CN110440005A - Local film thickness regulatable type mechanically-sealing apparatus between seal face - Google Patents
Local film thickness regulatable type mechanically-sealing apparatus between seal face Download PDFInfo
- Publication number
- CN110440005A CN110440005A CN201910806065.8A CN201910806065A CN110440005A CN 110440005 A CN110440005 A CN 110440005A CN 201910806065 A CN201910806065 A CN 201910806065A CN 110440005 A CN110440005 A CN 110440005A
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- stationary
- ring
- face
- seat
- stationary ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 23
- 239000006071 cream Substances 0.000 claims abstract description 42
- 238000003860 storage Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000001727 in vivo Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 11
- 230000033228 biological regulation Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- JTCWXISSLCZBQV-UHFFFAOYSA-N tribol Natural products CC(CO)CCC1OC2(O)CC3C4CC=C5CC(CCC5(C)C4CCC3(C)C2C1C)OC6OC(CO)C(OC7OC(C)C(O)C(O)C7O)C(O)C6OC8OC(C)C(O)C(O)C8O JTCWXISSLCZBQV-UHFFFAOYSA-N 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
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
- F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
- F16J15/3432—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface the geometry of the surface being able to vary during operation
-
- 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
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
Abstract
Local film thickness regulatable type mechanically-sealing apparatus between seal face, including positioning ring, rotating ring, rotating seat, stationary ring, stationary seat, end cover；Stationary ring is compacted on stationary seat by positioning ring, and the end face of rotating ring and the end face axial of stationary ring cooperate, and rotating ring is mounted on rotating seat and rotates with the axis, and goring push spring is housed between rotating ring and rotating seat；Stationary ring is mounted on stationary seat, and stationary seat is mounted on end cover；Shoe cream room is provided in stationary ring, shoe cream room is the blind hole for being opened on the stationary ring back side, and the top of shoe cream room is close to the end face of stationary ring；Plunger shaft is equipped in stationary seat, plunger shaft is to be opened on the blind hole of the binding face of stationary seat and stationary ring, and plunger shaft and shoe cream room are butted into and are parallel to axial unified cavity；Double-head piston is equipped in unified cavity, double-head piston one end is located in shoe cream room, the other end is located in plunger shaft, double-head piston is along unified cavity axial movement to change oil storage cavity pressure, plunger shaft is connected to pressure regulator valve with the inlet channel of end cover by passing through stationary seat, with regulating piston cavity pressure.
Description
Technical field
The present invention relates to shaft end mechanically-sealing apparatus, it is particularly suitable for needing to seal face fluid film thickness and fluid film rigidity
Carry out the mechanical seal application of on-line control.
Background technique
In the crucial turbomachinery such as reactor coolant main pump, mechanical seal plays vital effect.
The key of mechanical seal long-life and high reliability is to continue full-film lubrication, can neither excessive leakage, and cannot be in order to pursue
Low slip and make to lack lubrication between end face.When occurring lacking lubrication between slip is excessively high or end face, sealing dress will lead to
Set the variation of middle temperature and pressure, sealing reliability decline, or even failure.It can only be cold by closing reactor after seal failure
But agent pump repairs sealing, and close reactor coolant pump and caused by economic loss be huge.
As leak excessively or lack lubrication be all because dynamic and static ring end face between fluid film thickness change caused by, and
Sealing stability difference is then because fluid film rigidity is small between end face or even negative stiffness occurs and causes, by between control end face
Film thickness size and its distribution radially are regulation slips, it is ensured that seal one of important effective means of stable operation.In order to
Under the premise of not needing to close reactor coolant pump or other crucial turbomachineries, solves sealing excessive leakage or lack profit
Sliding problem, some scholars have carried out relevant research and have obtained certain solution, Salant (Salant R F,
Payne J W,Johnson W R,et al.Simulation of a hydraulically controllable
Reactor coolant pump seal [J] .Tribology International, 2018.) by using hydraulic-driven
Sealing element changes the film thickness between seal face, but its device is more complicated, realizes that practical road is also very long；Etsion
Et al. (Etsion I, Palmor Z, Harari N.Feasibility study of a controlled mechanical
seal.Lubr.Eng.1991；47:621-5.) and Zou et al. (Zou M, Green I.Clearance control of a
mechanical face seal.Tribol Trans 1999；42:535-40.) research think can be by closing sealing
The regulation of resultant force, thus the fluid film thickness between adjusting end face, and then to regulate and control slip size.
It is proposed of the invention, exactly in order to solve above-mentioned mechanical seal leakage rate and fluid film rigidity be difficult to Effective Regulation and
Existing regulation technology and the pressing issues that device is complicated and practicability is not high.
Summary of the invention
Aiming at the problem that existing mechanically-sealing apparatus slip and fluid film rigidity are difficult to, the present invention provides one kind
By local film thickness between adjusting seal face deformation regulation end face, it is controllable to realize that slip and fluid film rigidity regulate and control
Type mechanically-sealing apparatus.The device occurs stationary ring end face different degrees of by changing the Fluid pressure on stationary ring built-in piston
Local deformation, convergence shape fluid film thickness radially is formed between end face, it is final to realize regulation slip, increase liquid film
Rigidity improves the purpose of mechanical seal operation stability.
The technical scheme is that
Local film thickness regulatable type mechanically-sealing apparatus between seal face, including it is positioning ring 11, rotating ring 6, rotating seat 5, quiet
Ring 4, stationary seat 3, end cover 2；Stationary ring 4 is compacted on stationary seat 3 by positioning ring 11, prevents stationary ring from generating axis with respect to stationary seat
To displacement；The end face of rotating ring 6 and the end face axial of stationary ring 4 cooperate, and rotating ring 6 is mounted on rotating seat 5 and rotates with the axis, rotating ring 6
Goring push spring is housed between rotating seat 5；Stationary ring 4 is mounted on stationary seat 3, and stationary seat 3 is mounted on end cover 2；With quiet
Ring 4 is end face in face of the one side of rotating ring 6, and the one side of stationary ring 4 back to rotating ring 6 is the back side, is provided with shoe cream room 1c in stationary ring 4, stores up
Oil pocket 1c is the blind hole for being opened on 4 back side of stationary ring, and the top of shoe cream room 1c is close to the end face of stationary ring 4；Piston is equipped in stationary seat 3
Chamber 1a, plunger shaft 1a are the blind holes for being opened on the binding face of stationary seat 3 and stationary ring 4, and plunger shaft 1a and shoe cream room 1c is butted into flat
Row is in axial unified cavity；It is equipped with double-head piston 1b in unified cavity, the one end double-head piston 1b is located in shoe cream room 1c, another
End is located in plunger shaft 1a, and for double-head piston 1b along unified cavity axial movement to change pressure in shoe cream room 1c, plunger shaft 1a is logical
It crosses and is connected to pressure regulator valve 1e with the inlet channel 1d of end cover 2 across stationary seat 3, with pressure in regulating piston chamber 1a.
Preferably, the top of shoe cream room 1c between the end face of stationary ring 4 at a distance from be 0.5-2.5mm.
Further, stationary ring 4 is equipped with multiple piston pressure-regulating structures 1, and the depth of the shoe cream room 1c of each piston pressure-regulating structure 1 is pressed
It is successively increased according to distance of each piston pressure-regulating structure 1 on the outside of 4 end face of stationary ring inwardly.
Further, the amplification of the depth of the shoe cream room 1c of each piston pressure-regulating structure 1 is 0.05-0.25mm.
Preferably, the diameter B1 of shoe cream room 1c is less than the diameter B2 of plunger shaft 1a；Double-head piston 1b is located at shoe cream room 1c's
One end diameter is A1, and the diameter of the other end is A2, the small 2-10mm of A1 ratio A2.
Preferably, inner piston chamber 1a is equipped with the limited step of double-head piston 1b far from stationary ring side, and limitation double-head piston 1b is remote
Stroke from stationary ring side.
Preferably, shoe cream room 1c, plunger shaft 1a, double-head piston 1b three axial line be located at same and be parallel to axis
On straight line.
Working principle of the present invention is as follows:
Since double-head piston will receive the effect of the pressure in stationary ring in shoe cream room and stationary seat inner piston is intracavitary in the present invention
Pressure effect, the former is transmitted by piston by the latter's active force, and by the effect of oil storage cavity pressure, which generates change
Shape.To prevent stationary ring from being generated displacement to rotating ring direction by the effect of oil storage cavity pressure and piston friction power, in stationary ring and stationary seat
Positioning ring and stationary seat are consolidated using holding screw, and stationary ring and stationary seat are adjacent to by upper setting positioning ring, are prevented
Stationary ring is generated the slide displacement to rotating ring direction by the collective effect of piston cavity pressure and piston seal frictional force, it is ensured that stationary ring
The leakage of displacement and possible hydraulic fluid to axial will not be generated between stationary seat.If piston pressure-regulating is arranged inside stationary ring
Structure only one, then end face is only deformed at the radial position of setting shoe cream room on radially, herein between end face
Film thickness is smaller, is formed by end face outer diameter to this radial local convergence shape；If setting two and two or more are living inside stationary ring
Pressure adjusting structure is filled in, then the depth of shoe cream room is radially gradually deepened by end face outer diameter to internal diameter, before oil storage cavity pressure is identical
It puts, the local deformation that stationary ring end face occurs accordingly generates ascending changing rule, and result is formed in end face by end face
Outer diameter is in the film thickness distribution for restraining shape to internal diameter on the whole.Mechanical seal with this Thickness Variation rule, not only slip
Regulated and controled, and liquid film stiffness is promoted, seals operation stability and service life is also improved.In addition, keeping storing up
It, can be quiet by setting from low to high under conditions of the consistency of thickness of oil pocket depth or shoe cream room threshold value seal face is equal
The intracavitary pressure value size of ring seat inner piston, therefore equally obtain by end face outer diameter to interior through on the whole in the film thickness of convergence shape
Distribution, it is final to realize regulation slip, increase liquid film stiffness, improves the purpose of mechanical seal operation stability.
Technical solution proposed by the present invention uses hydropneumatic driving method, by the face deformation and its edge that change stationary ring
Radial Distribution and change realizes the regulation of end face film thickness, and then realizes the high efficiency regulatory to slip.
The invention has the advantages that being obtained by end face outer diameter to interior with simple and reliable mechanical structure through on the whole in convergence shape
Film thickness distribution, it is final to realize regulation slip, increase liquid film stiffness, improve mechanical seal operation stability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for having a piston pressure-regulating structure in apparatus of the present invention；
Fig. 2 a is the structural schematic diagram of shoe cream room and plunger shaft in stationary ring of the present invention；
Fig. 2 b is another structural schematic diagram of shoe cream room and plunger shaft in stationary ring of the present invention；
Fig. 3 is the structural schematic diagram that the present invention includes three piston pressure-regulating structures.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawing:
Referring to FIG. 1, FIG. 2 and FIG. 3:
As shown in Figure 1, local film thickness regulatable type mechanically-sealing apparatus between seal face, including positioning ring 11, rotating ring 6,
Rotating seat 5, stationary ring 4, stationary seat 3, end cover 2；Stationary ring 4 is compacted on stationary seat 3 by positioning ring 11, prevents stationary ring relatively quiet
Ring seat generates axial displacement；The end face of rotating ring 6 and the end face axial of stationary ring 4 cooperate, and rotating ring 6 is mounted on rotating seat 5 and with axis
Rotation is equipped with goring push spring between rotating ring 6 and rotating seat 5；Stationary ring 4 is mounted on stationary seat 3, and stationary seat 3 is mounted on sealed end
On lid 2；Using stationary ring 4 in face of rotating ring 6 one side as end face, the one side of stationary ring 4 back to rotating ring 6 is the back side, is provided with storage in stationary ring 4
Oil pocket 1c, shoe cream room 1c are the blind holes for being opened on 4 back side of stationary ring, and the top of shoe cream room 1c is close to the end face of stationary ring 4；Stationary seat 3
Interior to be equipped with plunger shaft 1a, plunger shaft 1a is the blind hole for being opened on the binding face of stationary seat 3 and stationary ring 4, plunger shaft 1a and shoe cream room
1c, which is butted into, is parallel to axial unified cavity；It is equipped with double-head piston 1b in unified cavity, the one end double-head piston 1b is located at oil storage
In chamber 1c, the other end is located in plunger shaft 1a, and double-head piston 1b is moved axially along unified cavity to change pressure in shoe cream room 1c,
Plunger shaft 1a is connected to pressure regulator valve 1e with the inlet channel 1d of end cover 2 by passing through stationary seat 3, with regulating piston chamber 1a internal pressure
Power.
As shown in Figure 2 a and 2 b, the shoe cream room 1c in the stationary ring 4 is between the wall surface and stationary ring end face of rotating ring side
Distance is 0.5-2.5mm.
As shown in Figure 2 a, the diameter B1 of shoe cream room 1c is less than the diameter B2 of plunger shaft 1a；Double-head piston 1b is located at shoe cream room
One end diameter of 1c is A1, and the diameter of the other end is A2, the small 2-10mm of A1 ratio A2.Structure as shown in Figure 2 b can also be used,
The diameter B1 of shoe cream room 1c is greater than the diameter B2 of plunger shaft 1a, and one end diameter A1 that double-head piston 1b is located at shoe cream room 1c is greater than another
The diameter A2 of one end.
As shown in figure 3, the piston pressure-regulating structure 1 can have multiple, quantitative range 1-6 in a sealing device
It is a；When the quantity of the piston pressure-regulating structure 1 is two and is more than two, shoe cream room in the stationary ring of each piston pressure-regulating structure 1
The depth of 1c is successively increased according to distance of the piston pressure-regulating structure 1 on the outside of end face inwardly, amplification 0.05-0.25mm.
Plunger shaft 1a is equipped with the limited step of double-head piston far from stationary ring side, for limiting double-head piston far from stationary ring side
Movement travel.
Shoe cream room 1c, stationary seat inner piston chamber 1a and double-head piston 1b three keep concentric in the stationary ring.
Content described in this specification is only enumerating to the way of realization of inventive concept, and protection scope of the present invention is not answered
When being seen as limited by stated concrete form, protection scope of the present invention also include those skilled in the art according to the present invention
Design it is conceivable that equivalent technologies mean.
Claims (7)
1. local film thickness regulatable type mechanically-sealing apparatus between seal face, including positioning ring (11), rotating ring (6), rotating seat
(5), stationary ring (4), stationary seat (3), end cover (2)；Stationary ring (4) are compacted the rotating ring on stationary seat (3) by positioning ring (11)
(6) end face axial of end face and stationary ring (4) cooperates, and rotating ring (6) is mounted on rotating seat (5) and rotates with the axis, rotating ring (6) with
Goring push spring is housed between rotating seat (5)；Stationary ring (4) is mounted on stationary seat (3), and stationary seat (3) is mounted on end cover (2)
On；It is characterized by: using stationary ring (4) in face of rotating ring (6) one side as end face, stationary ring (4) back to rotating ring (6) one side be carry on the back
Face, stationary ring (4) is interior to be provided with shoe cream room (1c), and shoe cream room (1c) is the blind hole for being opened on stationary ring (4) back side, shoe cream room (1c)
End face of the top close to stationary ring (4)；Plunger shaft (1a) is equipped in stationary seat (3), plunger shaft (1a) be opened on stationary seat (3) with
The blind hole of the binding face of stationary ring (4), plunger shaft (1a) and shoe cream room (1c) are butted into and are parallel to axial unified cavity；Unified chamber
It is equipped with double-head piston (1b) in vivo, double-head piston one end (1b) is located in shoe cream room (1c), and the other end is located in plunger shaft (1a),
Double-head piston (1b) is along unified cavity axial movement to change shoe cream room (1c) interior pressure, and plunger shaft (1a) is by passing through stationary seat
(3) it is connected to pressure regulator valve (1e) with the inlet channel (1d) of end cover (2), with regulating piston chamber (1a) interior pressure.
2. local film thickness regulatable type mechanically-sealing apparatus between seal face as described in claim 1, it is characterised in that: described
The top of shoe cream room (1c) in stationary ring (4) between stationary ring (4) end face at a distance from be 0.5-2.5mm.
3. local film thickness regulatable type mechanically-sealing apparatus between seal face as described in claim 1, it is characterised in that: stationary ring
(4) multiple piston pressure-regulating structures (1) are equipped with；When the quantity of the piston pressure-regulating structure (1) is two and is more than two, respectively
Distance of the depth of the shoe cream room (1c) of piston pressure-regulating structure (1) according to each piston pressure-regulating structure (1) on the outside of end face inwardly
It successively increases.
4. local film thickness regulatable type mechanically-sealing apparatus between seal face as claimed in claim 3, it is characterised in that: oil storage
The amplification of the depth of chamber (1c) is 0.05-0.25mm.
5. local film thickness regulatable type mechanically-sealing apparatus between seal face as described in claim 1, it is characterised in that: oil storage
The diameter B1 of chamber (1c) is less than the diameter B2 of plunger shaft (1a), and the diameter that double-head piston (1b) is located at one end of shoe cream room (1c) is
A1, the diameter of the other end are A2, the small 2-10mm of A1 ratio A2.
6. local film thickness regulatable type mechanically-sealing apparatus between seal face as described in claim 1, it is characterised in that: piston
Chamber (1a) is equipped with the limited step of double-head piston (1b), movement row of limitation double-head piston (1b) far from stationary ring side far from stationary ring side
Journey.
7. local film thickness regulatable type mechanically-sealing apparatus between seal face as claimed in claim 4, it is characterised in that: oil storage
The axial line of chamber (1c), stationary seat inner piston chamber (1a) and double-head piston (1b) three is located at the straight line that same is parallel to axis
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910806065.8A CN110440005B (en) | 2019-08-29 | Mechanical sealing device with adjustable and controllable local film thickness between sealing end surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910806065.8A CN110440005B (en) | 2019-08-29 | Mechanical sealing device with adjustable and controllable local film thickness between sealing end surfaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110440005A true CN110440005A (en) | 2019-11-12 |
| CN110440005B CN110440005B (en) | 2024-05-03 |
Family
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923060A (en) * | 2021-02-04 | 2021-06-08 | 柏燕 | Multi-end-face self-regulation starting steam turbine shaft end sealing method |
| CN112923061A (en) * | 2021-02-04 | 2021-06-08 | 柏燕 | Multi-end-face self-regulation and control enabled steam turbine shaft end sealing device |
| CN113494610A (en) * | 2021-07-08 | 2021-10-12 | 西华大学 | Floating ring structure with damping support and mechanical sealing device |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667245Y (en) * | 2003-11-28 | 2004-12-29 | 上海博格曼有限公司 | Oil-storing single-end surface machine sealing |
| CN201339574Y (en) * | 2009-01-16 | 2009-11-04 | 江苏淮阴船用机械有限公司 | Mechanical seal cooling device of screw rod pump |
| CN103836196A (en) * | 2014-01-26 | 2014-06-04 | 清华大学 | Intelligent fluid dynamic pressure mechanical seal device achieving rotating speed self-adaption |
| CN203926774U (en) * | 2014-06-17 | 2014-11-05 | 天津西澳维密封技术发展有限公司 | Mechanical sealing device for kettle top |
| CN204140882U (en) * | 2014-09-23 | 2015-02-04 | 中国舰船研究设计中心 | There is the sealing device for stern tube of pooling feature |
| CN104896104A (en) * | 2015-05-25 | 2015-09-09 | 浙江工业大学 | Online adjustable closing force gas lubricating mechanical sealing device |
| CN205677870U (en) * | 2016-06-18 | 2016-11-09 | 江苏益通流体科技有限公司 | There is the pump double seals of cooling structure |
| CN106122484A (en) * | 2016-08-18 | 2016-11-16 | 浙江工业大学 | Built-in sealing medium throttling regulation device for sound die mould dry gas seals |
| CN206377021U (en) * | 2017-01-09 | 2017-08-04 | 江苏鸿胜泵业科技有限公司 | A kind of Quimby pump |
| CN206555446U (en) * | 2017-03-16 | 2017-10-13 | 中国石油大学(华东) | A kind of self-lubricating non-contact mechanical seal device |
| CN108757945A (en) * | 2018-06-20 | 2018-11-06 | 西安交通大学 | A kind of hybrid lubrication end face seal structure |
| CN109185221A (en) * | 2018-10-23 | 2019-01-11 | 丹东克隆集团有限责任公司 | Become balance diameter, spring full protection type double mechanical seal |
| CN109798361A (en) * | 2019-03-05 | 2019-05-24 | 浙江工业大学 | A kind of adaptive static pressure dry gas sealing structure of band axial direction relief valve |
| CN209180105U (en) * | 2018-10-23 | 2019-07-30 | 丹东克隆集团有限责任公司 | Become balance diameter, spring full protection type double mechanical seal |
| CN210686993U (en) * | 2019-08-29 | 2020-06-05 | 浙江工业大学 | Mechanical sealing device with adjustable and controllable local film thickness between sealing end faces |
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667245Y (en) * | 2003-11-28 | 2004-12-29 | 上海博格曼有限公司 | Oil-storing single-end surface machine sealing |
| CN201339574Y (en) * | 2009-01-16 | 2009-11-04 | 江苏淮阴船用机械有限公司 | Mechanical seal cooling device of screw rod pump |
| CN103836196A (en) * | 2014-01-26 | 2014-06-04 | 清华大学 | Intelligent fluid dynamic pressure mechanical seal device achieving rotating speed self-adaption |
| CN203926774U (en) * | 2014-06-17 | 2014-11-05 | 天津西澳维密封技术发展有限公司 | Mechanical sealing device for kettle top |
| CN204140882U (en) * | 2014-09-23 | 2015-02-04 | 中国舰船研究设计中心 | There is the sealing device for stern tube of pooling feature |
| CN104896104A (en) * | 2015-05-25 | 2015-09-09 | 浙江工业大学 | Online adjustable closing force gas lubricating mechanical sealing device |
| CN205677870U (en) * | 2016-06-18 | 2016-11-09 | 江苏益通流体科技有限公司 | There is the pump double seals of cooling structure |
| CN106122484A (en) * | 2016-08-18 | 2016-11-16 | 浙江工业大学 | Built-in sealing medium throttling regulation device for sound die mould dry gas seals |
| CN206377021U (en) * | 2017-01-09 | 2017-08-04 | 江苏鸿胜泵业科技有限公司 | A kind of Quimby pump |
| CN206555446U (en) * | 2017-03-16 | 2017-10-13 | 中国石油大学(华东) | A kind of self-lubricating non-contact mechanical seal device |
| CN108757945A (en) * | 2018-06-20 | 2018-11-06 | 西安交通大学 | A kind of hybrid lubrication end face seal structure |
| CN109185221A (en) * | 2018-10-23 | 2019-01-11 | 丹东克隆集团有限责任公司 | Become balance diameter, spring full protection type double mechanical seal |
| CN209180105U (en) * | 2018-10-23 | 2019-07-30 | 丹东克隆集团有限责任公司 | Become balance diameter, spring full protection type double mechanical seal |
| CN109798361A (en) * | 2019-03-05 | 2019-05-24 | 浙江工业大学 | A kind of adaptive static pressure dry gas sealing structure of band axial direction relief valve |
| CN210686993U (en) * | 2019-08-29 | 2020-06-05 | 浙江工业大学 | Mechanical sealing device with adjustable and controllable local film thickness between sealing end faces |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923060A (en) * | 2021-02-04 | 2021-06-08 | 柏燕 | Multi-end-face self-regulation starting steam turbine shaft end sealing method |
| CN112923061A (en) * | 2021-02-04 | 2021-06-08 | 柏燕 | Multi-end-face self-regulation and control enabled steam turbine shaft end sealing device |
| CN113494610A (en) * | 2021-07-08 | 2021-10-12 | 西华大学 | Floating ring structure with damping support and mechanical sealing device |
| CN113494610B (en) * | 2021-07-08 | 2023-06-27 | 西华大学 | Floating ring structure with damping support and mechanical sealing device |
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