JP6207377B2 - Low temperature liquefied gas transfer and filling equipment - Google Patents

Description

  The present invention relates to a low-temperature liquefied gas transfer and filling device, and more specifically, transfers low-temperature liquefied gas from a first low-temperature liquefied gas container storing low-temperature liquefied gas to a second low-temperature liquefied gas container filled with low-temperature liquefied gas. A low-temperature liquefied gas transfer and filling device used for performing, for example, a parent container (first low-temperature liquefied gas container) to a child container (second low-temperature liquefied gas container) in a liquid oxygen vaporization type supply device for home oxygen therapy The present invention relates to a low-temperature liquefied gas transfer / filling apparatus suitable for use as a medical oxygen transfer / filling apparatus for connecting a parent container and a child container when transferring liquid oxygen.

  For example, a liquid oxygen vaporization type supply device for home oxygen therapy includes a large-capacity parent container installed indoors and a portable small-capacity child container. Liquid oxygen is transferred from the container to the child container. The transfer of liquid oxygen from the parent container to the child container is performed by a user connecting transfer-filling connecting portions provided in the parent container and the child container, respectively. As a system for transferring and filling liquid oxygen from the parent container to the child container, after aligning and connecting the connecting means of the parent container and the connecting means of the portable child container, the exhaust valve on the child container side is opened. Has proposed a system that starts filling liquid oxygen into a portable child container (see, for example, Patent Document 1).

U.S. Pat. No. 4,211,086

  However, in the system described in Patent Document 1, the operation of lifting the child container up to the height of the connection means of the parent container and aligning the shaft of the connection means and the operation of opening the exhaust valve after connection are performed. Because it becomes necessary, the operation may be burdensome for elderly people with weak muscular strength, and improvement has been desired. In addition to the above-described medical oxygen, low-temperature liquefied gas is supplied from a first low-temperature liquefied gas container storing various low-temperature liquefied gases such as liquid oxygen, liquid nitrogen, liquid argon, and liquefied carbon dioxide. When transferring low-temperature liquefied gas into the second low-temperature liquefied gas container to be filled, there is a demand for means that can transfer and fill more easily and reliably.

  Accordingly, an object of the present invention is to provide a low-temperature liquefied gas transfer and filling device that can transfer and fill the low-temperature liquefied gas by connecting the transfer and filling connecting portions reliably with a simple operation.

  In order to achieve the above object, the low-temperature liquefied gas transfer and filling device of the present invention is configured such that the low-temperature liquefied gas container is filled with the low-temperature liquefied gas from the first low-temperature liquefied gas container in which the low-temperature liquefied gas is stored. In the low-temperature liquefied gas transfer and filling device for transferring and filling the gas, the second low-temperature liquefied gas container includes a low-temperature liquefied gas introduction section for introducing the low-temperature liquefied gas into the second low-temperature liquefied gas container, A transfer-filling connecting portion having a gas lead-out portion for deriving the gas in the second low-temperature liquefied gas container when the low-temperature liquefied gas container is introduced into the low-temperature liquefied gas container; A low-temperature liquefied gas lead-out section connected to the liquefied-gas introduction section for deriving the low-temperature liquefied gas in the first low-temperature liquefied gas container toward the second low-temperature liquefied gas container; and the transfer of the second low-temperature liquefied gas container. Detachable connecting part for filling A second low-temperature liquefied gas container mounting portion to be mounted; connection side moving means for linearly moving the second low-temperature liquefied gas container mounting portion toward the low-temperature liquefied gas outlet; and the second low-temperature liquefied gas container mounting portion. Separation side moving means for moving the liquefied gas container mounting portion in a direction away from the low temperature liquefied gas outlet, and the second low temperature liquefied gas container mounting portion approaches the low temperature liquefied gas outlet and introduces the low temperature liquefied gas And a low-temperature liquefied gas lead-out section are connected to each other when the low-temperature liquefied gas lead-out section is connected to the low-temperature liquefied gas lead-out section. Each of which is provided with a transfer connecting valve that is opened only when the connection state is reached, and the gas derivation unit includes the connection state in which a low-temperature liquefied gas introduction unit and a low-temperature liquefied gas extraction unit are set in advance. It is characterized by comprising an exhaust valve to be opened only when it becomes.

  Furthermore, the low-temperature liquefied gas transfer and filling device of the present invention is a toggle in which the connection side moving means is a combination of a connection side lever that pushes downward and a plurality of link members that are actuated by pushing down the connection side lever. A mechanism, and the toggle mechanism of the connection state holding means rotates beyond the dead point while the connection state of the transfer filling connecting valve reaches the state after the connection, It is characterized in that the connection state of the transfer filling connecting valve is maintained.

  The low-temperature liquefied gas transfer / filling device according to the present invention includes a separation-side lever in which the separation-side moving means pushes downward, and a push-down operation of the separation-side lever to connect the toggle mechanism to the transfer-fill connection. A separation-side link member that rotates from a state in which a valve is connected to a state before the transfer-filling coupling valve is connected beyond the dead point, and the second low-temperature liquefied gas container mounting portion is connected to the low-temperature liquefied gas lead-out portion An urging means for urging away from the second liquefied gas container mounting portion from the low-temperature liquefied gas lead-out portion when the separation-side moving means pushes down the separation-side lever. It is characterized by having a pushing member that pushes away.

  Further, the gas lead-out part is provided adjacent to the low-temperature liquefied gas introduction part, and when the low-temperature liquefied gas introduction part is connected to the low-temperature liquefied gas lead-out part, the upper part of the first low-temperature liquefied gas container Are simultaneously connected to a gas discharge part provided adjacent to the low temperature liquefied gas lead-out part, and the exhaust valve is opened, and the gas led out from the gas lead-out part passes through the gas discharge part to the outside of the apparatus. It is characterized by being discharged. In addition, the low-temperature liquefied gas transfer and filling device of the present invention provides medical treatment from a large-capacity first low-temperature liquefied gas container to a portable small-capacity second low-temperature liquefied gas container in a home oxygen therapy liquid oxygen vaporization type supply device. It is characterized by being a transfer and filling device used when transferring and filling liquid oxygen for use.

  According to the low-temperature liquefied gas transfer and filling apparatus of the present invention, the second low-temperature liquefied gas container mounting portion equipped with the transfer and filling connecting portion of the second low-temperature liquefied gas container is used as the low-temperature liquefied gas container. By moving linearly toward the gas lead-out part, the transfer filling provided respectively in the low-temperature liquefied gas introduction part of the second low-temperature liquefied gas container and the low-temperature liquefied gas lead-out part of the first low-temperature liquefied gas container Since the connecting valve can be connected to open the valve, the low-temperature liquefied gas can be easily transferred from the first low-temperature liquefied gas container to the second low-temperature liquefied gas container.

  In particular, by moving the second low-temperature liquefied gas container mounting portion toward the low-temperature liquefied gas lead-out portion with a connecting lever that pushes downward and a toggle mechanism, transfer and filling of low-temperature liquefied gas with a simple operation Can start. Further, by holding the transfer / filling connection valve in the connected state using the dead point of the toggle mechanism, the transfer / filling connection valve can be reliably held in the connected state by a simple mechanism.

  Furthermore, by separating the transfer-filling connection valve using the push-down operation of the separation-side lever that pushes downward and the urging force of the urging means, the transfer-filling is performed with a simple operation that only pushes down the separation-side lever. The connecting valve can be separated. In addition, by providing a pushing member that pushes the second low-temperature liquefied gas container mounting portion away from the low-temperature liquefied gas lead-out portion by the pushing-down operation of the separation side lever, the transfer-filling connection is achieved due to the temperature drop during transfer-filling. Even when the valve is frozen, the transfer-filling connection valve can be easily separated by the pushing-down operation of the separation side lever.

It is the piping system diagram of the connection state which shows the one example which applied the low temperature liquefied gas transfer filling apparatus of this invention to the medical oxygen transfer filling apparatus in the liquid oxygen vaporization type supply apparatus for home oxygen therapy. It is the perspective view which looked at the medical oxygen transfer filling apparatus which has not connected the child container similarly from the back side. It is a top view of the medical oxygen transfer filling apparatus similarly. It is a bottom view of a medical oxygen transfer filling apparatus. It is VV sectional drawing of FIG. It is VI-VI sectional drawing of FIG. 3, Comprising: It is a figure which shows the state which mounts the connection part for transfer filling. It is sectional drawing which similarly shows the state which pushed down the connection side lever and moved the child container mounting part which mounted | wore the connection part for transfer and filling of a child container to the liquid oxygen derivation | leading-out part direction. It is sectional drawing which similarly shows the state which the transfer filling connection valve connected. It is sectional drawing which similarly shows the state which hold | maintained the transfer-filling coupling valve in the connection state. It is sectional drawing which similarly shows the state which pushes down the isolation | separation side lever and is separating the transfer-filling connection valve. It is sectional drawing which similarly shows the state which the child container mounting part returned to the child container attachment / detachment position with the urging | biasing force of the urging means. It is sectional drawing which similarly shows the state which pushes down the isolation | separation side lever and is separating the transfer-filling connection valve by the pushing member. Similarly, it is a side view showing a state where the child container mounting portion is separated by the urging force of the pushing member and returned to the child container attaching / detaching position by the urging force of the urging means. It is sectional drawing similarly.

  This embodiment shows one embodiment in which the low-temperature liquefied gas transfer and filling device of the present invention is applied to a medical oxygen transfer and filling device in a home oxygen therapy liquid oxygen vaporization type supply device. The gas is liquid oxygen for medical use, the first low-temperature liquefied gas container is a parent container composed of a relatively large heat insulating container installed indoors, and the second low-temperature liquefied gas container is carried when going out. It is a child container composed of a heat insulating container that is smaller than the parent container having a possible size and weight.

  The medical oxygen transfer and filling device 11 transfers the liquid oxygen in the parent container 21 in the liquid oxygen vaporization type supply device for home oxygen therapy into the child container 31, and the parent container 21 and the child container 31 are liquid oxygen. The medical oxygen transfer / filling device 11 is used in a state of being fixed to the upper part of the parent container 21 during normal use.

  First, as shown in the piping system diagram of FIG. 1, a parent container 21 storing liquid oxygen supplies an evaporator 22 that evaporates liquid oxygen into oxygen gas, and supplies oxygen gas evaporated by the evaporator 22. An oxygen gas supply valve 23, and a saving valve 24 for supplying the gas in the parent container 21 to the supply line when the pressure in the parent container 21 rises above a predetermined pressure by the gas evaporated in the parent container 21; , A safety valve 25 for releasing gas from the parent container 21 when the pressure in the parent container 21 abnormally increases, a parent-side transfer path 26 connected to the medical oxygen transfer-filling device 11, and the parent side A transfer / fill source valve 27 provided in the transfer / filling path 26, a filling valve 28 that is used when filling the parent container 21 with liquid oxygen, and a pressure gauge 29 that displays the pressure in the parent container 21 are provided. Yes.

  Similar to the parent container 21, the child container 31 includes an evaporator 32 that evaporates liquid oxygen into oxygen gas, an oxygen gas supply valve 33 that supplies oxygen gas evaporated by the evaporator 32, and the child container 31. When the pressure in the child container 31 rises above a predetermined pressure due to the gas evaporated inside, the saving valve 34 for supplying the gas in the child container 31 to the supply line and the pressure in the child container 31 are abnormal. A safety valve 35 that releases gas from the child container 31 when it rises, a liquid oxygen introduction part 36 that introduces liquid oxygen into the child container 31, and the child container 31 when liquid oxygen is introduced into the child container 31. A transfer filling connecting portion 38 having a gas lead-out portion 37 for leading the inside gas is provided.

  At the front end of the liquid oxygen introduction part 36 and the front end of the gas outlet part 37, a transfer filling connection valve 36a and a gas outlet connection valve 37a on the child container side are respectively provided. The lead-out connecting valve 37a is provided in the transfer filling connecting portion 38 in a state of being adjacent to each other at a predetermined interval in the same direction.

  The medical oxygen transfer / filling device 11 includes a liquid oxygen deriving unit 12 connected to the parent-side transfer / filling path 26 as a path for transferring and filling liquid oxygen from the parent container 21 to the child container 31, and the liquid oxygen lead-out. A transfer / fill connection valve 12a provided at the tip of the section 12 and connected to the transfer / fill connection valve 36a on the child container side, and a gas discharge section 13 connected to the gas outlet connection valve 37a via a gas discharge valve 13a. And. Further, the gas discharge unit 13 is provided with a thermometer 14 for measuring the temperature of the gas (fluid) discharged through the gas discharge unit 13 to the outside of the apparatus.

  2 to 14 show an example of the device configuration of the medical oxygen transfer and filling device 11, and the left side is the front surface in each figure. First, in FIGS. 2 to 6, the medical oxygen transfer / filling device 11 is a box-shaped pedestal having a mounting piece 15 a for fixing to a housing (not shown) covering at least the upper part of the parent container 21 on the lower outer side. Part 15, a filling connection valve part 16 in which the transfer filling connection valve 12 a and the gas discharge valve 13 a are arranged side by side on the front side of the upper surface of the base part 15, respectively, A child container mounting portion 17 provided on the upper surface and a connection side lever provided on the left side of the pedestal portion 15 and used to move the child container mounting portion 17 in a direction approaching the filling connecting valve portion 16. 18 and a separation-side lever 19 provided on the right side of the pedestal portion 15 and used when the child container mounting portion 17 is moved away from the filling connecting valve portion 16.

  The child container mounting portion 17 is formed in a box shape having an opening at the bottom, and the child container mounting portion 17 and the pedestal portion 15 have the child container mounting portion 17 in the front-rear direction with respect to the pedestal portion 15. Various members for movement are arranged. First, two first guide rods 41 parallel to the front-rear direction are provided on the guide rod support members 15b, 15c provided at both front and rear ends of the base portion 15, and the front wall of the child container mounting portion 17 is provided. 17a and rear wall 17b are provided with guide holes (not shown) through which the first guide rod 41 passes. Further, on the outer periphery of the first guide rod 41 between the front guide rod support member 15b and the front wall 17a, first springs 41a for urging the child container mounting portion 17 rearward are provided. .

  Positioning pins 42a corresponding to the three positioning holes 38a provided on the bottom plate of the transfer filling connecting portion 38 are provided at three positions on the upper surface of the child container mounting portion 17, and the child container is mounted at the rear end portion. A support piece 42c for supporting the rear end of the transfer filling connecting portion 38 attached to the portion 17 via a contact member 42b is provided. Further, the front wall 17a is provided with two second guide bars 43a and one third guide bar 43b toward the rear side, and a second guide bar is provided on the lower surface of the child container mounting part 17. A slide member 43d that is movably guided through the guide portion 43c is provided on the rod 43a and the third guide rod 43b, and an outer periphery of the second guide rod 43a between the front wall 17a and the slide member 43d is Second springs 43e for urging the slide member 43d rearward with respect to the child container mounting portion 17 are provided.

  At the front end portion of the transfer filling connecting portion 38 attached to the child container attaching portion 17, the transfer filling connecting valve faces the front side so as to face the transfer filling connection valve 12a and the gas discharge valve 13a. 36a and the gas outlet connecting valve 37a are arranged side by side. The transfer-filling connection valve 12a and the transfer-filling connection valve 36a, and the gas discharge valve 13a and the gas outlet connection valve 37a are automatically opened only when the connection state is set in advance. Self-sealing couplings that are automatically closed are used, the child container mounting portion 17 moves forward, the transfer-filling connection valve 12a, the transfer-filling connection valve 36a, and the gas discharge valve 13a. And the gas lead-out coupling valve 37a are formed so that liquid oxygen can be transferred and charged in a state where they are securely connected to each other.

  A toggle mechanism 44 for moving the child container mounting portion 17 forward and backward and holding the child container mounting portion 17 in the forward position is provided inside the base portion 15. The toggle mechanism 44 has a distal end coupled to a first link member 44b having a base end connected to a fixed shaft 44a provided at the upper rear side of the pedestal 15 and a moving shaft 44c provided to the slide member 43d. The second link member 44d, and a connecting shaft 44e that connects the distal end portion of the first link member 44b and the proximal end portion of the second link member 44d are provided. In addition, a drive pin 44f that is used when the toggle mechanism 44 is operated is provided at an intermediate lower portion of the first link member 44b.

  The connection side rotation angle shaft 45a connected to the base of the connection side lever 18 penetrates the pedestal portion 15 in the left-right direction, and the connection side rotation angle shaft 45a is sequentially connected to the connection side lever connection side from the connection side lever connection side. A connection side gear member 45b, a connection side drive member 45c, and a connection release member 45d are provided. An engagement recess 45e is provided at the tip of the connection side drive member 45c, and the drive pin 44f is engaged in the engagement recess 45e.

  The separation-side rotation angle shaft 46a connected to the base of one separation-side lever 19 penetrates the pedestal portion 15 in the left-right direction on the front side of the connection-side rotation angle shaft 45a. A separation-side gear member 46b and a separation-side drive member 46c are provided on the angular shaft 46a in this order from the separation-side lever connection side. The connection-side rotation angle shaft 45a and the separation-side rotation angle shaft 46a are respectively provided with shaft springs 45f and 46d for urging the connection-side lever 18 and the separation-side lever 19 in the upward direction. The gear members 45b and 46b are respectively meshed with rotary dampers 45g and 46e provided on the side wall of the pedestal portion 15. Further, a separation drive pin 46f is provided at the rotation end of the separation side drive member 46c.

  Between the transfer filling connection valve 12a and the gas discharge valve 13a and at three positions on both sides of both valves 12a and 13a, the transfer filling connection valve 36a and the gas outlet connection connection from the transfer filling connection valve 12a and the gas discharge valve 13a are provided. Forced separation members 47 are provided for forcibly separating the valve 37a without depending on the urging force of the urging means. Each forced separation member 47 is fixed to a forced separation rotation shaft 47a provided in the left-right direction, and the forced separation rotation shaft 47a penetrating the right side wall of the pedestal portion 15 is provided at the tip of the forced separation rotation shaft 47a. A forcible separation drive member 47b for operating the separation side lever 19 is provided in the middle upper part of the separation side lever 19, and the forcible separation drive member 47b is rotated when the separation side lever 19 is rotated by a predetermined angle or more. A forced separation pushing portion 47c is provided.

  Further, a limit switch 48 for detecting the position of the child container mounting portion 17 is provided on the rear side of the upper surface of the pedestal portion 15, and a signal from the limit switch 48 and the thermometer are detected by a control device (not shown). On the basis of the signal from 14 or the like, the state of transfer and filling of liquid oxygen can be monitored.

  When liquid oxygen is transferred from the parent container 21 to the child container 31, first, as shown in FIG. 6, the positioning pin 42a and the positioning hole 38a are aligned to connect the transfer filling connecting portion 38 of the child container 31 to the child container 31. The container is mounted on the container mounting unit 17. At this time, the child container mounting portion 17 and the slide member 43d are retracted to the reference position away from the filling connecting valve portion 16 by the biasing action of the first spring 41a and the second spring 43e. In the mechanism 44, the first link member 44b and the second link member 44d are bent downward in a V shape. Further, the connection side lever 18 is in a state where the distal end operating portion 18a is raised, and the separation side lever 19 is also in a state where the distal end operating portion 19a is raised. Further, the forced separation member 47 is in a state of being retracted to a reference position that does not protrude from the connection surface of the transfer / filling connection valve 12a and the gas discharge valve 13a by a spring 47d provided on the forced separation rotation shaft 47a.

  Next, as shown in FIG. 7, when the connection side lever 18 is pushed downward to rotate the connection side rotation angle shaft 45a, the connection side drive member 45c rotates counterclockwise in FIG. Then, the first link member 44b is rotated clockwise about the fixed shaft 44a via the drive pin 44f of the first link member 44b, that is, so that the tip of the first link member 44b moves upward. Move. The second link member 44d pushes the moving shaft 44c in the direction of the charging connecting valve portion 16 as the connecting shaft 44e rises, and the slide member 43d moves through the second spring 43e by the movement of the moving shaft 44c. The container mounting part 17 is pushed in the direction of the connecting valve part 16 for filling.

  As shown in FIG. 8, while the first spring 41a is being compressed, the child container mounting portion 17 approaches the filling connection valve portion 16, and the transfer filling connection valve 12a, the transfer filling connection valve 36a, the gas discharge valve 13a, and the gas discharge When the connection valves 37a are respectively in a predetermined connection state, the movement of the child container mounting portion 17 in the direction of the connection valve portion 16 for filling stops, and in this state, when the connection side lever 18 is further pushed down further downward, the second spring As shown in FIG. 9, the first link member 44b and the second link member 44d move above the dead point in the linear state, as shown in FIG. , The connecting portion of both link members 44b and 44d comes into contact with the lower surface of the child container mounting portion 17, and the toggle mechanism 44 is moved by the urging force of the first spring 41a and the second spring 43e. Is held in the connected state of the valve, is held in a state in which the respective valves and reliably connected by the biasing force of the second spring 43e.

  Thereby, even if the connection side lever 18 is released, the connection state of the transfer / filling connection valve 12a and the transfer / filling connection valve 36a, the gas discharge valve 13a and the gas outlet connection valve 37a is maintained at a predetermined biasing force by the action of the toggle mechanism 44. The liquid oxygen is transferred from the parent container 21 to the child container 31 and gas is discharged from the child container 31.

  After the transfer and filling, when the separation side lever 19 is pushed downward, as shown in FIG. 10, the separation side drive member 46c rotates counterclockwise in FIG. 10 via the separation side rotation angle shaft 46a. The separation drive pin 46f of the separation side drive member 46c rotates the connection release member 45d clockwise in FIG. As the connection release member 45d rotates, the connection side drive member 45c rotates clockwise via the connection side rotation angle shaft 45a, and the first link member 44b rotates counterclockwise. Moves downward. Thereby, after the 1st link member 44b and the 2nd link member 44d compress the 2nd spring 43e slightly, and exceed a dead point, the connection part of both link members 44a and 45a moves below. After exceeding the dead point, the transfer / fill connection valve 12a and the transfer / fill connection valve 36a, the gas discharge valve 13a, and the gas outlet connection valve 37a are separated by the restoring force (biasing force) of the first spring 41a, as shown in FIG. As described above, the first link member 44b and the second link member 44d return to the original bent shape, the child container mounting portion 17 moves back to the reference position, and the connection side lever 18 returns to the original position. To rise.

  Thereafter, the child container 31 can be used as a portable breathing oxygen supply source by releasing the separation lever 19 and then removing the child container 31 from the child container mounting portion 17.

  The ascending speeds of the connection side lever 18 and the separation side lever 19 can be adjusted to appropriate ascent speeds by the rotary dampers 45g and 46e, and the connection side lever 18 and the separation side lever 19 do not rise suddenly. Sufficient safety can be ensured.

  Further, even in the case where moisture in the air adheres to the periphery of the transfer-fill connection valve 12a and the transfer-fill connection valve 36a and freezes and cannot be separated by the restoring force of the first spring 41a, FIG. 12 to FIG. As shown in the figure, when the separation side lever 19 is further pushed down, the forced separation pushing portion 47c of the separation side lever 19 rotates the forced separation drive member 47b clockwise around the forced separation rotation shaft 47a. Then, the forced separation member 47 is protruded from the connection surface of the transfer filling connecting valve 12a and the gas discharge valve 13a via the forced separation rotating shaft 47a, and the child container mounting portion 17 is pushed backward to transfer and connect the connection valve 12a. The transfer / filling connection valve 36a, the gas discharge valve 13a, and the gas outlet connection valve 37a can be forcibly separated. After separation, the state of FIG. 11 is restored by the restoring force of the first spring 41a.

  In this way, the connection side moving means, the connection state holding means, and the separation side moving means are provided on the parent container 21 side by using the connection side lever 18 and the separation side lever 19 that are pushed down and using the toggle mechanism. With the transfer container connecting portion 38 provided on the child container 31 side attached to the child container mounting portion 17, the parent container 21 can be simply pushed down in a predetermined order. To the child container 31 can be transferred and filled with liquid oxygen. Thereby, even elderly people with weak muscular strength can easily and reliably transfer and fill liquid oxygen. In particular, the operation direction of both levers 18 and 19 can be operated more easily and surely than when applying force in the left-right direction or upward direction by pushing down the operation direction of both levers. Even when the parent container 21 is light, there is no fear that the parent container 21 will be shaken or fall down due to the operation of both levers 18 and 19, and the transfer and filling operation can be performed in a stable state.

  The present invention is not limited to the above-described embodiment. For example, the connection side moving means and the connection state holding means may be operated in the front-rear direction, and if an electric power source is obtained, an electric structure such as a motor. It is also possible to employ a suitable engagement means as the connection state holding means. Furthermore, in addition to the medical liquid oxygen shown in the embodiment, low-temperature liquefied gas such as liquid oxygen, liquid nitrogen, liquid argon, and liquefied carbon dioxide gas used for industrial and experimental purposes is appropriately first. It is also possible to apply to a transfer-filling device for transfer-filling from the low-temperature liquefied gas container to the second low-temperature liquefied gas container.

DESCRIPTION OF SYMBOLS 11 ... Medical oxygen transfer-fill apparatus, 12 ... Liquid oxygen derivation | leading-out part, 12a ... Transfer-fill connection valve, 13 ... Gas discharge part, 13a ... Gas discharge valve, 14 ... Thermometer, 15 ... Base part, 15a ... Mounting piece, 15b, 15c ... guide rod support member, 16 ... connecting valve part for filling, 17 ... child container mounting part, 17a ... front wall, 17b ... rear wall, 18 ... connection side lever, 18a ... operation part, 19 ... separation side lever , 19a ... operation unit, 21 ... parent container, 22 ... evaporator, 23 ... oxygen gas supply valve, 24 ... saving valve, 25 ... safety valve, 26 ... parent side transfer / filling path, 27 ... transfer / filling source valve, 28 ... filling Valve ... 29 ... Pressure gauge, 31 ... Sub container, 32 ... Evaporator, 33 ... Oxygen gas supply valve, 34 ... Saving valve, 35 ... Safety valve, 36 ... Liquid oxygen introduction part, 36a ... Transfer filling connecting valve, 37 ... Gas Lead-out part, 37a ... Gas lead-out connection valve, 38 ... Transfer-filling connection part, 38 ... Positioning hole, 41 ... First guide rod, 41a ... First spring, 42a ... Positioning pin, 42b ... Contact member, 42c ... Supporting piece, 43a ... Second guide rod, 43b ... Third guide rod, 43c ... Guide 43d ... slide member 43e ... second spring 44 ... toggle mechanism 44a ... fixed shaft 44b ... first link member 44c ... moving shaft 44d ... second link member 44e ... connecting shaft 44f ... drive Pin 45a ... Connection side rotation angle shaft 45b ... Connection side gear member 45c ... Connection side drive member 45d ... Connection release member 45e ... Engagement recess 45f ... Shaft spring 45g ... Rotary damper 46a ... Separation side rotation angle shaft, 46b... Separation side gear member, 46c... Separation side drive member, 46d... Shaft spring, 46e. Separating member, 47a ... forced separation rotation shaft, 47b ... forcibly separating the drive member, 47c ... forced separation pushing portion, 47d ... spring, 48 ... Limit switch

Claims (7)

  In the low-temperature liquefied gas transfer and filling apparatus for transferring and filling the low-temperature liquefied gas from the first low-temperature liquefied gas container storing the low-temperature liquefied gas to the second low-temperature liquefied gas container filled with the low-temperature liquefied gas. The low-temperature liquefied gas container includes a low-temperature liquefied gas introduction section for introducing a low-temperature liquefied gas into the second low-temperature liquefied gas container, and a second low-temperature liquefied gas when the low-temperature liquefied gas is introduced into the second low-temperature liquefied gas container. A low-temperature liquefied gas transfer and filling device connected to the low-temperature liquefied gas introduction portion and having a low temperature in the first low-temperature liquefied gas container. A second low-temperature liquefied gas container in which the low-temperature liquefied gas lead-out section for leading the liquefied gas toward the second low-temperature liquefied gas container and the transfer filling connecting section of the second low-temperature liquefied gas container are detachably mounted. Mounting portion and second low-temperature liquid A connection side moving means for linearly moving the gas container mounting portion toward the low temperature liquefied gas outlet portion, and a separation side for moving the second low temperature liquefied gas container mounting portion away from the low temperature liquefied gas outlet portion When the moving means and the second low-temperature liquefied gas container mounting portion approach the low-temperature liquefied gas lead-out portion, the low-temperature liquefied gas introduction portion and the low-temperature liquefied gas lead-out portion are connected to each other. A low-temperature liquefied gas introduction part and a low-temperature liquefied gas lead-out part each having a transfer-filling coupling valve that is in a valve-open state only when a preset connection state is established. The gas deriving unit includes an exhaust valve that is opened only when the low temperature liquefied gas introducing unit and the low temperature liquefied gas deriving unit are in the preset connection state. Gas transfer-filling apparatus.   The low-temperature liquefaction according to claim 1, wherein the connection-side moving means includes a connection-side lever that pushes downward, and a toggle mechanism that is a combination of a plurality of link members that are actuated by pushing down the connection-side lever. Gas transfer filling device.   The connection state holding means is configured such that the toggle mechanism rotates beyond a dead point while the toggle mechanism reaches a state after connection from a state before connection of the transfer / fill connection valve. The low-temperature liquefied gas transfer and filling apparatus according to claim 2, which is held in   The separation-side moving means exceeds the dead point from the state in which the transfer-filling coupling valve is connected to the toggle mechanism by a separation-side lever that pushes downward, and a push-down operation of the separation-side lever. A separation-side link member that rotates to a state before connection of the transfer-filling connection valve, and an urging means that urges the second low-temperature liquefied gas container mounting portion in a direction away from the low-temperature liquefied gas lead-out portion. The low-temperature liquefied gas transfer and filling apparatus according to claim 3.   The said separation side moving means is provided with the pushing member which pushes the said 2nd low temperature liquefied gas container mounting part in the direction away from the said low temperature liquefied gas derivation | leading-out part by the pushing-down operation | movement of the said separation side lever. Low temperature liquefied gas transfer filling equipment.   The gas derivation unit is provided adjacent to the low-temperature liquefied gas introduction unit, and when the low-temperature liquefied gas introduction unit is connected to the low-temperature liquefied gas introduction unit, a low temperature is provided above the first low-temperature liquefied gas container. Simultaneously connected to a gas discharge section provided adjacent to the liquefied gas discharge section, the exhaust valve is opened, and the gas discharged from the gas discharge section is discharged to the outside of the apparatus through the gas discharge section. The low-temperature liquefied gas transfer and filling apparatus according to any one of claims 1 to 5.   The low-temperature liquefied gas transfer and filling device according to any one of claims 1 to 6, wherein the low-temperature liquefied gas is medical liquid oxygen.

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