CN204419459U - A kind of noise reduction lightning protection blade of wind-driven generator - Google Patents
A kind of noise reduction lightning protection blade of wind-driven generator Download PDFInfo
- Publication number
- CN204419459U CN204419459U CN201420757793.7U CN201420757793U CN204419459U CN 204419459 U CN204419459 U CN 204419459U CN 201420757793 U CN201420757793 U CN 201420757793U CN 204419459 U CN204419459 U CN 204419459U
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- band
- blade
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- connecing
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- Y02E10/722—
Abstract
The utility model discloses a kind of noise reduction lightning protection blade of wind-driven generator, comprise blade body, the end of its trailing edge is provided with flexible brush, and blade inlet edge edge is provided with main connecing and dodges band, trailing edge place is provided with auxiliary connecing and dodges band, main connect dodge band with auxiliary connect dodge be with between dodge to be with by join on skew and be connected; Main connect dodge band, auxiliary connecing is dodged band and is reticular structure, and to be made up of aluminium foil alloy material, and main connect dodge band, auxiliary connecing is dodged band and is connected with female electrified wire by wire; Described female electrified wire is by blade metal flange, carbon brush and wheel hub ground connection; Compared with prior art, the utility model noise is little, strengthens the conducting efficiency to thunder and lightning, thunder-strike current is passed through approach passage more and imports underground faster, prevent, avoid thunder and lightning to pile up the destruction of causing.
Description
Technical field
The utility model belongs to wind power generation field, particularly a kind of noise reduction lightning protection blade of wind-driven generator.
Background technique
At present, along with the development of wind power technology, grid-connected wind power unit strides forward towards maximization, in order to absorb more energy, the height of wheel hub increases, and the diameter of wind wheel increases, thus thunderbolt is become in physical environment have destructive major influence factors to Wind turbines.
The lightning protection of traditional wind power generator incorporated in power network group blade generally to adopt on blade fixing point to install arrester and protects blade by the mode that the metal of wired earth connects sudden strain of a muscle and exempt from thunderbolt.But this Lightning Protection connects sudden strain of a muscle weak effect, anti-lightning strike area is little, and after being struck by lightning, the discharge value of arrester heating, cable is not enough, causes occurring the phenomenons such as blade bursts, cable breakage.Affect the normal operation of wind park, add maintenance cost, wind power generating set large scale development, also cause traditional blade lightning protection to occur serious deficiency.
Model utility content
The purpose of this utility model is to provide a kind of lightning-arrest effective, and the thunder-lightning blade of wind-driven generator that noise is little, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technological scheme:
A kind of thunder-lightning blade of wind-driven generator, comprise leading edge, trailing edge and link, trailing edge is provided with flexible brush; Described flexible brush is placed in the end of trailing edge, and reaches blade tip, and on longitudinal direction, flexible brush and trailing edge form right angle, and in a lateral direction, upper surface or the lower surface of flexible brush and trailing edge are aimed at; Described leading edges is provided with main connecing and dodges band, and trailing edge place is provided with auxiliary connecing and dodges band, main connect dodge band with auxiliary connect dodge be with between dodge to be with by join on skew and be connected; Main connect dodge band, auxiliary connecing is dodged band and is reticular structure, and to be made up of aluminium foil alloy material, and main connect dodge band, auxiliary connecing is dodged band and is connected with female electrified wire by wire; Described female electrified wire is by blade metal flange, carbon brush and wheel hub ground connection.
Further, the length of described flexible brush is the 15-20% of trailing edge total length.
Further, described flexible brush forms by aiming at the bristle lining up at least one row, and bristle has triangular-section.
The invention also discloses a kind of manufacture method of noise reduction lightning protection blade of wind-driven generator, comprise following technology and step:
1) blade adopts Al-alloy pipe to do longeron, aluminium alloy plate does girt strip, inside fill out foamed plastics, cover the structure of glass fibre reinforced plastics outward, the Al-alloy pipe of blade longeron diminishes gradually from blade root to the cross section of blade tip, to meet the requirement of twisted blade and to alleviate leaf weight, the axle that blade root is connected with wheel hub and flange are by weld or bolt connects; Described glass fibre reinforced plastics is epoxy resin, infiltrates the different glass fibre of length or carbon fiber and solidify to form blade surface;
2) arrange main connecing in the leading edges of blade and dodge band, trailing edge place arranges auxiliary connecing and dodges band, main connect dodge band with auxiliary connect dodge be with between dodge to be with by join on skew and be connected; Main connect dodge band, auxiliary connecing is dodged band and is the reticular structure that aluminium foil alloy material makes, main connect dodge band, auxiliary connecing is dodged band and is connected with female electrified wire by wire, female electrified wire passes through blade metal flange, carbon brush and wheel hub ground connection;
3) flexible brush is set at trailing edge end, it is arranged on auxiliary the connecing of blade and dodges between band, length is the 15-20% of trailing edge total length, the bristle of different length is used according to the radius of blade and chord length, the blade of general 24 meters long, the bristle lengths of flexible brush is at about 8cm, and flexible brush at least arranges a row, and bristle externally has triangular-section.
Model utility advantage
Compared with prior art, the utility model accompanies flexible brush at blade end, can reduce vibration, reduces noise; Leading edge in blade both sides, trailing edge arrange to connect and dodge band, and connect wire with reticulated aluminum alloy, then by blade top metal flange, carbon brush and wheel hub ground connection; Thus the conducting efficiency strengthened thunder and lightning, thunder-strike current is passed through approach passage more and import underground faster, prevent, avoid thunder and lightning to pile up the destruction of causing.
Accompanying drawing explanation
Fig. 1 is the structural representation of noise reduction lightning protection blade of wind-driven generator in the utility model.
Fig. 2 is Figure 1A-A cross section structure schematic diagram.
Wherein icon: 1-leading edge, 2-trailing edge, 3-flexible brush, 4-link, auxiliary the connecing of 5-dodges band,
6-master connects and dodges band, the female electrified wire of 7-, 8-wire, 9-blade tip.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment 1: refer to accompanying drawing 1,2, a kind of noise reduction lightning protection blade of wind-driven generator, and comprise leading edge 1, trailing edge 2 and link 4, trailing edge 2 is provided with flexible brush 3, described flexible brush 3 is placed in the end of trailing edge 2, and reach blade tip 9, and the length of flexible brush 3 is the 15-20% of vane overall length degree, reason is it is the region producing most of aerodynamic force noise herein, on longitudinal direction, flexible brush 3 and trailing edge 2 form right angle, in a lateral direction, upper surface or the lower surface of flexible brush 3 and trailing edge 2 are aimed at, the bristle of different length is used according to the radius of blade and chord length, the blade of general 24 meters long, the bristle lengths of flexible brush 3 is at about 8cm, wherein, flexible brush 3 forms by aiming at the bristle lining up at least one row, bristle has triangular-section, interval between bristle should reach minimum possible value, described leading edge 1 edge is provided with main connecing and dodges band 6, and trailing edge 2 edge is provided with auxiliary connecing and dodges band 5, main connect dodge band 6 with auxiliary connect to dodge to dodge to be with by join on skew between band 5 be connected, master connects sudden strain of a muscle band 6, the auxiliary sudden strain of a muscle band 5 that connects is reticular structure, and is made up of aluminium foil alloy material, and master connects sudden strain of a muscle band 6, the auxiliary sudden strain of a muscle band 5 that connects is connected with female electrified wire 7 by wire 8, described female electrified wire 7 is by blade metal flange, carbon brush and wheel hub ground connection.
The present embodiment also discloses a kind of manufacture method of noise reduction lightning protection blade of wind-driven generator, comprises following technology and step:
1) blade adopts Al-alloy pipe to do longeron, aluminium alloy plate does girt strip, inside fill out foamed plastics, cover the structure of glass fibre reinforced plastics outward, the Al-alloy pipe of blade longeron diminishes gradually from blade root to the cross section of blade tip, to meet the requirement of twisted blade and to alleviate leaf weight, the axle that blade root is connected with wheel hub and flange are by weld or bolt connects; Described glass fibre reinforced plastics is epoxy resin, infiltrates the different glass fibre of length or carbon fiber and solidify to form blade surface;
2) arrange main connecing at leading edge 1 edge of blade and dodge band 6, trailing edge 2 edge arranges auxiliary connecing and dodges band 5, main connect dodge band 6 with auxiliary connect to dodge to dodge to be with by join on skew between band 5 be connected; Main connect dodge band 6, auxiliary connecing is dodged band 5 and is the reticular structure that aluminium foil alloy material makes, main connect dodge band 6, auxiliary connecing is dodged band 5 and is connected with female electrified wire 7 by wire 8, female electrified wire 7 passes through blade metal flange, carbon brush and wheel hub ground connection;
3) flexible brush 3 is set at trailing edge 2 end, it is arranged on auxiliary the connecing of blade tip 9 and dodges between band 5, length is the 15-20% of trailing edge 2 total length, according to the bristle that the radius of blade uses length different with chord length, the blade of general 24 meters long, the bristle lengths of flexible brush 3 is at about 8cm, and flexible brush 3 at least arranges a row, and bristle externally has triangular-section.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any reference character in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to mode of execution, but not each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technological scheme in each embodiment also through appropriately combined, can form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (3)
1. a noise reduction lightning protection blade of wind-driven generator, comprise leading edge (1), trailing edge (2) and link (4), it is characterized in that, trailing edge (2) is provided with flexible brush (3); Described flexible brush (3) is placed in the end of trailing edge (2), and reach blade tip (9), on longitudinal direction, flexible brush (3) and trailing edge (2) form right angle, in a lateral direction, the upper surface of flexible brush (3) and trailing edge (2) or lower surface are aimed at; Described leading edge (1) edge is provided with main connecing and dodges band (6), trailing edge (2) edge is provided with auxiliary connecing and dodges band (5), main connect dodge band (6) with auxiliary connect to dodge to be with to dodge to be with by join on skew between (5) be connected; Main connect dodge band (6), auxiliary connecing is dodged band (5) and is reticular structure, and be made up of aluminium foil alloy material, and main connect dodge band (6), auxiliary connecing is dodged band (5) and is connected with female electrified wire (7) by wire (8); Described female electrified wire (7) is by blade metal flange, carbon brush and wheel hub ground connection.
2. noise reduction lightning protection blade of wind-driven generator according to claim 1, is characterized in that, the length of described flexible brush (3) is the 15-20% of trailing edge (2) total length.
3. noise reduction lightning protection blade of wind-driven generator according to claim 1, is characterized in that, described flexible brush (3) forms by aiming at the bristle lining up at least one row, and bristle has triangular-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757793.7U CN204419459U (en) | 2014-12-05 | 2014-12-05 | A kind of noise reduction lightning protection blade of wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757793.7U CN204419459U (en) | 2014-12-05 | 2014-12-05 | A kind of noise reduction lightning protection blade of wind-driven generator |
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| Publication Number | Publication Date |
|---|---|
| CN204419459U true CN204419459U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420757793.7U Expired - Fee Related CN204419459U (en) | 2014-12-05 | 2014-12-05 | A kind of noise reduction lightning protection blade of wind-driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454388A (en) * | 2014-12-05 | 2015-03-25 | 苏州汇诚智造工业设计有限公司 | Noise-reduction lightning-protection wind generator blade and manufacturing method thereof |
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2014
- 2014-12-05 CN CN201420757793.7U patent/CN204419459U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454388A (en) * | 2014-12-05 | 2015-03-25 | 苏州汇诚智造工业设计有限公司 | Noise-reduction lightning-protection wind generator blade and manufacturing method thereof |
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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: 20150624 Termination date: 20161205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |