CN103234049B - Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span - Google Patents
Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span Download PDFInfo
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- CN103234049B CN103234049B CN201310127580.6A CN201310127580A CN103234049B CN 103234049 B CN103234049 B CN 103234049B CN 201310127580 A CN201310127580 A CN 201310127580A CN 103234049 B CN103234049 B CN 103234049B
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- pole shoe
- lower half
- upper half
- half part
- half portion
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Abstract
Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span, belong to sealing field of mechanical engineering.The method is that coordinating between first, second and third pole shoe (5-1,5-2,5-3) with shell (2) is processed as Spielpassung; The left side of the first pole shoe and the right side of the 3rd pole shoe establish the first support ring (3-1) and the second support ring (3-2) respectively; Cooperation between first, second support ring and shell is processed as interference fit; Adjust black box in assembling, make the junction plane of half black box and lower half black box, in same level, finally, by being threaded of screw and shell, end cap (6) being fixed on shell, making black box axial restraint.Produce the changing of the relative positions and the not tight problem of laminating between the end face overcoming existing split pole shoe, improve sealing reliability and the sealing life of Split magnetic liquid sealing device, this method is simple, is easy to realize.<!--1-->
Description
Technical field
The present invention relates to and a kind ofly improve the sealing reliability of Split magnetic liquid sealing device and the method for sealing life, belong to sealing field of mechanical engineering.
Background technique
At present when installing wide arc gap Split magnetic liquid sealing device, coordinating between split pole shoe with split shell is transition fit.Although this fit system can ensure that split shell fixes black box, but produce the changing of the relative positions and the not tight problem of laminating between the end face that also there is split pole shoe, this will make to form leakage way between pole shoe mating face, cause magnetic fluid sealing voltage endurance capability to reduce, the life and reliability of sealing also decreases.
Summary of the invention
Technical problem to be solved by this invention overcomes in existing split magnetic fluid sealing the tightly deficiency of the sealability caused and reliability decrease of fitting between split pole shoe mating face, provides and improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span.
Technological scheme of the present invention:
Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span, the method comprises:
The opening of upper half part of upper half part of upper half part first permanent magnet of step one first support ring upper half part, the first pole shoe, upper half part of the second pole shoe, the second permanent magnet, upper half part of the 3rd pole shoe, upper half part of the second support ring is linked in sequence all downwards, forms upper half black box;
The equal upstream sequence of opening of lower half portion of lower half portion of lower half portion of the first support ring, lower half portion of the first pole shoe, the first permanent magnet, lower half portion of the second pole shoe, the second permanent magnet, lower half portion of the 3rd pole shoe, lower half portion of the second support ring connects, and forms lower half black box;
Step 2 is respectively upper, lower upper half part of the first support ring of half black box and the junction plane of lower half portion of the first support ring, the junction plane of lower half portion of first pole shoe upper half part and 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, the junction plane of upper half part of the 3rd pole shoe and lower half portion of the 3rd pole shoe, on the junction plane of upper half part of the second support ring and lower half portion of the second support ring, smear sealer, be buckled in rotating 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 support ring and lower half portion of the first support ring be connected to form the first support ring, upper half part of the 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 second support ring and lower half portion of the second support ring be connected to form the second support ring;
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 in the groove on the first pole shoe, the second pole shoe, the 3rd pole shoe periphery respectively;
Adjustment black box, makes the junction plane of half black box and lower half black box, in same level;
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;
Coordinating between first, second and third pole shoe with shell is Spielpassung;
Cooperation between first, second support ring and shell is interference fit;
Step 4 is threaded by screw and shell, is fixed on by end cap on shell, makes black box axial restraint;
The difference Lg of the exradius of first, second and third described pole shoe and the internal bore radius of shell is 0.01 ~ 0.03mm;
The exradius of first, second described support ring and the difference of internal diameter of outer cover are 0.01 ~ 0.03mm.
The beneficial effect that the present invention compared with prior art has is:
The first support ring and the second support ring are established in the right side of the left side of the first pole shoe and the 3rd pole shoe by the present invention respectively, cooperation between first, second support ring and shell is processed as interference fit, coordinating between first, second and third pole shoe with shell is processed as Spielpassung, thus the pressure acted on pole shoe is transferred on support ring when making mounting casing, produce the changing of the relative positions and the not tight problem of laminating between the end face overcoming split pole shoe, improve reliability and the working life of split magnetic fluid sealing.
Accompanying drawing explanation
Fig. 1 is Split magnetic liquid sealing device.
Fig. 2 is the partial enlarged drawing at Figure 1B place.
Fig. 3 is the A-A sectional view of Fig. 1.
In figure: rotating shaft 1, shell 2, first support ring 3-1, the second support ring 3-2, the first magnetic liquid 4-1, the second magnetic liquid 4-2, the 3rd magnetic liquid 4-3, the first pole shoe 5-1, the second pole shoe 5-2, the 3rd pole shoe 5-3, the first permanent magnet 6-1, the second permanent magnet 6-2, 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:
Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span, the method comprises:
Upper half part of upper half part of step one first support ring upper half part, the first pole shoe, upper half part of the first pole shoe, the first permanent magnet, upper half part of the second pole shoe, upper half part of the second permanent magnet, upper half part of the 3rd pole shoe, upper half part opening of the second support ring are linked in sequence all downwards, form upper half black box;
The equal upstream sequence of lower half portion opening of lower half portion of lower half portion of lower half portion of the first support ring, lower half portion of the first pole shoe, the first permanent magnet, lower half portion of the second pole shoe, the second permanent magnet, lower half portion of the 3rd pole shoe, the second support ring connects, and forms lower half black box;
Step 2 is respectively upper, lower upper half part of the first support ring of half black box and the junction plane of lower half portion of the first support ring, on, 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, the junction plane of upper half part of the 3rd pole shoe and lower half portion of the 3rd pole shoe, on the junction plane of upper half part of the second support ring and lower half portion of the second support ring, smear sealer, be buckled in rotating 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 5-1, 5-2, the inner headed face of 5-3 injects respectively the first to the 3rd magnetic liquid 4-1, 4-2, 4-3, form black box,
Upper half part of first support ring and lower half portion of the first support ring be connected to form the first support ring 3-1; Upper half part of second support ring and lower half portion of the second support ring be connected to form the second support ring 3-2;
Upper half part of first pole shoe and lower half portion of the first pole shoe be connected to form the first pole shoe 5-1; Upper half part of second pole shoe and lower half portion of the second pole shoe be connected to form the second pole shoe 5-2;
Upper half part of 3rd pole shoe and lower half portion of the 3rd pole shoe be connected to form the 3rd pole shoe 5-3;
Upper half part of first permanent magnet and lower half portion of the first permanent magnet form the first permanent magnet 6-1; Upper half part of second permanent magnet and lower half portion of the second permanent magnet form the second permanent magnet 6-2;
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 5-1, the second pole shoe 5-2, the 3rd pole shoe 5-3 periphery respectively;
Adjustment black box, makes the junction plane of half black box and lower half black box, in same level.
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;
Coordinating between first, second and third pole shoe with shell 2 is Spielpassung, and the cooperation between first, second support ring and shell 2 is interference fit, as shown in Figure 2.
The difference Lg of the exradius of first, second and third described pole shoe and the internal bore radius of shell 2 is 0.01 ~ 0.03mm, and the span of the difference of the exradius of first, second and third pole shoe and the internal bore radius of shell 2 gets its end value or the arbitrary value in the middle of it;
The exradius of first, second described support ring and the difference of internal diameter of outer cover are 0.01 ~ 0.03mm, and the span of the exradius of first, second support ring and the difference of internal diameter of outer cover gets its end value or the arbitrary value in the middle of it.
The material of described rotating shaft 1 is 2cr13 stainless steel.The material of described shell 2 is non-magnetic stainless steel.The material of first, second described support ring is non-magnetic stainless steel material.Described magnetic liquid is machine oil based magnetic liquid, 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 (3)
1. improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span, the method comprises:
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 is linked in sequence and opening is all downward, forms upper half black box;
Lower half portion of lower half portion of lower half portion of 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 be linked in sequence and opening all upwards, form 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 in rotating 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 (5-1, 5-2, inner headed face 5-3) injects respectively the first to the 3rd magnetic liquid (4-1, 4-2, 4-3), 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 (5-1); Upper half part of second pole shoe and lower half portion of the second pole shoe be connected to form the second pole shoe (5-2); Upper half part of 3rd pole shoe and lower half portion of the 3rd pole shoe be connected to form the 3rd pole shoe (5-3);
Upper half part of first permanent magnet and lower half portion of the first permanent magnet form the first permanent magnet (6-1); Upper half part of second permanent magnet and lower half portion of the second permanent magnet form the second permanent magnet (6-2);
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 (5-1), the second pole shoe (5-2), the 3rd pole shoe (5-3) periphery respectively;
Adjustment black box, makes the junction plane of half black box and lower half black box, in same level;
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:
Coordinating between first, second and third described pole shoe with shell (2) is Spielpassung;
The left side of described the first pole shoe (5-1) and the right side (5-3) of the 3rd pole shoe establish the first support ring and the second support ring respectively; Cooperation between first, second support ring and shell is interference fit.
2. the sealing reliability of raising Split magnetic liquid sealing device according to claim 1 and the method in life-span, is characterized in that:
The difference Lg of the internal bore radius of the exradius of first, second and third described pole shoe and shell (2) is 0.01 ~ 0.03mm.
3. the sealing reliability of raising Split magnetic liquid sealing device according to claim 1 and the method in life-span, is characterized in that:
The exradius of first, second described support ring and the difference of internal diameter of outer cover are 0.01 ~ 0.03mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127580.6A CN103234049B (en) | 2013-04-12 | 2013-04-12 | Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127580.6A CN103234049B (en) | 2013-04-12 | 2013-04-12 | Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103234049A CN103234049A (en) | 2013-08-07 |
| CN103234049B true CN103234049B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310127580.6A Expired - Fee Related CN103234049B (en) | 2013-04-12 | 2013-04-12 | Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122078A (en) * | 2016-08-30 | 2016-11-16 | 湖北双剑鼓风机股份有限公司 | The asymmetric carbon ring seal device of card slot type for centrifugal blower |
| CN108930795B (en) * | 2018-09-03 | 2023-05-05 | 广西科技大学 | Mixed concave-convex magnetic fluid sealing device |
| CN112145698A (en) * | 2020-08-25 | 2020-12-29 | 清华大学 | Magnetic liquid sealing device with permanent magnet sheets and magnetic conductive sheets alternately distributed |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3222293C2 (en) * | 1981-06-15 | 1987-12-10 | Rigaku Denki Kk | |
| US5291509A (en) * | 1991-07-12 | 1994-03-01 | Kabushiki Kaisha Komatsu Seisakusho | Gas laser apparatus |
| CN2447582Y (en) * | 2000-11-03 | 2001-09-12 | 罗喜梅 | Magnetofluid seal driving device for vacuum equipment driving shaft |
| CN102537366A (en) * | 2012-01-05 | 2012-07-04 | 北京交通大学 | Sealing method for split type 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 |
-
2013
- 2013-04-12 CN CN201310127580.6A patent/CN103234049B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3222293C2 (en) * | 1981-06-15 | 1987-12-10 | Rigaku Denki Kk | |
| US5291509A (en) * | 1991-07-12 | 1994-03-01 | Kabushiki Kaisha Komatsu Seisakusho | Gas laser apparatus |
| CN2447582Y (en) * | 2000-11-03 | 2001-09-12 | 罗喜梅 | Magnetofluid seal driving device for vacuum equipment driving shaft |
| 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 |
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| CN103234049A (en) | 2013-08-07 |
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