CN108506496A - A kind of isolated form dynamic pressure sealing device and mechanical equipment - Google Patents
A kind of isolated form dynamic pressure sealing device and mechanical equipment Download PDFInfo
- Publication number
- CN108506496A CN108506496A CN201810287713.9A CN201810287713A CN108506496A CN 108506496 A CN108506496 A CN 108506496A CN 201810287713 A CN201810287713 A CN 201810287713A CN 108506496 A CN108506496 A CN 108506496A
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- China
- Prior art keywords
- seal assembly
- mounting base
- dynamic pressure
- flow pass
- accommodating cavity
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- 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.)
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Classifications
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- 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
-
- 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
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
Abstract
A kind of isolated form dynamic pressure sealing device of present invention offer and mechanical equipment.The device includes：First mounting base, the second mounting base, the first bellows dynamic pressure seal assembly, the first pressure release seal assembly, the second bellows dynamic pressure seal assembly and the second pressure release seal assembly；First mounting base is equipped with mounting hole, and the first flow pass is formed between one end and mounting hole hole wall of the second mounting base, and the second flow pass is formed between the other end and mounting hole hole wall of the second mounting base, and the second mounting base is equipped with flow channel；Flow channel inert gas is connected to, and the first flow pass and the second flow pass are connected to air dielectric；The inert gas flowed into from flow channel flows out after converging with the first medium revealed from the first bellows dynamic pressure seal assembly from the first flow pass, and the inert gas flowed into from flow channel flows out after converging with the second medium revealed from the second bellows dynamic pressure seal assembly from the second flow pass.The sealing and isolation of two kinds of media that cannot be contacted can be achieved in the present invention.
Description
Technical field
The present invention relates to technical field of engineering machinery more particularly to a kind of isolated form dynamic pressure sealing devices and mechanical equipment.
Background technology
In technical field of engineering machinery, it is commonly present the operating mode for needing that the medium that two kinds cannot contact is isolated, and
The purpose is realized there is no effective method at present, and therefore, how the medium that cannot be contacted to two kinds is sealed and is isolated pair
It is a urgent problem to be solved for those skilled in the art.
Invention content
A kind of isolated form dynamic pressure sealing device of present invention offer and mechanical equipment, to be carried out to two kinds of media that cannot be contacted
Sealing and isolation.
On the one hand, the embodiment of the present invention provides a kind of isolated form dynamic pressure sealing device, is applied to mechanical equipment, the machinery
Equipment includes transmission shaft and axle sleeve, and described device includes：It is sheathed on the first mounting base outside the axle sleeve, the second installation respectively
Seat, the first bellows dynamic pressure seal assembly, the first pressure release seal assembly, the second bellows dynamic pressure seal assembly and the second pressure release are close
Sealing assembly；Wherein,
First mounting base, which is equipped with, to be penetrated through by outer wall to the mounting hole of the annular of the axle sleeve, second mounting base
The first flow pass of annular, the other end and the installation of second mounting base are formed between one end and the mounting hole hole wall
The second flow pass of annular is formed between the hole wall of hole, second mounting base, which is equipped with, to be penetrated through by outer wall to the annular of the axle sleeve
Flow channel；The flow channel and pressure are that the inert gas of 0.3-0.5 megapascal is connected to, first flow pass and described
Second flow pass is connected to air dielectric；
First mounting base flows out interchannel with described first close to one end of first flow pass and is equipped with annular
The first accommodating cavity, the first bellows dynamic pressure seal assembly is partly installed in first accommodating cavity, with to described
One mounting base external pressure is that the first medium of 0.5-1.0 megapascal is sealed；First mounting base is close to second outflow
The second accommodating cavity that interchannel is equipped with annular, the second bellows dynamic pressure seal assembly are flowed out with described second in the one end in channel
Be partly installed in second accommodating cavity, with to the first mounting base external pressure be 0.5-1.0 megapascal second medium into
Row sealing, the second medium and the first medium are that be isolated and temperature is less than subzero 100 degrees Celsius of two media；
The third of annular is offered between first flow pass and the flow channel in second mounting base
Accommodating cavity, the first pressure release seal assembly are installed on the third accommodating cavity；Described flow into is led in second mounting base
The 4th accommodating cavity of annular is offered between road and second flow pass, the second pressure release seal assembly is installed on described
4th accommodating cavity；
The inert gas flowed into from the flow channel with revealed from the first bellows dynamic pressure seal assembly the
One medium flows out after converging from first flow pass, the inert gas flowed into from the flow channel with from second wave
The second medium revealed at line pipe dynamic pressure seal assembly flows out after converging from second flow pass.
Optionally, the first bellows dynamic pressure seal assembly includes rotating ring and stationary ring；Wherein,
The rotating ring fixing sleeve is set to outside the transmission shaft and is bonded with one end of the axle sleeve, and the rotating ring has rotating ring
Seal face offers dynamic pressure groove on the ring seal end face；
One end of the stationary ring is installed in first accommodating cavity, and the other end of the stationary ring has stationary ring sealed end
Face, the stationary ring seal face are opposite with the ring seal end face；
The rotating ring remains static, then the ring seal end face and the stationary ring seal face fit closely；
The rotating ring is operated with preset rotation speed, then the ring seal end face and the stationary ring seal face are opened.
Optionally, the preset rotation speed is greater than or equal to 20000 turns per minute.
Optionally, the first pressure release seal assembly and the second pressure release seal assembly are floating-ring seal component.
Optionally, the first pressure release seal assembly and the second pressure release seal assembly are labyrinth ring seal assembly.
On the other hand, the embodiment of the present invention provides a kind of mechanical equipment, including above-mentioned isolated form dynamic pressure sealing device.
In isolated form dynamic pressure sealing device provided in an embodiment of the present invention, by integrating two groups of bellows dynamic pressure seal assemblies
With two groups of pressure release seal assemblies, the two media that cannot be contacted can be respectively with inert gas all the way from different flow pass stream
Go out, therefore, the embodiment of the present invention can preferably realize the sealing and leakage of the medium that two kinds cannot contact.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of isolated form dynamic pressure sealing device provided in an embodiment of the present invention.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Isolated form dynamic pressure sealing device provided in an embodiment of the present invention is illustrated first below.
Referring to Fig. 1, the structural schematic diagram of isolated form dynamic pressure sealing device provided in an embodiment of the present invention is shown in figure.Such as
Shown in Fig. 1, which is applied to mechanical equipment, and mechanical equipment includes transmission shaft 1 and axle sleeve 2, which includes：It is sheathed on respectively
The first mounting base 3, the second mounting base 4, the first bellows dynamic pressure seal assembly 5, the first pressure release seal assembly 6 outside axle sleeve 2,
Two bellows dynamic pressure seal assemblies 7 and the second pressure release seal assembly 8.
Wherein, the first pressure release seal assembly 6 and the second pressure release seal assembly 8 have the function of two kinds of pressure release and sealing simultaneously.
Specifically, the first pressure release seal assembly 6 and the second pressure release seal assembly 8 can be floating-ring seal component；Alternatively, the first pressure release
Seal assembly 6 and the second pressure release seal assembly 8 can be labyrinth ring seal assembly.In the first pressure release seal assembly 6 and second
It, can in the first pressure release seal assembly 6 and the second pressure release seal assembly 8 in the case that pressure release seal assembly 8 is floating-ring seal component
To include floating ring.
First mounting base 3 is equipped with the installation of the annular by outer wall (being here the outer wall of the first mounting base 3) perforation to axle sleeve 2
Hole, one end (left end shown in Fig. 1) of the second mounting base 4 form the first flow pass 9 of annular between mounting hole hole wall, the
The other end (right end shown in Fig. 1) of two mounting bases 4 formed between mounting hole hole wall annular the second flow pass 10, second
Mounting base 4 is equipped with the flow channel 11 of the annular by outer wall (being here the outer wall of the second mounting base 4) perforation to axle sleeve 2；It flows into
Channel 11 is connected to the inert gas that pressure is 0.3-0.5 megapascal, and the first flow pass 9 and the second flow pass 10 are situated between with air
Matter is connected to.
It should be noted that the type for the inert gas being connected to flow channel 11 can be determined according to actual conditions,
It need to only ensure that inert gas and the first medium subsequently referred to and second medium do not react, the embodiment of the present invention pair
The concrete type of inert gas does not do any restriction.
First mounting base 3 is between one end (left end shown in Fig. 1) of the first flow pass 9 and the first flow pass 9
The first accommodating cavity 12 equipped with annular, the first bellows dynamic pressure seal assembly 5 is partly installed in the first accommodating cavity 12, with to the
One mounting base, 3 outer (being specially on the outside of the left side of the first mounting base 3 here) pressure is that the first medium of 0.5-1.0 megapascal carries out
Sealing.
Due to the first bellows dynamic pressure seal assembly 5 can to the first medium on the outside of the left side of the first mounting base 3 into
Row sealing, therefore, first medium are difficult to enter in the first accommodating cavity 12.
First mounting base 3 is close to one end (right end shown in Fig. 1) of the second flow pass 10 and the second flow pass 10
Between be equipped with annular the second accommodating cavity 13, the second bellows dynamic pressure seal assembly 7 is partly installed in the second accommodating cavity 13, with right
First mounting base, 3 external pressure is that the second medium of 0.5-1.0 megapascal is sealed, second medium and first medium be it is to be isolated and
Temperature is less than subzero 100 degrees Celsius of two media.
Wherein, the temperature of first medium and second medium may be the same or different.It should be pointed out that the present invention
In embodiment, first medium and second medium do not allow specially the two media being in contact, such as contact that can explode
The two media of equal perils.
The third accommodating cavity 14 of annular is offered between first flow pass 9 and flow channel 11 in the second mounting base 4,
First pressure release seal assembly 6 is installed on third accommodating cavity 14；Flow channel 11 and the second flow pass 10 in the second mounting base 4
Between offer the 4th accommodating cavity 15 of annular, the second pressure release seal assembly 8 is installed on the 4th accommodating cavity 15.
Specifically, in order to realize the reliable installation of the first pressure release seal assembly 6 and the second pressure release seal assembly 8, first lets out
The shape of densification sealing assembly 6 can be adapted with the shape of third accommodating cavity 14, and the shape of the second pressure release seal assembly 8 can be with
The shape of 4th accommodating cavity 15 is adapted.
It should be pointed out that being floating-ring seal component in the first pressure release seal assembly 6 and the second pressure release seal assembly 8
In the case of, the second mounting base 4 may be considered floating ring seat.
The inert gas flowed into from flow channel 11 and the first medium revealed from the first bellows dynamic pressure seal assembly 5
Flowed out from the first flow pass 9 after converging, the inert gas flowed into from flow channel 11 with from the second bellows dynamic pressure sealing group
The second medium revealed at part 7 flows out after converging from the second flow pass 10.
The operation principle of isolated form dynamic pressure sealing device provided in an embodiment of the present invention is illustrated below.
In the embodiment of the present invention, it is assumed that the first medium on the outside of 3 left side of the first mounting base is medium A, the first mounting base 3
Second medium on the outside of right side is medium B, the two media that medium A and medium B can have an accident when can contact.
When it is implemented, operating personnel can be passed through the indifferent gas that pressure is 0.4 megapascal in the inlet of flow channel 11
Body, in this way, inert gas can be flowed along direction shown in arrow J1 in Fig. 1.Later, it is circulated to close to axle sleeve in inert gas
When 2 position, inert gas can be leaked both sides to the left and right, i.e., along direction shown in arrow J2 to the first pressure release sealing group
Part 6 flows, and is flowed to the second pressure release seal assembly 8 along direction shown in arrow J3.
After the inert gas leaked to the first pressure release seal assembly 6 is by the first pressure release seal assembly 6, the indifferent gas
The pressure of body can greatly reduce, and the pressure is just slightly larger than the pressure of air dielectric at this time.Similarly, to the second pressure release sealing group
After the inert gas that part 8 leaks is by the second pressure release seal assembly 8, the pressure of the inert gas can also greatly reduce, at this time
The pressure is also just slightly larger than the pressure of air dielectric.
In addition, for the first bellows dynamic pressure seal assembly 5, although it can play medium A preferable sealing
Effect, but still have certain media A and leaked in the first accommodating cavity 12 by the first bellows dynamic pressure seal assembly 5, and
The pressure of the medium A leaked in the first accommodating cavity 12 can be decreased to the pressure slightly larger than air dielectric by 0.5 to 1.0 megapascal.
Similarly, for the second bellows dynamic pressure seal assembly 7, although its medium B can be played it is preferable close
Effect is sealed, but still has certain media B and is leaked in the second accommodating cavity 13 by the second bellows dynamic pressure seal assembly 7, and
And the pressure of the medium B leaked in the second accommodating cavity 13 can be also decreased to the pressure slightly larger than air dielectric by 0.5 to 1.0 megapascal
Power.
Later, leakage and by the inert gas of the first pressure release seal assembly 6 and leaking to Jie in the first accommodating cavity 12
Matter A moves toward one another the position W1 into Fig. 1 and converges, and along direction shown in arrow J4, is flowed together from the first flow pass 9
Go out.Similarly, leakage and by the inert gas of the second pressure release seal assembly 8 and leaking to the medium B in the second accommodating cavity 13
The position W2 moved toward one another into Fig. 1 converges, and along direction shown in arrow J5, is flowed out together from the first flow pass 9.By
It is flowed out respectively by different flow pass with inert gas all the way in the medium A and medium B of leakage, the medium A and medium B of leakage
It will not meet.
In isolated form dynamic pressure sealing device provided in an embodiment of the present invention, by integrating two groups of bellows dynamic pressure seal assemblies
With two groups of pressure release seal assemblies, the two media that cannot be contacted can be respectively with inert gas all the way from different flow pass stream
Go out, therefore, the embodiment of the present invention can preferably realize the sealing and leakage of the medium that two kinds cannot contact.
Optionally, as shown in Figure 1, the first bellows dynamic pressure seal assembly 5, which includes rotating ring 51, (can also be referred to as bellows
Rotating ring) and stationary ring 52 (bellows stationary ring can also be referred to as)；Wherein,
51 fixing sleeve of rotating ring is set to outside transmission shaft 1 and is bonded with one end of axle sleeve 2 (left end shown in Fig. 1), rotating ring 51
With ring seal end face 510, dynamic pressure groove is offered on ring seal end face 510.
Wherein, dynamic pressure groove concretely spiral dynamic pressure groove.It can easily be seen that axle sleeve 2 can play preferable limit to rotating ring 51
Position effect.
One end (right end shown in Fig. 1) of stationary ring 52 is installed in the first accommodating cavity 12, the other end (Fig. 1 of stationary ring 52
Shown in left end) have stationary ring seal face 520, stationary ring seal face 520 opposite with ring seal end face 510.
Rotating ring 51 remains static, then ring seal end face 510 and stationary ring seal face 520 fit closely；
Rotating ring 51 is operated with preset rotation speed, then ring seal end face 510 and stationary ring seal face 520 are opened.
Wherein, preset rotation speed is greater than or equal to 20000 turns per minute.Specifically, preset rotation speed can be per minute 20000
Turn, 24000 turns per minute or 28000 turns per minute, certainly, the value of preset rotation speed is not limited thereto, specifically can basis
Actual conditions determine that the embodiment of the present invention do not do this any restriction.Under preset rotation speed, it is believed that rotating ring 51 is high speed
Rotation status.
In the present embodiment, when rotating ring 51 remains static, ring seal end face 510 and stationary ring seal face 520 are close
Fitting, in this way can play first medium preferable sealing function, enter the first accommodating cavity 12 to avoid medium A.Rotating ring 51
When in high speed rotation state, ring seal end face 510 and stationary ring seal face 520 can be opened due to the effect of dynamic pressure groove,
At this moment, hold although having a small amount of first medium and entering first by the ring seal end face 510 of unlatching and stationary ring seal face 520
Set chamber 12, but this can't lead to meeting for first medium and second medium, also, it is close to effectively reduce rotating ring in this way
The fretting wear in sealing end face 510 and stationary ring seal face 520, to extend the service life of rotating ring 51 and stationary ring 52.
It should be pointed out that the structure of the first bellows dynamic pressure seal assembly 5 and the second bellows dynamic pressure seal assembly 7 is
Similar, the concrete structure of the second bellows dynamic pressure seal assembly 7 is with reference to the specific knot to the first bellows dynamic pressure seal assembly 5
The explanation of structure, details are not described herein.
To sum up, the present embodiment can preferably realize the sealing and leakage of the medium that two kinds cannot contact.
A kind of mechanical equipment provided in an embodiment of the present invention is illustrated below.
The embodiment of the present invention also provides a kind of mechanical equipment, which includes that above-mentioned isolated form dynamic pressure sealing fills
It sets.Wherein, the specific implementation process of the isolated form dynamic pressure sealing device is with reference to above description, the embodiment of the present invention to this not
Do any restriction.
Since isolated form dynamic pressure sealing device has above-mentioned technique effect, therefore the machine with the isolated form dynamic pressure sealing device
Tool equipment also has corresponding technique effect, and this is no longer going to repeat them.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.Obviously,
Various changes and modifications can be made to the invention by those skilled in the art without departing from the spirit and scope of the present invention.This
Sample, if these modifications and changes of the present invention is within the scope of the claims of the present invention and its equivalent technology, then this hair
It is bright to be also intended to include these modifications and variations.
Claims (6)
1. a kind of isolated form dynamic pressure sealing device, is applied to mechanical equipment, the mechanical equipment includes transmission shaft and axle sleeve, spy
Sign is that described device includes：It is dynamic that it is sheathed on the first mounting base outside the axle sleeve, the second mounting base, the first bellows respectively
Densification sealing assembly, the first pressure release seal assembly, the second bellows dynamic pressure seal assembly and the second pressure release seal assembly；Wherein,
First mounting base, which is equipped with, to be penetrated through by outer wall to the mounting hole of the annular of the axle sleeve, one end of second mounting base
The first flow pass of annular, the other end of second mounting base and the mounting hole hole are formed between the mounting hole hole wall
The second flow pass of annular is formed between wall, second mounting base, which is equipped with, to be penetrated through by outer wall to the inflow of the annular of the axle sleeve
Channel；The flow channel is connected to the inert gas that pressure is 0.3-0.5 megapascal, first flow pass and described second
Flow pass is connected to air dielectric；
First mounting base close to one end of first flow pass with described first flow out that interchannel is equipped with annular the
One accommodating cavity, the first bellows dynamic pressure seal assembly are partly installed in first accommodating cavity, with to first peace
Dress seat external pressure is that the first medium of 0.5-1.0 megapascal is sealed；First mounting base is close to second flow pass
One end with it is described second flow out interchannel be equipped with annular the second accommodating cavity, the portion of the second bellows dynamic pressure seal assembly
Divide and is installed on second accommodating cavity, it is close to be carried out to the second medium that the first mounting base external pressure is 0.5-1.0 megapascal
Envelope, the second medium and the first medium are that be isolated and temperature is less than subzero 100 degrees Celsius of two media；
The third for offering annular between first flow pass and the flow channel in second mounting base is accommodating
Chamber, the first pressure release seal assembly are installed on the third accommodating cavity；In second mounting base flow channel and
The 4th accommodating cavity of annular is offered between second flow pass, the second pressure release seal assembly is installed on the described 4th
Accommodating cavity；
The inert gas flowed into from the flow channel and first Jie revealed from the first bellows dynamic pressure seal assembly
Matter flows out after converging from first flow pass, the inert gas flowed into from the flow channel with from second bellows
The second medium revealed at dynamic pressure seal assembly flows out after converging from second flow pass.
2. the apparatus according to claim 1, which is characterized in that the first bellows dynamic pressure seal assembly include rotating ring and
Stationary ring；Wherein,
The rotating ring fixing sleeve is set to outside the transmission shaft and is bonded with one end of the axle sleeve, and the rotating ring has ring seal
End face offers dynamic pressure groove on the ring seal end face；
One end of the stationary ring is installed in first accommodating cavity, and the other end of the stationary ring has stationary ring seal face, institute
It is opposite with the ring seal end face to state stationary ring seal face；
The rotating ring remains static, then the ring seal end face and the stationary ring seal face fit closely；
The rotating ring is operated with preset rotation speed, then the ring seal end face and the stationary ring seal face are opened.
3. the apparatus of claim 2, which is characterized in that the preset rotation speed is greater than or equal to 20000 turns per minute.
4. device according to any one of claim 1-3, which is characterized in that the first pressure release seal assembly and described
Second pressure release seal assembly is floating-ring seal component.
5. device according to any one of claim 1-3, which is characterized in that the first pressure release seal assembly and described
Second pressure release seal assembly is labyrinth ring seal assembly.
6. a kind of mechanical equipment, which is characterized in that include the isolated form dynamic pressure sealing dress as described in any one of claim 1-5
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287713.9A CN108506496B (en) | 2018-04-03 | 2018-04-03 | Isolation type dynamic pressure sealing device and mechanical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287713.9A CN108506496B (en) | 2018-04-03 | 2018-04-03 | Isolation type dynamic pressure sealing device and mechanical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108506496A true CN108506496A (en) | 2018-09-07 |
| CN108506496B CN108506496B (en) | 2023-06-13 |
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ID=63379876
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810287713.9A Active CN108506496B (en) | 2018-04-03 | 2018-04-03 | Isolation type dynamic pressure sealing device and mechanical equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6311983B1 (en) * | 1989-09-26 | 2001-11-06 | The Boeing Company | Combination static lift-off face contact seal and floating ring shaft seal |
| JP2011007239A (en) * | 2009-06-24 | 2011-01-13 | Nippon Pillar Packing Co Ltd | Double mechanical seal |
| CN201943995U (en) * | 2010-07-08 | 2011-08-24 | 中国航天科技集团公司第六研究院第十一研究所 | Dynamic sealing device suitable for a hydrogen peroxide medium |
| WO2014061543A1 (en) * | 2012-10-19 | 2014-04-24 | イーグルブルグマンジャパン株式会社 | Bellows seal |
| CN105090518A (en) * | 2015-09-14 | 2015-11-25 | 成都赛乐化新机电有限公司 | Corrugated pipe type dry gas seal device and seal method |
-
2018
- 2018-04-03 CN CN201810287713.9A patent/CN108506496B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6311983B1 (en) * | 1989-09-26 | 2001-11-06 | The Boeing Company | Combination static lift-off face contact seal and floating ring shaft seal |
| JP2011007239A (en) * | 2009-06-24 | 2011-01-13 | Nippon Pillar Packing Co Ltd | Double mechanical seal |
| CN201943995U (en) * | 2010-07-08 | 2011-08-24 | 中国航天科技集团公司第六研究院第十一研究所 | Dynamic sealing device suitable for a hydrogen peroxide medium |
| WO2014061543A1 (en) * | 2012-10-19 | 2014-04-24 | イーグルブルグマンジャパン株式会社 | Bellows seal |
| CN105090518A (en) * | 2015-09-14 | 2015-11-25 | 成都赛乐化新机电有限公司 | Corrugated pipe type dry gas seal device and seal method |
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| Publication number | Publication date |
|---|---|
| CN108506496B (en) | 2023-06-13 |
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