CN103133698B - Method of changing sealing clearances of split type magnetic liquid - Google Patents
Method of changing sealing clearances of split type magnetic liquid Download PDFInfo
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- CN103133698B CN103133698B CN201310049349.XA CN201310049349A CN103133698B CN 103133698 B CN103133698 B CN 103133698B CN 201310049349 A CN201310049349 A CN 201310049349A CN 103133698 B CN103133698 B CN 103133698B
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- pole shoe
- lower half
- upper half
- magnetic guiding
- half portion
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Abstract
A method of changing sealing clearances of a split type magnetic liquid relates to the mechanical engineering field and solves an increasing cost problem and a low efficiency problem which are caused by the fact that a traditional split type magnetic fluid sealing device needs to change pole shoe during an experiment, assembling and utilization. The method of changing sealing clearances of the split type magnetic liquid includes pasting and covering an upper portion of a first magnetic guiding ring, an upper portion of a second magnetic guiding ring, an upper portion of a third magnetic guiding ring, a lower portion of the first magnetic guiding ring, a lower portion of the second magnetic guiding ring and a lower portion of the third magnetic guiding ring on internal faces of an upper portion of a first pole shoe of the magnetic sealing device, an upper portion of a second pole shoe, an upper portion of a third pole shoe, a lower portion of the first pole shoe, a lower portion of the second pole shoe, a lower portion of the third pole shoe; forming the first magnetic guiding ring (3-1), the second magnetic guiding ring (3-2) and the third magnetic guiding ring (3-3) by connecting the upper portions of the first magnetic guiding ring, the second magnetic guiding ring and the third magnetic guiding ring and the lower portions of the first magnetic guiding ring, the second magnetic guiding ring and the third magnetic guiding ring. The method of changing sealing clearances of the split type magnetic liquid has the advantages of reducing the cost and improving the efficiency due to the facts that when the magnetic sealing device is in an experimental investigation, a plurality sets of pole shoes with different sealing clearance values are no more machined and when the magnetic sealing device is assembled and utilized, the sealing clearances are large, and the pole shoes are no more changed.
Description
Technical field
The present invention relates to a kind of method changing split magnetic fluid sealing gap, belong to sealing field of mechanical engineering.
Background technique
At present, for the magnetic fluid sealing that rotating shaft diameter is greater than 300mm, usual employing split magnetic fluid sealing, the Theoretical Design gap of split magnetic fluid sealing is usually bigger than normal, even if design load is suitable, after assembling, because pole shoe size is yielding greatly, gap also can become large, causes pole shoe not use; In process of the test, when research sealing voltage endurance capability and seal clearance relation, also need the value changing seal clearance, need the pole shoe preparing multiple different sealing gap; In use, pole shoe is easy to wearing and tearing, causes gap to become large, affects sealability, time serious, need more to renew pole shoe; And these reasons all need to adjust seal clearance.Overcoming the above problems is again change at present, causes cost increase, efficiency reduction.
Summary of the invention
Technical problem to be solved by this invention be overcome existing Split magnetic liquid sealing device test, assembling, use in need to change the problem that the cost that causes of pole shoe increases, efficiency reduces.
Technological scheme of the present invention:
Change the method in split magnetic fluid sealing gap, the method comprises:
The inner ring surface of upper half part of first, second and third pole shoe of step one and lower half portion of first, second and third pole shoe pastes first, second and third magnetic guiding loop coated respectively;
Open Side Down is linked in sequence for upper half part of upper half part of upper half part of first pole shoe, upper half part of the first permanent magnet, the second pole shoe, upper half part of the second permanent magnet, the 3rd pole shoe, forms upper half black box;
Lower half portion opening upwards of lower half portion of lower half portion of the first pole shoe, lower half portion of the first permanent magnet, the second pole shoe, lower half portion of the second permanent magnet, the 3rd pole shoe is linked in sequence, and forms lower half black box;
Step 2 is respectively upper, lower upper half part of the first pole shoe of half black box and the junction plane of lower half portion of the first pole shoe, the junction plane of upper half part of the second pole shoe and lower half portion of the second pole shoe, on the junction plane of upper half part of the 3rd pole shoe and lower half portion of the 3rd pole shoe, smear sealer, be buckled on hollow shaft, and connect upper half part of the first pole shoe and lower half portion of the first pole shoe with bolt and nut respectively, upper half part of second pole shoe and lower half portion of the second pole shoe, upper half part of 3rd pole shoe and lower half portion of the 3rd pole shoe, the inner headed face of the first to the 3rd pole shoe injects the first to the 3rd magnetic liquid respectively, form black box,
Upper half part of first pole shoe and lower half portion of the first pole shoe be connected to form the first pole shoe; Upper half part of second pole shoe and lower half portion of the second pole shoe be connected to form the second pole shoe; Upper half part of 3rd pole shoe and lower half portion of the 3rd pole shoe be connected to form the 3rd pole shoe; Upper half part of first, second and third magnetic guiding loop and lower half portion be connected to form first, second and third magnetic guiding loop.
Upper half part of first permanent magnet and lower half portion of the first permanent magnet form the first permanent magnet; Upper half part of second permanent magnet and lower half portion of the second permanent magnet form the second permanent magnet.
First rubber ring, the second rubber ring, the 3rd rubber ring are arranged on the first pole shoe, the second pole shoe 4-2 respectively), in groove on the 3rd pole shoe periphery.
Step 3 smears sealer on the junction plane of two half-shells, is buckled on described black box, with bolt and nut, two half-shells is connected to form shell;
Step 4 is threaded by screw and shell, is fixed on by end cap on shell, makes black box axial restraint.
The internal diameter of upper half part of first, second and third described magnetic guiding loop and lower half portion of first, second and third magnetic guiding loop is equal; The material of first, second and third magnetic guiding loop is permally, DT4, DT3,1Cr13 or 2Cr13; First, second and third magnetic guiding loop radial thickness is 0.1 ~ 1mm.
The beneficial effect that the present invention compared with prior art has is:
The present invention is by pasting first, second and third magnetic guiding loop of coated high magnetic permeability on the inner headed face by first, second and third pole shoe.Thus make Split magnetic liquid sealing device need not process the pole shoe of many cover different sealing gap widths in experimental study, make cost reduction, efficiency raising.In assembling, using process, when causing seal clearance excessive, without the need to changing pole shoe, also make cost reduction, efficiency raising.
Accompanying drawing explanation
Fig. 1 is Split magnetic liquid sealing device.
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: hollow shaft 1, shell 2, first magnetic guiding loop 3-1, the second magnetic guiding loop 3-2, the 3rd magnetic guiding loop 3-3, the first pole shoe 4-1, the second pole shoe 4-2, the 3rd pole shoe 4-3, the first permanent magnet 5-1, the second permanent magnet 5-2, the first magnetic liquid 6-1, the second magnetic liquid 6-2, the 3rd magnetic liquid 6-3, end cap 7, first rubber ring 8-1, the second rubber ring 8-2, the 3rd rubber ring 8-3.
Embodiment
The invention will be further described by reference to the accompanying drawings:
Change the method in split magnetic fluid sealing gap, the method comprises:
The inner ring surface of upper half part of first, second and third pole shoe of step one and lower half portion of first, second and third pole shoe pastes first, second and third magnetic guiding loop coated respectively;
Open Side Down is linked in sequence for upper half part of upper half part of upper half part of first pole shoe, upper half part of the first permanent magnet, the second pole shoe, upper half part of the second permanent magnet, the 3rd pole shoe, forms upper half black box;
Lower half portion opening upwards of lower half portion of lower half portion of the first pole shoe, lower half portion of the first permanent magnet, the second pole shoe, lower half portion of the second permanent magnet, the 3rd pole shoe is linked in sequence, and forms lower half black box;
Step 2 is respectively upper, lower upper half part of the first pole shoe of half black box and the junction plane of lower half portion of the first pole shoe, the junction plane of upper half part of the second pole shoe and lower half portion of the second pole shoe, on the junction plane of upper half part of the 3rd pole shoe and lower half portion of the 3rd pole shoe, smear sealer, be buckled on hollow shaft 1, and connect upper half part of the first pole shoe and lower half portion of the first pole shoe with bolt and nut respectively, upper half part of second pole shoe and lower half portion of the second pole shoe, upper half part of 3rd pole shoe and lower half portion of the 3rd pole shoe, at the first to the 3rd pole shoe 4-1, 4-2, the inner headed face of 4-3 injects respectively the first to the 3rd magnetic liquid 6-1, 6-2, 6-3, form black box,
Upper half part of first pole shoe and lower half portion of the first pole shoe be connected to form the first pole shoe 4-1; Upper half part of second pole shoe and lower half portion of the second pole shoe be connected to form the second pole shoe 4-2; Upper half part of 3rd pole shoe and lower half portion of the 3rd pole shoe be connected to form the 3rd pole shoe 4-3; Upper half part of first, second and third magnetic guiding loop and lower half portion be connected to form first, second and third magnetic guiding loop 3-1,3-2,3-3.
Upper half part of first permanent magnet and lower half portion of the first permanent magnet form the first permanent magnet 5-1; Upper half part of second permanent magnet and lower half portion of the second permanent magnet form the second permanent magnet 5-2.
First rubber ring 8-1, the second rubber ring 8-2, the 3rd rubber ring 8-3 are arranged in the groove on the first pole shoe 4-1, the second pole shoe 4-2, the 3rd pole shoe 4-3 periphery respectively.
Step 3 smears sealer on the junction plane of two half-shells, is buckled on described black box, with bolt and nut, two half-shells is connected to form shell 2;
Step 4 is threaded by screw and shell 2, is fixed on shell, makes black box axial restraint by end cap 7.
The internal diameter of upper half part of first, second and third described magnetic guiding loop and lower half portion of first, second and third magnetic guiding loop is equal; The material of first, second and third magnetic guiding loop 3-1,3-2,3-3 is permally or electrical pure iron DT4, DT3 or magnetic stainless steel 1Cr13,2Cr13; First, second and third magnetic guiding loop radial thickness is 0.1 ~ 1mm, gets its end value or the arbitrary value in the middle of it.
The material of described shell 2 is non-magnetic stainless steel.Described first to the 3rd magnetic liquid is ester group magnetic liquid or Polydimethylsiloxane--based Ferrofluids.The material of first and second described permanent magnet is NdFeB material.The material of the described first to the 3rd pole shoe is 2cr13 stainless steel.
Claims (2)
1. change the method in split magnetic fluid sealing gap, the method comprises:
Open Side Down is linked in sequence for upper half part of upper half part of upper half part of step one first pole shoe, upper half part of the first permanent magnet, the second pole shoe, upper half part of the second permanent magnet, the 3rd pole shoe, forms upper half black box;
Lower half portion opening upwards of lower half portion of lower half portion of the first pole shoe, lower half portion of the first permanent magnet, the second pole shoe, lower half portion of the second permanent magnet, the 3rd pole shoe is linked in sequence, and forms lower half black box;
Step 2 is respectively upper, lower upper half part of the first pole shoe of half black box and the junction plane of lower half portion of the first pole shoe, the junction plane of upper half part of the second pole shoe and lower half portion of the second pole shoe, on the junction plane of upper half part of the 3rd pole shoe and lower half portion of the 3rd pole shoe, smear sealer, be buckled on hollow shaft (1), and connect upper half part of the first pole shoe and lower half portion of the first pole shoe with bolt and nut respectively, upper half part of second pole shoe and lower half portion of the second pole shoe, upper half part of 3rd pole shoe and lower half portion of the 3rd pole shoe, at the first to the 3rd pole shoe (4-1, 4-2, inner headed face 4-3) injects respectively the first to the 3rd magnetic liquid (6-1, 6-2, 6-3), form black box,
Upper half part of first pole shoe and lower half portion of the first pole shoe be connected to form the first pole shoe (4-1); Upper half part of second pole shoe and lower half portion of the second pole shoe be connected to form the second pole shoe (4-2); Upper half part of 3rd pole shoe and lower half portion of the 3rd pole shoe be connected to form the 3rd pole shoe (4-3);
Upper half part of first permanent magnet and lower half portion of the first permanent magnet form the first permanent magnet (5-1); Upper half part of second permanent magnet and lower half portion of the second permanent magnet form the second permanent magnet (5-2);
First rubber ring (8-1), the second rubber ring (8-2), the 3rd rubber ring (8-3) are arranged in the groove on the first pole shoe (4-1), the second pole shoe (4-2), the 3rd pole shoe (4-3) periphery respectively;
Step 3 smears sealer on the junction plane of two half-shells, is buckled on described black box, with bolt and nut, two half-shells is connected to form shell (2);
Step 4 is threaded by screw and shell (2), is fixed on shell, makes black box axial restraint by end cap (7);
It is characterized in that:
The inner ring surface of upper half part of first, second and third described pole shoe and lower half portion of first, second and third pole shoe is pasted respectively upper half part and lower half portion of first, second and third magnetic guiding loop coated; Upper half part of first, second and third magnetic guiding loop and lower half portion be connected to form first, second and third magnetic guiding loop (3-1,3-2,3-3).
2. a kind of method changing split magnetic fluid sealing gap according to claim 1, is characterized in that:
The internal diameter of upper half part of first, second and third described magnetic guiding loop and lower half portion of first, second and third magnetic guiding loop is equal; The material of first, second and third magnetic guiding loop (3-1,3-2,3-3) is permally, DT4, DT3,1Cr13 or 2Cr13;
First, second and third magnetic guiding loop radial thickness is 0.1 ~ 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310049349.XA CN103133698B (en) | 2013-02-07 | 2013-02-07 | Method of changing sealing clearances of split type magnetic liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310049349.XA CN103133698B (en) | 2013-02-07 | 2013-02-07 | Method of changing sealing clearances of split type magnetic liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103133698A CN103133698A (en) | 2013-06-05 |
| CN103133698B true CN103133698B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310049349.XA Expired - Fee Related CN103133698B (en) | 2013-02-07 | 2013-02-07 | Method of changing sealing clearances of split type magnetic liquid |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474196B (en) * | 2013-08-28 | 2016-09-28 | 昆山佑翔电子科技有限公司 | Combination magnet ring |
| CN106907486B (en) * | 2017-03-09 | 2019-02-19 | 石家庄铁道大学 | The controllable compound sealing device and encapsulating method of sealing are driven for tunneling owner |
| CN113757386A (en) * | 2021-09-07 | 2021-12-07 | 北京交通大学 | Magnetic fluid sealing device using cylindrical magnets arranged in radial and circumferential direction as magnetic source |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5593164A (en) * | 1992-10-08 | 1997-01-14 | Ferrofluidics Corporation | Ferrofluidic seal centering ring |
| CN102425672A (en) * | 2011-08-19 | 2012-04-25 | 北京交通大学 | Split magnetic liquid sealing device |
| CN102537366A (en) * | 2012-01-05 | 2012-07-04 | 北京交通大学 | Sealing method for split type magnetic liquid sealing device |
| CN102537367A (en) * | 2012-01-12 | 2012-07-04 | 北京理工大学 | Shaft sealing device with magnetic fluids |
| CN102720841A (en) * | 2011-12-20 | 2012-10-10 | 北京交通大学 | Large-diameter magnetic liquid rotating seal assembly method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05196149A (en) * | 1992-01-21 | 1993-08-06 | Tokyo Electron Ltd | Magnetic fluid seal device |
| JPH07174239A (en) * | 1993-12-21 | 1995-07-11 | Seiko Seiki Co Ltd | Seal structure |
-
2013
- 2013-02-07 CN CN201310049349.XA patent/CN103133698B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5593164A (en) * | 1992-10-08 | 1997-01-14 | Ferrofluidics Corporation | Ferrofluidic seal centering ring |
| CN102425672A (en) * | 2011-08-19 | 2012-04-25 | 北京交通大学 | Split magnetic liquid sealing device |
| CN102720841A (en) * | 2011-12-20 | 2012-10-10 | 北京交通大学 | Large-diameter magnetic liquid rotating seal assembly method |
| CN102537366A (en) * | 2012-01-05 | 2012-07-04 | 北京交通大学 | Sealing method for split type magnetic liquid sealing device |
| CN102537367A (en) * | 2012-01-12 | 2012-07-04 | 北京理工大学 | Shaft sealing device with magnetic fluids |
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| CN103133698A (en) | 2013-06-05 |
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Granted publication date: 20150415 Termination date: 20200207 |