CN103234049A - Method for improving sealing reliability and prolonging service life of split magnetic liquid sealing device - Google Patents
Method for improving sealing reliability and prolonging service life of split magnetic liquid sealing device Download PDFInfo
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- CN103234049A CN103234049A CN2013101275806A CN201310127580A CN103234049A CN 103234049 A CN103234049 A CN 103234049A CN 2013101275806 A CN2013101275806 A CN 2013101275806A CN 201310127580 A CN201310127580 A CN 201310127580A CN 103234049 A CN103234049 A CN 103234049A
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- pole shoe
- upper half
- lower half
- half part
- half portion
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Abstract
The invention relates to a method for improving sealing reliability and prolonging service life of a split magnetic liquid sealing device and belongs to the field of mechanical engineering sealing. The method comprises the steps of enabling matching processing between a casing (2) and a first pole shoe (5-1), a second pole shoe (5-2) and a third pole shoe (5-3) to be clearance fit; enabling a first support ring (3-1) and a second support ring (3-2) to be arranged on the left side of the first pole shoe and the right side of the third pole shoe respectively; enabling matching processing between the casing and the first support ring and the second support ring to be interference fit; adjusting a seal assembly in assembly, enabling joint surfaces of both an upper half seal assembly and a lower half seal assembly to be on the same horizontal plane, and finally fixing an end cover (6) on the casing through threaded connection between screws and the casing so as to enable the seal assembly to be axially fixed. The problem of dislocation and attaching incompactness between end faces of existing split pole shoes is solved, the sealing reliability of the split magnetic liquid sealing device is improved, the sealing service life of the split magnetic liquid sealing device is prolonged, and the method is simple and easy to achieve.
Description
Technical field
The present invention relates to a kind of sealing reliability of split magnetic fluid seal device and method of sealing life of improving, belong to sealing field of mechanical engineering.
Background technique
At present when big gap split magnetic fluid seal device is installed, cooperating between split pole shoe and the split shell is transition fit.Though this fit system can guarantee the split shell and fix black box, but also exist and produce the changing of the relative positions and the not tight problem of fitting between the end face of split pole shoe, this will make between the pole shoe mating face and form leakage way, cause the magnetic fluid sealing voltage endurance capability to reduce, life-span and the reliability of sealing also decrease.
Summary of the invention
Technical problem to be solved by this invention is to overcome in the existing split magnetic fluid sealing to fit tight between the split pole shoe mating face and the sealability that causes and the deficiency of reliability decrease, and the sealing reliability and the method for life that improve the split magnetic fluid seal device are provided.
Technological scheme of the present invention:
Improve sealing reliability and the method for life of split magnetic fluid seal device, this method comprises:
The opening of upper half part of upper half part of upper half part of upper half part first permanent magnet of step 1 first support ring upper half part, first pole shoe, upper half part of second pole shoe, second permanent magnet, upper half part of the 3rd pole shoe, second support ring all is linked in sequence downwards, forms last half black box;
The equal upstream sequence of the opening of lower half portion of lower half portion of lower half portion of lower half portion of lower half portion of lower half portion of lower half portion of first support ring, first pole shoe, first permanent magnet, second pole shoe, second permanent magnet, the 3rd pole shoe, second support ring connects, and forms following half black box;
Step 2 is respectively last, the junction plane of upper half part of first support ring of following half black box and lower half portion of first support ring, the junction plane of lower half portion of first pole shoe upper half part and first pole shoe, the junction plane of lower half portion of upper half part of second pole shoe and second pole shoe, the junction plane of lower half portion of upper half part of the 3rd pole shoe and the 3rd pole shoe, on the junction plane of lower half portion of upper half part of second support ring and second support ring, smear sealer, be buckled in the rotating shaft, and connect upper half part of first pole shoe and lower half portion of first pole shoe with bolt and nut respectively, lower half portion of upper half part of second pole shoe and second pole shoe, lower half portion of upper half part of the 3rd pole shoe and the 3rd pole shoe, on the inner headed face of first to the 3rd pole shoe, inject first to the 3rd magnetic liquid respectively, form black box;
Upper half part that is connected to form first support ring, first pole shoe of lower half portion of upper half part of first support ring and first support ring and lower half portion of first pole shoe be connected to form first pole shoe; Lower half portion of upper half part of second pole shoe and second pole shoe be connected to form second pole shoe; Lower half portion of upper half part of the 3rd pole shoe and the 3rd pole shoe be connected to form the 3rd pole shoe; Lower half portion of upper half part of second support ring and second support ring be connected to form second support ring;
Lower half portion of upper half part of first permanent magnet and first permanent magnet forms first permanent magnet; Lower half portion of upper half part of second permanent magnet and second permanent magnet forms second permanent magnet;
First rubber ring, second rubber ring, the 3rd rubber ring are installed in respectively in the groove on first pole shoe, second pole shoe, the 3rd pole shoe periphery;
Adjust black box, make the junction plane of half black box and time half black box, on same horizontal plane;
Step 3 is smeared sealer at the junction plane of two half-shells, is buckled on the described black box, with bolt and nut two half-shells is connected to form shell;
Cooperating between first, second and third pole shoe and the shell is Spielpassung;
Cooperation between first, second support ring and the shell is interference fit;
Step 4 is threaded by screw and shell, and end cap is fixed on the shell, makes the black box axial restraint;
The difference Lg of the interior pore radius of the exradius of described first, second and third pole shoe and shell is 0.01～0.03mm;
The exradius of described first, second 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 present invention establishes first support ring and second support ring respectively with the right side of the left side of first pole shoe and the 3rd pole shoe, cooperation between first, second support ring and the shell is processed as interference fit, cooperating between first, second and third pole shoe and the shell is processed as Spielpassung, when thereby make being installed, shell acts on pressure transfer on the pole shoe to support ring, overcome and produced between the end face of split pole shoe the changing of the relative positions and the not tight problem of fitting, reliability and the working life of having improved the split magnetic fluid sealing.
Description of drawings
Fig. 1 is the split magnetic fluid seal device.
Fig. 2 is the partial enlarged drawing at Figure 1B place.
Fig. 3 is the A-A sectional view of Fig. 1.
Among the figure: rotating shaft 1, shell 2, the 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, the 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 sealing reliability and the method for life of split magnetic fluid seal device, this method comprises:
Upper half part of upper half part of step 1 first support ring upper half part, first pole shoe, upper half part of first pole shoe, first permanent magnet, upper half part of second pole shoe, upper half part of second permanent magnet, upper half part of the 3rd pole shoe, upper half part opening of second support ring all are linked in sequence downwards, form last 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 lower half portion of lower half portion of lower half portion of first support ring, first pole shoe, first permanent magnet, second pole shoe, second permanent magnet, the 3rd pole shoe, second support ring connects, and forms following half black box;
Step 2 is respectively last, the junction plane of upper half part of first support ring of following half black box and lower half portion of first support ring, on, the junction plane of upper half part of first pole shoe of following half black box and lower half portion of first pole shoe, the junction plane of lower half portion of upper half part of second pole shoe and second pole shoe, the junction plane of lower half portion of upper half part of the 3rd pole shoe and the 3rd pole shoe, on the junction plane of lower half portion of upper half part of second support ring and second support ring, smear sealer, be buckled in the rotating shaft 1, and connect upper half part of first pole shoe and lower half portion of first pole shoe with bolt and nut respectively, lower half portion of upper half part of second pole shoe and second pole shoe, lower half portion of upper half part of the 3rd pole shoe and the 3rd pole shoe, at first to the 3rd pole shoe 5-1,5-2, inject first to the 3rd magnetic liquid 4-1 on the inner headed face of 5-3 respectively, 4-2,4-3 forms black box;
Lower half portion of upper half part of first support ring and first support ring be connected to form the first support ring 3-1; Lower half portion of upper half part of second support ring and second support ring be connected to form the second support ring 3-2;
Lower half portion of upper half part of first pole shoe and first pole shoe be connected to form the first pole shoe 5-1; Lower half portion of upper half part of second pole shoe and second pole shoe be connected to form the second pole shoe 5-2;
Lower half portion of upper half part of the 3rd pole shoe and the 3rd pole shoe be connected to form the 3rd pole shoe 5-3;
Lower half portion of upper half part of first permanent magnet and first permanent magnet forms the first permanent magnet 6-1; Lower half portion of upper half part of second permanent magnet and second permanent magnet forms the second permanent magnet 6-2;
The first rubber ring 8-1, the second rubber ring 8-2, the 3rd rubber ring 8-3 are installed in respectively in the groove on the first pole shoe 5-1, the second pole shoe 5-2, the 3rd pole shoe 5-3 periphery;
Adjust black box, make the junction plane of half black box and time half black box, on same horizontal plane.
Step 3 is smeared sealer at the junction plane of two half-shells, is buckled on the 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, and end cap 7 is fixed on the shell, makes the black box axial restraint;
Cooperating between first, second and third pole shoe and the shell 2 is Spielpassung, and the cooperation between first, second support ring and the shell 2 is interference fit, as shown in Figure 2.
The difference Lg of the interior pore radius of the exradius of described first, second and third pole shoe and shell 2 is 0.01～0.03mm, and the span of the difference of the interior pore radius of the exradius of first, second and third pole shoe and shell 2 gets its end value or the arbitrary value in the middle of it all can;
The exradius of described first, second 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 all can.
The material of described rotating shaft 1 is the 2cr13 stainless steel.The material of described shell 2 is non-magnetic stainless steel.The material of described first, second support ring is non-magnetic stainless steel material.Described magnetic liquid is machine oil based magnetic liquid, ester group magnetic liquid or silicone oil based magnetic liquid.The material of described first and second permanent magnet is NdFeB material.The material of described first to the 3rd pole shoe is the 2cr13 stainless steel.
Claims (3)
1. improve sealing reliability and the method for life of split magnetic fluid seal device, this method comprises:
The opening of upper half part of upper half part of upper half part of step 1 first pole shoe, upper half part of first permanent magnet, second pole shoe, upper half part of second permanent magnet, the 3rd pole shoe all is linked in sequence downwards, forms last 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 lower half portion of first pole shoe, first permanent magnet, second pole shoe, second permanent magnet, the 3rd pole shoe connects, and forms following half black box;
Step 2 is respectively last, the junction plane of upper half part of first pole shoe of following half black box and lower half portion of first pole shoe, the junction plane of lower half portion of upper half part of second pole shoe and second pole shoe, on the junction plane of lower half portion of upper half part of the 3rd pole shoe and the 3rd pole shoe, smear sealer, be buckled in the rotating shaft (1), and connect upper half part of first pole shoe and lower half portion of first pole shoe with bolt and nut respectively, lower half portion of upper half part of second pole shoe and second pole shoe, lower half portion of upper half part of the 3rd pole shoe and the 3rd pole shoe, at first to the 3rd pole shoe (5-1,5-2, inject first to the 3rd magnetic liquid (4-1 on inner headed face 5-3) respectively, 4-2,4-3), form black box;
Lower half portion of upper half part of first pole shoe and first pole shoe be connected to form first pole shoe (5-1); Lower half portion of upper half part of second pole shoe and second pole shoe be connected to form second pole shoe (5-2); Lower half portion of upper half part of the 3rd pole shoe and the 3rd pole shoe be connected to form the 3rd pole shoe (5-3);
Lower half portion of upper half part of first permanent magnet and first permanent magnet forms first permanent magnet (6-1); Lower half portion of upper half part of second permanent magnet and second permanent magnet forms second permanent magnet (6-2);
First rubber ring (8-1), second rubber ring (8-2), the 3rd rubber ring (8-3) are installed in respectively in the groove on first pole shoe (5-1), second pole shoe (5-2), the 3rd pole shoe (5-3) periphery;
Adjust black box, make the junction plane of half black box and time half black box, on same horizontal plane;
Step 3 is smeared sealer at the junction plane of two half-shells, is buckled on the 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), and end cap (7) is fixed on the shell, makes the black box axial restraint;
It is characterized in that:
Cooperating between described first, second and third pole shoe and the shell (2) is Spielpassung;
The right side (5-3) of the left side of described first pole shoe (5-1) and the 3rd pole shoe is established first support ring and second support ring respectively; Cooperation between first, second support ring and the shell is interference fit.
2. sealing reliability and the method for life of raising split magnetic fluid seal device according to claim 1 is characterized in that:
The difference Lg of the interior pore radius of the exradius of described first, second and third pole shoe and shell (2) is 0.01～0.03mm.
3. sealing reliability and the method for life of raising split magnetic fluid seal device according to claim 1 is characterized in that:
The exradius of described first, second 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 true CN103234049A (en) | 2013-08-07 |
| CN103234049B CN103234049B (en) | 2015-10-28 |
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Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN103234049B (en) |
Cited By (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 |
| CN108930795A (en) * | 2018-09-03 | 2018-12-04 | 广西科技大学 | A kind of lenticular device for sealing magnetic fluid of mixed type |
| 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 |
Cited By (4)
| 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 |
| CN108930795A (en) * | 2018-09-03 | 2018-12-04 | 广西科技大学 | A kind of lenticular device for sealing magnetic fluid of mixed type |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103234049B (en) | 2015-10-28 |
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Granted publication date: 20151028 Termination date: 20200412 |