CN105909799A - Ultralow-temperature dry gas seal - Google Patents
Ultralow-temperature dry gas seal Download PDFInfo
- Publication number
- CN105909799A CN105909799A CN201610444010.3A CN201610444010A CN105909799A CN 105909799 A CN105909799 A CN 105909799A CN 201610444010 A CN201610444010 A CN 201610444010A CN 105909799 A CN105909799 A CN 105909799A
- Authority
- CN
- China
- Prior art keywords
- ring
- gland
- axle sleeve
- corrugated tube
- dry gas
- 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.)
- Pending
Links
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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/36—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member connected by a diaphragm or bellow to the other member
- F16J15/363—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member connected by a diaphragm or bellow to the other member the diaphragm or bellow being made of metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to a sealing device, in particular to an ultralow-temperature dry gas seal. The ultralow-temperature dry gas seal comprises a shaft sleeve A, a shaft sleeve B, a moving ring, a static ring and glands. The shaft sleeve B is arranged on the shaft sleeve A in a sleeving mode and is in threaded connection with the shaft sleeve A. The end of the shaft sleeve A is provided with a flange which is matched with the shaft sleeve B to enable the moving ring to be fixed to the shaft sleeve A. A moving ring sealing gasket is arranged between the moving ring and the flange. The moving ring is in matched connection with the static ring through a sealing end surface. A corrugated pipe is connected to the position between the static ring and one of the glands. The corrugated pipe is in close fit with the static ring by applying pressure to the static ring through the corrugated pipe. An anti-rotating pin is further arranged between the static ring and one of the glands. An isolation seal body is arranged between one of the glands and the shaft sleeve B. By means of the technical scheme, the ultralow-temperature dry gas seal has the characteristics of being resistant to low temperature and good in sealing performance.
Description
Technical field
The present invention relates to sealing device, be specifically related to a kind of ultralow temperature dry gas seals.
Background technology
Traditional dry gas seals is because being affected by its structure material, as the main seal ingredient of its structure
Rubber ring due to the ultralow temperature being weak to less than-100 DEG C so that rubber ring is relied on bigger conventional dry gas close
Envelope cannot be used for ultralow-temperature operation conditions.
Summary of the invention
It is an object of the invention to provide a kind of for ultralow temperature equipment such as liquid oxygen pump, liquid nitrogen pump, LNG Loading Pump,
And use temperature ultralow temperature dry gas seals below-100 DEG C, there is low temperature resistant, the feature of good seal performance.
To achieve these goals, the present invention provides a kind of ultralow temperature dry gas seals, including axle sleeve A, axle sleeve B,
Rotating ring, stationary ring, gland, wherein, described axle sleeve B is sheathed on described axle sleeve A and screw thread connects therebetween
Connecing, the end of described axle sleeve A has flange, and described flange coordinates with described axle sleeve B to be fixed described rotating ring
On described axle sleeve A, being provided with ring seal pad between described rotating ring and described flange, described rotating ring is with described
Being connected by seal face between stationary ring, being connected between described stationary ring with described gland has corrugated tube, institute
State and be applied to the pressure of described stationary ring by corrugated tube between corrugated tube and described stationary ring and realize therebetween tight
Close fit, is additionally provided with stop pin, between described gland and described axle sleeve B between described stationary ring and described gland
It is provided with isolating seal.
Preferably, described corrugated tube uses metal bellows., corrugated tube has the sealing of spacer medium
Effect, the corrugated tube of metal material has low temperature resistant performance simultaneously, it is ensured that dry gas seals-100 DEG C with
Under ultralow-temperature operation conditions under normal operation.
Preferably, described ring seal pad uses metal cushion, has low temperature resistant feature, it is ensured that
Normal operation under dry gas seals ultralow-temperature operation conditions below-100 DEG C.
Preferably, described corrugated tube and described gland are welded as a whole structure, such gland and ripple
Pipe is without carrying out extra connection processing so that it is have more preferable overall performance.
Preferably, described gland being additionally provided with hole, location, described axle sleeve B is provided with locating slot, logical
Cross the installation of locating piece, it is ensured that the decrement of corrugated tube so that it is a size of setting value during installation.
Preferably, it is provided with between described stationary ring and described corrugated tube for correcting described corrugated tube and institute
Stating the centering ring of stationary ring laminating compactness, it is left with corrugated tube that corrugated tube left end end is stretched in described centering ring one end
End end interference fit connects, and the other end offsets with described stationary ring right-hand member inner peripheral surface in stretching into described stationary ring；
Under the location of centering ring, can guarantee that the laminating completely of seal face.
Preferably, described gland includes that gland A and gland B, described gland A and described gland B are solid
Fixed connecting, described gland B is set on axle sleeve B, described isolating seal be arranged on gland B and axle sleeve B it
Between；By the setting of multiple glands can the space of a certain degree of increase ultralow temperature dry gas seals internal cavity,
Cavity space is relatively big, makes ultralow temperature gas heating to safe temperature, it is ensured that the gas leaking to atmospheric side will not
By people's cold injury, it is ensured that the safety of working environment.
There is following advantage in the ultralow temperature dry gas seals using technique scheme: 1, owing to being provided with two axle sleeves,
Threaded by between axle sleeve, described flange coordinates with described axle sleeve B can be fixed on axle sleeve A by rotating ring
On, this kind of rotating ring has good sealing effect with the fixed form between axle sleeve compared with traditional fixed form
Feature；Additionally, in order to ensure the tight effect that stationary ring coordinates with the seal face of corrugated tube, at stationary ring and ripple
Being provided with centering ring in righting trough set by stricture of vagina tube end, stationary ring and the connecting end surface of corrugated tube need to ensure smooth flat
Whole, under the location of centering ring, can guarantee that the laminating completely of end face, corrugated tube is applied to the pressure of stationary ring in addition
Power, thus ensure sealing property, improve the sealing effectiveness of dry gas seals further；2, due to axle sleeve A's
Being provided with ring seal pad between end and rotating ring, ring seal pad is metal cushion, and corrugated tube is also metal material
Matter, the corrugated tube of metal cushion and metal material is respectively provided with low temperature resistant feature, it is to avoid traditional rubber ring
Using, sealing means all uses nonrubber circle to seal, stronger than the resistance to low temperature of seal with elastometic washer, ultralow temperature
The temperature resistant capability of dry gas seals depends on the performance of metal material itself, it is ensured that it has low temperature resistant feature.
Accompanying drawing explanation
Fig. 1 is the structural representation of ultralow temperature dry gas seals embodiment of the present invention；
Fig. 2 is the structural representation of ultralow temperature dry gas seals location and installation original state of the present invention.
Wherein: axle sleeve A1；Axle sleeve B2；Rotating ring 3；Stationary ring 4；Gland 5；Gland A51；Gland B52；
Ring seal pad 6；Corrugated tube 7；Stop pin 8；Isolating seal 9；Locating slot 10；Locating piece 11；Righting
Ring 12；Hole 13, location；Rotating shaft 14.
Detailed description of the invention
With embodiment, technical solution of the present invention is further illustrated below in conjunction with the accompanying drawings:
As shown in Figure 1 and Figure 2, the present invention provides a kind of ultralow temperature dry gas seals, including axle sleeve A1, axle sleeve
B2, rotating ring 3, stationary ring 4, gland 5, wherein, axle sleeve B2 is sheathed on axle sleeve A1 and screw thread therebetween
Connecting, the end of axle sleeve A1 has flange, and flange coordinates with axle sleeve B2 and is fixed on axle sleeve A1 by rotating ring 3,
It is provided with ring seal pad 6 between rotating ring 3 and flange, is coordinated even by seal face between rotating ring 3 with stationary ring 4
Connect, be connected between stationary ring 4 with gland 5 and have corrugated tube 7, by corrugated tube 7 between corrugated tube 7 and stationary ring 4
The pressure being applied to stationary ring 4 realizes closely cooperating therebetween, is additionally provided with anti-between stationary ring 4 and gland 5
Ship and resell on another market 8, prevent relatively rotating between stationary ring 4 and rotating ring 3, it is ensured that the stable operation of stationary ring 4, simultaneously
Corrugated tube 7 can be effectively protected, prevent corrugated tube 7 from being destroyed by the effect of torsion, pressure
It is provided with isolating seal 9 between lid 5 and axle sleeve B2.Additionally, corrugated tube 7 is metal material, corrugated tube 7 has
Having the sealing function of spacer medium, the corrugated tube 7 of metal material has low temperature resistant performance simultaneously, it is ensured that
Normal operation under dry gas seals ultralow-temperature operation conditions below-100 DEG C；Ring seal pad 6 is metal cushion,
Conventional material has copper, aluminum, mild steel, rustless steel, chrome-nickel steel, titanium monel metal etc., preferably
For copper profile of tooth sealing gasket, there is the low temperature resistant and feature of good sealing effect, it is ensured that dry gas seals is at-100 DEG C
The following normal operation under ultralow-temperature operation conditions；Corrugated tube 7 and gland 5 are welded as a whole structure, so press
Lid 5 and corrugated tube 7 are without carrying out extra connection processing so that it is have more preferable overall performance；Gland 5
On be additionally provided with location hole 13, axle sleeve B2 is provided with locating slot 10, by the installation of locating piece 11, it is ensured that ripple
The decrement of stricture of vagina pipe 7 so that it is a size of setting value during installation；Be provided with between stationary ring 4 and corrugated tube 7 for
Correcting corrugated tube 7 and stationary ring 4 to fit the centering ring 12 of compactness, it is left that corrugated tube is stretched in one end of centering ring 12
End end and corrugated tube left end end interference fit, in the other end of this centering ring 12 stretches into stationary ring 4 and stationary ring
4 right-hand member inner peripheral surfaces offset, and under the location of centering ring 12, can guarantee that the laminating completely of seal face；Pressure
Lid 5 includes that gland A51 and gland B52, gland A51 and gland B52 are fixing and connects, and gland B52 is set in
On axle sleeve B2, isolating seal 9 is arranged between gland B52 and axle sleeve B2.Setting by multiple glands
Can the space of a certain degree of increase ultralow temperature dry gas seals internal cavity, cavity space is relatively big, makes ultralow
Wet body is warming up to safe temperature, it is ensured that leakage causes the gas of atmospheric side will not be by people's cold injury, it is ensured that work
The safety of environment.
Axle sleeve A1 uses the material that linear expansion coefficient is bigger, and takes less gap, at ultralow temperature when design
When using under operating mode, axle sleeve A1 can report extremely with rotating shaft 14, effectively sealing revolving part can be carried out transmission reality
Sealing at existing axle sleeve.
Gasify when by seal face from the trace medium of seal face leakage, leak to gland A51 and pressure
In cavity between lid B52, owing to cavity space is bigger so that it is be warming up to safe temperature, it is ensured that leak to
The gas of atmospheric side will not be by people's cold injury.
During assembling, first passing through colds pressing is fixedly installed to axle sleeve A1 in rotating shaft 14, regulates axle sleeve A1's afterwards
Spacing between end flange and axle sleeve B2 end, fixes rotating ring 3, is adjusted centering ring 12,
Guarantee closely cooperating of connecting end surface between stationary ring 4 and corrugated tube 7, stop pin 8, fixing stationary ring are installed afterwards
The position of 4, locating piece 11, location are installed in the position finally by hole 13, location set on gland B52
One end of block 11 is fixed with gland B52, and locating slot 10 set on the other end and axle sleeve B2 is fixed, it is ensured that
The decrement of corrugated tube 7 so that it is a size of setting value during installation, unloads locating piece 11 afterwards.
Left end is media side, and right-hand member is air side, equipment in the running, due to axle sleeve A1 and rotating shaft 14
Between use fixing connection of colding pressing, effectively sealing revolving part can be carried out transmission and realizes the sealing at axle sleeve,
Medium can only be leaked in the cavity on the right side of stationary ring 4 by the gap between rotating ring 3 and axle sleeve A1, due to stationary ring
The right side of 4 connects corrugated tube 7, and stationary ring 4 is smooth with the connecting end surface of corrugated tube 7, at centering ring 12
Location under, can guarantee that the laminating completely of end face, thus ensure sealing property, by centering ring 12 and righting
The cooperation of groove, it is ensured that the tight effect that the seal face between stationary ring 4 with corrugated tube 7 coordinates, therefore,
Medium can only be revealed in the end that gland B52 and axle sleeve B2 coordinates, owing to gland B52 joins with axle sleeve B2
The end closed is provided with isolating seal 9, makes reach between gland B52 and axle sleeve B2 good sealing effectiveness,
The zero leakage of medium can be realized.
The present invention be directed to the Sealing Technology of ultralow temperature equipment, owing to its structure being not directed to rubber ring, so
Rubber ring can be prevented effectively from and cannot be used for the defect of low temperature, various worst cold case can be effectively adapted to.
Above-described is only the preferred embodiment of the present invention, it is noted that for those skilled in the art
For Yuan, on the premise of without departing from present configuration, it is also possible to make some deformation and improvement, these are also
Should be considered as protection scope of the present invention, these are all without affecting effect and the practicality of patent that the present invention implements
Property.
Claims (7)
1. ultralow temperature dry gas seals, including axle sleeve A, axle sleeve B, rotating ring, stationary ring and gland, its feature exists
In: described axle sleeve B is sheathed on described axle sleeve A and the most threaded, the end of described axle sleeve A
Having flange, described flange coordinates with described axle sleeve B and is fixed on by described rotating ring on described axle sleeve A, described
It is provided with ring seal pad between rotating ring and described flange, between described rotating ring and described stationary ring, passes through seal face
Being connected, being connected between described stationary ring with described gland has corrugated tube, described corrugated tube and described stationary ring it
Between be applied to the pressure of described stationary ring by corrugated tube and realize closely cooperating therebetween, described stationary ring and institute
State and between gland, be additionally provided with stop pin, between described gland and described axle sleeve B, be provided with isolating seal.
Ultralow temperature dry gas seals the most according to claim 1, it is characterised in that: described corrugated tube uses
Metal bellows.
Ultralow temperature dry gas seals the most according to claim 1, it is characterised in that: described ring seal pad
Use metal cushion.
Ultralow temperature dry gas seals the most according to claim 1, it is characterised in that: described corrugated tube and institute
State gland to be welded as a whole structure.
Ultralow temperature dry gas seals the most according to claim 1, it is characterised in that: also set on described gland
Hole, location, described axle sleeve B is had to be provided with locating slot.
6. according to the ultralow temperature dry gas seals according to any one of claim 1-4, it is characterised in that: described
It is provided with between stationary ring and described corrugated tube for correcting compactness of fitting between described corrugated tube and described stationary ring
Centering ring, described centering ring one end stretches into corrugated tube left end end and is connected with corrugated tube left end end interference fit,
The other end offsets with described stationary ring right-hand member inner peripheral surface in stretching into described stationary ring.
Ultralow temperature dry gas seals the most according to claim 1, it is characterised in that: described gland includes pressure
Lid A and gland B, described gland A and described gland B are fixing to be connected, and described gland B is set on axle sleeve B,
Described isolating seal is arranged between gland B and axle sleeve B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610444010.3A CN105909799A (en) | 2016-06-20 | 2016-06-20 | Ultralow-temperature dry gas seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610444010.3A CN105909799A (en) | 2016-06-20 | 2016-06-20 | Ultralow-temperature dry gas seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105909799A true CN105909799A (en) | 2016-08-31 |
Family
ID=56758384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610444010.3A Pending CN105909799A (en) | 2016-06-20 | 2016-06-20 | Ultralow-temperature dry gas seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105909799A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341961A (en) * | 2022-07-04 | 2022-11-15 | 昆明理工大学 | Dry gas sealing device for hydrogen liquefaction low-temperature turboexpander and assembling method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6464231B2 (en) * | 2000-12-20 | 2002-10-15 | Flowserve Management Company | Bellows seal with spring-loaded radial secondary seal |
| EP1323960A2 (en) * | 2001-12-28 | 2003-07-02 | Eagle Industry Co., Ltd. | Mechanical seal device |
| CN101235897A (en) * | 2008-03-03 | 2008-08-06 | 张家港华青科技有限公司 | Low temperature mechanical sealing device |
| CN101457841A (en) * | 2007-12-13 | 2009-06-17 | 丹东克隆集团有限责任公司 | Mechanical seal device for rubber bellows |
| CN101586666A (en) * | 2009-06-30 | 2009-11-25 | 蒋敏 | Anti-vortex wearable mechanical seal |
| CN103410969A (en) * | 2012-12-13 | 2013-11-27 | 宁波东联密封件有限公司 | Assembled type double-end-face corrugated pipe sealing device for high-temperature and easily-coked media |
| CN204921982U (en) * | 2015-06-26 | 2015-12-30 | 成都一通密封有限公司 | Alkylation reaction cauldron is special sealed |
| CN205841765U (en) * | 2016-06-20 | 2016-12-28 | 成都一通密封股份有限公司 | Ultralow temperature dry gas seals |
-
2016
- 2016-06-20 CN CN201610444010.3A patent/CN105909799A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6464231B2 (en) * | 2000-12-20 | 2002-10-15 | Flowserve Management Company | Bellows seal with spring-loaded radial secondary seal |
| EP1323960A2 (en) * | 2001-12-28 | 2003-07-02 | Eagle Industry Co., Ltd. | Mechanical seal device |
| CN101457841A (en) * | 2007-12-13 | 2009-06-17 | 丹东克隆集团有限责任公司 | Mechanical seal device for rubber bellows |
| CN101235897A (en) * | 2008-03-03 | 2008-08-06 | 张家港华青科技有限公司 | Low temperature mechanical sealing device |
| CN101586666A (en) * | 2009-06-30 | 2009-11-25 | 蒋敏 | Anti-vortex wearable mechanical seal |
| CN103410969A (en) * | 2012-12-13 | 2013-11-27 | 宁波东联密封件有限公司 | Assembled type double-end-face corrugated pipe sealing device for high-temperature and easily-coked media |
| CN204921982U (en) * | 2015-06-26 | 2015-12-30 | 成都一通密封有限公司 | Alkylation reaction cauldron is special sealed |
| CN205841765U (en) * | 2016-06-20 | 2016-12-28 | 成都一通密封股份有限公司 | Ultralow temperature dry gas seals |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341961A (en) * | 2022-07-04 | 2022-11-15 | 昆明理工大学 | Dry gas sealing device for hydrogen liquefaction low-temperature turboexpander and assembling method |
| CN115341961B (en) * | 2022-07-04 | 2024-05-24 | 昆明理工大学 | Dry gas sealing device for hydrogen liquefaction low-temperature turbine expander and assembling method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160831 |