CN104165230A - Ventilation type air cooling magnetic liquid sealing device - Google Patents
Ventilation type air cooling magnetic liquid sealing device Download PDFInfo
- Publication number
- CN104165230A CN104165230A CN201410380193.8A CN201410380193A CN104165230A CN 104165230 A CN104165230 A CN 104165230A CN 201410380193 A CN201410380193 A CN 201410380193A CN 104165230 A CN104165230 A CN 104165230A
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- China
- Prior art keywords
- pole shoe
- permanent magnet
- rubber seal
- shell
- cooling
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 63
- 239000007788 liquid Substances 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 title abstract description 18
- 238000009423 ventilation Methods 0.000 title abstract 4
- 239000011553 magnetic fluid Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- 230000005389 magnetism Effects 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 3
- 238000011089 mechanical engineering Methods 0.000 abstract description 2
- 239000000112 cooling gas Substances 0.000 abstract 1
- 239000003570 air Substances 0.000 description 19
- 239000007789 gas Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 8
- 239000005435 mesosphere Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 238000005498 polishing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- VQAPWLAUGBBGJI-UHFFFAOYSA-N [B].[Fe].[Rb] Chemical compound [B].[Fe].[Rb] VQAPWLAUGBBGJI-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
通气式气冷磁性液体密封装置，属于机械工程密封领域。成功解决了现有磁性液体密封装置在线速度20m/s以上时，密封间隙内磁性液体发热量大，使用寿命缩短甚至失效的问题。该装置包括外壳(2)、第一极靴(3)、第一永磁体(4)、第二极靴(5)、第二永磁体(6)、第三极靴(7)、轴套(10)、通气接头(12)等零件。该装置通过通气接头(12)、外壳(2)和第二永磁体(5)上的通气孔、密封腔室II和轴套(10)之间形成用于冷却气体循环的冷却循环通道，该通道可以确保各个极齿下磁性液体的冷却，并减少了传导路径，提高了冷却循环效率。
The utility model relates to a ventilating air-cooled magnetic liquid sealing device, which belongs to the field of mechanical engineering sealing. It successfully solves the problem that the magnetic liquid in the sealing gap generates a lot of heat when the linear speed of the existing magnetic liquid sealing device is above 20m/s, and the service life is shortened or even fails. The device includes a housing (2), a first pole piece (3), a first permanent magnet (4), a second pole piece (5), a second permanent magnet (6), a third pole piece (7), and a shaft sleeve (10), ventilation joint (12) and other parts. The device forms a cooling circulation channel for cooling gas circulation between the ventilation joint (12), the ventilation hole on the casing (2) and the second permanent magnet (5), the sealed chamber II and the shaft sleeve (10), the The channels can ensure the cooling of the magnetic liquid under each pole tooth, reduce the conduction path, and improve the efficiency of the cooling cycle.
Description
Technical field
The invention belongs to sealing field of mechanical engineering.
Background technique
Magnetic fluid sealing is applied in the sealed environment of major diameter, high linear speed, and the magnetic liquid in seal clearance often lost efficacy because of excess Temperature, and in the world, the cooling of major diameter, high linear speed operating mode magnetic hydraulic seal is also a difficult problem always.Therefore most important with research and development to the improvement of the cooling-cycle device of magnetic fluid sealing, directly affect working life of magnetic fluid seal device.
The present type of cooling the most widely has the type of cooling of process water cold trap in pole shoe, as described in documents 1 (publication number is the patent of CN 103574041A); There is the type of cooling that water jacket is installed at pole shoe excircle, as described in documents 2 (publication number is the patent of CN 200943707Y); Have and the good metal of heat-conducting property is installed in pole shoe both sides is carried out cooling mode, device as described in 524 pages of as theoretical in documents 3 < < magnetic liquids and application > >; Utilize in addition the self cooling mode of the blade rotation on shell, as described in documents 4 (patent No. is the patent of US 7338049B2); The described device of documents 5 (publication number is the patent of CN 103557335A) can be filled with cooled gas in chamber, carries out cooling.But all there is the problem that cooling effect is poor, heat dissipation potential is low in the cooling unit described in above document.
Seal arrangement as described in documents 1 (publication number is the patent of CN 103574041A), its cooling bath processing is in pole shoe, this device has three place's shortcomings: first, thereby reduce magnetic liquid voltage endurance capability in order not affect magnetic circuit distribution, cooling bath is conventionally far away apart from seal clearance, and heat conduction path is larger, and radiating efficiency is low, when linear velocity is during higher than 20m/s, its cooling effect will significantly reduce; The second, if in order to improve radiating efficiency, and the distance of dwindling cooling bath and seal clearance, sealing voltage endurance capability will significantly reduce, and does not possess practicability; The 3rd, cooling bath leaves in pole shoe, and the material of pole shoe is generally magnetic conductive metal, is generally stainless steel material, and thermal conductivity ratio gold, silver, copper and the aluminium of steel are much lower, so heat-conducting effect is limited.
The seal arrangement that documents 2 (publication number is the patent of CN 200943707Y) is described, its cooling principle is identical with documents 1, but its cooling effect is even not as good as the seal arrangement described in documents 1.
Seal arrangement described in documents 3 is installed the good slug of heat-conducting property in pole shoe both sides, its heat-conductive characteristic obviously improves, but do not there is circulating cooling system, in the long playing situation of seal arrangement, its cooling effect is not good, when linear velocity is higher than 20m/s, after stream time surpasses 5h, its cooling effect will significantly decline; Secondly, this Heat Conduction Material is arranged on pole shoe side, cannot carry out the magnetic liquid in the seal clearance near magnet place coolingly, when linear velocity is higher, magnetic liquid herein is early lost efficacy, and causes sealing voltage endurance capability and reduces even and lost efficacy.
The seal arrangement that documents 4 (patent No. is the patent of US 7338049B2) is described, its heat conduction that utilizes Sealing self to rotate to increase with ambient gas is carried out cooling, because ambient gas temperature is uncontrollable, heat conduction path is very long, therefore cooling effect is very limited, can only be applicable to the working environment that linear velocity is lower, the diameter of axle is less, not there is practicability.
The seal arrangement that documents 5 (publication number is the patent of CN 103557335A) is described, this device is filled with corresponding gas in chamber or the object that vacuumizes is not cooling for carrying out, but prevents from mutually infiltrating and producing blast between flammable explosive gas.If but change the gas in chamber into cooled gas, can play certain cooling effect, but its shortcoming is cooled gas can not form at seal clearance place effective circulating cooling, therefore can only carry out cooling to the magnetic liquid under outermost side pole tooth, internally the magnetic liquid under side pole tooth can not carry out effective cooling, when therefore on-line velocity is higher than 20m/s, the magnetic fluid sealing at interior side pole tooth place will lose efficacy, and voltage endurance capability is significantly declined.
Summary of the invention
The technical issues that need to address of the present invention are, when existing magnetic liquid rotating sealing device is worked under the environment of major diameter, high linear speed, because magnetic liquid heating value in seal clearance is large, easily to cause sealing shortening even working life and lost efficacy.Therefore a kind of ventilated type air cooling magnetic fluid seal device is provided.
The technical solution adopted for the present invention to solve the technical problems is:
Ventilated type air cooling magnetic fluid seal device, forms this device and comprises:
Magnetism resistent ring, shell, the first pole shoe, the first permanent magnet, the second pole shoe, the second permanent magnet, the 3rd pole shoe, screw, end cap, axle sleeve, the 3rd rubber seal, ventilating joint, the second rubber seal, the first rubber seal, magnetic liquid;
Form the connection between the each several part of this device:
The first described rubber seal is arranged in the groove on the first pole shoe cylindrical, formation is with the first pole shoe of rubber seal, the second rubber seal is arranged in the groove on the second pole shoe cylindrical, formation is with the second pole shoe of rubber seal, the 3rd rubber seal is arranged in the groove on the 3rd pole shoe cylindrical, forms the 3rd pole shoe with rubber seal;
Described magnetism resistent ring is arranged on the right side of rotating shaft boss, axle sleeve is arranged on to the right side of magnetism resistent ring; By the first pole shoe with rubber seal, the first permanent magnet, the second pole shoe with rubber seal, the second permanent magnet, sequentially pack in shell endoporus with the 3rd pole shoe of rubber seal; By screw, with being threaded on shell end face, end cap and shell are fixed, made each part axial location of enclosure; By the first pole shoe with rubber seal, the first permanent magnet, the second pole shoe with rubber seal, the second permanent magnet, with the 3rd pole shoe, the end cap of rubber seal, be inserted in rotating shaft together with shell, by being threaded shell axially locating on shell flange plate; In assembling process, after permanent magnet is installed, in the endoporus of permanent magnet, inject magnetic liquid;
It is characterized in that:
The first pole shoe, the first permanent magnet and the second pole shoe form the I of sealed chamber, and for sealing medium is sealed, the second pole shoe, the second permanent magnet and the 3rd pole shoe form the II of sealed chamber, for cooled gas is sealed; Chamber at different levels different from the past is the magnetic fluid seal device for sealed medium is sealed all.
Shell and the second permanent magnet are respectively processed with 1 vent, and in assembly process, two vent positions are identical, form path;
By being formed for the cool cycles passage of cooled gas circulation between the vent on ventilating joint, shell and the second permanent magnet, the II of sealed chamber and axle sleeve;
Axle sleeve is welded by three layers of different sleeve of internal diameter, forms hollow structure, is processed with a through hole for entering cooling air in the position that is positioned at the II of sealed chamber, is processed with endways a through hole for going out cooling air.In order to guarantee that cooled gas is evenly distributed along circumferential, the position of inlet hole and air outlet hole is 180 ° of distributions, the through-hole diameter that enters cooling air is greater than out the through-hole diameter of cooling air, allows inflation pressure higher than suction pressure simultaneously, makes the magnetic liquid in the 3rd pole shoe seal clearance obtain cooling.
Axle sleeve also can be welded on by the magnetic conductivity sleeve of three layers of different inner diameters on two identical annular plate surfaces, three layers of length sleeve are identical, the position that is positioned at the II of sealed chamber at outside sleeve is processed with a through hole for entering cooling air, near the left end of mesosphere sleeve, process a through hole simultaneously, at intermediate sleeve, process a through hole near corresponding to the middle part of the 3rd pole shoe or right-hand member, two via area in mesosphere equal the area that outside sleeve enters cooling air through hole, last annular plate surface between inner side sleeve and intermediate sleeve is processed with a through hole for going out cooling air.After welding, to the processing of polishing of medial and lateral sleeve, guarantee to meet dimension precision requirement, can ensure that like this magnetic liquid in the 3rd pole shoe seal clearance obtains fully cooling.
The present invention compares had beneficial effect with prior art:
By being formed for the cool cycles passage of cooled gas circulation between the vent on ventilating joint, shell and the second permanent magnet, the II of sealed chamber and axle sleeve, this passage can be guaranteed the cooling of each utmost point tooth magnetic liquid, and reduced conducting path, improved cooling cycle efficiency, successfully solved existing magnetic fluid seal device on-line velocity 20m/s when above, in seal clearance, magnetic liquid heating value is large, shortens the problem even losing efficacy working life.
Accompanying drawing explanation
Fig. 1 ventilated type air cooling magnetic fluid seal device structural drawing;
The radially partial sectional view of Fig. 2 axle sleeve;
Fig. 3 axle sleeve mesosphere sleeve and medial and lateral length sleeve same structure figure.
In Fig. 1: magnetism resistent ring (1), shell (2), the first pole shoe (3), the first permanent magnet (4), the second pole shoe (5), the second permanent magnet (6), the 3rd pole shoe (7), screw (8), end cap (9), axle sleeve (10), the 3rd rubber seal (11), ventilating joint (12), the second rubber seal (13), the first rubber seal (14), magnetic liquid (15).
Embodiment
The invention will be further described as embodiment to take accompanying drawing:
Ventilated type air cooling magnetic fluid seal device, as Fig. 1, sealing device comprises: magnetism resistent ring 1, shell 2, the first pole shoe 3, the first permanent magnet 4, the second pole shoe 5, the second permanent magnet 6, the 3rd pole shoe 7, screw 8, end cap 9, axle sleeve 10, the 3rd rubber seal 11, ventilating joint 12, the second rubber seal 13, the first rubber seal 14, magnetic liquid 15.
Form the connection between the each several part of this device:
The first described rubber seal 14 is arranged in the groove on the first pole shoe 3 cylindricals, formation is with the first pole shoe of rubber seal, the second rubber seal 13 is arranged in the groove on the second pole shoe 5 cylindricals, formation is with the second pole shoe of rubber seal, the 3rd rubber seal 11 is arranged in the groove on the 3rd pole shoe 7 cylindricals, forms the 3rd pole shoe with rubber seal;
Described magnetism resistent ring 1 is arranged on the right side of rotating shaft boss, axle sleeve 10 is arranged on to the right side of magnetism resistent ring 1; By the first pole shoe with rubber seal, the first permanent magnet 4, the second pole shoe with rubber seal, the second permanent magnet 6, sequentially pack in shell 2 endoporus with the 3rd pole shoe of rubber seal; By screw 8, with being threaded on shell 2 end faces, end cap 9 and shell 2 are fixed, made inner each part axials location of shell 2; By the first pole shoe with rubber seal, the first permanent magnet 4, the second pole shoe with rubber seal, the second permanent magnet 6, with the 3rd pole shoe, the end cap 9 of rubber seal, be inserted in rotating shaft together with shell 2, by being threaded shell 2 axially locating on shell 2 flange plate; In assembling process, after permanent magnet is installed, in the endoporus of permanent magnet, inject magnetic liquid.
For preventing that cooled gas is from housing to outward leakage, ventilating joint 12 can adopt static seal device with shell joint, as rubber seal rings for seal.
The cooled gas of this device can adopt the gases such as air, helium, nitrogen and carbon dioxide, by installation pump kind equipment externally, cooled gas is circulated, if adopt the higher helium of price to carry out cooling, can adopt the peristaltic pump of favorable sealing property, and externally pipeline installation cooling equipment carries out to gas cooling.
Axle sleeve 10 is welded on the annular plate surface of two same materials by the magnetic conductivity sleeve of three layers of different inner diameters, and wherein, mesosphere sleeve is slightly shorter than medial and lateral sleeve.The position that is positioned at the II of sealed chamber at outside sleeve is processed with a through hole for entering cooling air, and the annular plate surface between inner side sleeve and intermediate sleeve is processed with a through hole for going out cooling air.After welding, to the processing of polishing of medial and lateral sleeve, guarantee to meet dimension precision requirement.
Axle sleeve 10 also can be welded on by the magnetic conductivity sleeve of three layers of different inner diameters on two identical annular plate surfaces, three layers of length sleeve are identical, the position that is positioned at the II of sealed chamber at outside sleeve is processed with a through hole for entering cooling air, near the left end of mesosphere sleeve, process a through hole simultaneously, at intermediate sleeve, process a through hole near corresponding to the middle part of the 3rd pole shoe 7 or right-hand member, two via area in mesosphere equal the area that outside sleeve enters cooling air through hole, last annular plate surface between inner side sleeve and intermediate sleeve is processed with a through hole for going out cooling air.After welding, to the processing of polishing of medial and lateral sleeve, guarantee to meet dimension precision requirement, can ensure that like this magnetic liquid in the 3rd pole shoe 7 seal clearances obtains fully cooling.
The first pole shoe 3, the second pole shoe 5, the 3rd pole shoe 7 and axle sleeve 10 are selected the material that magnetic property is good, as electrical pure iron;
The first permanent magnet 4, the second permanent magnet 6 are all selected rubidium iron boron;
The kind of magnetic liquid is according to the magnetic liquid of the different base fluids of the different choice of sealing gas.
Claims (4)
1. ventilated type air cooling magnetic fluid seal device, forms this device and comprises:
Magnetism resistent ring (1), shell (2), the first pole shoe (3), the first permanent magnet (4), the second pole shoe (5), the second permanent magnet (6), the 3rd pole shoe (7), screw (8), end cap (9), axle sleeve (10), the 3rd rubber seal (11), ventilating joint (12), the second rubber seal (13), the first rubber seal (14), magnetic liquid (15);
Form the connection between the each several part of this device:
Described the first rubber seal (14) is arranged in the groove on the first pole shoe (3) cylindrical, formation is with the first pole shoe of rubber seal, the second rubber seal (13) is arranged in the groove on the second pole shoe (5) cylindrical, formation is with the second pole shoe of rubber seal, the 3rd rubber seal (11) is arranged in the groove on the 3rd pole shoe (7) cylindrical, forms the 3rd pole shoe with rubber seal;
Described magnetism resistent ring (1) is arranged on the right side of rotating shaft boss, axle sleeve (10) is arranged on to the right side of magnetism resistent ring (1); By the first pole shoe with rubber seal, the first permanent magnet (4), the second pole shoe with rubber seal, the second permanent magnet (6), sequentially pack in shell (2) endoporus with the 3rd pole shoe of rubber seal; By screw (8), with being threaded on shell (2) end face, end cap (9) and shell (2) are fixed, made inner each part axial location of shell (2); By the first pole shoe with rubber seal, the first permanent magnet (4), the second pole shoe with rubber seal, the second permanent magnet (6), with the 3rd pole shoe, the end cap (9) of rubber seal, be inserted in rotating shaft together with shell (2), by being threaded shell (2) axially locating on shell (2) flange plate; In assembling process, after permanent magnet is installed, in the endoporus of permanent magnet, inject magnetic liquid;
It is characterized in that:
The first pole shoe (3), the first permanent magnet (4) and the second pole shoe (5) form the I of sealed chamber, for sealed medium is sealed;
The second pole shoe (5), the second permanent magnet (6) and the 3rd pole shoe (7) form the II of sealed chamber, for cooled gas is sealed;
By being formed for the cool cycles passage of cooled gas circulation between the vent on ventilating joint (12), shell (2) and the second permanent magnet (6), the II of sealed chamber and axle sleeve (10).
2. ventilated type air cooling magnetic fluid seal device according to claim 1, is characterized in that:
Axle sleeve (10) is welded by three layers of different sleeve of internal diameter, form hollow structure, in the position that is positioned at the II of sealed chamber, be processed with a through hole for entering cooling air, be processed with endways a through hole for going out cooling air, the through-hole diameter that enters cooling air is greater than out the through-hole diameter of cooling air.
3. ventilated type air cooling magnetic fluid seal device according to claim 1, is characterized in that:
Inlet hole on axle sleeve (10) and the position of air outlet hole are 180 ° of distributions.
4. ventilated type air cooling magnetic fluid seal device according to claim 1, is characterized in that:
Shell (2) and the second permanent magnet (6) are respectively processed with 1 vent, and in assembly process, two vent positions are identical, form path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380193.8A CN104165230B (en) | 2014-08-04 | 2014-08-04 | Ventilation type air cooling magnetic liquid sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380193.8A CN104165230B (en) | 2014-08-04 | 2014-08-04 | Ventilation type air cooling magnetic liquid sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104165230A true CN104165230A (en) | 2014-11-26 |
| CN104165230B CN104165230B (en) | 2015-06-10 |
Family
ID=51909169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410380193.8A Expired - Fee Related CN104165230B (en) | 2014-08-04 | 2014-08-04 | Ventilation type air cooling magnetic liquid sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104165230B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482213A (en) * | 2014-12-15 | 2015-04-01 | 青岛科技大学 | Internal mixer rotor sealing device |
| CN106812948A (en) * | 2017-02-23 | 2017-06-09 | 北京交通大学 | The variable magnetic fluid seal device of seal clearance |
| CN113108064A (en) * | 2021-04-29 | 2021-07-13 | 北京交通大学 | Modularized magnetic liquid sealing device |
| CN113324039A (en) * | 2021-05-17 | 2021-08-31 | 清华大学 | Method for reducing starting torque of magnetic liquid sealing device |
| CN113324038A (en) * | 2021-05-17 | 2021-08-31 | 清华大学 | Method for making magnetic liquid sealing device resistant to high temperature |
| CN114370508A (en) * | 2021-12-23 | 2022-04-19 | 清华大学 | Magnetic liquid seal with cooling system |
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| US3991588A (en) * | 1975-04-30 | 1976-11-16 | General Electric Company | Cryogenic fluid transfer joint employing a stepped bayonet relative-motion gap |
| JPS55152962A (en) * | 1979-05-14 | 1980-11-28 | Fuji Electric Co Ltd | Magnetic fluid seal device |
| US4894007A (en) * | 1988-12-12 | 1990-01-16 | Thomson Consumer Electronics | Apparatus for providing fluid to a rotatable member |
| JPH04321881A (en) * | 1991-04-23 | 1992-11-11 | Tokin Corp | Magnetic seal rotation introducing machine |
| CN201297390Y (en) * | 2008-11-11 | 2009-08-26 | 中芯国际集成电路制造(上海)有限公司 | Magneto-fluid cooling structure and corresponding magneto-fluid sealing device |
-
2014
- 2014-08-04 CN CN201410380193.8A patent/CN104165230B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3991588A (en) * | 1975-04-30 | 1976-11-16 | General Electric Company | Cryogenic fluid transfer joint employing a stepped bayonet relative-motion gap |
| JPS55152962A (en) * | 1979-05-14 | 1980-11-28 | Fuji Electric Co Ltd | Magnetic fluid seal device |
| US4894007A (en) * | 1988-12-12 | 1990-01-16 | Thomson Consumer Electronics | Apparatus for providing fluid to a rotatable member |
| JPH04321881A (en) * | 1991-04-23 | 1992-11-11 | Tokin Corp | Magnetic seal rotation introducing machine |
| CN201297390Y (en) * | 2008-11-11 | 2009-08-26 | 中芯国际集成电路制造(上海)有限公司 | Magneto-fluid cooling structure and corresponding magneto-fluid sealing device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482213A (en) * | 2014-12-15 | 2015-04-01 | 青岛科技大学 | Internal mixer rotor sealing device |
| CN106812948A (en) * | 2017-02-23 | 2017-06-09 | 北京交通大学 | The variable magnetic fluid seal device of seal clearance |
| CN106812948B (en) * | 2017-02-23 | 2018-05-04 | 北京交通大学 | The variable magnetic fluid seal device of seal clearance |
| CN113108064A (en) * | 2021-04-29 | 2021-07-13 | 北京交通大学 | Modularized magnetic liquid sealing device |
| CN113108064B (en) * | 2021-04-29 | 2022-03-25 | 北京交通大学 | Modularized magnetic liquid sealing device |
| CN113324039A (en) * | 2021-05-17 | 2021-08-31 | 清华大学 | Method for reducing starting torque of magnetic liquid sealing device |
| CN113324038A (en) * | 2021-05-17 | 2021-08-31 | 清华大学 | Method for making magnetic liquid sealing device resistant to high temperature |
| CN113324039B (en) * | 2021-05-17 | 2022-03-11 | 清华大学 | Method for reducing starting torque of magnetic liquid sealing device |
| CN113324038B (en) * | 2021-05-17 | 2022-04-22 | 清华大学 | Method for making magnetic liquid sealing device resistant to high temperature |
| CN114370508A (en) * | 2021-12-23 | 2022-04-19 | 清华大学 | Magnetic liquid seal with cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104165230B (en) | 2015-06-10 |
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