CN204344383U - A kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device - Google Patents
A kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device Download PDFInfo
- Publication number
- CN204344383U CN204344383U CN201420828822.4U CN201420828822U CN204344383U CN 204344383 U CN204344383 U CN 204344383U CN 201420828822 U CN201420828822 U CN 201420828822U CN 204344383 U CN204344383 U CN 204344383U
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- CN
- China
- Prior art keywords
- main shaft
- stainless steel
- plate assembly
- carbon brush
- tooth plate
- 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.)
- Expired - Fee Related
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- Y02E10/722—
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- Wind Motors (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The utility model belongs to generator set main shaft anti-thunder technical field, is specifically related to a kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device.This intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device, comprise stainless steel steel loop, cold-resistant resistance toly turn round cable, carbon brush electric discharge tooth plate assembly, insulating support, describedly cold-resistant resistance toly turn round the tower cylinder down lead that cable one end is connected to each root of blade on wheel hub, the other end is connected on stainless steel steel loop by main shaft threading hole through main shaft; Described stainless steel steel loop is installed on inside main shaft and between base; Described carbon brush electric discharge tooth plate assembly one end friction is on stainless steel steel loop, the other end is connected to column foot earth point place by tower cylinder down lead, described carbon brush electric discharge tooth plate assembly is arranged on base by insulating support, and insulating support ensures the insulation of carbon brush electric discharge tooth plate assembly and base.Its beneficial effect is: avoid lightning current to flow through main shaft bearing, causes bearing surface to burn damage, ensure that the physical life of main shaft bearing.
Description
Technical field
The utility model belongs to generator set main shaft anti-thunder technical field, is specifically related to a kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device.
Background technique
Wind energy, as a kind of clean renewable energy sources, is contained abundant, enjoys the favor of countries in the world.Along with the increase of Wind turbines single-machine capacity, blower fan height is more and more higher, and impeller diameter is increasing, and relative too increases by the risk of being struck by lightning.Be struck by lightning into the maximum harm of fan safe operation, huge thunder energy causes blade to burn, generator insulating punctures, the damage etc. of electrical equipment.Fan and attendant bring huge threat.
Wind-driven generator traditional at present does not design special main shaft lightning current leakage path, can only pass through the associated metal device composition current by pass such as main shaft, bearing, base, structural member.
But this lightning current earial drainage mode can cause lightning current to pass through main shaft bearing.Owing to having oil film and gap to exist in main shaft bearing, current by pass middle impedance must be caused to increase.Cause bearing surface to burn damage, reduce the working life of bearing, be unfavorable for the protection of bearing.
Model utility content
The utility model, in order to make up the defect of prior art, provides one and effectively avoids lightning current leakage path by main shaft bearing, causes bearing surface to burn the intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device damaging phenomenon.
The utility model is achieved by the following technical solution:
A kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device, comprise stainless steel steel loop, cold-resistant resistance toly turn round cable, carbon brush electric discharge tooth plate assembly, insulating support, describedly cold-resistant resistance toly turn round the tower cylinder down lead that cable one end is connected to each root of blade on wheel hub, the other end is connected on stainless steel steel loop by main shaft threading hole through main shaft; Described stainless steel steel loop is installed on inside main shaft and between base; Described carbon brush electric discharge tooth plate assembly one end friction is on stainless steel steel loop, the other end is connected to column foot earth point place by tower cylinder down lead, described carbon brush electric discharge tooth plate assembly is arranged on base by insulating support, and insulating support ensures the insulation of carbon brush electric discharge tooth plate assembly and base.
Further, described stainless steel steel loop is arranged on inside main shaft, is provided with insulating sheet material between stainless steel steel loop and main shaft, three is fixed together by the mode such as insulated hanger or sealer, ensures the electrical isolation of stainless steel steel loop and main shaft.
Further, described carbon brush electric discharge tooth plate assembly top distance stainless steel steel loop distance is less than 2mm, and utilize point discharge principle, the air breakdown of the tooth plate assembly tip that stainless steel steel loop and carbon brush discharged, forms effective lightning current leakage path.
Further, described cold-resistant resistance to cable of turning round is with reference to design code for lightning-proof, and diameter is greater than 70mm2, and cable should possess enough resistance to abilities of turning round, and avoids twisting off cable during blower variable-pitch leaf.
The beneficial effects of the utility model are: a kind of intermediate speed permanent magnet wind driven group of the utility model main shaft bearing lighting protection device provides an independently lightning current leakage path, lightning current is avoided to flow through main shaft bearing, cause bearing surface to burn damage, ensure that the physical life of main shaft bearing.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is the close-up schematic view of the utility model base and main shaft.
In figure, 1 blade, 2 wheel hubs, 3 main shafts, 4 bases, 5 cold-resistant resistance toly turn round cable, 6 main shaft threading holes, 7 insulating sheet materials, 8 stainless steel steel loops, 9 carbon brush electric discharge tooth plate assemblies, 10 insulating supports, 11 tower cylinder down leads.
Embodiment
Accompanying drawing 1,2 is a kind of specific embodiment of the present utility model.A kind of intermediate speed permanent magnet wind driven group of this model utility main shaft 3 bearing lighting protection device, comprise stainless steel steel loop 8, cold-resistant resistance toly turn round cable 5, carbon brush electric discharge tooth plate assembly 9, insulating support 10, describedly cold-resistant resistance toly turn round the tower cylinder down lead 11 that cable 5 one end is connected to each blade 1 root on wheel hub 2, the other end is connected on stainless steel steel loop 8 by main shaft threading hole 6 through main shaft 3; Described stainless steel steel loop 8 is installed on inside main shaft 3 and between base 4; Described carbon brush electric discharge tooth plate assembly 9 one end friction is on stainless steel steel loop 8, the other end is connected to column foot earth point place by tower cylinder down lead 11, described carbon brush electric discharge tooth plate assembly 9 is arranged on base 4 by insulating support 10, and insulating support 10 ensures the insulation of carbon brush electric discharge tooth plate assembly 9 and base 4.
Further, described stainless steel steel loop 8 is arranged on inside main shaft 3, is provided with insulating sheet material 7 between stainless steel steel loop 8 and main shaft 3, three is fixed together by the mode such as insulated hanger or sealer, ensures the electrical isolation of stainless steel steel loop 8 and main shaft 3.
Further, described carbon brush electric discharge tooth plate assembly 9 top distance stainless steel steel loop 8 distance is less than 2mm, and utilize point discharge principle, the air breakdown at tooth plate assembly 9 tip of stainless steel steel loop 8 and carbon brush being discharged, forms effective lightning current leakage path.
Further, described cold-resistant resistance to cable 5 of turning round is with reference to design code for lightning-proof, and diameter is greater than 70mm2, and cable should possess enough resistance to abilities of turning round, and avoids twisting off cable during blower variable-pitch leaf.
The utility model is not limited to above-mentioned mode of execution, anyone should learn make under enlightenment of the present utility model with the utility model, there is identical or close technological scheme, all fall within protection domain of the present utility model.
Technology, shape, structure part that the utility model is not described in detail are known technology.
Claims (4)
1. an intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device, it is characterized in that, comprise stainless steel steel loop, cold-resistant resistance toly turn round cable, carbon brush electric discharge tooth plate assembly, insulating support, describedly cold-resistant resistance toly turn round the tower cylinder down lead that cable one end is connected to each root of blade on wheel hub, the other end is connected on stainless steel steel loop by main shaft threading hole through main shaft; Described stainless steel steel loop is installed on inside main shaft and between base; Described carbon brush electric discharge tooth plate assembly one end friction is on stainless steel steel loop, the other end is connected to column foot earth point place by tower cylinder down lead, described carbon brush electric discharge tooth plate assembly is arranged on base by insulating support, and insulating support ensures the insulation of carbon brush electric discharge tooth plate assembly and base.
2. a kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device according to claim 1, it is characterized in that: between described stainless steel steel loop and main shaft, be provided with insulating sheet material, by insulated hanger or sealer, three is fixed together, ensures the electrical isolation of stainless steel steel loop and main shaft.
3. a kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device according to claim 1, it is characterized in that: described carbon brush electric discharge tooth plate assembly top distance stainless steel steel loop distance is less than 2mm, utilize point discharge principle, discharge stainless steel steel loop and carbon brush the air breakdown of tooth plate assembly tip, forms effective lightning current leakage path.
4. a kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device according to claim 1, is characterized in that: described cold-resistant resistance to cable of turning round is with reference to design code for lightning-proof, and diameter is greater than 70mm2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420828822.4U CN204344383U (en) | 2014-12-24 | 2014-12-24 | A kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420828822.4U CN204344383U (en) | 2014-12-24 | 2014-12-24 | A kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204344383U true CN204344383U (en) | 2015-05-20 |
Family
ID=53227656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420828822.4U Expired - Fee Related CN204344383U (en) | 2014-12-24 | 2014-12-24 | A kind of intermediate speed permanent magnet wind driven group main shaft bearing lighting protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204344383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126669A (en) * | 2021-03-24 | 2022-09-30 | 西门子歌美飒可再生能源公司 | Lightning flux density reduction in wind turbines |
-
2014
- 2014-12-24 CN CN201420828822.4U patent/CN204344383U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126669A (en) * | 2021-03-24 | 2022-09-30 | 西门子歌美飒可再生能源公司 | Lightning flux density reduction in wind turbines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20211224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |