CN220599919U - Zero-clearance sealing device for bearing of hydroelectric generating set - Google Patents
Zero-clearance sealing device for bearing of hydroelectric generating set Download PDFInfo
- Publication number
- CN220599919U CN220599919U CN202322117414.XU CN202322117414U CN220599919U CN 220599919 U CN220599919 U CN 220599919U CN 202322117414 U CN202322117414 U CN 202322117414U CN 220599919 U CN220599919 U CN 220599919U
- Authority
- CN
- China
- Prior art keywords
- bearing
- sealing
- teeth
- close
- ring
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 76
- 239000000463 material Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 210000003781 tooth socket Anatomy 0.000 claims 1
- 239000003595 mist Substances 0.000 abstract description 17
- 239000003921 oil Substances 0.000 description 19
- 238000009423 ventilation Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to the technical field of bearing sealing equipment, in particular to a zero-clearance sealing device for a hydroelectric generating set bearing, which comprises a seat ring, wherein the seat ring is positioned at the inner side of the middle part of a bearing end cover, a bearing groove is arranged at the middle part of an inner ring of the seat ring, the bearing groove is connected and matched with a bearing, tooth grooves are formed in the upper side and the lower side of the inner ring, sealing teeth are arranged at the inner side of the tooth grooves, a positioning baffle is arranged at the outer side of the sealing teeth close to the inner ring, and an air sealing plate is arranged at the inner side of the sealing teeth close to the inner ring. In the zero-clearance sealing device for the hydroelectric generating set bearing, oil mist is blocked by the air sealing plate arranged in the zero-clearance sealing device, the oil mist is further blocked from escaping by the follow-up sealing action of the sealing teeth and the sealing action of the positioning baffle, the air sealing plate which is bent downwards can be automatically and tightly attached to the rotating shaft, the optimal sealing state is achieved, and particularly when the wind pressure is increased, the air sealing plate can be tightly attached to the rotating shaft, so that the oil mist is effectively prevented from escaping.
Description
Technical Field
The utility model relates to the technical field of bearing sealing equipment, in particular to a zero-clearance sealing device for a bearing of a hydroelectric generating set.
Background
In the use of hydroelectric generating set, the bearing position of generating set is higher to the leakproofness requirement, and the bearing housing closing plate produces oil leak, throws oil and oil mist phenomenon easily, causes the generator to decide, rotor surface pollution is serious, and oil mist and dust pile up in stator core ventilation ditch and rotor magnetic pole ventilation ditch department, causes generator ventilation heat dissipation to become poor, and oil mist and dust adsorb on the insulating layer for a long time, leads to generator insulating part insulating properties to decline, and accelerated ageing very easily causes motor coil short circuit and breakdown, causes the generator insulation damage accident, has taken huge economic loss for the power plant. Potential harm is brought to the safe, stable and reliable operation of the generator, and the safe production of the generator is threatened.
Disclosure of Invention
The utility model aims to provide a zero-clearance sealing device for a hydro-generator set bearing, which is used for solving the problems that in the background art, oil mist and dust are accumulated at a stator core ventilation groove and a rotor magnetic pole ventilation groove to cause poor ventilation and heat dissipation of a generator, and the oil mist and the dust are adsorbed on an insulating layer for a long time to cause the reduction of the insulating performance of an insulating part of the generator.
In order to achieve the purpose, the utility model provides a zero-clearance sealing device for a hydroelectric generating set bearing, which comprises a seat ring, wherein the seat ring is positioned on the inner side of the middle part of a bearing end cover, a bearing groove is formed in the middle of an inner ring of the seat ring and is connected and matched with the bearing, tooth grooves are formed in the upper side and the lower side of the inner ring, sealing teeth are arranged on the inner side of the tooth grooves, a positioning baffle is arranged on the outer side of the sealing teeth close to the inner ring, and an air sealing plate is arranged on the inner side of the sealing teeth close to the inner ring.
Preferably, a plurality of respirators are arranged on the surface of the bearing end cover, and the respirators are arranged on the surface of the bearing end cover in an annular equidistant manner.
Preferably, the seat ring and the inner side of the bearing end cover are integrally formed.
Preferably, a spring is arranged at one end of the sealing tooth close to the bottom of the tooth groove.
Preferably, the airtight plate is made of soft rubber material, and one side of the airtight plate, which is close to the bearing, is of a downward bending structure.
Preferably, the sealing teeth are equally divided into a plurality of even equal parts in the circumferential direction and are closely arranged, each equal part can radially advance and retreat, the sensitivity is high, and the sealing teeth can radially track along with the displacement of the rotating shaft.
Preferably, the material of one side of the sealing tooth close to the bearing is rubber, and the material of one side of the sealing tooth far away from the bearing is metal.
Compared with the prior art, the utility model has the beneficial effects that:
in the zero-clearance sealing device for the hydroelectric generating set bearing, oil mist is blocked by the air sealing plate arranged in the zero-clearance sealing device, the oil mist is further blocked from escaping by the follow-up sealing action of the sealing teeth and the sealing action of the positioning baffle, the air sealing plate which is bent downwards can be automatically and tightly attached to the rotating shaft, the optimal sealing state is achieved, and particularly when the wind pressure is increased, the air sealing plate can be tightly attached to the rotating shaft, so that the oil mist is effectively prevented from escaping.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
fig. 2 is a schematic view of a partial cross-sectional structure of the present utility model.
The meaning of each reference sign in the figure is:
1. a seat ring; 11. an inner ring; 12. sealing teeth; 13. a gas seal plate; 14. positioning a baffle; 15. a spring; 2. a respirator; 3. and a bearing end cover.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a zero-clearance sealing device for a hydroelectric generating set bearing, which is shown in fig. 1-2, and comprises a seat ring 1, wherein the seat ring 1 is positioned at the inner side of the middle part of a bearing end cover 3, a bearing groove is arranged at the middle part of an inner ring 11 of the seat ring 1 and is connected and matched with a bearing, tooth grooves are arranged at the upper side and the lower side of the inner ring 11, sealing teeth 12 are arranged at the inner side of the tooth grooves, a positioning baffle 14 is arranged at the outer side of the sealing teeth 12 close to the inner ring 11, an air sealing plate 13 is arranged at the inner side of the sealing teeth 12 close to the inner ring 11, the problem of loose sealing is effectively solved, the problem of leakage of lubricating oil and oil mist is truly reduced to the greatest extent, and the zero-clearance sealing device plays a great role in improving the economic operation efficiency of the hydroelectric generating set.
In this embodiment, the surface of the bearing end cover 3 is provided with a plurality of respirators 2, and the respirators 2 are arranged on the surface of the bearing end cover 3 in an annular equidistant arrangement for opening when gas passes through.
Specifically, the inner sides of the seat ring 1 and the bearing end cover 3 are integrally formed, so that the seat ring 1 is prevented from being broken.
Further, a spring 15 is arranged at one end of the sealing tooth 12 close to the bottom of the tooth slot, and one side of the sealing tooth 12 can be tightly propped against the outer wall of the bearing.
Furthermore, the air sealing plate 13 is made of soft rubber materials, one side, close to the bearing, of the air sealing plate 13 is of a downward bending structure, the downward bending air sealing plate 13 can be automatically and tightly attached to the rotating shaft, an optimal sealing state is achieved, and particularly when the wind pressure is increased, the air sealing plate 13 can be tightly attached to the rotating shaft, and oil mist can be effectively prevented from escaping.
Furthermore, the seal teeth 12 are equally divided into a plurality of even equal parts in the circumferential direction and are closely arranged, each equal part can radially advance and retreat, the sensitivity is high, and the radial tracking can be carried out along with the displacement of the rotating shaft, so that the bearing end cover 3 can be ensured to always keep and stably operate under the gapless condition under the condition that the shaft radially swings.
Further, the sealing tooth 12 is made of rubber on one side close to the bearing, and the rubber material has the characteristics of wear resistance, oil resistance, high temperature resistance, aging resistance, chemical corrosion resistance and the like, has a self-lubricating function, and is made of metal on one side far away from the bearing.
When the zero-clearance sealing device for the hydroelectric generating set bearing is used, firstly, the bearing end cover 3 is connected with the rotating shaft through the bearing, the outer side of the bearing is sealed with the inner side of the bearing end cover 3 through the seat ring 1, the oil mist is blocked by the air sealing plate 13 in the seat ring 1, the oil mist escape is further blocked by the follow-up sealing action of the sealing teeth 12 and the sealing action of the positioning baffle 14, the downwards bent air sealing plate 13 can be automatically and tightly attached to the rotating shaft to achieve the optimal sealing state, and particularly when the wind pressure is increased, the air sealing plate 13 can be tightly attached to the rotating shaft, so that the oil mist escape is effectively prevented, the dynamic operation is contained, the static requirement is also contained, the dynamic and static conditions are organically combined together, the requirements of various pressures in the operation are met, and the phenomena of oil throwing, oil leakage and oil mist escape of the bearing sealing of the hydroelectric generating set can be effectively solved.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. Zero clearance sealing device of hydroelectric set bearing, including seat circle (1), its characterized in that: the bearing ring is characterized in that the seat ring (1) is located on the inner side of the middle of the bearing end cover (3), a bearing groove is formed in the middle of an inner ring (11) of the seat ring (1) and is connected with the bearing, tooth grooves are formed in the upper side and the lower side of the inner ring (11) of the bearing, sealing teeth (12) are arranged on the inner side of the tooth grooves, a positioning baffle (14) is arranged on the outer side of the sealing teeth (12) close to the inner ring (11), and an air sealing plate (13) is arranged on the inner side of the sealing teeth (12) close to the inner ring (11).
2. The hydro-generator set bearing zero clearance seal device of claim 1, wherein: the surface mounting of bearing end cover (3) has a plurality of respirators (2), the surface that respirator (2) are located bearing end cover (3) is annular equidistant arrangement and sets up.
3. The hydro-generator set bearing zero clearance seal device of claim 1, wherein: the inner sides of the seat ring (1) and the bearing end cover (3) are integrally formed.
4. The hydro-generator set bearing zero clearance seal device of claim 1, wherein: and a spring (15) is arranged at one end of the sealing tooth (12) close to the bottom of the tooth socket.
5. The hydro-generator set bearing zero clearance seal device of claim 1, wherein: the air sealing plate (13) is made of soft rubber materials, and one side, close to the bearing, of the air sealing plate (13) is of a downward bending structure.
6. The hydro-generator set bearing zero clearance seal device of claim 1, wherein: the sealing teeth (12) are equally divided into a plurality of even equal parts in the circumferential direction and are closely arranged, each equal part can radially advance and retreat, the sensitivity is high, and the sealing teeth can radially track along with the displacement of the rotating shaft.
7. The hydro-generator set bearing zero clearance seal device of claim 6, wherein: the sealing teeth (12) are made of rubber on one side close to the bearing, and the sealing teeth (12) are made of metal on one side far away from the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322117414.XU CN220599919U (en) | 2023-08-08 | 2023-08-08 | Zero-clearance sealing device for bearing of hydroelectric generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322117414.XU CN220599919U (en) | 2023-08-08 | 2023-08-08 | Zero-clearance sealing device for bearing of hydroelectric generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220599919U true CN220599919U (en) | 2024-03-15 |
Family
ID=90168643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322117414.XU Active CN220599919U (en) | 2023-08-08 | 2023-08-08 | Zero-clearance sealing device for bearing of hydroelectric generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220599919U (en) |
-
2023
- 2023-08-08 CN CN202322117414.XU patent/CN220599919U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20120032542A1 (en) | Water-proof dust-proof and salty-mist-proof cooling fan | |
| CN110645357A (en) | Radial multi-lip supporting oil seal device | |
| CN220599919U (en) | Zero-clearance sealing device for bearing of hydroelectric generating set | |
| CN202817454U (en) | Thunder guiding device | |
| CN207777426U (en) | A kind of dynamic sealing device for ocean engineering power transmission sliding ring | |
| CN204402646U (en) | Compressor end sealing structure of turbosuperchargers | |
| CN216112166U (en) | Combined labyrinth sealing device | |
| CN201810547U (en) | Water pump bearing sealing device | |
| CN214197243U (en) | Multidirectional sealing device | |
| CN212225993U (en) | Oil-proof and dust-proof sealing device | |
| CN204610831U (en) | Mist of oil comprehensive treatment device | |
| CN106230167B (en) | The sealing assembling structure of motor cover and electric machine casing | |
| CN210859819U (en) | Automatic grease discharging type wind generating set main shaft sealing device | |
| CN101413425A (en) | Intermediate body assembly for turbocharger | |
| CN201666311U (en) | Dual seal main bearing used for wind generators | |
| CN203368192U (en) | Stepping motor with dustproof output shaft | |
| CN220151896U (en) | Sealing assembly part for lower frame of water turbine | |
| CN207363763U (en) | A kind of ring seal structure at turbocharger air compressor end | |
| CN217380990U (en) | Mechanical equipment heat insulation sealing mechanism | |
| CN202327110U (en) | Air sealing cover of hydraulic generator oil box | |
| CN204573043U (en) | A kind of combined type ring gear seal arrangement | |
| CN205715682U (en) | Clearance sealing device | |
| CN217355563U (en) | Radial multi-lip combined sealing device | |
| CN209781481U (en) | Bearing sealing ring of permanent magnet wind power generator | |
| CN210890108U (en) | Built-in radial multi-lip bidirectional sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |