CN107588199B - Adjustable magnetic floating oil mist sealing device - Google Patents
Adjustable magnetic floating oil mist sealing device Download PDFInfo
- Publication number
- CN107588199B CN107588199B CN201610548614.2A CN201610548614A CN107588199B CN 107588199 B CN107588199 B CN 107588199B CN 201610548614 A CN201610548614 A CN 201610548614A CN 107588199 B CN107588199 B CN 107588199B
- Authority
- CN
- China
- Prior art keywords
- ring
- magnetic
- poles
- floating
- pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007667 floating Methods 0.000 title claims abstract description 75
- 238000007789 sealing Methods 0.000 title claims abstract description 66
- 239000003595 mist Substances 0.000 title claims abstract description 11
- 230000000694 effects Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses an adjustable magnetic floating oil mist sealing device, wherein a plurality of upper and lower adjusting screws which are fixedly provided with upper and lower adjusting magnetic columns are arranged on an upper and lower valve seat ring, a pair of upper and lower limiting inner magnetic blocks with N poles opposite to each other are fixedly arranged in each upper and lower limiting groove which is symmetrical, and a plurality of or a plurality of pairs of upper and lower ring magnetic columns with N poles opposite to the N poles of the upper and lower adjusting magnetic columns are embedded in the outer diameters of upper and lower floating sealing rings; upper and lower magnetic strips are respectively and symmetrically embedded in the upper and lower rings, N poles of the upper and lower floating seal rings are correspondingly arranged in the N region central positions of the upper and lower limiting inner magnetic blocks, S poles are embedded in the left and right ends of the upper and lower floating seal rings, the S poles are opposite to the N poles, the invention relates to a technical scheme which is widely used in the field of generators and other related fields.
Description
Technical field:
the invention relates to a device for sealing oil mist of a bearing end cover of a generator.
The background technology is as follows:
in order to prevent a floating sealing ring formed by a floating sealing body from rotating together with a large shaft, a waist-shaped hole and a screw are adopted for limiting, and the limiting mode ensures that the whole floating sealing ring cannot integrally follow the large shaft to jump in a range of 360 degrees and even causes a shaft grinding phenomenon; each flap of floating sealing body is preloaded by a leaf spring so as to move back and forth when following the runout of the large shaft, the leaf spring is easy to fail due to mechanical fatigue, and the floating sealing ring losing the preload cannot follow the runout of the large shaft, so that oil leakage is caused. Therefore, there is an urgent need in the art for a device for sealing oil mist on a generator bearing end cap, which has a simple structure, does not lose pre-tightening force, and can follow large shaft runout within 360 degrees.
The invention comprises the following steps:
the invention aims at providing a proposal which is superior to the prior art, and the main technical characteristics are as follows: the method comprises screwing a plurality of upper adjusting screws fixed with upper adjusting magnetic columns into adjusting screw holes uniformly distributed on an upper valve seat ring, symmetrically fixing a plurality of pairs of upper limit inner magnetic blocks with N poles in symmetrical upper limit grooves, adjusting the surface distance of two N poles of each pair of upper limit inner magnetic blocks to be a=20-30 mm, embedding a plurality of or a plurality of pairs of upper ring magnetic columns into the outer diameter of an upper floating sealing ring in parallel according to technical requirements, embedding S pole pairs of a plurality of upper ring outer magnetic strips into the outer diameter of the upper floating sealing ring, embedding two upper end magnetic columns into the left end and the right end of the upper floating sealing ring respectively, arranging the upper floating sealing ring in an upper sealing ring cavity corresponding to the S pole of a lower end magnetic column corresponding to the N pole of each or each pair of upper ring magnetic columns, the center line of the upper adjusting magnetic column coincides with the center line of each upper ring magnetic column or the symmetry axis of the paired upper ring magnetic columns, the distance b between the N pole surface of the upper adjusting magnetic column and the N pole surface of the corresponding upper ring magnetic column or pair of upper ring magnetic columns is 4-20 mm, the N poles of the upper ring outer magnetic stripe symmetrically embedded in the upper floating seal ring are arranged at the central position of N pole region of the upper limiting inner magnetic block opposite to the two N poles in the upper limiting groove, the distance c=5-10 mm between the N pole surfaces of the two upper limiting inner magnetic blocks and the N pole surface of the upper ring outer magnetic stripe is adjustable, the upper floating seal ring with uniformly distributed upper ring magnetic columns and symmetrical upper ring outer magnetic stripes is arranged in the upper valve seat ring, the distance d=4-10 mm between the inner diameter of the upper valve seat ring and the outer surface of the upper floating seal ring is adjustable, and the upper seal ring is fixed on the outer flange of the upper valve seat ring by using a closing bolt; a plurality of lower adjusting screws fixed with lower adjusting magnetic columns are screwed into adjusting screw holes uniformly distributed on the lower valve seat ring, a plurality of pairs of lower limiting inner magnetic blocks with N poles opposite to each other are symmetrically fixed in symmetrical lower limiting grooves, the distance a=20-30 mm between two N surface poles of each pair of lower limiting inner magnetic blocks is adjustable, a plurality of or a plurality of pairs of lower ring magnetic columns are correspondingly embedded in the outer diameter of a lower floating sealing ring in parallel according to the technical requirement, S pairs of a plurality of lower ring outer magnetic strips are correspondingly embedded in the outer diameter of the lower floating sealing ring, two lower end magnetic columns are respectively embedded in the left end and the right end of the lower floating sealing ring, N poles of the lower end magnetic columns correspond to S poles of upper end magnetic columns, the lower floating sealing ring is arranged in a lower sealing ring cavity, and N poles of each or each pair of lower ring magnetic columns correspond to N poles of the lower adjusting magnetic columns, the center line of the lower adjusting magnetic column coincides with the center line of each lower ring magnetic column or the symmetry axis of the paired lower ring magnetic columns, the distance b between the N pole surface of the lower adjusting magnetic column and the N pole surface of the corresponding lower ring magnetic column or pair of lower ring magnetic columns is 4-20 mm, the N poles of the lower ring outer magnetic stripe symmetrically embedded in the lower floating seal ring are arranged at the central position of N pole region of the lower limiting inner magnetic block opposite to the two N poles in the lower limiting groove, the distance c=5-10 mm between the N pole surfaces of the two lower limiting inner magnetic blocks and the N pole surface of the lower ring outer magnetic stripe is adjustable, the upper end of the lower limiting outer magnetic stripe and the bottom surface of the lower limiting groove have a certain floating distance, the lower floating seal ring with uniformly distributed lower ring magnetic columns and symmetrical lower ring outer magnetic stripes is arranged in the lower valve seat ring, the inner diameter of the lower valve seat ring is adjustable with the distance d=4-10 mm between the inner diameter of the lower floating seal ring, and the outer surface of the lower sealing ring is fixed on the outer flange of the lower valve seat ring by using a closing bolt; the upper valve seat ring and the lower valve seat ring are combined together by taking the large shaft as a symmetrical shaft, the upper cover handle combining surface and the lower cover handle combining surface are fixed together by using a handle combining bolt to form a whole ring, and the whole ring is fixed on the generator bearing end cover by using the handle combining bolt through a flange hole on the inner flange. Wherein, the upper and lower valve seat rings are made of non-magnetic conductive materials, such as aluminum alloy, stainless steel materials, etc.; the upper and lower floating seal rings are made of non-metal materials, such as high-strength graphite, polyimide and the like. The two sides of the upper and lower floating sealing rings are well sealed with the inner sides of the upper and lower valve seat rings and the upper and lower sealing covers, the clearance between the inner diameters of the upper and lower floating sealing rings and the surface of the large shaft is 0.01-0.05 mm, the thickness of the magnetic strips outside the upper and lower rings is 10-20 mm, the magnetic strip can be selected according to practical conditions, N poles of the upper and lower outer magnetic strips are arranged at the central positions of N areas of the corresponding upper and lower limiting inner magnetic blocks, and floating adjustment distances are reserved between the upper ends of the upper and lower outer magnetic strips and the bottoms of the upper and lower limiting grooves, and are generally 2-8 mm.
The technical effects achieved by the technical scheme provided by the invention are as follows: when the device is used horizontally, the upper and lower adjusting screws are adjusted so as to adjust the N pole distance between the upper and lower adjusting magnetic columns and the N pole distance between the corresponding upper and lower ring magnetic columns or between the corresponding upper and lower ring magnetic columns, and according to the physical characteristics of the magnet: the principle of homopolar repulsion ensures that the center of the integral floating sealing ring formed by the upper floating sealing ring and the lower floating sealing ring is consistent with the center of the large shaft, the stress is even, and the eccentric wear during the rotation of the large shaft is prevented. The upper and lower magnetic poles N, S generate magnetic attraction force to make the upper and lower floating sealing rings form a complete sealing ring in the upper and lower valve seat rings all the time. When the large shaft rotates, in order to prevent the floating sealing ring from rotating together with the floating sealing ring when following the runout of the large shaft, a plurality of upper and lower outer magnetic strips are symmetrically arranged on the outer diameters of the upper and lower floating sealing rings, S poles of the upper and lower outer magnetic strips are embedded into the outer diameters of the upper and lower floating sealing rings, upper and lower limit grooves are symmetrically arranged on the inner diameters of the upper and lower valve seat rings, upper and lower limit inner magnetic blocks with N poles opposite to each other are symmetrically fixed in the upper and lower limit grooves, N poles of the upper and lower outer magnetic strips are arranged in the center of an N region formed by the corresponding upper and lower limit inner magnetic blocks in pairs relative to the N poles, when the floating sealing ring rotates clockwise under the action of the friction force, N poles of the upper and lower outer magnetic strips are close to each other, N poles of the lower outer magnetic strips are close to each other to the left and the N poles of the inner magnetic blocks, so that a repulsive force opposite to the friction force is generated on the outer diameter of the floating sealing ring, the upper and lower outer magnetic strips are prevented from rotating together with the large shaft, and meanwhile, the upper and lower outer magnetic strips are positioned in the upper and lower limit inner magnetic strips and the bottom surfaces of the upper and lower limit inner magnetic strips are opposite to each other, so that the floating sealing ring can rotate together with the large shaft, and the seal is well and can rotate around the large shaft, and the seal is beyond 360 degrees, and the seal effect is achieved.
When the device is vertically used, the whole floating sealing ring is adjusted to be concentric with the large shaft by adjusting the upper and lower adjusting screws, the offset generated by the dead weight of the whole floating sealing ring is adjusted at the same time, the upper and lower adjusting screws which are symmetrical up and down are adjusted, namely, the upper adjusting screw is retreated outwards, the lower adjusting screw is advanced inwards, and the purpose of overcoming the dead weight of the whole floating sealing ring is achieved by the repulsive force generated by the N poles of the lower adjusting magnetic column and the lower ring magnetic column. Other structures for preventing the integral floating seal ring and the large shaft from synchronously rotating are the same as the horizontal use structure principle.
According to practical application requirements, one upper and lower adjusting magnetic column can correspond to one upper and lower ring magnetic column, and also can correspond to one or three upper and lower ring magnetic columns; the diameters of the upper and lower adjusting magnetic columns and the diameters of the upper and lower ring magnetic columns can be the same or different.
The technical scheme has simple and reasonable structure, ingenious physical characteristics of the applied magnet, excellent performance of following the runout of the large shaft by 360 degrees, good technical effect on the oil mist overflowed from the sealing of the bearing end cover of the generator, novelty, creativity and practicability, and can be widely applied to the power generation field and other related fields.
Description of the drawings:
FIG. 1 is a front view of an adjustable magnetic floating oil mist sealing device
FIG. 2A-a view of an adjustable magnetic float oil mist seal
FIG. 3 is a view B-B of the adjustable magnetic floating oil mist seal device
FIG. 4 is a left side view of the adjustable magnetic floating oil mist seal device
Wherein:
1. upper adjusting screw 2, upper adjusting magnetic column 3 and upper limit inner magnetic block
4. Upper ring outer magnetic stripe 5, inner flange 6, flange hole
7. Upper limit groove 8, upper valve seat ring 9 and upper ring magnetic column
10. Upper floating seal ring 11, upper end magnetic column 12, lower end magnetic column
13. Lower floating seal ring 14, lower adjusting screw 15, lower adjusting magnetic column
16. Lower ring magnetic column 17, lower limit inner magnetic block 18 and lower ring outer magnetic stripe
19. Lower seal ring cavity 20, lower limit groove 21, lower valve seat ring
22. Large shaft 23, upper seal ring cavity 24, outer flange
25. Upper sealing cover 26, handle bolt 27 and lower sealing cover
28. Adjusting screw hole 29, upper cover handle closing surface 30, lower cover handle closing surface
The specific embodiment is as follows:
the upper adjusting screws 1 with the upper adjusting magnetic columns 2 fixed at the front ends are screwed into the adjusting screw holes 28 uniformly distributed on the upper valve seat ring 8, and the S poles of the upper adjusting magnetic columns 2 are fixed at the end parts of the upper adjusting screws 1. The N poles of the paired upper limit inner magnetic blocks 3 are oppositely fixed at two sides of the inside of the upper limit groove 7, the surface distance of the two N poles is adjustable by 20-30 mm, and the upper limit groove 7 is symmetrically machined. Embedding the positions of one or a pair of upper ring magnetic columns 9 corresponding to the upper adjusting magnetic columns 2 in parallel into the outer diameter of the upper floating sealing ring 10, wherein the N pole of the upper ring magnetic column 9 corresponds to the N pole of the upper adjusting magnetic column 2; the S pole of the symmetrical upper ring outer magnetic stripe 4 is embedded into the outer diameter of the upper floating sealing ring 10, the N pole of the upper ring outer magnetic stripe 4 is arranged at the center of an N region formed by two N poles of the two upper limit inner magnetic blocks 3, two upper end magnetic columns 11 are respectively embedded into the left end and the right end of the upper floating sealing ring 10, the S pole of the upper end magnetic column 11 corresponds to the N pole of the lower end magnetic column 12, the upper floating sealing ring 10 is placed into the upper sealing ring cavity 23, and an upper sealing cover 25 is fixed on an outer flange 24 of the upper flap seat ring 8 by using a closing bolt 26.
The lower adjusting screws 14 with the lower adjusting magnetic columns 15 fixed at the front ends are screwed into the adjusting screw holes 28 uniformly distributed on the lower valve seat ring 21, and the S poles of the lower adjusting magnetic columns 15 are fixed at the end parts of the lower adjusting screws 14. N poles of the paired lower limit inner magnetic blocks 17 are oppositely fixed at two sides of the inside of the lower limit groove 20, the surface distance of the two N poles is adjustable by 20-30 mm, and the lower limit groove 20 is symmetrically machined. Embedding one or a pair of lower ring magnetic columns 16 into the outer diameter of the lower floating seal ring 13 in parallel corresponding to the positions of the lower adjusting magnetic columns 15, wherein N poles of the lower ring magnetic columns 16 correspond to N poles of the lower adjusting magnetic columns 15; the S pole of the symmetrical lower ring outer magnetic stripe 18 is embedded into the outer diameter of the lower floating sealing ring 13, the N pole of the lower ring outer magnetic stripe 18 is placed in the center of an N region formed by two N poles of the two lower limiting inner magnetic blocks 17, the two lower end magnetic columns 12 are respectively embedded into the left end and the right end of the lower floating sealing ring 13, the N pole of the lower end magnetic column 12 corresponds to the S pole of the upper end magnetic column 11, the lower floating sealing ring 13 is placed in the lower sealing ring cavity 19, and the lower sealing cover 27 is fixed on the outer flange 24 of the lower valve seat ring 21 by using the closing bolt 26.
The upper valve seat ring 8 and the lower valve seat ring 21 are combined on the large shaft 22 by taking the large shaft 22 as a symmetrical shaft, and the upper cover handle joint surface 29 and the lower cover handle joint surface 30 are fixed together by using the handle joint bolt 26 to form a whole ring. The whole ring is secured to the generator bearing end cap by means of snap bolts 26 through flange holes 6 in the flange 5 in the upper 8 and lower 21 valve seat rings. And (5) finishing implementation.
Claims (1)
1. An adjustable magnetic floating oil mist sealing device is characterized in that a plurality of upper adjusting screws fixed with upper adjusting magnetic columns are screwed into adjusting screw holes uniformly distributed on an upper valve seat ring, symmetrically fixing a plurality of pairs of upper limit inner magnetic blocks with N poles opposite to each other in symmetrical upper limit grooves, wherein the distance a=20-30 mm between the surfaces of two N poles of each pair of upper limit inner magnetic blocks is adjustable, a plurality of or a plurality of pairs of upper ring magnetic columns are correspondingly embedded in the outer diameter of an upper floating seal ring in parallel, the S pole pairs of a plurality of upper ring outer magnetic strips are symmetrically embedded in the outer diameter of the upper floating seal ring, two upper end magnetic columns are respectively embedded in the left end and the right end of the upper floating seal ring, the N pole pairs of the upper end magnetic columns correspond to the S pole of the lower end magnetic column, the upper floating seal ring is arranged in an upper seal ring cavity, the N pole of each upper ring magnetic column or each pair of upper ring magnetic columns corresponds to the N pole of the upper adjusting magnetic column, the center line of the upper adjusting magnetic column coincides with the center line of each upper ring magnetic column or the symmetry axis of the upper ring magnetic column in pairs, the distance b between the N pole surface of the upper adjusting magnetic column and the N pole surface of the corresponding upper ring magnetic column or pair of upper ring magnetic columns is 4-20 mm, the N poles of the upper ring outer magnetic stripe symmetrically embedded in the upper floating sealing ring are arranged in the central position of N areas of the upper limiting inner magnetic block opposite to the two N poles in the upper limiting groove, the distances between the N pole surfaces of the two upper limiting inner magnetic blocks and the N pole surface of the upper ring outer magnetic stripe are adjustable by c=5-10 mm, the upper end of the upper limiting outer magnetic stripe and the bottom surface of the upper limiting groove have a certain floating distance, the upper floating sealing ring with uniformly distributed upper ring magnetic columns and the symmetrical upper ring outer magnetic stripe is arranged in the upper valve seat ring, the distance d=4-10 mm between the inner diameter of the upper valve seat ring and the outer surface of the upper floating sealing ring is adjustable, and the upper sealing cover is fixed on the outer flange of the upper valve seat ring by using a closing bolt; a plurality of lower adjusting screws fixed with lower adjusting magnetic columns are screwed into adjusting screw holes uniformly distributed on the lower valve seat ring, a plurality of pairs of lower limiting inner magnetic blocks with N poles opposite to each other are symmetrically fixed in symmetrical lower limiting grooves, the distance a between two N surface poles of each pair of lower limiting inner magnetic blocks is adjustable, a plurality of or a plurality of pairs of lower ring magnetic columns are correspondingly embedded in the outer diameter of a lower floating sealing ring in parallel, S pole pairs of a plurality of lower ring outer magnetic strips are correspondingly embedded in the outer diameter of the lower floating sealing ring, two lower end magnetic columns are respectively embedded in the left end and the right end of the lower floating sealing ring, N poles of the lower end magnetic columns correspond to S poles of upper end magnetic columns, the lower floating sealing ring is arranged in a lower sealing ring cavity, and N poles of each or each pair of lower ring magnetic columns correspond to N poles of the lower adjusting magnetic columns, the center line of the lower adjusting magnetic column coincides with the center line of each lower ring magnetic column or the symmetry axis of the paired lower ring magnetic columns, the distance b between the N pole surface of the lower adjusting magnetic column and the N pole surface of the corresponding lower ring magnetic column or pair of lower ring magnetic columns is 4-20 mm, the N poles of the lower ring outer magnetic stripe symmetrically embedded in the lower floating seal ring are arranged at the central position of N pole region of the lower limiting inner magnetic block opposite to the two N poles in the lower limiting groove, the distance c=5-10 mm between the N pole surfaces of the two lower limiting inner magnetic blocks and the N pole surface of the lower ring outer magnetic stripe is adjustable, the upper end of the lower limiting outer magnetic stripe and the bottom surface of the lower limiting groove have a certain floating distance, the lower floating seal ring with uniformly distributed lower ring magnetic columns and symmetrical lower ring outer magnetic stripes is arranged in the lower valve seat ring, the inner diameter of the lower valve seat ring is adjustable with the distance d=4-10 mm between the inner diameter of the lower floating seal ring, and the outer surface of the lower sealing ring is fixed on the outer flange of the lower valve seat ring by using a closing bolt; the upper valve seat ring and the lower valve seat ring are combined together by taking the large shaft as a symmetrical shaft, the upper cover handle combining surface and the lower cover handle combining surface are fixed together by using a handle combining bolt to form a whole ring, and the whole ring is fixed on the generator bearing end cover by using the handle combining bolt through a flange hole on the inner flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610548614.2A CN107588199B (en) | 2016-07-07 | 2016-07-07 | Adjustable magnetic floating oil mist sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610548614.2A CN107588199B (en) | 2016-07-07 | 2016-07-07 | Adjustable magnetic floating oil mist sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107588199A CN107588199A (en) | 2018-01-16 |
| CN107588199B true CN107588199B (en) | 2024-04-16 |
Family
ID=61045242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610548614.2A Active CN107588199B (en) | 2016-07-07 | 2016-07-07 | Adjustable magnetic floating oil mist sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107588199B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3604870B1 (en) | 2017-03-30 | 2024-08-21 | Eagle Industry Co., Ltd. | Seal device |
| CN108649840B (en) * | 2018-06-26 | 2024-08-02 | 南京佛莱斯特环保科技有限公司 | Adjustable magnetic suspension device of rotary machinery |
| CN113764243B (en) * | 2021-09-06 | 2022-06-10 | 核工业西南物理研究院 | Separated superconducting magnet flange, superconducting magnet and gyrotron assembly method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975484Y (en) * | 2005-12-17 | 2007-11-14 | 吴雳鸣 | Ring shaped double-layer three surface sealing device |
| CN201373102Y (en) * | 2008-07-07 | 2009-12-30 | 吴雳鸣 | Self-suction type oil-mist sealing purifier |
| RU2444664C1 (en) * | 2010-09-13 | 2012-03-10 | Василий Сигизмундович Марцинковский | Floating seal |
| CN102900941A (en) * | 2011-07-30 | 2013-01-30 | 哈尔滨迅普科技发展有限公司 | Filter type anti-vacuum oil mist absorbing cover |
| CN104279331A (en) * | 2014-03-12 | 2015-01-14 | 赵忠波 | Oil seal mechanism |
| CN205841748U (en) * | 2016-07-07 | 2016-12-28 | 哈尔滨盛迪电力设备有限公司 | adjustable magnetic floating oil mist sealing device |
-
2016
- 2016-07-07 CN CN201610548614.2A patent/CN107588199B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975484Y (en) * | 2005-12-17 | 2007-11-14 | 吴雳鸣 | Ring shaped double-layer three surface sealing device |
| CN201373102Y (en) * | 2008-07-07 | 2009-12-30 | 吴雳鸣 | Self-suction type oil-mist sealing purifier |
| RU2444664C1 (en) * | 2010-09-13 | 2012-03-10 | Василий Сигизмундович Марцинковский | Floating seal |
| CN102900941A (en) * | 2011-07-30 | 2013-01-30 | 哈尔滨迅普科技发展有限公司 | Filter type anti-vacuum oil mist absorbing cover |
| CN104279331A (en) * | 2014-03-12 | 2015-01-14 | 赵忠波 | Oil seal mechanism |
| CN205841748U (en) * | 2016-07-07 | 2016-12-28 | 哈尔滨盛迪电力设备有限公司 | adjustable magnetic floating oil mist sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107588199A (en) | 2018-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107588199B (en) | Adjustable magnetic floating oil mist sealing device | |
| US10451142B2 (en) | Outer cup rotary axial eddy current damper | |
| CA2734602C (en) | A wave-power unit, and a use of a such | |
| CN108087561B (en) | Mixed type magnetic source magnetic fluid sealing device | |
| CN103615482B (en) | A kind of microminiature mechanical type centrifugal friction speed limiting device | |
| CN103343821A (en) | Magnetofluid motive sealing structure suitable for high rotation speed | |
| CN205841748U (en) | adjustable magnetic floating oil mist sealing device | |
| CN103398100B (en) | Magnetic fluid filmatic bearing | |
| CN203670796U (en) | Combined sealing device for sealing liquid | |
| RU2582718C2 (en) | Combined shaft seal | |
| CN202484184U (en) | Magnetic rotation and shaft driving electro-rheological fluid damper | |
| CN203335868U (en) | Magnetic fluid motive seal structure suitable for high rotary speed | |
| TW201346149A (en) | Hybrid type of magnet bearing system | |
| CN105465374B (en) | A kind of hydrogenerator oil mist sealing structure | |
| CN110873147B (en) | Symmetrical multi-cylinder rotary magnetorheological damper | |
| CN204591565U (en) | Sliding bearing and there is the tidal generating set of sliding bearing | |
| CN204174777U (en) | A kind of novel building vibration abatement | |
| CN203670798U (en) | Magnetic fluid sealing optical device capable of conducting rotation and axial reciprocating motion | |
| CN106151525A (en) | A kind of single-end surface mechanical sealing device of improvement | |
| CN205592412U (en) | Antifriction structure of plug valve | |
| CN204852005U (en) | A permanent magnet bearing device for expander | |
| CN209839153U (en) | Double-magnetic-force pre-tightening double-tenon-head sealing lap joint bearing oil mist flexible sealing device | |
| CN102619918B (en) | No-leakage rotatable and axially movable fluid damper | |
| CN203098722U (en) | No-leakage rotatable and axially movable fluid damper | |
| RU2663438C1 (en) | Combined magneto-fluid seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |