiale à travers un mode d'exécution d'un robinet fonctionnant selon le principe de la figure 1, la figure 2a montre la position de la soupape de sécurité et
   la figure 3 montre les détails d'un mode d'exécution préféré d'un clapet anti-retour.Other particularities and characteristics of the invention will emerge from the detailed description of an advantageous embodiment presented below, by way of illustration, with reference to the appended figures in which:
Figure 1 shows a block diagram of the two operating modes of a valve according to the present invention;
FIG. 2 shows an axial section through an embodiment of a tap operating according to the principle of FIG. 1, FIG. 2a shows the position of the safety valve and
Figure 3 shows the details of a preferred embodiment of a check valve.

On va d'abord expliquer le principe de fonctionnement du robinet selon la présente invention en référence au schéma synoptique de la figure 1. Les éléments actifs du robinet sont arrangés entre une sortie 60 du robinet et un passage d'admission 62 en communication avec l'intérieur d'une bouteille de gaz non représentée. La référence 64 désigne l'organe de fermeture du robinet, alors que la référence 66 désigne un détendeur, connu en soi, conçu, par exemple, pour réduire la pression du gaz de la pression de remplissage, en l'occurence par exemple de l'ordre de 300.10⁵ Pa de la bouteille jusqu'à la pression, par exemple de l'ordre de 90 à 120.10⁵ Pa d'un circuit d'utilisation. La référence 68 désigne une soupape de sécurité, connue en soi, conçue pour s'ouvrir en cas de surpression, par exemple dû à un fonctionnement défectueux du détendeur. Les références 70 et 72 désignent chacune un clapet anti-retour.We will first explain the operating principle of the valve according to the present invention with reference to the block diagram of Figure 1. The active elements of the valve are arranged between an outlet 60 of the valve and an inlet passage 62 in communication with the inside a gas cylinder not shown. The reference 64 designates the valve closing member, while the reference 66 designates a regulator, known per se, designed, for example, to reduce the gas pressure of the filling pressure, in this case for example the 'order of 300.10⁵ Pa from the bottle to the pressure, for example of the order of 90 to 120.10⁵ Pa of a user circuit. The reference 68 designates a safety valve, known per se, designed to open in the event of overpressure, for example due to a faulty operation of the regulator. The references 70 and 72 each designate a non-return valve.

Le soutirage du gaz sous pression s'opère en fonctionnement normal, de façon connue en soi, par le tracé 74 suivant les flèches en traits interrompus à travers le détendeur 66 et l'organe de fermeture ouvert 64. La nouveauté réside dans le tracé 76 comprenant une conduite en dérivation court-circuitant le détendeur 66 et reliant la sortie 60 à l'admission 62 à travers l'organe de fermeture 64 en laissant de côté le détendeur 66. Ce tracé 76 représenté par les flèches en traits pleins permet, par conséquent, le remplissage de la bouteille à travers l'organe de fermeture ouvert 64, la pression du gaz de remplissage permettant l'ouverture du clapet anti-retour 70. Par contre, le clapet anti-retour 72 empêche le gaz de remplissage de circuler à travers le détendeur 66. Le clapet anti-retour 70, de son côté, empêche, lors du soutirage, les gaz de suivre le tracé 76 et les oblige à emprunter le passage à travers le détendeur 66 et son clapet anti-retour 72 qui s'ouvre sous la pression des gaz détendus.The drawing off of the gas under pressure takes place in normal operation, in a manner known per se, by the line 74 following the arrows in dashed lines through the regulator 66 and the open closing member 64. The novelty lies in the layout 76 comprising a bypass line bypassing the reducing valve 66 and connecting the outlet 60 to the inlet 62 through the closing member 64 leaving side of the regulator 66. This trace 76 represented by the arrows in solid lines therefore allows the filling of the bottle through the open closing member 64, the pressure of the filling gas allowing the opening of the non-return valve. 70. On the other hand, the non-return valve 72 prevents the filling gas from flowing through the pressure reducer 66. The non-return valve 70, on the other hand, prevents, during the withdrawal, the gases from following the path 76 and the obliges to take the passage through the regulator 66 and its non-return valve 72 which opens under the pressure of the expanded gases.

On va maintenant décrire, en référence aux figures 2 et 3, un mode d'exécution avantageux d'un robinet opérant selon le principe de la figure 1. Ce robinet comporte un corps 78 dont la partie inférieure est pourvue d'un filet extérieur 79 lui permettant d'être vissé sur une bouteille de gaz non représentée. La partie inférieure du corps 78 est traversée par une conduite d'admission 62 en communication avec l'intérieur de la bouteille, alors que la partie supérieure du corps 78 est pourvue d'un passage radial de sortie 60 à travers un raccord 80 sur lequel peut être connecté soit un circuit d'utilisation de gaz, soit un circuit de remplissage de la bouteille. La partie centrale du corps 78 comporte des logements radiaux pour recevoir les éléments actifs illustrés sur la figure 1, à savoir le détendeur 66 ainsi que les clapets anti-retour 70 et 72. L'organe de fermeture 64 se trouve dans la partie supérieure du corps 78 du robinet. Cet organe de fermeture 64 est constitué par un piston 82 dont la partie inférieure comporte une pastille d'étanchéité 84 coopérant avec un siège 86 entourant un canal axial 88. Le passage de sortie 60 est en communication avec l'espace annulaire entourant le siège 86.We will now describe, with reference to Figures 2 and 3, an advantageous embodiment of a valve operating according to the principle of Figure 1. This valve has a body 78 whose lower part is provided with an external thread 79 allowing it to be screwed onto a gas cylinder not shown. The lower part of the body 78 is traversed by an intake pipe 62 in communication with the interior of the bottle, while the upper part of the body 78 is provided with a radial outlet passage 60 through a connector 80 on which can be connected either a gas use circuit or a cylinder filling circuit. The central part of the body 78 has radial housings for receiving the active elements illustrated in FIG. 1, namely the pressure reducer 66 as well as the non-return valves 70 and 72. The closing member 64 is located in the upper part of the body 78 of the tap. This closing member 64 is constituted by a piston 82, the lower part of which comprises a sealing pad 84 cooperating with a seat 86 surrounding an axial channel 88. The outlet passage 60 is in communication with the annular space surrounding the seat 86.

La partie supérieure du robinet comporte un volant de manoeuvre 90 agissant par l'intermédiaire d'une tige 92 sur le piston 82. La figure 2 montre le volant 90 en position fermée dans laquelle la pastille 84 est appliquée de manière étanche sur son siège 86. Lorsque le volant de manoeuvre 90 est desserré, le piston 82 est remonté sous l'action d'un moyen mécanique approprié tel qu'un ressort à boudin, soulevant ainsi la pastille 84 de son siège 86 et établissant une communication entre le canal 88 et le passage de sortie 60.The upper part of the valve comprises an operating handwheel 90 acting by means of a rod 92 on the piston 82. FIG. 2 shows the handwheel 90 in the closed position in which the pellet 84 is applied in a sealed manner to its seat 86 When the handwheel 90 is loosened, the piston 82 is raised under the action of an appropriate mechanical means such as a coil spring, thereby lifting the pellet 84 from its seat 86 and establishing communication between the channel 88 and the outlet passage 60.

Conformément aux principes de la figure 1, la conduite d'admission 62 peut communiquer avec le canal 88 à travers le détendeur 66, la conduite 74 et le clapet anti-retour 72, tandis que le canal 88 peut également être mis en communication avec la conduite d'admission 62 à travers la conduite en dérivation 76 et le clapet anti-retour 70.In accordance with the principles of FIG. 1, the intake line 62 can communicate with the channel 88 through the pressure reducer 66, the line 74 and the non-return valve 72, while the channel 88 can also be put in communication with the intake line 62 through the bypass line 76 and the non-return valve 70.

Dans l'exemple représenté les deux clapets anti-retour 70 et 72 sont identiques l'un à l'autre. Ils sont constitués essentiellement par un piston 94 coulissant dans un logement axial cylindrique d'un bouchon 100 vissé dans un raccord approprié du corps 78 du robinet. Le piston 94 présente une tête intérieure tronconique pourvue d'un joint d'étanchéité 98 destiné à coopérer avec un siège correspondant 96 du corps du robinet. Le piston 94 subit l'influence d'un ressort intérieur calibré 102 dont l'action tend à maintenir le piston 94 de manière étanche sur son siège 96. Le piston 94 est, par ailleurs, percé axialement en 104 de manière à assurer une égalisation de pression de part et d'autre du piston 94.In the example shown, the two non-return valves 70 and 72 are identical to each other. They essentially consist of a piston 94 sliding in a cylindrical axial housing of a plug 100 screwed into a suitable fitting of the body 78 of the valve. The piston 94 has a frustoconical inner head provided with a seal 98 intended to cooperate with a corresponding seat 96 of the valve body. The piston 94 is influenced by a calibrated interior spring 102 whose action tends to hold the piston 94 in a sealed manner on its seat 96. The piston 94 is, moreover, axially pierced at 104 so as to ensure equalization pressure on either side of piston 94.

Le détendeur 66 comporte, de façon connue en soi, un piston 106 monté radialement dans un alésage cylindrique du corps 78 avec un joint d'étanchéité 108 susceptible d'obturer un passage radial 110 entre le logement du piston 106 et la conduite d'admission 62. Le piston 106 est soumis, dans le sens de son ouverture à l'action d'un ressort 112 qui est calibré pour assurer un degré de détente déterminée. La section du côté intérieur du piston 106 est légèrement plus petite que la section du côté extérieur grâce à un épaulement périphérique 114 et un élargissement correspondant de l'alésage dans lequel coulisse le piston 106. Ce piston 106 est pourvu d'un canal axial 116 établissant une communication entre ses deux bases opposées.The regulator 66 comprises, in a manner known per se, a piston 106 mounted radially in a cylindrical bore of the body 78 with a seal 108 capable of closing a radial passage 110 between the housing of the piston 106 and the intake pipe 62. The piston 106 is subjected, in the direction of its opening to the action of a spring 112 which is calibrated to ensure a determined degree of relaxation. The section on the inside of the piston 106 is slightly smaller than the section on the outside thanks to a peripheral shoulder 114 and a corresponding enlargement of the bore in which the piston 106 slides. This piston 106 is provided with an axial channel 116 establishing communication between its two opposite bases.

Le robinet est également pourvu d'une soupape de sécurité 68 qui, dans le mode de réalisation représenté, est prévue dans le raccord 80 (voir figure 2a). Cette soupape est constituée, de manière connue en soi, par une membrane éclatable lorsque la pression du gaz délivré vers le réseau d'utilisation dépasse un seuil prédéterminé de sécurité, par exemple en cas de mauvais fonctionnement du détendeur 66, ceci pour libérer les gaz et éviter l'explosion de la bouteille. La soupape 68 est de préférence prévue dans une section cylindrique du raccord 82 entre deux sièges coniques successifs 120 et 122.The tap is also provided with a safety valve 68 which, in the embodiment shown, is provided in the connector 80 (see FIG. 2a). This valve is constituted, in a manner known per se, by a collapsible membrane when the pressure of the gas supplied to the use network exceeds a predetermined safety threshold, for example in the event of a malfunction of the regulator 66, this to release the gases. and avoid the explosion of the bottle. The valve 68 is preferably provided in a cylindrical section of the connector 82 between two successive conical seats 120 and 122.

On va maintenant décrire le fonctionnement du robinet pour les deux modes de fonctionnement expliqués en référence à la figure 1. En vue du remplissage d'une bouteille avec un gaz sous haute pression, par exemple 300.10⁵ Pa on visse sur le raccord 80 un connecteur non représenté, pourvu d'un joint d'étanchéité, qui, lorsque le connecteur est vissé sur le raccord 80 s'appuie de manière étanche sur le siège intérieur 120. Ceci évite que la soupape de sécurité 68 ne soit exposée aux gaz de remplissage sous pression élevée, à laquelle sa membrane éclaterait. Après l'ouverture du volant de manoeuvre 90 le gaz sous pression s'écoule dans le canal axial 88 et la conduite en dérivation 76. La pression du gaz s'exerce sur la tête du piston 94 du clapet anti-retour 72, mais, par suite de l'ouverture axiale 104 dans le piston, la pression s'égalise de part et d'autre du piston et par suite de la section plus élevée du côté du ressort 102 la pression différentielle du gaz sur le piston 94 maintient le clapet 72 en position fermée. Le clapet 72 exerce, par conséquent, sa fonction anti-retour lors du remplissage. Certes, le gaz sous pression ne pourrait pas traverser le détendeur 66 en passant par la conduite 74 étant donné que le passage à travers un détendeur est toujours un sens unique, mais le clapet 72 évite que la pression élevée du gaz de remplissage s'exerce sur le détendeur et provoque une usure rapide de son joint 108 par suite de la force élevée qui l'applique sur son siège.We will now describe the operation of the valve for the two operating modes explained with reference to Figure 1. In order to fill a cylinder with a gas under high pressure, for example 300.10 300 Pa we screw on the connector 80 a connector not shown, provided with a seal, which, when the connector is screwed on the fitting 80 is pressed in a sealed manner on the interior seat 120. This prevents the safety valve 68 from being exposed to the filling gases under high pressure, at which its membrane would burst. After the opening of the handwheel 90, the pressurized gas flows in the axial channel 88 and the bypass pipe 76. The gas pressure is exerted on the head of the piston 94 of the non-return valve 72, but, as a result of the axial opening 104 in the piston, the pressure is equalized on either side of the piston and as a result of the higher section on the side of the spring 102 the differential pressure of the gas on the piston 94 keeps the valve 72 in the closed position. The valve 72 therefore exercises its non-return function during filling. Admittedly, the gas under pressure could not pass through the regulator 66 passing through the line 74 since the passage through a regulator is always a one-way, but the valve 72 prevents the high pressure of the filling gas being exerted on the regulator and causes rapid wear of its seal 108 as a result of the high force which applies it to its seat.

Dans le clapet anti-retour 70 la pression du gaz s'exerce sur la région périphérique du col 96 du piston 94 et soulève celui-ci de son siège contre l'action du ressort 102 de sorte que le gaz sous pression peut s'écouler librement à travers le clapet anti-retour ouvert 70 et le passage 62 vers l'intérieur de la bouteille.In the non-return valve 70 the gas pressure is exerted on the peripheral region of the neck 96 of the piston 94 and lifts it from its seat against the action of the spring 102 so that the gas under pressure can flow freely through the open non-return valve 70 and the passage 62 towards the interior of the bottle.

Dès que la pression de remplissage tombe, par exemple suite à la fermeture du volant de manoeuvre 90, endessous de la pression exercée par le ressort 102 sur le clapet anti-retour 70, celui-ci se ferme automatiquement. Un calibrage approprié du ressort 102 permet de fixer ce seuil de fermeture du clapet 70 à une pression déterminée, par exemple de l'ordre de 4.10⁵ Pa.As soon as the filling pressure falls, for example following the closing of the handwheel 90, below the pressure exerted by the spring 102 on the non-return valve 70, the latter closes automatically. Appropriate calibration of the spring 102 makes it possible to fix this threshold for closing the valve 70 at a determined pressure, for example of the order of 4.10⁵ Pa.

Pour brancher la bouteille sur un circuit d'utilisation on visse sur le raccord 80 un connecteur non représenté pourvu d'un joint d'étanchéité qui, cette fois, est appliqué de manière étanche sur le siège 122 du raccord 80 ou sur l'entrée du raccord 80 de façon à ce que la soupape de sécurité 68 soit soumise à l'action du gaz détendu quittant le robinet et puisse exercer sa fonction en cas de surpression anormale.To connect the bottle to a user circuit, a connector (not shown) provided with a seal is screwed onto the connector 80, this time being applied in a sealed manner to the seat 122 of the connector 80 or to the inlet. of the fitting 80 so that the safety valve 68 is subjected to the action of the expanded gas leaving the valve and can exercise its function in the event of abnormal overpressure.

Lors du soutirage, le clapet anti-retour 70 fonctionne de la même manière que le clapet 72 lors du remplissage, c'est-à-dire que la pression élevée du gaz s'exerce, grâce au passage 104 du piston 92 sur les deux côtés de celui-ci et le maintient en position fermée, obligeant ainsi le gaz sous pression de traverser le détendeur 66.During withdrawal, the non-return valve 70 functions in the same way as the valve 72 during filling, that is to say that the high pressure of the gas is exerted, thanks to the passage 104 of the piston 92 on both sides of it and keeps it in the closed position, thus forcing the gas under pressure to pass through the regulator 66.

Etant donné que la pression élevée du gaz quittant la bouteille s'exerce de part et d'autre sur le piston 106 du détendeur 66 et que la section extérieure de celui-ci est plus grande que sa section intérieure le gaz exerce une pression différentielle sur le piston 106 dans le sens de sa fermeture. La position d'équilibre résultant de l'action de cette poussée différentielle et de la poussée du ressort 112 détermine ainsi le degré de détente des gaz qui est déterminé par un calibrage approprié du ressort 112, généralement de l'ordre de 90 à 120.10⁵ Pa. Le gaz détendu à cette pression réduite s'écoule à travers la conduite 74 pour ouvrir le clapet anti-retour 72 de la même manière que le clapet 70 s'ouvre sous l'action de la pression du gaz de remplissage. Le gaz détendu peut, par conséquent, s'écouler à travers le clapet anti-retour 72 ouvert dans le circuit d'utilisation, à condition que l'organe de fermeture 64 soit ouvert.Since the high pressure of the gas leaving the cylinder is exerted on both sides on the piston 106 of the regulator 66 and that the outside section of the latter is larger than its inside section the gas exerts a differential pressure on the piston 106 in the direction of its closure. The equilibrium position resulting from the action of this differential thrust and the thrust of the spring 112 thus determines the degree of relaxation of the gases which is determined by an appropriate calibration of the spring 112, generally of the order of 90 to 120.10⁵ Pa. The gas expanded at this reduced pressure flows through line 74 to open the non-return valve 72 in the same way as the valve 70 opens under the action of the pressure of the filling gas. The expanded gas can, therefore, flow through the non-return valve 72 open in the operating circuit, provided that the closure member 64 is open.

Lorsque la pression dans la bouteille de gaz tombe endessous de la pression de détente à laquelle est réglée le détendeur 66 celui-ci cesse de produire ses effets sous l'action de son ressort 112 qui le maintient en position ouverte de sorte que le gaz, ne nécessitant plus de détente, peut s'écouler librement à travers la conduite 74 et le clapet ouvert 72.When the pressure in the gas cylinder falls below the expansion pressure to which the regulator 66 is adjusted, the latter ceases to produce its effects under the action of its spring 112 which keeps it in the open position so that the gas, no longer requiring expansion, can flow freely through the pipe 74 and the open valve 72.

Lorsque la pression dans la bouteille de gaz tombe à une valeur correspondant à la force exercée par le ressort du clapet anti-retour 72 la pression du gaz n'est plus en mesure de maintenir le clapet anti-retour ouvert de sorte que celui-ci se ferme sous l'action de son ressort et arrête l'écoulement du gaz vers le circuit d'utilisation. Cette pression minimale qui dépend du calibrage du ressort du clapet anti-retour 72 peut être de l'ordre de 1,5 à 2.10⁵ Pa. Autrement dit, le clapet 72, outre ses fonctions intrinsèques de ne permettre qu'un écoulement du gaz à sens unique, empêche une vidange complète de la bouteille de gaz au-delà d'une pression résiduelle correspondant à la valeur de calibrage de son ressort. Le maintien d'une telle pression minimale de gaz dans la bouteille a l'avantage d'empêcher la pénétration d'impuretés et d'humidité dans la bouteille avant un nouveau remplissage, même lorsque l'on a oublié de fermer l'organe de fermeture principale 64.When the pressure in the gas cylinder falls to a value corresponding to the force exerted by the spring of the non-return valve 72 the pressure of the gas is no longer able to keep the non-return valve open so that it closes under the action of its spring and stops the flow of gas to the operating circuit. This minimum pressure which depends on the calibration of the spring of the non-return valve 72 can be of the order of 1.5 to 2.10⁵ Pa. In other words, the valve 72, in addition to its intrinsic functions of only allowing a flow of gas to sense single, prevents a complete emptying of the gas cylinder beyond a residual pressure corresponding to the calibration value of its spring. Maintaining such a minimum gas pressure in the bottle has the advantage of preventing the penetration of impurities and humidity into the bottle before refilling, even when the closure member has been forgotten. main closure 64.

S'il est utile de pouvoir conserver une pression résiduelle dans la bouteille pour empêcher la pénétration d'impuretés, il peut être nécessaire de la vider complètement de temps en temps en la branchant sur une pompe à vide, notamment en vue d'un rinçage. A cet effet, il est utile de prévoir des moyens pour pouvoir neutraliser l'action de l'un des deux clapets anti-retour 70 ou 72. La figure 3 reprend, à titre de variante, le médaillon de la figure 2 et illustre un exemple de réalisation d'un clapet anti-retour neutralisable. Dans ce mode de réalisation le piston 130 qui forme l'organe d'obturation est monté de manière coulissante dans le logement cylindrique d'un bouchon 132 qui est vissé dans le corps 78 du robinet. Le logement de l'organe d'obturation 130 comporte un bord intérieur de retenu 134 coopérant avec un épaulement périphérique 136 de l'organe d'obturation 130. Lorsque le bouchon est vissé à fond dans le corps 78 du robinet, comme représenté sur la partie inférieure de la figure 3, la liberté de mouvement de l'organe 130 n'est pas perturbée par ce bord périphérique 134. Par contre, lorsque le bouchon 132 est dévissé, comme représenté sur la partie supérieure de la figure 3 l'organe 130 est soulevé de son siège sous l'effet de l'action du bord 134 sur l'épaulement 136. En dévissant davantage le bouchon 132 l'organe 130 est complètement dégagé de son siège et le clapet est ainsi neutralisé dans une position d'ouverture, ce qui permet de vider complètement la bouteille, et, si nécessaire, de la brancher sur une pompe à vide.If it is useful to be able to maintain a residual pressure in the bottle to prevent the penetration of impurities, it may be necessary to empty it completely from time to time by connecting it to a vacuum pump, in particular for rinsing . To this end, it is useful to provide means to be able to neutralize the action of one of the two non-return valves 70 or 72. FIG. 3 shows, as a variant, the medallion of FIG. 2 and illustrates a exemplary embodiment of a neutralizable non-return valve. In this embodiment, the piston 130 which forms the closure member is slidably mounted in the cylindrical housing of a plug 132 which is screwed into the body 78 of the valve. The housing of the shutter member 130 has an inner retaining edge 134 cooperating with a peripheral shoulder 136 of the shutter member 130. When the plug is screwed fully into the body 78 of the valve, as shown in the lower part of FIG. 3, the freedom of movement of the member 130 is not disturbed by this peripheral edge 134. On the other hand, when the plug 132 is unscrewed, as shown on the upper part of FIG. 3 the member 130 is lifted from its seat under the effect of the action of the edge 134 on the shoulder 136. By further unscrewing the plug 132 the member 130 is completely disengaged from its seat and the valve is thus neutralized in a position of opening, which allows the bottle to be completely emptied and, if necessary, connected to a vacuum pump.

Il est possible de prévoir d'autres moyens de neutralisation du clapet que ceux montrés sur la figure 3. Par exemple, il est possible de munir l'organe d'obturation 130 d'une tige traversant axialement et de façon étanche le bouchon et pouvant être actionné depuis l'extérieur par des moyens mécaniques ou magnétiques pour soulever l'organe 130 de son siège contre l'action de son ressort.It is possible to provide other means for neutralizing the valve than those shown in FIG. 3. For example, it is possible to provide the shutter member 130 with a rod axially and sealingly passing through the plug and capable of be actuated from the outside by mechanical or magnetic means to lift the member 130 from its seat against the action of its spring.

Au lieu de prévoir la neutralisation du clapet 72, on pourrait, en principe, rendre le clapet 70 neutralisable. Il est toutefois préférable de prévoir la neutralisation du clapet 72 étant donné que celui-ci se trouve en aval du détendeur 66 et ne subit pas, comme le clapet 70, la pression élevée du gaz dans la bouteille, ceci pour parer à toute éventualité de négligence ou d'oubli de remise en service du clapet anti-retour après sa neutralisation.Instead of providing for the neutralization of the valve 72, one could, in principle, make the valve 70 neutralizable. It is however preferable to provide for the neutralization of the valve 72 since the latter is located downstream of the regulator 66 and does not undergo, like the valve 70, the high pressure of the gas in the bottle, this to counter any possibility of neglect or forgetting to return the non-return valve to service after neutralization.

Il reste finalement à souligner que, si un robinet tel que représenté sur la figure 2, c'est-à-dire avec le détendeur prévu endessous du clapet 72 et le clapet 70 endessous du raccord 82 est réalisable en pratique, cet arrangement a été choisi pour les besoins de la description et de la clareté de la figure. En pratique, dans le but de rendre le robinet plus compact, notamment dans le sens axial, le détendeur 66 et le clapet 70 sont prévus approximativement au niveau du clapet 72 et du raccord 82 et disposés en croix par rapport à ceux-ci.Finally, it remains to emphasize that, if a tap as shown in FIG. 2, that is to say with the regulator provided below the valve 72 and the valve 70 below the connector 82 is practicable, this arrangement has been chosen for the purposes of description and clarity of the figure. In practice, in order to make the valve more compact, in particular in the axial direction, the regulator 66 and the valve 70 are provided approximately at the level of the valve 72 and the connector 82 and arranged in a cross with respect thereto.

Claims (8)

Robinet pour bouteilles de gaz comprimés ou liquéfiés, comprenant un corps conçu pour être vissé sur une bouteille de gaz, un organe de fermeture intérieur (64) avec une surface d'étanchéité à l'intersection d'un passage (60) de sortie des gaz et un canal (88) en communication avec un passage d'admission (62), un moyen de manoeuvre extérieur (90) relié, à travers le corps, audit organe de fermeture (64) pour déplacer celui-ci, contre l'action de moyens mécaniques ou élastiques (94) entre une position d'ouverture et une position de fermeture et un détendeur (66) pour le contrôle de la pression d'écoulement du gaz en position ouverte de l'organe de fermeture (64), caractérisé par une conduite (76) en dérivation à travers le corps (78) entre le passage d'admission (62) et le canal (88), courcircuitant le détendeur (66) et pourvu de moyens permettant l'écoulement de gaz de remplissage du passage de sortie (60) vers le passage d'admission (62) et empêchant l'écoulement des gaz en sens inverse.Valve for compressed or liquefied gas bottles, comprising a body designed to be screwed onto a gas bottle, an internal closure member (64) with a sealing surface at the intersection of an outlet passage (60) gas and a channel (88) in communication with an intake passage (62), an external operating means (90) connected, through the body, to said closure member (64) to move the latter, against the action of mechanical or elastic means (94) between an open position and a closed position and a pressure reducer (66) for controlling the gas flow pressure in the open position of the closing member (64), characterized by a conduit (76) bypassing through the body (78) between the intake passage (62) and the channel (88), bypassing the regulator (66) and provided with means allowing the flow of filling gas from the outlet passage (60) to the intake passage (62) and preventing the nut gas in reverse. Robinet selon la revendication 1, caractérisé en ce que lesdits moyens sont constitués par un clapet anti-retour (70).Tap according to claim 1, characterized in that said means consist of a non-return valve (70). Robinet selon l'une quelconque des revendications 1 ou 2, caractérisé par un clapet anti-retour (72) entre le détendeur (66) et l'organe de fermeture (64).Tap according to any one of claims 1 or 2, characterized by a non-return valve (72) between the regulator (66) and the closing member (64). Robinet selon la revendication 3, caractérisé en ce que le clapet anti-retour (72) est neutralisable depuis l'extérieur.Tap according to claim 3, characterized in that the non-return valve (72) can be neutralized from the outside. Robinet selon la revendication 4, caractérisé en ce que le clapet anti-retour (72) comporte un organe d'obturation (130) soumis à l'action d'un ressort et monté à l'intérieur d'un bouchon (132) vissé dans un raccord du corps du robinet et dont le dévissage libère le passage dans les deux sens à travers le clapet.Tap according to claim 4, characterized in that the non-return valve (72) comprises a shutter member (130) subjected to the action of a spring and mounted inside a screwed plug (132) in a fitting of the valve body and whose unscrewing frees passage in both directions through the valve. Robinet selon la revendication 5, caractérisé en ce que le bouchon comporte un logement cylindrique pour l'organe d'obturation et en ce que le logement est pourvu d'un bord intérieur (134) coopérant avec un épaulement périphérique (136) de l'organe d'obturation.Tap according to claim 5, characterized in that the plug has a cylindrical housing for the shutter member and in that the housing is provided with an inner edge (134) cooperating with a peripheral shoulder (136) of the shutter member. Robinet selon la revendication 4, caractérisé en ce que le clapet comporte un organe d'obturation (130) soumis a l'action d'un ressort et monté à l'intérieur d'un bouchon (132) et en ce que l'organe d'obturation (130) est manoeuvrable, depuis l'extérieur par des moyens magnétiques, par l'intermédiaire d'une tige reliée à l'organe d'obturation (130) et traversant axialement et de manière étanche le bouchon (132).Tap according to claim 4, characterized in that the valve comprises a shutter member (130) subjected to the action of a spring and mounted inside a plug (132) and in that the member shutter (130) is operable from the outside by magnetic means, via a rod connected to the shutter member (130) and passing axially and sealingly through the plug (132). Robinet selon l'une quelconque des revendications 1 à 7, caractérisé par une soupape de sécurité (68) prévue dans un raccord (80) traversé par le passage de sortie (60) à un endroit situé entre deux sièges tronconiques tels qu'elle soit masquée par un premier connecteur adaptable sur le raccord pour le remplissage de la bouteille et qu'elle ne soit pas masquée par un second connecteur adaptable sur le même raccord pour le soutirage du gaz de la bouteille.Tap according to any one of claims 1 to 7, characterized by a safety valve (68) provided in a fitting (80) through which the outlet passage (60) passes at a location between two frustoconical seats as it is masked by a first connector adaptable on the connector for filling the bottle and it is not masked by a second connector adaptable on the same connector for withdrawing gas from the bottle.
EP19910121914 1991-01-16 1991-12-20 Valve for compressed or liquefied gas bottles Expired - Lifetime EP0496091B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9100449A FR2671598B1 (en) 1991-01-16 1991-01-16 TAP FOR BOTTLES OF COMPRESSED OR LIQUEFIED GASES.
FR9100449 1991-01-16

Publications (2)

Publication Number Publication Date
EP0496091A1 true EP0496091A1 (en) 1992-07-29
EP0496091B1 EP0496091B1 (en) 1994-08-24

Family

ID=9408732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910121914 Expired - Lifetime EP0496091B1 (en) 1991-01-16 1991-12-20 Valve for compressed or liquefied gas bottles

Country Status (6)

Country Link
US (1) US5232019A (en)
EP (1) EP0496091B1 (en)
DE (1) DE69103619T2 (en)
DK (1) DK0496091T3 (en)
ES (1) ES2059028T3 (en)
FR (1) FR2671598B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120590A2 (en) * 2000-01-24 2001-08-01 Luxembourg Patent Company S.A. Valve for compressed or liquified gas
FR3003627A1 (en) * 2013-03-25 2014-09-26 Ad Venta HEAD OF GAS TANK UNDER PRESSURE.
WO2015082850A1 (en) * 2013-12-04 2015-06-11 Aghilone Marcello Cartridge for storing compressed air
CN105485518A (en) * 2015-12-31 2016-04-13 平湖市瑞阳精密机械有限公司 Combination valve for steel cylinders
WO2018001561A1 (en) * 2016-07-01 2018-01-04 Daimler Ag Tank valve

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FR2706051B1 (en) * 1993-06-03 1995-07-28 Taema Gas distribution control assembly and gas cylinder equipped with such an assembly.
JPH09178096A (en) * 1995-12-22 1997-07-11 Aichi Koatsu Kk Disaster corresponding type lp gas vessel valve
DE19709096A1 (en) * 1997-03-06 1998-10-01 Vti Ventil Technik Gmbh Valve fitting for a pressure vessel
US5937895A (en) * 1998-04-17 1999-08-17 Uop Llc Fail-safe delivery valve for pressurized tanks
JP2000046212A (en) * 1998-07-29 2000-02-18 Nippon Sanso Kk Valve for container
JP2001263599A (en) * 2000-03-22 2001-09-26 Neriki:Kk Cylinder valve with check valve
US20040000339A1 (en) * 2002-07-01 2004-01-01 Heiderman Douglas Charles Multiple dispensing check valve delivery system
ATE392577T1 (en) * 2004-07-21 2008-05-15 African Oxygen Ltd MULTIFUNCTIONAL VALVE UNIT
US9644793B2 (en) * 2012-06-04 2017-05-09 Youngdo Ind. Co., Ltd. Fluid control valve assembly
JP2016205418A (en) * 2015-04-15 2016-12-08 株式会社ネリキ Check valve mechanism and one-way regulation valve device
CN113503467B (en) * 2021-07-08 2023-07-25 亚普汽车部件（开封）有限公司 High-pressure gas cylinder valve for vehicle
TWI836914B (en) * 2023-02-23 2024-03-21 鐵禾瑪精密有限公司 Inflatable joint

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WO1989002047A1 (en) * 1987-08-31 1989-03-09 Svahn, Ove A valve device
US4844111A (en) * 1987-09-21 1989-07-04 Union Carbide Corporation High pressure regulator valve
DE9005826U1 (en) * 1990-05-22 1990-08-09 Carl Esser, Druckgasarmaturen GmbH, 5000 Köln Shut-off device for a pressure vessel under internal pressure of a medium

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120590A2 (en) * 2000-01-24 2001-08-01 Luxembourg Patent Company S.A. Valve for compressed or liquified gas
EP1120590A3 (en) * 2000-01-24 2002-11-06 Luxembourg Patent Company S.A. Valve for compressed or liquified gas
FR3003627A1 (en) * 2013-03-25 2014-09-26 Ad Venta HEAD OF GAS TANK UNDER PRESSURE.
WO2014154954A1 (en) * 2013-03-25 2014-10-02 Ad-Venta Pressurized gas reservoir head assembly
WO2015082850A1 (en) * 2013-12-04 2015-06-11 Aghilone Marcello Cartridge for storing compressed air
EA029630B1 (en) * 2013-12-04 2018-04-30 Марчелло Агилоне Cartridge for storing compressed air
AU2014358968B2 (en) * 2013-12-04 2019-07-04 Marcello AGHILONE Cartridge for storing compressed air
US10563821B2 (en) 2013-12-04 2020-02-18 Marcello Aghilone Cartridge for storing compressed air
CN105485518A (en) * 2015-12-31 2016-04-13 平湖市瑞阳精密机械有限公司 Combination valve for steel cylinders
WO2018001561A1 (en) * 2016-07-01 2018-01-04 Daimler Ag Tank valve
US10955091B2 (en) 2016-07-01 2021-03-23 Daimler Ag Tank valve

Also Published As

Publication number Publication date
US5232019A (en) 1993-08-03
EP0496091B1 (en) 1994-08-24
ES2059028T3 (en) 1994-11-01
FR2671598A1 (en) 1992-07-17
FR2671598B1 (en) 1993-04-16
DE69103619T2 (en) 1994-12-22
DE69103619D1 (en) 1994-09-29
DK0496091T3 (en) 1994-11-14

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