CN103557335B - Gas-filled type magnetic liquid rotating sealing device - Google Patents
Gas-filled type magnetic liquid rotating sealing device Download PDFInfo
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- CN103557335B CN103557335B CN201310556884.4A CN201310556884A CN103557335B CN 103557335 B CN103557335 B CN 103557335B CN 201310556884 A CN201310556884 A CN 201310556884A CN 103557335 B CN103557335 B CN 103557335B
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- permanent magnet
- rubber seal
- pole shoe
- shell
- axle sleeve
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Abstract
Gas-filled type magnetic liquid rotating sealing device, belongs to sealing field of mechanical engineering.Solve existing magnetic fluid seal device at complex working condition lower seal high-risk gas, during as hydrogen, the security hidden trouble caused by Leakage Gas.This device comprises the parts such as shell, pole shoe, rubber seal, magnetic liquid, permanent magnet, axle sleeve, back-up ring, packing ring, pneumatic control valve.Described magnetic fluid seal device is vacuumized by the cavity between the first permanent magnet internal diameter and axle sleeve external diameter, and the cavity between the second permanent magnet internal diameter and axle sleeve external diameter is filled with CO
2or inert gas, the cavity between the 3rd permanent magnet internal diameter and axle sleeve external diameter vacuumizes, and hazardous gas, especially explosive gas directly can not be contacted with air, solve security hidden trouble.
Description
Technical field
The invention belongs to sealing field of mechanical engineering.
Background technique
Magnetic fluid sealing technology due to its have zero leakage, without wearing and tearing, the life-span is long, advantages of simple structure and simple gradually use by increasing industry.Existing magnetic liquid rotating sealing device typical structure is if publication number is for CN102518811A and publication number are for as described in the patent application of CN202091519U.Existing magnetic liquid rotating sealing device at sealing high-risk gas, during as hydrogen, because magnetic fluid sealing has certain leakage rate to make hydrogen and air easily form explosive gas, 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 to make hydrogen and air easily form explosive gas, there is 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 vent, the 3rd pneumatic control valve, the 3rd rubber seal, the second pneumatic control valve, the second air vent, the second rubber seal, the first pneumatic control valve, the first air vent, the first rubber seal, rubber seal;
Connection between each several part forming this device:
The first described rubber seal is arranged in the groove on the first pole shoe cylindrical, form the first pole shoe of band rubber seal, second rubber seal is arranged in the groove on the second pole shoe cylindrical, form the second pole shoe of band rubber seal, 3rd rubber seal is arranged in the groove on the 3rd pole shoe cylindrical, form the 3rd pole shoe of band rubber seal, the 4th rubber seal is arranged in the groove on the 4th pole shoe cylindrical, forms the 4th pole shoe of band rubber seal;
Described packing ring is arranged on the right side of rotating shaft boss, axle sleeve is arranged on the right side of packing ring, is arranged on by jump ring in the right groove of rotating shaft, makes axle sleeve axially locating; 4th pole shoe order of the 3rd pole shoe of the second pole shoe of the first pole shoe of band rubber seal, the first permanent magnet, band rubber seal, the second permanent magnet, band rubber seal, the 3rd permanent magnet, band rubber seal is loaded in shell endoporus; With being threaded on shell end face back-up ring and shell fixed by screw, make each part axial location of enclosure; Band the first pole shoe of rubber seal, the first permanent magnet, the second pole shoe of band rubber seal, the second permanent magnet, the 3rd pole shoe of band rubber seal, the 3rd permanent magnet, the 4th pole shoe of band rubber seal, back-up ring are inserted in rotating shaft together with shell, by housing flange dish is threaded shell axially locating; In an assembling process, after permanent magnet is installed, in the endoporus of permanent magnet, magnetic liquid is injected;
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 according to concrete operating mode, extract out or insufflation gas in cavity between the first permanent magnet and axle sleeve, as carbon dioxide, nitrogen and inert gas, the force value required for adjustment;
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 according to concrete operating mode, extract out or insufflation gas in cavity between the second permanent magnet and axle sleeve, as carbon dioxide, nitrogen and inert gas, the force value required for adjustment;
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 according to concrete operating mode, extract out or insufflation gas in cavity between permanent magnet and axle sleeve the 3rd, as carbon dioxide, nitrogen and inert gas, the force value required for adjustment;
First permanent magnet left end polarity is N pole, and right-hand member polarity is S pole, and the second permanent magnet left end polarity is S pole, and right-hand member polarity is N, and the 3rd permanent magnet left end polarity is N pole, and right-hand member polarity is S pole.
The present invention compares had beneficial effect with prior art:
Vacuumized by the cavity between the first permanent magnet internal diameter and axle sleeve external diameter, 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 directly can not be 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), first pole shoe (3), first permanent magnet (4), second pole shoe (5), second permanent magnet (6), 3rd pole shoe (7), 3rd permanent magnet (8), 4th pole shoe (9), screw (10), back-up ring (11), jump ring (12), axle sleeve (13), 4th rubber seal (14), 3rd air vent (15), 3rd pneumatic control valve (16), 3rd rubber seal (17), second pneumatic control valve (18), second air vent (19), second rubber seal (20), first pneumatic control valve (21), first air vent (22), first rubber seal (23), rubber seal (24).
Embodiment
Be that the invention will be further described for embodiment with accompanying drawing:
Gas-filled type magnetic liquid rotating sealing device, as Fig. 1, sealing device comprises: packing ring 1, shell 2, first pole shoe 3, first permanent magnet 4, second pole shoe 5, second permanent magnet 6, 3rd pole shoe 7, 3rd permanent magnet 8, 4th pole shoe 9, screw 10, back-up ring 11, jump ring 12, axle sleeve 13, 4th rubber seal 14, 3rd air vent 15, 3rd pneumatic control valve 16, 3rd rubber seal 17, second pneumatic control valve 18, second air vent 19, second rubber seal 20, first pneumatic control valve 21, first air vent 22, first rubber seal 23, rubber seal 24.
Connection between each several part forming this device:
The first described rubber seal 23 is arranged in the groove on the first pole shoe 3 cylindrical, form the first pole shoe of band rubber seal, second rubber seal 20 is arranged in the groove on the second pole shoe 5 cylindrical, form the second pole shoe of band rubber seal, 3rd rubber seal 17 is arranged in the groove on the 3rd pole shoe 7 cylindrical, form the 3rd pole shoe of band rubber seal, the 4th rubber seal 14 is arranged in the groove on the 4th pole shoe 9 cylindrical, forms the 4th pole shoe of band rubber seal;
Described packing ring 1 is arranged on the right side of rotating shaft boss, axle sleeve 13 is arranged on the right side of packing ring 1, is arranged in the right groove of rotating shaft by jump ring 12, makes axle sleeve 13 axially locating; 4th pole shoe order of the 3rd pole shoe of the second pole shoe of the first pole shoe of band rubber seal, the first permanent magnet 4, band rubber seal, the second permanent magnet 6, band rubber seal, the 3rd permanent magnet 8, band rubber seal is loaded in shell 2 endoporus; With being threaded on shell 2 end face back-up ring 11 and shell 2 fixed by screw 10, make each part axial location of enclosure; Band the first pole shoe of rubber seal, the first permanent magnet 4, the second pole shoe of band rubber seal, the second permanent magnet 6, the 3rd pole shoe of band rubber seal, the 3rd permanent magnet 8, the 4th pole shoe of band rubber seal, back-up ring 11 are inserted in rotating shaft together with shell 2, by shell 2 flange plate is threaded shell axially locating; In an assembling process, after permanent magnet is installed, in the endoporus of permanent magnet, magnetic liquid is injected;
Shell 2 is connected with the through hole of the first permanent magnet 4, form the first air vent 22, at the first air vent 22, first pneumatic control valve 21 is installed, can according to concrete operating mode, the first permanent magnet 4 to extract out in cavity between axle sleeve 13 or be filled with corresponding gas, as carbon dioxide, nitrogen and inert gas, the force value required for adjustment;
Shell 2 is connected with the through hole of the second permanent magnet 6, form the second air vent 19, at the second air vent 19, second pneumatic control valve 18 is installed, can according to concrete operating mode, the second permanent magnet 6 to extract out in cavity between axle sleeve 13 or be filled with corresponding gas, as carbon dioxide, nitrogen and inert gas, the force value required for adjustment;
Shell 2 is connected with the through hole of the 3rd permanent magnet 8, form the 3rd air vent 15, at the 3rd air vent 15, the 3rd pneumatic control valve 16 is installed, can according to concrete operating mode, the 3rd permanent magnet 8 to extract out in cavity between axle sleeve 13 or be filled with corresponding gas, as carbon dioxide, nitrogen and inert gas, the force value required for adjustment;
First permanent magnet 4 left end polarity is N pole, and right-hand member polarity is S pole, and the second permanent magnet 6 left end polarity is S pole, and right-hand member polarity is N, and the 3rd permanent magnet 8 left end polarity is N pole, and right-hand member polarity is S pole.
Housing 2, packing ring 1, back-up ring 11 and jump ring 12 all select non-permeable material, as stainless steel or aluminium product;
The material that first pole shoe 3, second pole shoe 5, the 3rd pole shoe 7, the 4th pole shoe 9 and axle sleeve 13 select magnetic property good, as electrical pure iron;
First permanent magnet 4, second permanent magnet 6, the 3rd permanent magnet 8 all select rubidium iron boron;
The kind of magnetic liquid is according to the magnetic liquid of the different base fluid of the different choice of sealing gas.
Claims (2)
1. gas-filled type magnetic liquid rotating sealing device, this device comprises:
Packing ring (1), shell (2), first pole shoe (3), first permanent magnet (4), second pole shoe (5), second permanent magnet (6), 3rd pole shoe (7), 3rd permanent magnet (8), 4th pole shoe (9), screw (10), back-up ring (11), jump ring (12), axle sleeve (13), 4th rubber seal (14), 3rd air vent (15), 3rd pneumatic control valve (16), 3rd rubber seal (17), second pneumatic control valve (18), second air vent (19), second rubber seal (20), first pneumatic control valve (21), first air vent (22), first rubber seal (23), rubber seal (24),
Connection between each several part forming this device:
Described the first rubber seal (23) is arranged in the groove on the first pole shoe (3) cylindrical, form the first pole shoe of band rubber seal, second rubber seal (20) is arranged in the groove on the second pole shoe (5) cylindrical, form the second pole shoe of band rubber seal, 3rd rubber seal (17) is arranged in the groove on the 3rd pole shoe (7) cylindrical, form the 3rd pole shoe of band rubber seal, 4th rubber seal (14) is arranged in the groove on the 4th pole shoe (9) cylindrical, form the 4th pole shoe of band rubber seal,
Described packing ring (1) is arranged on the right side of rotating shaft boss, axle sleeve (13) is arranged on 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; 4th pole shoe order of the 3rd pole shoe of the second pole shoe of the first pole shoe of band rubber seal, the first permanent magnet (4), band rubber seal, the second permanent magnet (6), band rubber seal, the 3rd permanent magnet (8), band rubber seal is loaded in shell (2) endoporus; By screw (10) and being threaded fixing to back-up ring (11) and shell (2) on shell (2) end face, make each part axial location of enclosure; Band the first pole shoe of rubber seal, the first permanent magnet (4), the second pole shoe of band rubber seal, the second permanent magnet (6), the 3rd pole shoe of band rubber seal, the 3rd permanent magnet (8), the 4th pole shoe of band rubber seal, back-up ring (11) are inserted in rotating shaft together with shell (2), by shell (2) flange plate is threaded shell axially locating; In an assembling process, after permanent magnet is installed, in the endoporus of permanent magnet, magnetic liquid is injected;
It is characterized in that:
Shell (2) is processed with 3 through holes;
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), is provided with the first pneumatic control valve (21) at the first air vent (22);
The intermediate throughholes of shell (2) is connected with the through hole of the second permanent magnet (6), forms the second air vent (19), is provided with the second pneumatic control valve (18) at the second air vent (19);
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), is provided with the 3rd pneumatic control valve (16) at the 3rd air vent (15);
Vacuumized by the cavity between the internal diameter and the external diameter of axle sleeve (13) of the first permanent magnet (4), cavity between the internal diameter and the external diameter of axle sleeve (13) of the second permanent magnet (6) is filled with inert gas, cavity between the internal diameter and axle sleeve external diameter of the 3rd permanent magnet (8) vacuumizes, and hazardous gas directly can not be contacted with air.
2. gas-filled type magnetic liquid rotating sealing device according to claim 1, is characterized in that:
First permanent magnet (4) left end polarity is N pole, and right-hand member polarity is S pole, and the second permanent magnet (6) left end polarity is S pole, and right-hand member polarity is N, and the 3rd permanent magnet (8) left end polarity is N pole, and right-hand member polarity is S pole.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103557335A CN103557335A (en) | 2014-02-05 |
| CN103557335B true CN103557335B (en) | 2015-12-02 |
Family
ID=50011658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310556884.4A Expired - Fee Related CN103557335B (en) | 2013-11-11 | 2013-11-11 | Gas-filled type magnetic liquid rotating sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103557335B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321854A (en) * | 2016-10-21 | 2017-01-11 | 北京交通大学 | Magnetic liquid sealing device with radial isodirectional magnetization of permanent magnets |
| CN106545658A (en) * | 2016-12-29 | 2017-03-29 | 北京交通大学 | Magnetic fluid seal device magnetic liquid teeth groove injection method |
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| JP6505742B2 (en) * | 2014-10-24 | 2019-04-24 | 公益財団法人鉄道総合技術研究所 | Magnetic fluid seal structure for high speed rotation |
| 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 |
| CN104948743B (en) * | 2015-06-16 | 2017-06-30 | 北京交通大学 | A kind of multistage magnetic fluid seal device |
| CN105387217A (en) * | 2015-12-07 | 2016-03-09 | 北京交通大学 | Zero-leakage magnetic liquid sealing plunger type valve |
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| EP0259067A2 (en) * | 1986-08-22 | 1988-03-09 | Ferrofluidics Corporation | High temperature ferrofluid multiple stage seal and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106321854B (en) * | 2016-10-21 | 2018-02-16 | 北京交通大学 | The magnetic fluid seal device that permanent magnet radially magnetizes in the same direction |
| CN106545658A (en) * | 2016-12-29 | 2017-03-29 | 北京交通大学 | Magnetic fluid seal device magnetic liquid teeth groove injection method |
| CN106545658B (en) * | 2016-12-29 | 2018-01-02 | 北京交通大学 | Magnetic fluid seal device magnetic liquid teeth groove injection method |
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