CN214145772U - Lightning protection assembly for wind power blade root - Google Patents
Lightning protection assembly for wind power blade root Download PDFInfo
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- CN214145772U CN214145772U CN202022702116.3U CN202022702116U CN214145772U CN 214145772 U CN214145772 U CN 214145772U CN 202022702116 U CN202022702116 U CN 202022702116U CN 214145772 U CN214145772 U CN 214145772U
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- lightning protection
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- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a lightning protection assembly for wind power blade root, which comprises a lightning protection ring, a cap-shaped glass fiber reinforced plastic washer, a connecting lug and a carbon brush, wherein the lightning protection ring is respectively connected with the connecting lug and the carbon brush, one end of the connecting lug, which is far away from the lightning protection ring, is connected with a copper wire at the middle part of a blade, the carbon brush is connected with a blade hub, the copper wire conducts lightning to the lightning protection ring through the connecting lug, and the lightning received by the lightning protection ring is conducted to the blade hub through the carbon brush; the lower terminal surface of cap type glass steel gasket bonds with the blade root mutually, cap type glass steel gasket is assembled by two identical half cap type glass steel gasket and forms, the lightning protection ring is formed by the semicircle ring welding of two relative settings, utilize the bolt to pass the semicircle ring in proper order, half cap type glass steel gasket back and nut threaded connection are in order to be connected semicircle ring and half cap type glass steel gasket, the lightning protection ring is not emerged at the bolt top, can guarantee the simple firm bonding of lightning protection subassembly on the surface of blade root casing when guaranteeing to lead thunder nature.
Description
Technical Field
The utility model relates to a wind-powered electricity generation blade lightning protection system field, specific lightning protection subassembly is used to wind-powered electricity generation blade root that says so.
Background
Wind energy is used as renewable clean energy, and wind power generation is more and more concerned at home and abroad. Along with the development of wind power technology, the height of the fan is continuously increased along with the increase of the height of the hub and the diameter of the impeller, and the risk of lightning stroke of the fan is increased more and more. Among them, the cost of labor for maintenance of the fan components damaged by lightning strike, the cost of reducing the power generation amount in the downtime, and the like are very expensive. Therefore, higher requirements are put on the lightning protection technology of the wind power blade.
Generally, wind-powered electricity generation blade's basic lightning protection device mainly includes the aluminium point of blade point portion, the arrester at blade body middle part and the stainless steel lightning protection ring of blade root portion, the arrester at blade point portion aluminium point and middle part is at the installation of compound die process, because they are small, it is comparatively convenient that the installation is fixed, stainless steel lightning protection ring generally uses the adhesive direct bonding to the blade root portion surface, adhesive fracture phenomenon appears easily in the unit operation in the condition of this kind of direct bonding, and then can take place droing of lightning protection ring, finally lead to whole wind-powered electricity generation blade lightning protection system to be destroyed.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough among the prior art, the utility model provides a wind-powered electricity generation lightning protection subassembly for root of blade can guarantee simple firm bonding on the surface of root of blade casing when guaranteeing to lead the thunder nature.
In order to achieve the above object, the utility model discloses a concrete scheme does:
a lightning protection assembly for the root of a wind power blade comprises a lightning protection ring, a cap-shaped glass fiber reinforced plastic gasket, a connecting lug and a carbon brush, wherein the lightning protection ring is respectively connected with the connecting lug and the carbon brush; the lower terminal surface of cap type glass steel gasket bonds with the blade root mutually, cap type glass steel gasket is assembled by two identical half cap type glass steel gasket and forms, the lightning protection ring is formed by the semicircle ring welding of two relative settings, and two semicircle rings are fixed in respectively on the half cap type glass steel gasket that corresponds, utilize the bolt to pass in proper order behind semicircle ring, the half cap type glass steel gasket with nut threaded connection in order to be connected semicircle ring and the half cap type glass steel gasket, the lightning protection ring is not emerged at the bolt top.
Further, half cap type glass steel gasket includes path semicircle ring portion, half drum portion and major diameter semicircle ring portion from last to down in proper order, and the external diameter of path semicircle ring portion, the internal diameter of semicircle drum portion and the internal diameter of major diameter semicircle ring portion all equal, be equipped with the through-hole that supplies the bolt to pass on the path semicircle ring portion, major diameter semicircle ring portion bottom bonds mutually through the adhesive with the blade root.
Further, an arc-shaped base plate is arranged at the bottom of the small-diameter semicircular ring part, and the bolt sequentially penetrates through the semicircular ring, the small-diameter semicircular ring part and the arc-shaped base plate and then is in threaded connection with the nut.
Furthermore, the connecting lug is in a fold line shape, and one end of the connecting lug, which is far away from the lightning protection ring, is connected with the copper nose at the end part of the copper wire through a fastener.
Furthermore, each semicircular ring is provided with at least one inner counter bore for a bolt to pass through.
Further, the bolt is an inner hexagonal countersunk head bolt.
Furthermore, the lightning protection ring is made of stainless steel.
Has the advantages that:
1. the lightning protection component comprises a lightning protection ring, a cap-shaped glass fiber reinforced plastic washer, a connecting lug and a carbon brush, wherein (1) a copper wire in the middle of the blade transmits lightning to the lightning protection ring through the connecting lug, the lightning received by the lightning protection ring is transmitted to the blade hub, the main shaft and the tower barrel through the carbon brush, and finally the lightning is introduced into the ground through a down lead, so that the lightning can be simply transmitted to the ground through the lightning protection component; (2) the lightning protection ring is fixed on the cap type glass fiber reinforced plastic gasket by using the bolt, and the lightning protection ring and the cap type glass fiber reinforced plastic gasket are integrally adhered to the outer surface of the shell at the root part of the blade, so that the installation quality of the lightning protection assembly is effectively improved, the lightning protection assembly is prevented from falling off, and the process operation is relatively convenient. Meanwhile, the shape following performance of the lightning protection ring can be effectively controlled; (3) the lightning protection ring is not protruded from the top of the bolt, so that the carbon brush can not interfere with the bolt when in contact with the lightning protection ring, and the damage of the carbon brush is avoided.
2. The utility model provides a lightning protection subassembly simple structure, suitability are strong, as long as the mechanism that involves the lightning protection of blade root all can utilize this lightning protection subassembly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of the lightning protection assembly of the present invention.
Fig. 2 is a schematic structural diagram of a lightning protection ring.
Fig. 3 is a schematic structural view of a cap type glass fiber reinforced plastic gasket.
Fig. 4 is a schematic structural view of the arc-shaped backing plate.
The device comprises graphic marks, 1, a copper wire, 2, a copper nose, 3, a fastener, 4, a connecting lug, 5, a lightning protection ring, 6, a bolt, 7, a cap type glass fiber reinforced plastic gasket, 8, an arc-shaped backing plate, 9, a nut, 10, a carbon brush, 11, a blade root, 12, an inner counter bore, 13 and a through hole.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following specific embodiments, and it should be understood that the described embodiments are only some embodiments, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A lightning protection assembly for the root of a wind power blade refers to a picture 1 and comprises a lightning protection ring 5, a cap-shaped glass fiber reinforced plastic gasket 7, a connecting lug 4 and a carbon brush 10, wherein the lightning protection ring 5 is respectively connected with the connecting lug 4 and the carbon brush 10, one end of the connecting lug 4, far away from the lightning protection ring 5, is connected with a copper wire 1 playing a lightning guiding role in the middle of the blade, one end of the carbon brush 10, far away from the lightning protection ring 5, is connected with a blade hub, the copper wire 1 conducts lightning to the lightning protection ring 5 through the connecting lug 4, and the lightning received by the lightning protection ring 5 is conducted to the blade hub through the carbon brush 10; the lower end face of the cap-shaped glass fiber reinforced plastic gasket 7 is bonded with the blade root 11, please refer to fig. 3, the cap-shaped glass fiber reinforced plastic gasket 7 is formed by assembling two identical half cap-shaped glass fiber reinforced plastic gaskets, the two half cap-shaped glass fiber reinforced plastic gaskets are formed by adopting a vacuum infusion process, please refer to fig. 2, the lightning protection ring 5 is formed by welding two half rings which are oppositely arranged, and the lightning protection ring 5 is arranged into the two half rings, so that the shape following performance of the lightning protection ring 5 can be effectively controlled. Two semicircle rings are fixed in respectively on the half cap type glass steel gasket that corresponds, utilize bolt 6 to pass in proper order behind semicircle ring, the half cap type glass steel gasket with nut 9 threaded connection in order to be connected semicircle ring and half cap type glass steel gasket, lightning protection ring 5 is not emerged at 6 tops of bolt for during the contact of carbon brush 10 with lightning protection ring 5, can not take place to interfere with bolt 6, can guarantee the good contact of carbon brush 10 and lightning protection ring 5.
Referring to fig. 2, the half-cap glass fiber reinforced plastic gasket includes, from top to bottom, a small-diameter semicircular portion, a half-cylinder portion, and a large-diameter semicircular portion in sequence, the outer diameter of the small-diameter semicircular portion, the inner diameter of the half-cylinder portion, and the inner diameter of the large-diameter semicircular portion are all equal, a through hole 13 for a bolt 6 to pass through is formed in the small-diameter semicircular portion, and the bottom of the large-diameter semicircular portion is bonded to the blade root 11 through an adhesive. Because the material of root of blade 11 also is glass steel, it is firm to use the bonding agent bonding back to bond between cap type glass steel gasket 7 and the root of blade 11, through control adhesive thickness, can guarantee that the adhesive fracture phenomenon can not take place between this lightning protection subassembly and the root of blade 11.
Referring to fig. 1 and 4, an arc-shaped backing plate 8 is arranged at the bottom of the small-diameter circular ring portion, and the bolt 6 sequentially penetrates through the semicircular ring, the small-diameter semicircular ring portion and the arc-shaped backing plate 8 and then is in threaded connection with a nut 9.
The connecting lug 4 is in a fold line shape, and one end of the connecting lug 4, which is far away from the lightning protection ring 5, is connected with the copper nose 2 at the end part of the copper wire 1 through a fastener 3.
Each semicircular ring is provided with at least one inner counter bore 12 for the bolt 6 to pass through. In detail, referring to fig. 2, the number of the inner counterbores 12 of each semicircular ring is two.
In detail, the bolt 6 is a hexagon socket countersunk head bolt.
Wherein, the material of lightning protection ring 5 is stainless steel.
As shown in fig. 1, the installation method of the lightning protection assembly is as follows: the semicircular ring is placed on the upper end face of the half-cap type glass fiber reinforced plastic gasket, after the periphery of the semicircular ring is aligned and fixed, an electric drill penetrates through the inner counter bore 12 to form a through hole 13 in the half-cap type glass fiber reinforced plastic gasket, an inner hexagonal counter bore bolt sequentially penetrates through the inner counter bore 12, the through hole 13 and the arc-shaped gasket 8, the nut 9 is screwed, the semicircular ring and the half-cap type glass fiber reinforced plastic gasket are fastened into a whole, and the other semicircular ring and the half-cap type glass fiber reinforced plastic gasket are fastened into a whole by adopting the method. Coating an adhesive at the bottoms of the two half-cap type glass fiber reinforced plastic gaskets, adhering the two half-cap type glass fiber reinforced plastic gaskets to the root part 11 of the blade in a seamless or basically seamless state, welding the two semicircular rings at the interface part to form the lightning protection ring 5 after the adhesive is cured, and polishing the welding part to be flat and smooth. The connecting lug 4 is welded to the side face of the lightning protection ring 5, the copper nose 2 is installed at the end part of the copper wire 1 extending out of the middle part of the blade, the copper nose 2 and the connecting lug 4 are fixed through the fastening piece 3, and the carbon brush 10 is connected with the lightning protection ring 5.
The foregoing is merely a preferred embodiment of the invention and is not to be construed as limiting the invention in any way. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a wind-powered electricity generation lightning protection subassembly for blade root which characterized in that: the lightning protection device comprises a lightning protection ring (5), a cap-shaped glass fiber reinforced plastic gasket (7), a connecting lug (4) and a carbon brush (10), wherein the lightning protection ring (5) is respectively connected with the connecting lug (4) and the carbon brush (10), one end, far away from the lightning protection ring (5), of the connecting lug (4) is connected with a copper wire (1) playing a role of guiding lightning in the middle of a blade, one end, far away from the lightning protection ring (5), of the carbon brush (10) is connected with a blade hub, the copper wire (1) conducts the lightning to the lightning protection ring (5) through the connecting lug (4), and the lightning received by the lightning protection ring (5) is conducted to the blade hub through the carbon brush (10); the lower terminal surface of cap type glass steel gasket (7) bonds mutually with blade root (11), cap type glass steel gasket (7) are assembled by two identical half cap type glass steel gasket and are formed, lightning protection ring (5) are formed by the semicircle ring welding of two relative settings, and two semicircle rings are fixed in respectively on the half cap type glass steel gasket that corresponds, utilize bolt (6) to pass in proper order behind semicircle ring, the half cap type glass steel gasket with nut (9) threaded connection in order to be connected semicircle ring and the half cap type glass steel gasket, bolt (6) top does not emerge lightning protection ring (5).
2. The lightning protection assembly for the root of the wind power blade as recited in claim 1, wherein: half cap type glass steel washer is from last to including path semicircle ring portion, half drum portion and big footpath semicircle ring portion down in proper order, and the external diameter of path semicircle ring portion, the internal diameter of semicircle drum portion and the internal diameter of big footpath semicircle ring portion all equal, be equipped with through-hole (13) that supply bolt (6) to pass on the path semicircle ring portion, big footpath semicircle ring portion bottom bonds through the adhesive with blade root (11).
3. The lightning protection assembly for the root of the wind power blade as recited in claim 2, wherein: the bottom of the small-diameter semicircular ring part is provided with an arc-shaped base plate (8), and the bolt (6) sequentially penetrates through the semicircular ring, the small-diameter semicircular ring part and the arc-shaped base plate (8) and then is in threaded connection with the nut (9).
4. The lightning protection assembly for the root of the wind power blade as recited in claim 1, wherein: the connecting lug (4) is in a fold line shape, and one end of the connecting lug (4) far away from the lightning protection ring (5) is connected with the copper nose (2) at the end part of the copper wire (1) through a fastener (3).
5. The lightning protection assembly for the root of the wind power blade as recited in claim 1, wherein: each semicircular ring is provided with at least one inner counter bore (12) for the bolt (6) to pass through.
6. The lightning protection assembly for the root of the wind power blade as recited in claim 1, wherein: the bolt (6) is an inner hexagonal countersunk head bolt.
7. The lightning protection assembly for the root of the wind power blade as recited in claim 1, wherein: the lightning protection ring (5) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022702116.3U CN214145772U (en) | 2020-11-20 | 2020-11-20 | Lightning protection assembly for wind power blade root |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022702116.3U CN214145772U (en) | 2020-11-20 | 2020-11-20 | Lightning protection assembly for wind power blade root |
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| Publication Number | Publication Date |
|---|---|
| CN214145772U true CN214145772U (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022702116.3U Active CN214145772U (en) | 2020-11-20 | 2020-11-20 | Lightning protection assembly for wind power blade root |
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| CN (1) | CN214145772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483335A (en) * | 2020-11-20 | 2021-03-12 | 江苏双瑞风电叶片有限公司 | Lightning protection assembly for wind power blade root and installation method thereof |
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2020
- 2020-11-20 CN CN202022702116.3U patent/CN214145772U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483335A (en) * | 2020-11-20 | 2021-03-12 | 江苏双瑞风电叶片有限公司 | Lightning protection assembly for wind power blade root and installation method thereof |
| CN112483335B (en) * | 2020-11-20 | 2024-04-12 | 江苏双瑞风电叶片有限公司 | Lightning protection assembly for wind power blade root and installation method thereof |
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