CN102494855A - Leakage detection device for large-diameter rotary sealing shell of magnetic liquid - Google Patents
Leakage detection device for large-diameter rotary sealing shell of magnetic liquid Download PDFInfo
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- CN102494855A CN102494855A CN2011104019145A CN201110401914A CN102494855A CN 102494855 A CN102494855 A CN 102494855A CN 2011104019145 A CN2011104019145 A CN 2011104019145A CN 201110401914 A CN201110401914 A CN 201110401914A CN 102494855 A CN102494855 A CN 102494855A
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- magnetic liquid
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Abstract
The invention provides a leakage detection device for a large-diameter rotary sealing shell of a magnetic liquid, belonging to a sealing field of mechanical engineering and solving the problem of the leakage detection of the large-diameter rotary sealing shell of the magnetic liquid. An opening end of a mandrel (12) of the device is welded at the center of the inner wall of a base (1). A shell (2) is in a split type structure and is fixed by a bolt. A left pole shoe (3), a permanent magnet (4) and a right pole shoe (5) are sequentially arrayed to form a sealing subassembly to be pushed into the shell; and sealing glue is coated on a jointed surface between an end cover (10) and the shell and the end cover is in threaded connection with a thread on the shell so as to fix the end cover on the shell. A first rubber sealing ring and a second rubber sealing ring are respectively arranged between the left side face of the left pole shoe and the hole wall of the shell (2), and between the outer circular face of the right pole shoe and the hole wall of the shell (2). A nitrogen gas cylinder of a gas input and pressure detection device is connected with a joint (7) on the end cover (10) through a pipeline; a valve (9) is installed on the pipeline and a pressure gage (8) is arranged between the valve and the joint.
Description
Technical field
The invention belongs to sealing field of mechanical engineering.
Background technology
Magnetic liquid is as a kind of new function material, because its flowability and magnetic material of having fluid concurrently are widely used in the mechanical seal field in recent years to the response characteristic in magnetic field.Advantages such as other conventional seals technology of magnetic fluid sealing compared with techniques has zero leakage, long, no solid friction of life-span, and dismounting is easy to maintenance.(D >=600mm), shell generally adopts the split-type structure to major diameter magnetic liquid rotary sealing appts owing to its diameter is big.Therefore the check to shell seems particularly important when whether its slip of check reaches designing requirement.Do not see at present leak detection report to major diameter magnetic fluid seal device shell.
Summary of the invention
The technical issues that need to address of the present invention are that existing major diameter magnetic liquid rotary sealing appts lacks the leakage detection apparatus to shell, and a kind of major diameter magnetic liquid rotary seal shell leakage detection apparatus is provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of major diameter magnetic liquid rotary seal shell leakage detection apparatus constitutes the connection between the each several part of this device:
Base is a flat-top cap structure, and axle is a tubular, and its openend is welded in the base inner wall center, and axle is coaxial with base, constitutes the base arbor assembly.
Shell is the split-type structure, with bolt two lobes is connected and fixes, and on the composition surface of two lobes, be coated with fluid sealant, constitutes shell.
First rubber seal is embedded in the Baltimore groove on the left pole shoe excircle, second rubber seal is embedded in the Baltimore groove on the right pole shoe excircle.
Described left pole shoe, permanent magnet, described right pole shoe are arranged in order the composition seal assembly, and seal assembly is pushed in the shell.
Be coated with fluid sealant on the composition surface of end cap and shell,, end cap be fixed on the shell through being threaded on screw and the shell.
The base arbor assembly is pushed in the endoporus of seal assembly, base cooperates with shell is concavo-convex, establishes sealing gasket therebetween and is fixedly connected through bolt and nut.
The nitrogen cylinder of gas input and pressure-detecting device is connected with joint on being connected end cap through pipeline.
Mounted valve on the described pipeline, setting pressure table between valve and joint.
The beneficial effect that the present invention had:
This device can be hunted leak to major diameter magnetic fluid seal device shell, has got rid of the influence of the leakage of shell to the major diameter magnetic fluid seal device.
Description of drawings
The structural drawing of Fig. 1 major diameter magnetic liquid rotary seal shell leakage detection apparatus.
Among the figure: base 1, shell 2, left pole shoe 3, permanent magnet 4, right pole shoe 5, screw 6, joint 7, tensimeter 8, valve 9, end cap 10, second rubber seal 11, axle 12, sealing gasket 13, first rubber seal 14.
Embodiment
With the accompanying drawing is that embodiment is described further the present invention:
A kind of major diameter magnetic liquid rotary seal shell leakage detection apparatus like Fig. 1, constitutes the connection between the each several part of this device:
In the Baltimore groove on left pole shoe 3 excircles of first rubber seal, 14 embeddings, in the Baltimore groove on right pole shoe 5 excircles of second rubber seal, 11 embeddings.
Described left pole shoe 3, permanent magnet 4, described right pole shoe 5 are arranged in order the composition seal assembly, and seal assembly is pushed in the shell 2.
Be coated with fluid sealant on the composition surface of end cap 10 and shell 2,, end cap 10 be fixed on the shell 2 through being threaded on screw 6 and the shell 2;
The base arbor assembly is pushed in the endoporus of seal assembly, base 1 and 2 concavo-convex cooperations of shell are established sealing gasket 13 therebetween and are fixedly connected through bolt and nut.
The nitrogen cylinder of gas input and pressure-detecting device is connected with joint 7 on being connected end cap 10 through pipeline.
Mounted valve 9 on the described pipeline, setting pressure table 8 between valve 9 and joint 7.
The material selection electrical pure iron of left side pole shoe 3, right pole shoe 5.
The used fluid sealant in each composition surface all adopts 1596 fluid sealants.
The gap of the cylindrical of said axle 12 and left and right sides pole shoe tooth top is 0.02mm～0.03mm.
The course of work of major diameter magnetic liquid rotary seal shell leakage detection apparatus:
Earlier pipeline and being connected of joint 7 are taken apart, in device, charge into a spot of helium, then, connect pipeline, open valve 9, in device, charge into nitrogen after, whether valve-off 9 is observed tensimeter and is descended, the expression that descends produces leakage; Detect shell 2 each composition surface with helium mass spectrometer leak detector simultaneously whether leakage is arranged.
Claims (1)
1. major diameter magnetic liquid rotary seal shell leakage detection apparatus is characterized in that:
The base (1) that is connected to that constitutes between the each several part of this device is a flat-top cap structure, and axle (12) is a tubular, and its openend is welded in base (1) inwall center, and axle (12) is coaxial with base (1), constitutes the base arbor assembly;
Shell (2) is the split-type structure, with bolt two lobes is connected and fixes, and on the composition surface of two lobes, be coated with fluid sealant, constitutes shell (2);
First rubber seal (14) is embedded in the Baltimore groove on left pole shoe (3) excircle, second rubber seal (11) is embedded in the Baltimore groove on right pole shoe (5) excircle;
Described left pole shoe (3), permanent magnet (4), described right pole shoe (5) are arranged in order the composition seal assembly, and seal assembly is pushed in the shell (2);
Be coated with fluid sealant on the composition surface of end cap (10) and shell (2),, end cap (10) be fixed on the shell (2) through being threaded on screw (6) and the shell (2);
The base arbor assembly is pushed in the endoporus of seal assembly, base (1) and concavo-convex cooperation of shell (2) are established sealing gasket (13) therebetween and are fixedly connected through bolt and nut;
The nitrogen cylinder of gas input and pressure-detecting device is connected with joint (7) on being connected end cap (10) through pipeline;
Mounted valve on the described pipeline (9), setting pressure table (8) between valve (9) and joint (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104019145A CN102494855A (en) | 2011-12-06 | 2011-12-06 | Leakage detection device for large-diameter rotary sealing shell of magnetic liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104019145A CN102494855A (en) | 2011-12-06 | 2011-12-06 | Leakage detection device for large-diameter rotary sealing shell of magnetic liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102494855A true CN102494855A (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104019145A Pending CN102494855A (en) | 2011-12-06 | 2011-12-06 | Leakage detection device for large-diameter rotary sealing shell of magnetic liquid |
Country Status (1)
| Country | Link |
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| CN (1) | CN102494855A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133700A (en) * | 2013-03-21 | 2013-06-05 | 北京交通大学 | Magnetic liquid rotating and sealing device |
| CN103900768A (en) * | 2014-04-11 | 2014-07-02 | 苏州纽威阀门股份有限公司 | Multifunctional seal ring leakage detecting device |
| CN104791232A (en) * | 2015-03-25 | 2015-07-22 | 北京化工大学 | Method for monitoring rotary pump shaft seal leakage |
| CN104807602A (en) * | 2014-01-26 | 2015-07-29 | 珠海格力电器股份有限公司 | Inflation gun gas tightness detection device and sealing connecting tool thereof |
| CN113532741A (en) * | 2020-04-13 | 2021-10-22 | 南京理工大学 | Magnetic liquid dynamic seal part sand and dust test device |
| CN115046689A (en) * | 2022-08-17 | 2022-09-13 | 上海陛通半导体能源科技股份有限公司 | Leakage detection tool and method for magnetic fluid rotary sealing mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776149A (en) * | 2010-03-01 | 2010-07-14 | 北京交通大学 | Low-temperature and small-diameter magnetic fluid seal device |
| CN101799075A (en) * | 2010-04-12 | 2010-08-11 | 北京交通大学 | Rotation shaft combined sealing device |
| US20110215532A1 (en) * | 2010-03-08 | 2011-09-08 | Beijing Jiaotong University | Ferrofluid sealing apparatus for a reciprocating shaft |
| CN102182830A (en) * | 2011-05-05 | 2011-09-14 | 北京交通大学 | Rotary sealing device for magnetic liquid |
-
2011
- 2011-12-06 CN CN2011104019145A patent/CN102494855A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776149A (en) * | 2010-03-01 | 2010-07-14 | 北京交通大学 | Low-temperature and small-diameter magnetic fluid seal device |
| US20110215532A1 (en) * | 2010-03-08 | 2011-09-08 | Beijing Jiaotong University | Ferrofluid sealing apparatus for a reciprocating shaft |
| CN101799075A (en) * | 2010-04-12 | 2010-08-11 | 北京交通大学 | Rotation shaft combined sealing device |
| CN102182830A (en) * | 2011-05-05 | 2011-09-14 | 北京交通大学 | Rotary sealing device for magnetic liquid |
Non-Patent Citations (1)
| Title |
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| 李德才等: "《大直径大间隙磁性液体静密封的实验研究》", 《兵工学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133700A (en) * | 2013-03-21 | 2013-06-05 | 北京交通大学 | Magnetic liquid rotating and sealing device |
| CN103133700B (en) * | 2013-03-21 | 2015-09-30 | 北京交通大学 | A kind of magnetic liquid rotating sealing device |
| CN104807602A (en) * | 2014-01-26 | 2015-07-29 | 珠海格力电器股份有限公司 | Inflation gun gas tightness detection device and sealing connecting tool thereof |
| CN103900768A (en) * | 2014-04-11 | 2014-07-02 | 苏州纽威阀门股份有限公司 | Multifunctional seal ring leakage detecting device |
| CN103900768B (en) * | 2014-04-11 | 2017-03-01 | 苏州纽威阀门股份有限公司 | A kind of multifunctional containment circle leakage detection apparatus |
| CN104791232A (en) * | 2015-03-25 | 2015-07-22 | 北京化工大学 | Method for monitoring rotary pump shaft seal leakage |
| CN113532741A (en) * | 2020-04-13 | 2021-10-22 | 南京理工大学 | Magnetic liquid dynamic seal part sand and dust test device |
| CN115046689A (en) * | 2022-08-17 | 2022-09-13 | 上海陛通半导体能源科技股份有限公司 | Leakage detection tool and method for magnetic fluid rotary sealing mechanism |
| CN115046689B (en) * | 2022-08-17 | 2022-11-08 | 上海陛通半导体能源科技股份有限公司 | Leakage detection tool and method for magnetic fluid rotary sealing mechanism |
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Application publication date: 20120613 |