CN202759155U - A lightning protection device of the main shaft bearing of a wind turbine generator at a plateau - Google Patents
A lightning protection device of the main shaft bearing of a wind turbine generator at a plateau Download PDFInfo
- Publication number
- CN202759155U CN202759155U CN2012204572665U CN201220457266U CN202759155U CN 202759155 U CN202759155 U CN 202759155U CN 2012204572665 U CN2012204572665 U CN 2012204572665U CN 201220457266 U CN201220457266 U CN 201220457266U CN 202759155 U CN202759155 U CN 202759155U
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- lightning protection
- wind
- protection device
- bearing
- driven generator
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Abstract
The utility model discloses a lightning protection device of the main shaft bearing of a wind turbine generator at a plateau. The lightning protection device comprises conductive parts which are disposed between a bearing rotating member and the main frame of the wind turbine generator. Multiple conductive points are disposed at positions on the conductive parts electrically connected with downleads, the positions being close to the bearing rotating member. The lightning protection device skillfully uses the principle of point discharge so as to improve conductivity of the conductive parts and effectively improve technical defects of a conventional carbon brush. In addition, the lightning protection device has advantages of a simple structure and good practicality.
Description
Technical field
The utility model relates to the shocking preventing technology of wind-driven generator, is specifically related to a kind of plateau mainshaft bearing of wind-driven generator lightning protection device, is applied to the lightning protection at mainshaft bearing of wind-driven generator place, plateau.
Background technology
Wind energy is as a kind of regenerative resource of cleaning, and its amount of accumulateing is huge, more and more is subjected to the attention of countries in the world.Click the increase of capacity along with wind-driven generator, rotor diameter increases, and the height that wind-driven generator is liftoff is also in continuous increase, and the probability that is struck by lightning has also increased a lot, and wind-driven generator has been produced huge harm.
At present, the lightening arresting method of plateau wind-driven generator is an impedance path to be set lightning current is incorporated into the earth, lightning protection at the mainshaft bearing of wind-driven generator parts all is to adopt the mode of brush (such as carbon brush) to come lightning current is implemented by-pass shunt, makes lightning current flow through as few as possible bearing.But under the thunderstorm environment of plateau, thunderstorm is frequent, intensity of lightning current is large, and the electric arc that carbon brush produces when friction conduction lightning current more easily aggravates its wearing and tearing, and its contact resistance is increased, and the by-pass shunt effect weakens, and is unfavorable for the protection of bearing.
Therefore be necessary prior art is improved.
The utility model content
Easily produce electricity for existing bearing of wind power generator place lightning protection carbon brush and make bearing arc unstable wear; cause the contact resistance of bearing to increase; the by-pass shunt effect weakens; the technological deficiency that is unfavorable for the bearing protection; the utility model provides a kind of plateau mainshaft bearing of wind-driven generator lightning protection device; the utlity model has good electric conductivity, effectively solve the technological deficiency of conduction carbon brush in the background technology.
The technical solution adopted in the utility model is:
A kind of plateau mainshaft bearing of wind-driven generator lightning protection device, comprise conductive component, the position of described conductive component is between bearing rotary parts and the wind-driven generator main frame, position near described bearing rotary parts on the described conductive component is provided with a plurality of conductive tips, and described conductive component connects downlead.When lightning current arrives main shaft bearing; because high-tension effect; the rotating parts of bearing and the breakdown discharge of the air between the conductive tip; form low impedance path and lightning current is conducted to the downlead that is connected with this device; thereby realize the by-pass shunt effect; force most of lightning current to walk around bearing, reach the purpose of protection bearing.
Further, described conductive component is provided with waist-shaped hole, and connector is installed in conductive component on the wind-driven generator main frame by waist-shaped hole, by waist-shaped hole is set, can adjust flexibly conductive component to the distance between the bearing rotary parts.
Further, the distance between the conductive tip of described conductive component and the bearing rotary parts is no more than 2mm.
Further, described conductive component is the metallic plate with satisfactory electrical conductivity that a front end is processed into zigzag or comb teeth-shaped.
Further, described conductive component is to be fixed on the described wind-driven generator main frame by connector, on the described wind-driven generator main frame two or more conductive components is housed.
The beneficial effects of the utility model are: utilize the point discharge principle, effectively the lightning current on the mainshaft bearing of wind-driven generator is guided to ground, thereby play lightning protection effect, conductive component with a plurality of conductive tips is compared traditional conduction carbon brush, have the advantages such as quicker to point, that discharge capacity is stronger, thereby solve the technological deficiency of conduction carbon brush lightning protection, main shaft bearing is had significant lightning protection effect; The advantages such as simultaneously, the utility model also has simple in structure, and practicality is good.
Description of drawings
Fig. 1 is the mounting structure schematic diagram of plateau described in the utility model mainshaft bearing of wind-driven generator lightning protection device;
Fig. 2 is the structural representation of zigzag conductive component described in the utility model;
Fig. 3 is the structural representation of comb teeth-shaped conductive component described in the utility model;
Among the figure, 1, the bearing rotary parts, 2, conductive component, 3, downlead, 4, base bearing, 5, gear box, 6, generator, 7, main frame, 8, waist-shaped hole.
Embodiment
Further set forth the utility model below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of plateau mainshaft bearing of wind-driven generator lightning protection device, comprise conductive component 2, the position of described conductive component 2 is between bearing rotary parts 1 and the wind-driven generator main frame 7, be fixed on the described wind-driven generator main frame 7 by connector, quantity is two or more, and the position near described bearing rotary parts 1 on the described conductive component 2 is provided with a plurality of conductive tips, and described conductive component 2 connects downlead 3.When lightning current arrives bearing; because high-tension effect; the rotating parts 1 of bearing and the breakdown discharge of air between the conductive tip 2; form low impedance path and lightning current is conducted to the downlead 3 that is connected with this device; thereby realize the by-pass shunt effect; force most of lightning current to walk around bearing, reach the purpose of protection bearing.
As further execution mode of the present utility model, described conductive component is provided with waist-shaped hole 8, connector is installed in conductive component 2 on the wind-driven generator main frame 7 by waist-shaped hole 8, by waist-shaped hole 8 is set, can adjust flexibly conductive component 2 to the distance between the bearing rotary parts 1.
As further execution mode of the present utility model, the distance between the conductive tip of described conductive component 2 and the bearing rotary parts 1 is no more than 2mm.
As further execution mode of the present utility model, described conductive component is the metallic plate with satisfactory electrical conductivity that a front end is processed into zigzag (becoming homeless such as Fig. 2) or comb teeth-shaped (as shown in Figure 3).
Should be understood that; above-mentioned embodiment only is used for further setting forth the technical solution of the utility model; the utility model is not done any restriction; those of ordinary skills do not break away from do under the enlightenment of essence of the present utility model and technology do not have novelty and creationary distortion or a retouching; all should be considered as within protection range of the present utility model, protection range of the present utility model is specifically decided on its claims.
Claims (5)
1. plateau mainshaft bearing of wind-driven generator lightning protection device, comprise conductive component, it is characterized in that, the position of described conductive component is between bearing rotary parts and the wind-driven generator main frame, position near described bearing rotary parts on the described conductive component is provided with a plurality of conductive tips, and described conductive component is electrically connected downlead.
2. described a kind of plateau mainshaft bearing of wind-driven generator lightning protection device according to claim 1 is characterized in that, described conductive component is provided with waist-shaped hole.
3. described a kind of plateau mainshaft bearing of wind-driven generator lightning protection device according to claim 1 and 2 is characterized in that, the distance between the conductive tip of described conductive component and the bearing rotary parts is no more than 2mm.
4. described a kind of plateau mainshaft bearing of wind-driven generator lightning protection device according to claim 1 and 2 is characterized in that, described conductive component is the metallic plate with satisfactory electrical conductivity that a front end is processed into zigzag or comb teeth-shaped.
5. described a kind of plateau mainshaft bearing of wind-driven generator lightning protection device according to claim 1 and 2, it is characterized in that, described conductive component is to be fixed on the described wind-driven generator main frame by connector, on the described wind-driven generator main frame two or more conductive components is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204572665U CN202759155U (en) | 2012-09-10 | 2012-09-10 | A lightning protection device of the main shaft bearing of a wind turbine generator at a plateau |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204572665U CN202759155U (en) | 2012-09-10 | 2012-09-10 | A lightning protection device of the main shaft bearing of a wind turbine generator at a plateau |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202759155U true CN202759155U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204572665U Expired - Fee Related CN202759155U (en) | 2012-09-10 | 2012-09-10 | A lightning protection device of the main shaft bearing of a wind turbine generator at a plateau |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202759155U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253057A (en) * | 2018-08-28 | 2019-01-22 | 新疆金风科技股份有限公司 | The installation method of the lightning-protection system of permanent magnet direct-driving aerogenerator group |
| CN113757054A (en) * | 2021-10-27 | 2021-12-07 | 上海电气风电集团股份有限公司 | Down-lead sliding connection device of wind generating set |
-
2012
- 2012-09-10 CN CN2012204572665U patent/CN202759155U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253057A (en) * | 2018-08-28 | 2019-01-22 | 新疆金风科技股份有限公司 | The installation method of the lightning-protection system of permanent magnet direct-driving aerogenerator group |
| CN113757054A (en) * | 2021-10-27 | 2021-12-07 | 上海电气风电集团股份有限公司 | Down-lead sliding connection device of wind generating set |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20180910 |