CN210531071U - Lightning-protection bolt for fan blade - Google Patents
Lightning-protection bolt for fan blade Download PDFInfo
- Publication number
- CN210531071U CN210531071U CN201921544243.6U CN201921544243U CN210531071U CN 210531071 U CN210531071 U CN 210531071U CN 201921544243 U CN201921544243 U CN 201921544243U CN 210531071 U CN210531071 U CN 210531071U
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- lightning
- bolt
- diameter
- blade
- connecting part
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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
A lightning bolt for a fan blade comprises a bolt body, wherein the bolt body comprises a connecting part, a structure part and a lightning receiving part, the connecting part and the structure part are cylindrical, and the diameter of the connecting part is smaller than that of the structure part; the portion of dodging is the segment form, and the diameter that connects the portion of dodging is greater than the diameter of structural part, and the bottom that connects the portion of dodging is formed with the arc that is used for the blade to take shelter from thunder and dodge the face. The bolt is simple in structure, convenient to install and reliable, lightning generated by lightning striking the blade can be effectively guided, the connection quality of a lightning protection system of the blade is guaranteed, and the bolt meets requirements.
Description
Technical Field
The utility model relates to a bolt, especially a fan blade lightning bolt.
Background
The wind driven generator blade is the most basic and key part in the wind driven generator, and the good lightning protection design of the wind driven generator blade is a determining factor for ensuring the normal and stable operation of a unit, and is particularly important for wind driven generators in mountainous areas and on the sea.
In the prior art, the lightning protection installation of the blade is the weakest link in the whole lightning protection structure, so that the quality of the fan blade is ensured, and the quality requirement on the lightning protection connection of the blade of the wind driven generator is very high.
Disclosure of Invention
The utility model aims to solve the technical problem that to prior art not enough, provide a simple and convenient, the steady quality of preparation, can guarantee the lightning-arrest erection joint of blade fan blade lightning-arrest bolt that meets the requirements.
The technical problem to be solved by the utility model is realized through the following technical scheme. The utility model relates to a lightning bolt for fan blades, which comprises a bolt body, wherein the bolt body comprises a connecting part, a structure part and a lightning receiving part, the connecting part and the structure part are both cylindrical, and the diameter of the connecting part is smaller than that of the structure part; the portion of dodging is the segment form, and the diameter that connects the portion of dodging is greater than the diameter of structural part, and the bottom that connects the portion of dodging is formed with the arc that is used for the blade to take shelter from thunder and dodge the face.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above fan blade lightning bolt, all be provided with in the structural part with the external component be connected, fixed external screw thread.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above fan blade lightning-arrest bolt, connecting portion top spin has connect the self-locking nut who is convenient for with the punching press terminal and this body coupling of bolt of lightning-arrest wire branch line.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above fan blade lightning bolt, the structure portion top spin has connect the mounting nut of this bolt fixed mounting of being convenient for.
The technical problem to be solved by the utility model can be further realized through the following technical scheme, to above fan blade lightning bolt, the diameter of connecing sudden strain of a muscle portion is 40-60mm, and the diameter of structure portion is 25-30mm, and the diameter of connecting portion is 12-18 mm.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above fan blade lightning bolt, still the winding has the glass fiber protective layer in the structural part.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above fan blade lightning bolt, the bolt body adopts copper or aluminium system to make.
Compared with the prior art, the utility model discloses pre-buried in the blade mould before the blade shaping, then lay the structural material of blade, after the casing shaping, further fasten, fix through the mounting nut, avoid this bolt not hard up, then connect the punching press terminal of lightning-arrest wire branch line to the connecting portion through self-locking nut; thus, when in lightning stroke, the lightning generated by the lightning stroke is guided to the lightning-protection conducting wire by the conduction of the structure part and the connecting part through the lightning receiving surface of the lightning receiving part, so that the fan blade is prevented from being struck by the lightning. The bolt is simple in structure, convenient to install and reliable, lightning generated by lightning striking the blade can be effectively guided, the connection quality of a lightning protection system of the blade is guaranteed, and the bolt meets requirements.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the installation structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a lightning bolt for a fan blade comprises a bolt body 3, wherein the bolt body 3 comprises a connecting part 33, a structural part 32 and a lightning receiving part 31, the connecting part 33 and the structural part 32 are both cylindrical, and the diameter of the connecting part 33 is smaller than that of the structural part 32; the portion 31 that connects to dodge is the segment form, and the diameter that connects the portion 31 that dodges is greater than the diameter of structure portion 32, and the bottom that connects the portion 31 that dodges is formed with the arc that is used for the blade to take shelter from thunder and connects the face 11. The connecting part 33, the structure part 32 and the lightning receiving part 31 are integrally formed, the connecting part 33 is used for being connected with an external lightning conductor, the structure part 32 is embedded in the blade shell 2 mold 1 and integrally formed with the blade shell 2 so as to be connected with the blade shell 2 into a whole, the lightning receiving part 31 guides lightning strike lightning through the arc lightning receiving surface 11, transmits the generated lightning strike to the structure part 32, and transmits the lightning strike to the external lightning conductor through the connecting part 33 so as to avoid the lightning strike on the blade shell 2; the shrinkage pool is prefabricated on the casing mould, and its shape corresponds with lightning bolt's portion 31 that dodges to conveniently fix this lightning bolt is pre-buried in blade casing 2 mould 1.
The connecting part 33 and the structure part 32 are both provided with external threads which are connected and fixed with external parts.
The connecting part 33 is screwed with a self-locking nut 5 which is convenient for connecting the stamping terminal 6 of the lightning conductor branch line with the bolt body 3. The self-locking nut 5 is arranged to facilitate connection of the connecting portion 33 with the punch terminal 6 of an external lightning conductor branch line, and the lightning conductor branch line is connected with an external main lightning conductor through a parallel clamp or other modes to conduct lightning conduction generated by lightning stroke.
The utility model discloses a blade shell, including bolt body 2, structural part 32, mounting nut 4, bolt body 2, structural part 32 and mounting nut 4, the setting of mounting nut 4 has connect the mounting nut 4 of being convenient for this bolt fixed mounting on the top, and the setting of mounting nut 4 is convenient for carry out further fastening to structural part 32 and blade shell 2 in the bolt body 3 shaping is to blade shell 2, avoids bolt body 3 not hard up, simultaneously, paints the whole mounting nut 4 of adhesive seal after mounting nut 4 fastens, prevents that mounting nut 4 is not hard up.
The diameter of the lightning receiving part 31 is 40-60mm, the diameter of the structure part 32 is 25-30mm, and the diameter of the connecting part 33 is 12-18 mm. Preferably, the diameter of the lightning receptor 31 is 60mm, the diameter of the structure 32 is 30mm, and the diameter of the connection 33 is 15 mm.
A glass fiber protective layer 34 is also wrapped around the structural portion 32. The glass fiber protective layer 34 is formed by winding glass fibers, and before the bolt is embedded in the blade shell 2 mold 1, the glass fibers are wound on the structure part 32 to play an insulating and isolating role between the structure part 32 and the blade material.
The bolt body 3 is made of copper or aluminum, so that the cost is low and the conductivity is good.
The construction process on the blade is as follows:
firstly, winding glass fiber in an external thread area of the structure part 32, then embedding and fixing the lightning protection bolt in an embedded hole prefabricated on a blade shell 2 mould 1, and then paving a structural material of the blade shell 2 in the blade shell 2 mould 1, wherein the structural material comprises an outer structure layer 21, a protective layer 23, a core material 22 and an inner structure layer 24 in sequence; the protective layer 23 is made of biaxial cloth and integrally covers the end face of the core material and the molded surfaces at two sides within the range of 100-200 mm; after the shell is formed, the structure part 32 of the lightning bolt is fastened through the mounting nut 4, and the adhesive is coated to seal the whole mounting nut 4 so as to prevent the mounting nut 4 from loosening; finally, the punch terminal 6 of the lightning conductor branch is connected with the connecting part 33 of the lightning bolt through the self-locking nut 5, and the lightning conductor branch is connected with the main lightning conductor through a parallel clamp or other modes.
Claims (7)
1. The utility model provides a fan blade lightning bolt which characterized in that: the bolt comprises a bolt body, wherein the bolt body comprises a connecting part, a structure part and a lightning receiving part, the connecting part and the structure part are cylindrical, and the diameter of the connecting part is smaller than that of the structure part; the portion of dodging is the segment form, and the diameter that connects the portion of dodging is greater than the diameter of structural part, and the bottom that connects the portion of dodging is formed with the arc that is used for the blade to take shelter from thunder and dodge the face.
2. A wind turbine blade lightning bolt according to claim 1, wherein: and the connecting part and the structural part are both provided with external threads which are connected and fixed with an external part.
3. A wind turbine blade lightning bolt according to claim 2, wherein: and the connecting part is screwed with a self-locking nut which is convenient for connecting the stamping terminal of the lightning-arrest wire branch line with the bolt body.
4. A wind turbine blade lightning bolt according to claim 2, wherein: the structure part is screwed with a mounting nut which is convenient for the fixed mounting of the bolt.
5. A wind turbine blade lightning bolt according to claim 1, wherein: the diameter of the lightning receiving part is 40-60mm, the diameter of the structure part is 25-30mm, and the diameter of the connecting part is 12-18 mm.
6. A wind turbine blade lightning bolt according to claim 1, wherein: and a glass fiber protective layer is also wound on the structure part.
7. A wind turbine blade lightning bolt according to claim 1, wherein: the bolt body is made of copper or aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921544243.6U CN210531071U (en) | 2019-09-17 | 2019-09-17 | Lightning-protection bolt for fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921544243.6U CN210531071U (en) | 2019-09-17 | 2019-09-17 | Lightning-protection bolt for fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210531071U true CN210531071U (en) | 2020-05-15 |
Family
ID=70605511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921544243.6U Active CN210531071U (en) | 2019-09-17 | 2019-09-17 | Lightning-protection bolt for fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210531071U (en) |
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2019
- 2019-09-17 CN CN201921544243.6U patent/CN210531071U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 222069 west side of Dapu Road, Lianyungang Economic and Technological Development Zone, Lianyungang City, Jiangsu Province (south of Dongfang Avenue) Patentee after: Guoneng United Power Technology (Lianyungang) Co.,Ltd. Address before: 222000 No.88 Dapu Road, Lianyungang Economic and Technological Development Zone, Lianyungang City, Jiangsu Province Patentee before: Guodian United Power Technology (Lianyungang) Co.,Ltd. |
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| CP03 | Change of name, title or address |