CN103256389A - Magnetic type sealing device - Google Patents
Magnetic type sealing device Download PDFInfo
- Publication number
- CN103256389A CN103256389A CN2013102074819A CN201310207481A CN103256389A CN 103256389 A CN103256389 A CN 103256389A CN 2013102074819 A CN2013102074819 A CN 2013102074819A CN 201310207481 A CN201310207481 A CN 201310207481A CN 103256389 A CN103256389 A CN 103256389A
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- magnetic
- electromagnet
- seal arrangement
- type seal
- magnetic conductive
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Abstract
The invention relates to a magnetic type sealing device. The magnetic type sealing device comprises magnetism conducting pole shoes, a magnet, a magnetism conducting medium and a rotating shaft, wherein the magnetism conducting pole shoes are arranged on two sides of the magnet, the magnetism conducting medium is arranged among the rotating shaft and the pole shoes, the magnet is an electromagnet, the electromagnet comprises an iron core and coils, and the winding directions of the coils on the iron core are consistent. Due to the fact that the electromagnet is adopted to provide a magnetic field, the magnetic type sealing device is convenient to assemble and disassemble, currents of the electromagnet can be adjusted, and then intensity of the magnetic field which is provided can be adjusted; particularly, magnetic resin is adopted by the magnetism conducting medium, and magnetic saturated intensity of the magnetism conducting mediums is greatly improved.
Description
Technical field
The present invention relates to a kind of seal arrangement, relate in particular to a kind of magnetic-type seal arrangement.
Background technique
At present, in the magnetic-type seal arrangement, its magnetic field is provided by permanent magnet mostly, this seal arrangement, the magnetic field, back of magnetizing is changeless, does not have adjustability, and because there is the effect of strong magnetic in permanent magnet, whole sealing device need be used special tooling when assembly process, and assembling difficulty is bigger.In addition, the present used magnetic medium of magnetic-type seal arrangement is the magnetic fluid of liquid state, the magnetic saturation intensity of magnetic fluid is less, its sealability is subjected to certain restriction, and in the motive sealing process, when shaft axis speed was higher, magnetic fluid easily broke away from the effect in magnetic field under centrifugal action, and sealability descends.Need cleaning or change after magnetic fluid is polluted, because magnetic fluid can have adhesive force to pole shoe under the permanent magnet magnetic field action, cleaning, to change difficulty bigger.And in actual applications, when cavity pressure be subjected to certain the influence increase to a certain degree suddenly after, and the magnetic intensity that permanent magnet provides does not increase thereupon, cause sealing medium to be revealed, seal arrangement is short-duration failure in this case, and whole sealing device applicability on the rapid adjustment sealability is relatively poor.
Summary of the invention
The objective of the invention is to overcome above defective a kind of easy installation and removal, magnetic-type seal arrangement that electromagnetism is adjustable are provided.
In order to realize above purpose, technological scheme of the present invention is, a kind of magnetic-type seal arrangement, it comprises magnetic conductive pole piece, magnet, magnetic conductive media, running shaft, the both sides of magnet are provided with magnetic conductive pole piece, and magnetic conductive media is located between running shaft and the pole shoe, and described magnet is electromagnet, electromagnet comprises iron core and coil, the winding direction unanimity of described coil on iron core.
In order to realize the adjusting of magnetic field size, described current of electromagnet is adjustable.
For the enhanced leaktightness reliability, there is not utmost point tooth on the described pole shoe.
For the enhanced leaktightness reliability, described running shaft is provided with utmost point tooth.
In order to improve the magnetic saturation intensity of magnetic conductive media, described magnetic conductive media is magnetic fat.
In order to reduce the friction temperature of magnetic conductive media, improve sealing and the life-span of magnetic conductive media, described magnetic conductive pole piece is provided with bosh.
The invention has the beneficial effects as follows that owing to adopt electromagnet that magnetic field is provided, installation and removal are convenient, and current of electromagnet is adjustable, thereby the magnetic intensity that provides is adjustable, particularly magnetic conductive media adopts magnetic fat, has improved the magnetic saturation intensity of magnetic conductive media greatly.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structural representation of the electromagnet of the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
With reference to accompanying drawing, it comprises electromagnet 1, magnetic conductive pole piece 4, magnetic fat 5, running shaft 8.Magnetic conductive pole piece 4 is arranged on the both sides of electromagnet 1, and magnetic fat 5 is located between running shaft 8 and the magnetic conductive pole piece 4.Electromagnet 1, magnetic conductive pole piece 4, magnetic fat 5, running shaft 8 constitute the magnetic seal loop.Running shaft 8 is provided with utmost point tooth 7, and magnetic fat 5 can be filled in the gap between magnetic conductive pole piece 4 and the utmost point tooth 7 under the magnetic field effect that electromagnet 1 produces, thus the sealing in gap between the magnetic conductive pole piece 4 on the realization end cap 2 and the utmost point tooth 7.
During work, end cap 2 mainly play fixed supporting role.Magnetic saturation intensity according to used magnetic fat 5, the electrical current size that can adjust coil 10 in the electromagnet 1 changes the magnetic field size, also can select the magnetic fat 5 of different magnetic saturation intensities by changing coil 10 electrical current sizes, improve the extensive use of seal arrangement.When running shaft 8 rotation processes, magnetic fat 5 can produce certain frictional heat, and can in time take away the heat that magnetic fat 5 produces this moment by water flowing in bosh 3, thus the sealability and the life-span that are conducive to improve magnetic fat 5.
Coil 10 needs unanimity around the direction on the iron core 9 in the electromagnet 1, can guarantee the magnetic line of force 6 direction unanimities that each electromagnet 1 produces after the energising.Because electromagnet 1 does not have magnetic when assembling, compare the assembling of permanent magnet simultaneously, have little, the safe characteristics of assembling difficulty.
Magnetic fat 5 is when assembling and cleaning, and with failure of current, the electrical current of coil 10 is zero in the electromagnet 1, is not having under the effect of magnetic field like this, and 4 pairs of magnetic fat 5 of magnetic conductive pole piece do not have adhesive attraction power yet, are convenient to interpolation, cleaning and the replacing of magnetic fat 5.
Claims (10)
1. magnetic-type seal arrangement, it comprises magnetic conductive pole piece, magnet, magnetic conductive media, running shaft, the both sides of magnet are provided with magnetic conductive pole piece, magnetic conductive media is located between running shaft and the pole shoe, it is characterized in that, described magnet is electromagnet, and electromagnet comprises iron core and coil, the winding direction unanimity of described coil on iron core.
2. a kind of magnetic-type seal arrangement according to claim 1 is characterized in that described current of electromagnet is adjustable.
3. according to claim 1 or the described a kind of magnetic-type seal arrangement of claim 2, it is characterized in that there is not utmost point tooth on the described pole shoe.
4. according to claim 1 or the described a kind of magnetic-type seal arrangement of claim 2, it is characterized in that described running shaft is provided with utmost point tooth.
5. according to claim 1 or the described a kind of magnetic-type seal arrangement of claim 2, it is characterized in that described magnetic conductive media is magnetic fat.
6. a kind of magnetic-type seal arrangement according to claim 3 is characterized in that, described magnetic conductive media is magnetic fat.
7. a kind of magnetic-type seal arrangement according to claim 4 is characterized in that, described magnetic conductive media is magnetic fat.
8. a kind of magnetic-type seal arrangement according to claim 5 is characterized in that described magnetic conductive pole piece is provided with bosh.
9. a kind of magnetic-type seal arrangement according to claim 6 is characterized in that described magnetic conductive pole piece is provided with bosh.
10. a kind of magnetic-type seal arrangement according to claim 7 is characterized in that described magnetic conductive pole piece is provided with bosh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102074819A CN103256389A (en) | 2013-05-30 | 2013-05-30 | Magnetic type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102074819A CN103256389A (en) | 2013-05-30 | 2013-05-30 | Magnetic type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103256389A true CN103256389A (en) | 2013-08-21 |
Family
ID=48960506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102074819A Pending CN103256389A (en) | 2013-05-30 | 2013-05-30 | Magnetic type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103256389A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500959A (en) * | 2020-12-07 | 2021-03-16 | 九江市耐得封缸酒业有限公司 | Tea and glutinous rice mixed fermentation equipment and method |
| CN113374976A (en) * | 2021-05-07 | 2021-09-10 | 三峡大学 | Device and method for repairing broken water pipe by adopting magnetic fluid |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB783881A (en) * | 1954-03-05 | 1957-10-02 | Vickers Electrical Co Ltd | Improvements relating to shaft and like seals |
| GB959073A (en) * | 1962-06-23 | 1964-05-27 | Crane Packing Ltd | Improvements relating to seals |
| JPS5377952A (en) * | 1976-12-21 | 1978-07-10 | Fuji Electric Co Ltd | Magnetic fluid sealing device |
| US4335885A (en) * | 1980-08-19 | 1982-06-22 | Mechanical Technology Incorporated | Plural fluid magnetic/centrifugal seal |
| JPS60222668A (en) * | 1984-04-20 | 1985-11-07 | Nok Corp | Magnetic fluid seal device |
| JPH0828206A (en) * | 1994-07-11 | 1996-01-30 | Japan Atom Power Co Ltd:The | Shaft seal device for steam turbine |
| JP2003266392A (en) * | 2002-03-15 | 2003-09-24 | Rigaku Corp | Movement device using fluid responding to magnetic field |
| CN202580036U (en) * | 2012-05-11 | 2012-12-05 | 湘潭电机股份有限公司 | Large-journal combined type rotary sealing device |
-
2013
- 2013-05-30 CN CN2013102074819A patent/CN103256389A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB783881A (en) * | 1954-03-05 | 1957-10-02 | Vickers Electrical Co Ltd | Improvements relating to shaft and like seals |
| GB959073A (en) * | 1962-06-23 | 1964-05-27 | Crane Packing Ltd | Improvements relating to seals |
| JPS5377952A (en) * | 1976-12-21 | 1978-07-10 | Fuji Electric Co Ltd | Magnetic fluid sealing device |
| US4335885A (en) * | 1980-08-19 | 1982-06-22 | Mechanical Technology Incorporated | Plural fluid magnetic/centrifugal seal |
| JPS60222668A (en) * | 1984-04-20 | 1985-11-07 | Nok Corp | Magnetic fluid seal device |
| JPH0828206A (en) * | 1994-07-11 | 1996-01-30 | Japan Atom Power Co Ltd:The | Shaft seal device for steam turbine |
| JP2003266392A (en) * | 2002-03-15 | 2003-09-24 | Rigaku Corp | Movement device using fluid responding to magnetic field |
| CN202580036U (en) * | 2012-05-11 | 2012-12-05 | 湘潭电机股份有限公司 | Large-journal combined type rotary sealing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500959A (en) * | 2020-12-07 | 2021-03-16 | 九江市耐得封缸酒业有限公司 | Tea and glutinous rice mixed fermentation equipment and method |
| CN113374976A (en) * | 2021-05-07 | 2021-09-10 | 三峡大学 | Device and method for repairing broken water pipe by adopting magnetic fluid |
| CN113374976B (en) * | 2021-05-07 | 2022-04-08 | 三峡大学 | Device and method for repairing broken water pipe by adopting magnetic fluid |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130821 |