CN108468810A - The enhanced non-contact mechanical seal structure of liquid - Google Patents
The enhanced non-contact mechanical seal structure of liquid Download PDFInfo
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- CN108468810A CN108468810A CN201810483241.4A CN201810483241A CN108468810A CN 108468810 A CN108468810 A CN 108468810A CN 201810483241 A CN201810483241 A CN 201810483241A CN 108468810 A CN108468810 A CN 108468810A
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- Prior art keywords
- ring
- low pressure
- stationary
- axle sleeve
- liquid
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- 239000007788 liquid Substances 0.000 title claims abstract description 86
- 238000012856 packing Methods 0.000 claims abstract description 71
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 210000004907 gland Anatomy 0.000 claims abstract description 36
- 238000004140 cleaning Methods 0.000 claims abstract description 35
- 206010008469 Chest discomfort Diseases 0.000 claims abstract description 29
- 230000008676 import Effects 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract description 6
- 238000007373 indentation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 17
- 239000012530 fluid Substances 0.000 description 12
- 239000008187 granular material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000009863 secondary prevention Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
- Sealing Devices (AREA)
Abstract
The present invention relates to a kind of enhanced non-contact mechanical seal structures of liquid, it is related to mechanical seal field, including being socketed and fixing axle sleeve on the rotary shaft, the rotary packing ring being arranged on axle sleeve, the internal gland being fixed on pump housing, the stationary seal ring being slidably arranged on internal gland and the first elastic component being arranged between stationary seal ring and internal gland, rotary packing ring is towards on the end face of stationary seal ring or stationary seal ring is towards offering annular groove on the end face of rotary packing ring, the high pressure chest for accommodating highly pressurised liquid is formed between rotary packing ring and the outside diameter and cavity of stationary seal ring, the low pressure chamber for accommodating low pressure liquid is formed between internal side diameter and axle sleeve, it is arranged with outer press cover outside axle sleeve, import and outlet are offered on outer press cover.Cleaning low pressure liquid indentation annular groove is made rotary packing ring be separated with stationary seal ring by rotary shaft rotation, realizes the full liquid-film lubrication of seal face and contact is run, reduce the generation of heat, to considerably increase the service life of sealing.
Description
Technical field
The present invention relates to mechanical seal field, more particularly to a kind of enhanced non-contact mechanical seal structure of liquid.
Background technology
Mechanical seal is a kind of gland seal device of fluid rotary machine, also known as end face seal.Traditional contact type mechanical is close
Envelope is so that it is fully bonded, to prevent sealing medium from being leaked between seal face under the action of compensation mechanism elastic force.Its
The friction pair of dynamic/stationary ring composition is typically in boundary friction or mixed film friction state, in high parameter operating mode (high temperature, high pressure, high speed
Deng) under the conditions of, friction factor is larger, and power consumption is high, serious wear, short life, and operation and maintenance cost is higher.As aviation is navigated
It, the rapid development of the industry such as nuclear power, natural gas transportation and petrochemical industry, to mechanical seal, more stringent requirements are proposed, to
The progress of sealing technique is pushed.
But existing mechanical seal is using medium fluid as lubricating end surface, leakage part is from high pressure side leakage to low
Press side.It needs clean sealing medium and the suitable type of cooling to ensure the long-life of sealing.However, this be sealed in
Reply high viscosity, containing operating modes such as a large amount of silts when just encounter problem, a large amount of granule foreigns enter seal face, cause end face
It is seriously worn, and high viscosity fluid can not form effective lubrication and heat dissipation in end face, cause sealing life wretched insufficiency.
Invention content
The purpose of the present invention is to provide a kind of enhanced non-contact mechanical seal structures of liquid, have so that sealed end
The advantages of service life in face increases.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of enhanced non-contact mechanical seal structure of liquid, including be socketed and fix axle sleeve on the rotary shaft, setting exists
The rotary packing ring that is rotated simultaneously with axle sleeve on axle sleeve, is slidably arranged in the internal gland being fixed on pump housing axially along the sleeve
Stationary seal ring and setting on internal gland for coordinating with rotary packing ring are between stationary seal ring and internal gland for so that quiet close
Seal ring has the first elastic component to rotary packing ring side movement tendency always, and the rotary packing ring is towards on the end face of stationary seal ring
Or stationary seal ring is towards offering annular groove, the outside diameter and internal pressure of the rotary packing ring and stationary seal ring on the end face of rotary packing ring
The high pressure chest for accommodating highly pressurised liquid, shape between the rotary packing ring and the internal side diameter and axle sleeve of stationary seal ring are formed between lid
At the low pressure chamber for accommodating low pressure liquid, the outer press cover for coordinating with internal gland, the external pressure are arranged with outside the axle sleeve
It covers and offers for being passed through the import of cleaning low pressure liquid to low pressure chamber and for for the cleaning low pressure liquid stream in low pressure chamber
The outlet gone out, the axle sleeve are provided between axle sleeve and outer press cover for preventing the cleaning in low pressure chamber far from rotary packing ring end
The safety seal structure that low pressure liquid flows out between axle sleeve and outer press cover.
Through the above technical solutions, rotary shaft is after rotation, it is passed through cleaning low pressure liquid toward entrance, cleans low pressure liquid
The security seal that can be entered in low pressure chamber and be flowed at the sealing of rotary packing ring and stationary seal ring under the effect of gravity, and be arranged
Structure can allow cleaning low pressure liquid to be normally in low pressure chamber, be not easy to flow out between axle sleeve and outer press cover, reach sealing
Effect.Rotary packing ring high speed rotation sucks cleaning low pressure liquid in annular groove and keeps low pressure liquid lateral by the internal diameter of rotary packing ring
Outside diameter moves, and due to the incompressible characteristic of liquid, cleans low pressure liquid at this time and is produced between rotary packing ring and stationary seal ring
So that stationary seal ring is moved toward close to the first elastic component side, at this moment the first elastic component is compressed raw certain pressure, is moved close
Seal ring is detached from stationary seal ring.Enter high pressure chest after being pressurized by annular groove using low-pressure fluid, ensure that rotary packing ring and quiet close
Seal ring always works in clean fluid, and granule foreign or high viscosity medium in high pressure chest in medium is avoided to influence sealing fortune
Row.The full liquid-film lubrication of seal face and non-contact operation are realized since rotary packing ring and stationary seal ring separate, reduces operation
Power consumption and the generation for reducing heat, to considerably increase the service life of sealing.After rotary shaft stops operating, in the first bullet
Property part elastic force under stationary seal ring can be adjacent to again with rotary packing ring, formed sealing state.
Preferably, the safety seal structure includes that the rotating ring being arranged on axle sleeve is used for and moves with being arranged on outer press cover
Ring tight against stationary ring, the had for making stationary ring always to rotating ring side movement tendency is provided between the cavity and stationary ring
Two elastic components.
Through the above technical solutions, due to the setting of the second elastic component so that stationary ring can be supported with the rotating ring on axle sleeve always
It is tight and form mechanical seal state, it at this moment cleans after low pressure liquid flows into and is not easy to flow out between stationary ring and rotating ring, and only can be
Low pressure chamber internal circulation flow achievees the effect that allow cleaning low pressure liquid normally in low pressure chamber internal circulation flow；And if dynamic sealing
After sealing effect failure between ring and stationary seal ring, sealing between rotating ring and stationary ring can secondary prevention highly pressurised liquid pass through
Low pressure chamber flows out outer press cover.
Preferably, cooling inclined-plane is provided on the end face that the rotating ring fits with stationary ring.
Through the above technical solutions, can rub since rotary shaft is during high speed rotation, between rotating ring and stationary ring and
Heat is generated, therefore in rotating ring and stationary ring away from axle sleeve side setting cooling inclined-plane, cleaning low pressure liquid is in the process circulated
In can flow to cooling inclined-plane at, to take away a part friction generate heat, allow between rotating ring and stationary ring accelerate cooling, reach
The effect of cooling abrasive end face.
Preferably, first elastic component is located in low pressure chamber, is provided between the stationary seal ring and the first elastic component
First throw-out collar is provided between the internal gland and the first throw-out collar for preventing the liquid in high pressure chest from being contacted with the first elastic component
The first sealing ring.
Through the above technical solutions, under the elastic force effect of the first elastic component, the first throw-out collar can be toward close to rotary packing ring side
It is mobile, to push against stationary seal ring and rotary packing ring to form mechanical seal structure.And between internal gland and the first throw-out collar
The setting of one sealing ring enables to the highly pressurised liquid being in high pressure chest to be not easily accessible in low pressure chamber, reach allow first elasticity
Part is not easily susceptible to the influence of highly pressurised liquid to keep the effect of preferable elastic stage.
Preferably, it is provided between the axle sleeve and rotary shaft for preventing the liquid in high pressure chest from entering axle sleeve and rotation
High-pressure seal ring between axis.
Through the above technical solutions, the setting of high-pressure seal ring can prevent the high pressure liquid in high pressure chest to a certain extent
Body enters between axle sleeve and rotary shaft, and highly pressurised liquid is allowed not interfere with the rotation of rotary shaft and axle sleeve, reaches so that rotating
Axis can normally drive the effect that axle sleeve rotates.
Preferably, between the low pressure chamber and internal gland the second sealing ring, is both provided between internal gland and outer press cover.
Through the above technical solutions, the setting of the second sealing ring so that the cleaning low pressure liquid that is in low pressure chamber be not easy from
Gap, internal gland between cavity and internal gland and the gap between outer press cover flow to the external world, do not only reach the effect of sealing, and
And also to a certain extent so that work condition environment is good.
Preferably, the wall surface in low pressure chamber is located on the axle sleeve and is equipped with the cleaning low pressure liquid pumping for flowing into import
To the spiral pump structure of outlet, the spiral pump structure includes the pump efficiency ring being arranged on axle sleeve.
It, can be by axle sleeve side when rotary shaft is rotated with certain rotating speed through the above technical solutions, after installation pump efficiency ring
Liquid pumping is to the other side of pump efficiency ring.And pump efficiency ring be mounted on low pressure chamber in, therefore can in low pressure chamber be located at pump efficiency ring one
The cleaning low pressure liquid of side is pumped into the other side of pump efficiency ring, to realize cleaning low pressure liquid quickly following from import to outlet
Ring makes cleaning low pressure liquid clean better.
Preferably, first elastic component includes the first spring being arranged in low pressure chamber on internal gland, described interior
The inside spring base being connect with the first spring is provided on gland, one end of first throw-out collar is provided with to be connect with the first spring
The first support ring, first spring one end is connect with inside spring base, the other end is connect with the first support ring.
Through the above technical solutions, when rotary shaft does not rotate, the first spring on the spring base of inside is fixed in elasticity
To close to the first throw-out collar side stretching under effect, the first spring drives the first throw-out collar and stationary seal ring close to moving in drawing process
Seal ring side is close.Due to being provided with the first support ring so that the supporting surface between the first spring and the first throw-out collar becomes larger, and allows first
Spring can more be stablized when pushing the movement of the first throw-out collar, and can also prevent the two from generating mutually rotation to a certain extent, from
And achieve the effect that anti-rotation.
Preferably, the stationary seat for fixing stationary ring is provided on the outer press cover, second elastic component includes setting
Second spring between stationary seat and stationary ring, the stationary ring are provided with second connect with second spring close to second spring end
Support ring, described second spring one end is connect with stationary seat, the other end is connect with the second support ring.
Through the above technical solutions, when rotary shaft does not rotate, it is fixed on effect of the second spring on stationary seat in elasticity
Lower to close to the second throw-out collar side stretching, second spring drives stationary ring close to rotating ring side in drawing process, due to being provided with the
Two support rings so that second spring will not be in direct contact with stationary ring, therefore the elastic force that second spring generates will not cause stationary ring
Damage so that the service life is longer for stationary ring.
Preferably, the annular groove is arranged the internal side diameter in rotary packing ring and communicates or be arranged in stationary seal ring with low pressure chamber
It internal side diameter and is communicated with low pressure chamber, when annular groove is set on the end face of rotary packing ring, the annular groove is in the end face of rotary packing ring
On it is identical by the trend of radially inner side to radial outside and the direction of rotation of rotary packing ring, when annular groove is set to the end of stationary seal ring
When on face, the annular groove is on the end face of stationary seal ring by the rotation side of the trend and rotary packing ring of radially inner side to radial outside
To opposite.
Through the above technical solutions, when annular groove is set on the end face of rotary packing ring, rotary shaft rotation, annular groove follows one
Rotation is played, the low pressure cleaning fluid entered in slot is compressed to high pressure and is flowed to high pressure chest, to make end face separate.Its principle
It is to utilize the viscosity of liquid big and its incompressible characteristic.Similarly, when annular groove is set on the end face of stationary seal ring, principle
It is consistent with above-mentioned principle, it does not repeat excessively herein.After being arranged in this way so that rotary packing ring can be in the pressure of liquid with stationary seal ring
It is lower to separate and still reach sealing effect.Since in this case, rotary packing ring is in discrete state with stationary seal ring, makes
Must be contactless between the two, it reduces operation power consumption and reduces the generation of heat, to considerably increase the use longevity of sealing
Life.
In conclusion the present invention having the beneficial effect that in contrast to the prior art：After being pressurized by annular groove using low-pressure fluid
Into high pressure chest, it ensure that rotary packing ring and stationary seal ring always work in clean fluid, avoid in high pressure chest in medium
Granule foreign or high viscosity medium influence sealing operation.Since rotary packing ring is separated with stationary seal ring, to realize seal face complete
Liquid-film lubrication and non-contact operation reduce operation power consumption and reduce the generation of heat, to considerably increase making for sealing
Use the service life.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the structural schematic diagram of the annular groove end face of embodiment.
Reference numeral：1, rotary shaft；2, axle sleeve；21, rotary packing ring；211, annular groove；22, high-pressure seal ring；3, pump efficiency ring；
4, internal gland；41, stationary seal ring；42, the first spring；43, inside spring base；5, high pressure chest；6, low pressure chamber；7, outer press cover；71、
Import；72, it exports；73, stationary seat；8, safety seal structure；81, rotating ring；82, stationary ring；821, second spring；822, second
Pushing out ring；9, cool down inclined-plane；10, the first throw-out collar；101, the first support ring；11, the first sealing ring；12, the second sealing ring.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one：
As shown in Figure 1, 2, the enhanced non-contact mechanical seal structure of a kind of liquid, including be socketed and be fixed in rotary shaft 1
Axle sleeve 2, the internal gland 4 being fixed on pump housing, and 2 one end of axle sleeve is provided with rotary packing ring 21, along axle sleeve on internal gland 4
2, which slide axially, is provided with stationary seal ring 41, and stationary seal ring 41, which is used to seal with rotary packing ring 21, to be coordinated；Stationary seal ring 41 and internal pressure
It is provided with the first elastic component between lid 4, the first elastic component makes stationary seal ring 41 always has to be moved to 21 side of rotary packing ring
Trend.Rotary packing ring 21 is towards on the end face of stationary seal ring 41 or stationary seal ring 41 is towards offering on the end face of rotary packing ring 21
Annular groove 211；In the present embodiment, annular groove 211 is arranged the internal side diameter in rotary packing ring 21 and is communicated with low pressure chamber 6, and annular groove 211 exists
It is identical as the direction of rotation of rotary packing ring 21 by the trend of radially inner side to radial outside on the end face of rotary packing ring 21；Dynamic sealing
The high pressure chest 5 for accommodating highly pressurised liquid, rotary packing ring 21 are formed between the outside diameter and internal gland 4 of ring 21 and stationary seal ring 41
Between the internal side diameter and axle sleeve 2 of stationary seal ring 41 formed for accommodates cleaning low pressure liquid low pressure chamber 6, rotary packing ring 21 and
Low pressure chamber 6 is connected to;In the present embodiment, the pressure of the cleaning low pressure liquid in low pressure chamber 6 is relative to the high pressure in high pressure chest 5
The pressure of liquid is relatively low, and the cleaning low pressure liquid in low pressure chamber 6 can be normal pressure so that the cleaning low pressure liquid in low pressure chamber 6
It is not easy to reveal.It is arranged with the outer press cover 7 for coordinating with internal gland 4 outside axle sleeve 2, import 71 and outlet are offered on outer press cover 7
72, import 71 is used to be passed through cleaning low pressure liquid to low pressure chamber 6, and outlet 72 is for for the cleaning low pressure liquid stream in low pressure chamber 6
Go out；In order to enable the cleaning low pressure liquid in low pressure chamber 6 can be faster on 6 internal circulation flow of low pressure chamber, axle sleeve 2 positioned at low
Wall surface in pressure chamber 6 is equipped with the pump efficiency ring 3 that the cleaning low pressure liquid that import 71 flows into is pumped to outlet 72.Rotating ring 81 with it is quiet
Cooling inclined-plane 9 is provided on the end face that ring 82 fits, when the cleaning low pressure liquid that import 71 enters is in 6 inner recirculation flow of low pressure chamber
When dynamic, the setting on cooling inclined-plane 9 is so that the cleaning low pressure liquid circulated is more easy to take away between rotating ring 81 and stationary ring 82 relatively
The heat generated is rotated, is achieved the effect that cooling.
The pressure of high pressure chest 5 is more than the pressure in low pressure chamber 6, therefore the highly pressurised liquid in high pressure chest 5 has toward low pressure chamber 6
The trend of interior inflow.And enter high pressure chest 5 after low-pressure fluid is pressurized by annular groove 211 at this time, it ensure that rotary packing ring 21 and quiet
Sealing ring 41 always works in clean fluid, avoids the granule foreign of medium or high viscosity medium influence in high pressure chest 5 close
Envelope operation, therefore relatively steady state is formed, allow the highly pressurised liquid in high pressure chest 5 to be not easy to flow in low pressure chamber 6.And it revolves at this time
Shaft 1 drives rotary packing ring 21 rotating, and the full liquid film of seal face is realized since rotary packing ring 21 is separated with stationary seal ring 41
Lubrication and non-contact operation reduce operation power consumption and reduce the generation of heat, and the longevity is used to considerably increase sealing
Life.
As shown in Figure 1, the first elastic component is the first spring 42 being arranged in low pressure chamber 6 on internal gland 4, internal gland
The inside spring base 43 being connect with the first spring 42 is provided on 4, one end of the first throw-out collar 10 is provided with to be connected with the first spring 42
The first support ring 101 connect；First spring, 42 one end is connect with inside spring base 43, the other end is connect with the first support ring 101.
As shown in Figure 1, being provided with the first throw-out collar 10 between stationary seal ring 41 and the first spring 42, internal gland 4 is pushed away with first
The first sealing ring 11 is provided between ring 10.First sealing ring 11 is for preventing the highly pressurised liquid in high pressure chest 5 and the first spring
42 contacts so that the first spring 42 will not be influenced by highly pressurised liquid, to improve the service life of the first spring 42.
When rotary shaft 1 rotates, 21 high speed rotation of rotary packing ring sucks cleaning low pressure liquid in annular groove 211 and makes low pressure liquid
Body is moved from the internal side diameter of rotary packing ring 21 to outer diameter side, due to the incompressible characteristic of liquid, is cleaned low pressure liquid at this time and is existed
Certain pressure is generated between rotary packing ring 21 and stationary seal ring 41 so that stationary seal ring 41 is toward close to 42 side of the first spring
Mobile, at this moment the first spring 42 is compressed, and rotary packing ring 21 is detached from stationary seal ring 41, so that cleaning low pressure liquid enters
High pressure chest 5 ensure that rotary packing ring 21 and stationary seal ring 41 always work in clean fluid and remain non-contact
Sealing also avoids the granule foreign of medium or high viscosity medium in high pressure chest 5 from influencing sealing operation.When rotary shaft 1 does not rotate,
The first spring 42 on the spring base 43 of inside is fixed under the action of elasticity to close to 10 side stretching of the first throw-out collar, the first spring
42 drive the first throw-out collar 10 and stationary seal ring 41 close to 21 side of rotary packing ring in drawing process so that the first spring 42 with
Supporting surface between first throw-out collar 10 becomes larger, and can more stablize when the first spring 42 being allowed to push the movement of the first throw-out collar 10, and also
It can prevent the two from generating mutually rotation to a certain extent, to achieve the effect that anti-rotation.
As shown in Figure 1, axle sleeve 2 is provided with safety seal structure far from 21 end of rotary packing ring between axle sleeve 2 and outer press cover 7
8, safety seal structure 8 is for preventing the cleaning low pressure liquid in low pressure chamber 6 from being flowed out between axle sleeve 2 and outer press cover 7.Security seal
Structure 8 include the rotating ring 81 that is arranged on axle sleeve 2 and be arranged on outer press cover 7 for rotating ring 81 tight against stationary ring 82, external pressure
The stationary seat 73 for fixing stationary ring 82 is provided on lid 7.Second spring 821 is provided between stationary seat 73 and stationary ring 82, the
Two springs 821 are so that stationary ring 82 has the trend moved to 81 side of rotating ring always.Stationary ring 82 is provided with close to 821 end of second spring
The second support ring 822 being connect with second spring 821,821 one end of second spring connect with stationary seat 73, the other end and second
Pushing out ring 822 connects.
If the mechanical seal structure failure after long-term use between rotary packing ring 21 and stationary seal ring 41, at this time rotating ring
Sealing between 81 and stationary ring 82 can achieve the effect that secondary seal so that the liquid in high pressure chest 5 is still not easy to flow to outer
Boundary.And the sealing structure between the sealing structure between rotating ring 81 and stationary ring 82 and rotary packing ring 21 and stationary seal ring 41 is similar,
Therefore it does not repeat.
As shown in Figure 1, being provided with high-pressure seal ring 22 between axle sleeve 2 and rotary shaft 1, high-pressure seal ring 22 is located at axle sleeve 2
Close to 5 end of high pressure chest, high-pressure seal ring 22 enables to the sealing effect between axle sleeve 2 and rotary shaft 1 preferable；Low pressure chamber 6 with
Between internal gland 4, the second sealing ring 12 is both provided between internal gland 4 and outer press cover 7, the second sealing ring 12 enables to low pressure
Cleaning low pressure liquid in chamber 6 is not easy to leak outside, extraneous to reduce cleaning low pressure liquid pollution to a certain extent.
Embodiment two：
The present embodiment and the main distinction of embodiment one are：As shown in Figure 1, 2, annular groove 211 is arranged in stationary seal ring 41
Diameter side and communicated with low pressure chamber 6, annular groove 211 on the end face of stationary seal ring 41 by the trend of radially inner side to radial outside with it is dynamic
The direction of rotation of sealing ring 21 is opposite.
Specific work process：After starting the drive rotation of axle sleeve 2 of rotary shaft 1, cleaning low pressure liquid is passed through at import 71, this
Shi Qingjie low pressure liquids are in 6 internal circulation flow of low pressure chamber and enter in annular groove 211, and rotary packing ring 21 and stationary seal ring 41 are separated
And enter in high pressure chest 5, it ensure that rotary packing ring 21 and 41 ring of static seal always work in clean fluid, avoid high pressure chest
The granule foreign of medium or high viscosity medium influence sealing operation in 5, and rotary shaft 1 drives rotary packing ring 21 rotating at this time, by
Being separated in rotary packing ring 21 and stationary seal ring 41 realizes the full liquid-film lubrication of seal face and non-contact operation, reduces operation work(
The generation for consuming and reducing heat, to considerably increase the service life of sealing.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
The above is only the exemplary embodiment of the present invention, protection domain and is not intended to limit the present invention, this hair
Bright protection domain is determined by the attached claims.
Claims (10)
1. a kind of enhanced non-contact mechanical seal structure of liquid, it is characterised in that：Including being socketed and being fixed on rotary shaft (1)
On axle sleeve (2), be arranged on axle sleeve (2) with axle sleeve (2) and meanwhile rotation rotary packing ring (21), be fixed on it is interior on pump housing
Gland (4), slide axially the stationary seal ring being arranged on internal gland (4) for coordinating with rotary packing ring (21) along axle sleeve (2)
(41) and it is arranged between stationary seal ring (41) and internal gland (4) for so that stationary seal ring (41) has always to rotary packing ring
(21) the first elastic component of side movement tendency, the rotary packing ring (21) is towards on the end face of stationary seal ring (41) or stationary seal ring
(41) towards offering annular groove (211), the rotary packing ring (21) and stationary seal ring (41) on the end face of rotary packing ring (21)
The high pressure chest (5) for accommodating highly pressurised liquid, the rotary packing ring (21) and static seal are formed between outside diameter and internal gland (4)
The low pressure chamber (6) for accommodating low pressure liquid is formed between the internal side diameter and axle sleeve (2) of ring (41), is arranged outside the axle sleeve (2)
It is useful for the outer press cover (7) with internal gland (4) cooperation, is offered on the outer press cover (7) for being passed through cleaning to low pressure chamber (6)
The import (71) of low pressure liquid and the outlet (72) for being flowed out for the cleaning low pressure liquid in low pressure chamber (6), the axle sleeve (2)
It is provided between axle sleeve (2) and outer press cover (7) for preventing the cleaning low pressure in low pressure chamber (6) far from rotary packing ring (21) end
The safety seal structure (8) that liquid flows out between axle sleeve (2) and outer press cover (7).
2. the enhanced non-contact mechanical seal structure of liquid according to claim 1, it is characterised in that：The safety is close
Seal structure (8) include be arranged rotating ring (81) on axle sleeve (2) be arranged on outer press cover (7) for rotating ring (81) tight against
Stationary ring (82) is provided between the outer press cover (7) and stationary ring (82) for so that stationary ring (82) has always to rotating ring (81)
Second elastic component of side movement tendency.
3. the enhanced non-contact mechanical seal structure of liquid according to claim 2, it is characterised in that：The rotating ring
(81) it is provided with cooling inclined-plane (9) on the end face to fit with stationary ring (82).
4. the enhanced non-contact mechanical seal structure of liquid according to claim 1, it is characterised in that：First bullet
Property part be located in low pressure chamber (6), be provided with the first throw-out collar (10) between the stationary seal ring (41) and the first elastic component, it is described in
The first sealing ring for preventing the highly pressurised liquid in high pressure chest (5) from leaking is provided between gland (4) and the first throw-out collar (10)
(11)。
5. the enhanced non-contact mechanical seal structure of liquid according to claim 1, it is characterised in that：The axle sleeve
(2) be provided between rotary shaft (1) for prevent the highly pressurised liquid in high pressure chest (5) enter axle sleeve (2) and rotary shaft (1) it
Between high-pressure seal ring (22).
6. the enhanced non-contact mechanical seal structure of liquid according to claim 1, it is characterised in that：The low pressure chamber
(6) it is both provided with the second sealing ring (12) between internal gland (4), between internal gland (4) and outer press cover (7).
7. the enhanced non-contact mechanical seal structure of liquid according to claim 1, it is characterised in that：The axle sleeve
(2) wall surface being located in low pressure chamber (6) is equipped with import（71）The cleaning low pressure liquid of inflow is pumped to outlet (72)
Spiral pump structure, the spiral pump structure include the pump efficiency ring (3) being arranged on axle sleeve (2).
8. the enhanced non-contact mechanical seal structure of liquid according to claim 4, it is characterised in that：First bullet
Property part include first spring (42) of the setting in the low pressure chamber (6) on internal gland (4), be provided on the internal gland (4)
One end of the inside spring base (43) being connect with the first spring (42), first throw-out collar (10) is provided with and the first spring (42)
The first support ring (101) of connection, described first spring (42) one end connect with inside spring base (43), the other end and first
Pushing out ring (101) connects.
9. the enhanced non-contact mechanical seal structure of liquid according to claim 2, it is characterised in that：The outer press cover
(7) be provided with the stationary seat (73) for fixing stationary ring (82) on, second elastic component include setting stationary seat (73) with
Second spring (821) between stationary ring (82), the stationary ring (82) is provided with close to second spring (821) end and second spring
(821) the second support ring (822) connected, described second spring (821) one end connect with stationary seat (73), the other end and second
Support ring (822) connects.
10. the enhanced non-contact mechanical seal structure of liquid according to claim 1, it is characterised in that：The annular groove
(211) internal side diameter in rotary packing ring (21) is set and the internal side diameter in stationary seal ring (41) is communicated or be arranged with low pressure chamber (6)
And communicated with low pressure chamber (6), when annular groove (211) is set on the end face of rotary packing ring (21), the annular groove (211) is dynamic close
It is identical as the direction of rotation of rotary packing ring (21) by the trend of radially inner side to radial outside on the end face of seal ring (21), work as annular groove
(211) when being set on the end face of stationary seal ring (41), the annular groove (211) is inside by diameter on the end face of stationary seal ring (41)
The trend of side to radial outside is opposite with the direction of rotation of rotary packing ring (21).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810483241.4A CN108468810A (en) | 2018-05-18 | 2018-05-18 | The enhanced non-contact mechanical seal structure of liquid |
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| CN201810483241.4A CN108468810A (en) | 2018-05-18 | 2018-05-18 | The enhanced non-contact mechanical seal structure of liquid |
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ID=63260302
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| CN201810483241.4A Pending CN108468810A (en) | 2018-05-18 | 2018-05-18 | The enhanced non-contact mechanical seal structure of liquid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654228A (en) * | 2018-12-07 | 2019-04-19 | 宁波方力密封件有限公司 | A kind of dry friction mechanical seal assembly |
| CN109812581A (en) * | 2019-02-26 | 2019-05-28 | 浙江兰天机械密封件有限公司 | A kind of dry-grinding type combination sealing arrangement |
| CN110397741A (en) * | 2019-08-28 | 2019-11-01 | 东营海森密封技术有限责任公司 | A kind of shaft end mechanically-sealing apparatus |
| CN113441084A (en) * | 2021-06-30 | 2021-09-28 | 高道密封科技(苏州)有限公司 | Mechanical seal of ultrahigh pressure reaction kettle, reaction kettle with seal and method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056925A (en) * | 1990-03-12 | 1991-12-11 | 约翰起重机有限公司 | The improvement of barrier seal systems |
| CN1082154A (en) * | 1992-08-06 | 1994-02-16 | 约翰起重机有限公司 | Improved mechanical end face seal system |
| CN1492152A (en) * | 2003-09-01 | 2004-04-28 | 徐万福 | Screw groove non-contact leak-less mechanical seal system for centrifugal pump |
| CN203892237U (en) * | 2014-01-06 | 2014-10-22 | 东莞市华汇精密机械有限公司 | Mechanical sealing device used for hydrodynamic turbine |
| JP2015075209A (en) * | 2013-10-11 | 2015-04-20 | 日本ピラー工業株式会社 | Shaft seal device |
| CN204646764U (en) * | 2015-02-05 | 2015-09-16 | 崔小锋 | The oil-poor pump integrated type mechanical seal device of high temperature |
| CN205078787U (en) * | 2014-09-30 | 2016-03-09 | 自贡天锐科技有限公司 | A sealing device for mechanical equipment pivot |
| CN205244382U (en) * | 2013-12-05 | 2016-05-18 | 安徽亚兰密封件有限公司 | Mechanical seal device |
| CN208204017U (en) * | 2018-05-18 | 2018-12-07 | 四川日机密封件股份有限公司 | The enhanced non-contact mechanical seal structure of liquid |
-
2018
- 2018-05-18 CN CN201810483241.4A patent/CN108468810A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056925A (en) * | 1990-03-12 | 1991-12-11 | 约翰起重机有限公司 | The improvement of barrier seal systems |
| CN1082154A (en) * | 1992-08-06 | 1994-02-16 | 约翰起重机有限公司 | Improved mechanical end face seal system |
| CN1492152A (en) * | 2003-09-01 | 2004-04-28 | 徐万福 | Screw groove non-contact leak-less mechanical seal system for centrifugal pump |
| JP2015075209A (en) * | 2013-10-11 | 2015-04-20 | 日本ピラー工業株式会社 | Shaft seal device |
| CN205244382U (en) * | 2013-12-05 | 2016-05-18 | 安徽亚兰密封件有限公司 | Mechanical seal device |
| CN203892237U (en) * | 2014-01-06 | 2014-10-22 | 东莞市华汇精密机械有限公司 | Mechanical sealing device used for hydrodynamic turbine |
| CN205078787U (en) * | 2014-09-30 | 2016-03-09 | 自贡天锐科技有限公司 | A sealing device for mechanical equipment pivot |
| CN204646764U (en) * | 2015-02-05 | 2015-09-16 | 崔小锋 | The oil-poor pump integrated type mechanical seal device of high temperature |
| CN208204017U (en) * | 2018-05-18 | 2018-12-07 | 四川日机密封件股份有限公司 | The enhanced non-contact mechanical seal structure of liquid |
Non-Patent Citations (1)
| Title |
|---|
| 马伯文: "催化裂化装置技术问答 第2版", 28 February 2003, 中国石化出版社, pages: 486 - 488 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654228A (en) * | 2018-12-07 | 2019-04-19 | 宁波方力密封件有限公司 | A kind of dry friction mechanical seal assembly |
| CN109654228B (en) * | 2018-12-07 | 2023-09-08 | 宁波方力密封件有限公司 | Dry grinding mechanical seal assembly |
| CN109812581A (en) * | 2019-02-26 | 2019-05-28 | 浙江兰天机械密封件有限公司 | A kind of dry-grinding type combination sealing arrangement |
| CN110397741A (en) * | 2019-08-28 | 2019-11-01 | 东营海森密封技术有限责任公司 | A kind of shaft end mechanically-sealing apparatus |
| CN110397741B (en) * | 2019-08-28 | 2024-04-26 | 东营海森密封技术有限责任公司 | Shaft end mechanical sealing device |
| CN113441084A (en) * | 2021-06-30 | 2021-09-28 | 高道密封科技(苏州)有限公司 | Mechanical seal of ultrahigh pressure reaction kettle, reaction kettle with seal and method |
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Address after: 610045 Sichuan city of Chengdu province Wuhou District Vuko Xisi Road No. eight Applicant after: Zhongmi Holding Co., Ltd Address before: 610045 Sichuan city of Chengdu province Wuhou District Vuko Xisi Road No. eight Applicant before: Sichuan Sunny Seal Co., Ltd. |