CN103557335A - Inflatable magnetic liquid rotating seal device - Google Patents
Inflatable magnetic liquid rotating seal device Download PDFInfo
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- CN103557335A CN103557335A CN201310556884.4A CN201310556884A CN103557335A CN 103557335 A CN103557335 A CN 103557335A CN 201310556884 A CN201310556884 A CN 201310556884A CN 103557335 A CN103557335 A CN 103557335A
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- permanent magnet
- rubber seal
- pole shoe
- shell
- magnetic liquid
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Abstract
The invention discloses an inflatable magnetic liquid rotating seal device, belongs to the field of mechanical engineering seal and solves the potential safety hazard problem caused by gas leakage when the existing magnetic liquid seal device is used for sealing high-hazardous gas, i.e., hydrogen, under a complicated working condition. The device comprises a shell, pole shoes, rubber seal rings, magnetic liquid, permanent magnets, a shaft sleeve, a check ring, a gasket, air pressure control valves and other parts. According to the magnetic liquid seal device, a cavity between the inner diameter of the first permanent magnet and the outer diameter of the shaft sleeve is vacuumized, CO2 or inert gas is filled in a cavity between the inner diameter of the second permanent magnet and the outer diameter of the shaft sleeve, and a cavity between the inner diameter of the third permanent magnet and the outer diameter of the shaft sleeve is vacuumized, so that hazardous gas, especially explosive gas, cannot be in direct contact with air, and potential safety hazard problems can be solved.
Description
Technical field
The invention belongs to sealing field of mechanical engineering.
Background technique
Magnetic fluid sealing technology is because it has zero leakage, nothing wearing and tearing, and the life-span is long, and advantages of simple structure and simple is used by increasing industry gradually.Existing magnetic liquid rotating sealing device typical structure as publication number be that CN 102518811A and publication number are as described in the patent application of CN 202091519U.Existing magnetic liquid rotating sealing device, at sealing high-risk gas, during as hydrogen, makes hydrogen and air easily form explosive gas because magnetic fluid sealing has certain leakage rate, admittedly there is certain potential safety hazard.
Summary of the invention
The technical issues that need to address of the present invention are, existing magnetic liquid rotating sealing device is at sealing high-risk gas, during as hydrogen, because magnetic fluid sealing has certain leakage rate, make hydrogen and air easily form explosive gas, have certain potential safety hazard.Therefore a kind of gas-filled type magnetic liquid rotating sealing device is provided.
The technical solution adopted for the present invention to solve the technical problems is:
Gas-filled type magnetic liquid rotating sealing device, forms this device and comprises:
Packing ring, shell, the first pole shoe, the first permanent magnet, the second pole shoe, the second permanent magnet, the 3rd pole shoe, the 3rd permanent magnet, the 4th pole shoe, screw, back-up ring, jump ring, axle sleeve, the 4th rubber seal, the 3rd air flue, the 3rd pneumatic control valve, the 3rd rubber seal, the second pneumatic control valve, the second air flue, the second rubber seal, the first pneumatic control valve, the first air flue, the first rubber seal, rubber seal;
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, formation is with the 3rd pole shoe of rubber seal, and the 4th rubber seal is arranged in the groove on the 4th pole shoe cylindrical, forms the 4th pole shoe with rubber seal;
Described packing ring is arranged on the right side of rotating shaft boss, axle sleeve is arranged on to the right side of packing ring, jump ring is arranged in the right groove of rotating shaft, makes axle sleeve axially locating; By the first pole shoe with rubber seal, the first permanent magnet, the second pole shoe with rubber seal, the second permanent magnet, the 3rd pole shoe with rubber seal, the 3rd permanent magnet, sequentially pack in shell endoporus with the 4th pole shoe of rubber seal; By screw, with being threaded on shell end face, back-up ring 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, the 3rd pole shoe with rubber seal, the 3rd permanent magnet, with the 4th pole shoe, the back-up ring 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;
Shell is connected with the through hole of the first permanent magnet, form the first air vent, at the first air vent, the first pneumatic control valve is installed, can be according to concrete operating mode, between the first permanent magnet and axle sleeve, in cavity, extract or be filled with gas out, as carbon dioxide, nitrogen and inert gas, regulate needed force value;
Shell is connected with the through hole of the second permanent magnet, form the second air vent, at the second air vent, the second pneumatic control valve is installed, can be according to concrete operating mode, between the second permanent magnet and axle sleeve, in cavity, extract or be filled with gas out, as carbon dioxide, nitrogen and inert gas, regulate needed force value;
Shell is connected with the through hole of the 3rd permanent magnet, form the 3rd air vent, at the 3rd air vent, the 3rd pneumatic control valve is installed, can be according to concrete operating mode, between the 3rd permanent magnet and axle sleeve, in cavity, extract or be filled with gas out, as carbon dioxide, nitrogen and inert gas, regulate needed force value;
The first permanent magnet left end polarity is N(S) utmost point, right-hand member polarity is S(N) utmost point, and the second permanent magnet left end polarity is S(N) utmost point, right-hand member polarity is N(S), the 3rd permanent magnet left end polarity is N(S) utmost point, right-hand member polarity is S(N) utmost point.
The present invention compares had beneficial effect with prior art:
By the cavity between the first permanent magnet internal diameter and axle sleeve external diameter, vacuumize, cavity between the second permanent magnet internal diameter and axle sleeve external diameter is filled with carbon dioxide, nitrogen or inert gas, cavity between the 3rd permanent magnet internal diameter and axle sleeve external diameter vacuumizes, and this explosive gas of hazardous gas, especially hydrogen can directly not contacted with air.
Accompanying drawing explanation
Fig. 1 gas-filled type magnetic liquid rotating sealing device structural drawing.
In Fig. 1: packing 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), the 3rd permanent magnet (8), the 4th pole shoe (9), screw (10), back-up ring (11), jump ring (12), axle sleeve (13), the 4th rubber seal (14), the 3rd air flue (15), the 3rd pneumatic control valve (16), the 3rd rubber seal (17), the second pneumatic control valve (18), the second air flue (19), the second rubber seal (20), the first pneumatic control valve (21), the first air flue (22), the first rubber seal (23), rubber seal (24).
Embodiment
The invention will be further described as embodiment to take accompanying drawing:
Gas-filled type magnetic liquid rotating sealing device, as Fig. 1, sealing device comprises: packing 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, the 3rd permanent magnet 8, the 4th pole shoe 9, screw 10, back-up ring 11, jump ring 12, axle sleeve 13, the 4th rubber seal 14, the 3rd air flue 15, the 3rd pneumatic control valve 16, the 3rd rubber seal 17, the second pneumatic control valve 18, the second air flue 19, the second rubber seal 20, the first pneumatic control valve 21, the first air flue 22, the first rubber seal 23, rubber seal 24.
Form the connection between the each several part of this device:
The first described rubber seal 23 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 20 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 17 is arranged in the groove on the 3rd pole shoe 7 cylindricals, formation is with the 3rd pole shoe of rubber seal, and the 4th rubber seal 14 is arranged in the groove on the 4th pole shoe 9 cylindricals, forms the 4th pole shoe with rubber seal;
Described packing ring 1 is arranged on the right side of rotating shaft boss, axle sleeve 13 is arranged on to the right side of packing ring 1, jump ring 12 is arranged in the right groove of rotating shaft, makes axle sleeve 13 axially locating; 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, the 3rd pole shoe with rubber seal, the 3rd permanent magnet 8, sequentially pack in shell 2 endoporus with the 4th pole shoe of rubber seal; By screw 11, with being threaded on shell 2 end faces, back-up ring 11 and shell 2 are fixed, made each part axial location of enclosure; 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, the 3rd pole shoe with rubber seal, the 3rd permanent magnet 8, with the 4th pole shoe, the back-up ring 11 of rubber seal, be inserted in rotating shaft together with shell 2, by being threaded shell axially locating on shell 2 flange plate; In assembling process, after permanent magnet is installed, in the endoporus of permanent magnet, inject magnetic liquid;
The first permanent magnet 4 left end polarity are N(S) utmost point, right-hand member polarity is S(N) utmost point, and the second permanent magnet 6 left end polarity are S(N) utmost point, right-hand member polarity is N(S), the 3rd permanent magnet 8 left end polarity are N(S) utmost point, right-hand member polarity is S(N) utmost point.
The first pole shoe 3, the second pole shoe 5, the 3rd pole shoe 7, the 4th pole shoe 9 and axle sleeve 13 are selected the material that magnetic property is good, as electrical pure iron;
The first permanent magnet 4, the second permanent magnet 6, the 3rd permanent magnet 8 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 (2)
1. gas-filled type magnetic liquid rotating sealing device, forms this device and comprises:
Packing 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), the 3rd permanent magnet (8), the 4th pole shoe (9), screw (10), back-up ring (11), jump ring (12), axle sleeve (13), the 4th rubber seal (14), the 3rd air flue (15), the 3rd pneumatic control valve (16), the 3rd rubber seal (17), the second pneumatic control valve (18), the second air flue (19), the second rubber seal (20), the first pneumatic control valve (21), the first air flue (22), the first rubber seal (23), rubber seal (24),
Form the connection between the each several part of this device:
Described the first rubber seal (23) 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 (20) 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 (17) is arranged in the groove on the 3rd pole shoe (7) cylindrical, formation is with the 3rd pole shoe of rubber seal, the 4th rubber seal (14) is arranged in the groove on the 4th pole shoe (9) cylindrical, forms the 4th pole shoe with rubber seal;
Described packing ring (1) is arranged on the right side of rotating shaft boss, axle sleeve (13) is arranged on to the right side of packing ring (1), and jump ring (12) is arranged in the right groove of rotating shaft, makes axle sleeve (13) axially locating; 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), the 3rd pole shoe with rubber seal, the 3rd permanent magnet (8), sequentially pack in shell (2) endoporus with the 4th pole shoe of rubber seal; By screw (11), with being threaded on shell (2) end face, back-up ring (11) and shell (2) are fixed, made each part axial location of enclosure; 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), the 3rd pole shoe with rubber seal, the 3rd permanent magnet (8), with the 4th pole shoe, the back-up ring (11) of rubber seal, be inserted in rotating shaft together with shell (2), by being threaded shell 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:
Shell (2) is processed with 3 through holes;
The first permanent magnet (4), the second permanent magnet (6) and the 3rd permanent magnet (8) have a through hole;
The PATENT left side via of shell (2) is connected with the through hole of the first permanent magnet (4), forms the first air vent (22), at the first air vent, the first pneumatic control valve (21) is installed;
The intermediate throughholes of shell (2) is connected with the through hole of the second permanent magnet (6), forms the second air vent (19), at the second air vent, the second pneumatic control valve (18) is installed;
The right side through hole of shell (2) is connected with the through hole of the 3rd permanent magnet (8), forms the 3rd air vent (15), at the 3rd air vent, the 3rd pneumatic control valve (16) is installed.
2. gas-filled type magnetic liquid rotating sealing device according to claim 1, is characterized in that:
The first permanent magnet (4) left end polarity is N(S) utmost point, right-hand member polarity is S(N) utmost point, and the second permanent magnet (6) left end polarity is S(N) utmost point, right-hand member polarity is N(S), the 3rd permanent magnet (8) left end polarity is N(S) utmost point, right-hand member polarity is S(N) utmost point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310556884.4A CN103557335B (en) | 2013-11-11 | 2013-11-11 | Gas-filled type magnetic liquid rotating sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310556884.4A CN103557335B (en) | 2013-11-11 | 2013-11-11 | Gas-filled type magnetic liquid rotating sealing device |
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| Publication Number | Publication Date |
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| CN103557335A true CN103557335A (en) | 2014-02-05 |
| CN103557335B CN103557335B (en) | 2015-12-02 |
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| CN201310556884.4A Expired - Fee Related CN103557335B (en) | 2013-11-11 | 2013-11-11 | Gas-filled type magnetic liquid rotating sealing device |
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Cited By (15)
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| CN104405886A (en) * | 2014-11-26 | 2015-03-11 | 北京交通大学 | Method for improving pressure resistance of magnetic liquid seal in low-temperature working environment |
| CN104948743A (en) * | 2015-06-16 | 2015-09-30 | 北京交通大学 | Novel multi-stage magnetic liquid sealing device |
| CN105387217A (en) * | 2015-12-07 | 2016-03-09 | 北京交通大学 | Zero-leakage magnetic liquid sealing plunger type valve |
| CN105952796A (en) * | 2016-06-30 | 2016-09-21 | 天津荣亨集团股份有限公司 | Magnetofluid suspension bearing with uniformly distributed magnetofluid |
| CN106090237A (en) * | 2016-08-15 | 2016-11-09 | 广西科技大学 | A kind of buffer-type device for sealing magnetic fluid |
| CN106523713A (en) * | 2016-12-29 | 2017-03-22 | 北京交通大学 | Magnetic liquid injection method for magnetic liquid sealing device |
| CN106545658A (en) * | 2016-12-29 | 2017-03-29 | 北京交通大学 | Magnetic fluid seal device magnetic liquid teeth groove injection method |
| CN107076309A (en) * | 2014-10-24 | 2017-08-18 | 公益财团法人铁道综合技术研究所 | Magnetic fluid seal structure is used in rotation at a high speed |
| WO2018153059A1 (en) * | 2017-02-24 | 2018-08-30 | 自贡兆强密封制品实业有限公司 | Magnetic liquid sealing apparatus for chemical reactor and control system therefor |
| CN109027252A (en) * | 2018-09-03 | 2018-12-18 | 广西科技大学 | A kind of dichotomous device for sealing magnetic fluid |
| CN110529601A (en) * | 2019-09-12 | 2019-12-03 | 马江杰 | Combination packaging type dynamic sealing based on magnetic fluid |
| CN111577649A (en) * | 2020-05-11 | 2020-08-25 | 山东省章丘鼓风机股份有限公司 | Magnetic fluid sealing device for slurry pump |
| CN112303241A (en) * | 2020-10-29 | 2021-02-02 | 上海宇航系统工程研究所 | Magnetic fluid sealing structure of space station steam compression distillation device |
| CN112483748A (en) * | 2020-11-17 | 2021-03-12 | 杭州慧翔电液技术开发有限公司 | Magnetic fluid sealing device capable of realizing multi-stage gas shunting |
| CN112728111A (en) * | 2021-01-18 | 2021-04-30 | 清华大学 | Magnetic liquid sealing device |
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Cited By (25)
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|---|---|---|---|---|
| CN107076309A (en) * | 2014-10-24 | 2017-08-18 | 公益财团法人铁道综合技术研究所 | Magnetic fluid seal structure is used in rotation at a high speed |
| US10113591B2 (en) | 2014-10-24 | 2018-10-30 | Railway Technical Research Institute | Magnetic fluid sealing structure for high-speed rotation |
| CN107076309B (en) * | 2014-10-24 | 2019-01-18 | 公益财团法人铁道综合技术研究所 | High speed rotation magnetic fluid seal structure |
| CN104405886A (en) * | 2014-11-26 | 2015-03-11 | 北京交通大学 | Method for improving pressure resistance of magnetic liquid seal in low-temperature working environment |
| CN104948743A (en) * | 2015-06-16 | 2015-09-30 | 北京交通大学 | Novel multi-stage magnetic liquid sealing device |
| CN105387217A (en) * | 2015-12-07 | 2016-03-09 | 北京交通大学 | Zero-leakage magnetic liquid sealing plunger type valve |
| CN105952796A (en) * | 2016-06-30 | 2016-09-21 | 天津荣亨集团股份有限公司 | Magnetofluid suspension bearing with uniformly distributed magnetofluid |
| CN106090237B (en) * | 2016-08-15 | 2018-03-27 | 广西科技大学 | A kind of buffer-type device for sealing magnetic fluid |
| CN106090237A (en) * | 2016-08-15 | 2016-11-09 | 广西科技大学 | A kind of buffer-type device for sealing magnetic fluid |
| CN106523713B (en) * | 2016-12-29 | 2018-01-02 | 北京交通大学 | A kind of magnetic liquid method for implanting of magnetic fluid seal device |
| CN106545658A (en) * | 2016-12-29 | 2017-03-29 | 北京交通大学 | Magnetic fluid seal device magnetic liquid teeth groove injection method |
| CN106523713A (en) * | 2016-12-29 | 2017-03-22 | 北京交通大学 | Magnetic liquid injection method for magnetic liquid sealing device |
| WO2018153059A1 (en) * | 2017-02-24 | 2018-08-30 | 自贡兆强密封制品实业有限公司 | Magnetic liquid sealing apparatus for chemical reactor and control system therefor |
| CN109027252A (en) * | 2018-09-03 | 2018-12-18 | 广西科技大学 | A kind of dichotomous device for sealing magnetic fluid |
| CN109027252B (en) * | 2018-09-03 | 2020-03-10 | 广西科技大学 | Forked magnetic fluid sealing device |
| CN110529601A (en) * | 2019-09-12 | 2019-12-03 | 马江杰 | Combination packaging type dynamic sealing based on magnetic fluid |
| CN111963685A (en) * | 2019-09-12 | 2020-11-20 | 杨春花 | Combined cartridge type dynamic seal based on magnetic fluid |
| CN111963684A (en) * | 2019-09-12 | 2020-11-20 | 杨春花 | Combined cartridge type dynamic seal based on magnetic fluid |
| CN111963684B (en) * | 2019-09-12 | 2022-04-19 | 江苏锡安达防爆股份有限公司 | Combined cartridge type dynamic seal based on magnetic fluid |
| CN111963685B (en) * | 2019-09-12 | 2022-05-06 | 格尔减速机(南通)有限公司 | Combined cartridge type dynamic seal based on magnetic fluid |
| CN111577649A (en) * | 2020-05-11 | 2020-08-25 | 山东省章丘鼓风机股份有限公司 | Magnetic fluid sealing device for slurry pump |
| CN112303241A (en) * | 2020-10-29 | 2021-02-02 | 上海宇航系统工程研究所 | Magnetic fluid sealing structure of space station steam compression distillation device |
| CN112483748A (en) * | 2020-11-17 | 2021-03-12 | 杭州慧翔电液技术开发有限公司 | Magnetic fluid sealing device capable of realizing multi-stage gas shunting |
| CN112483748B (en) * | 2020-11-17 | 2022-09-20 | 杭州慧翔电液技术开发有限公司 | Magnetic fluid sealing device capable of realizing multi-stage gas shunting |
| CN112728111A (en) * | 2021-01-18 | 2021-04-30 | 清华大学 | Magnetic liquid sealing device |
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