CN116624346A - Lightning protection system for offshore carbon fiber wind power blade - Google Patents
Lightning protection system for offshore carbon fiber wind power blade Download PDFInfo
- Publication number
- CN116624346A CN116624346A CN202310579960.7A CN202310579960A CN116624346A CN 116624346 A CN116624346 A CN 116624346A CN 202310579960 A CN202310579960 A CN 202310579960A CN 116624346 A CN116624346 A CN 116624346A
- Authority
- CN
- China
- Prior art keywords
- lightning protection
- carbon fiber
- blade
- lightning
- protection system
- 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.)
- Pending
Links
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 41
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 41
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 81
- 229910052751 metal Inorganic materials 0.000 claims abstract description 81
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- 240000007182 Ochroma pyramidale Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/30—Lightning protection
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention discloses an offshore carbon fiber wind power blade lightning protection system which comprises a metal net paved on the surface of a wind power blade main beam, a grounding copper net assembly, a blade root lightning protection assembly and a lightning receptor; the grounding copper net assembly comprises a lap joint metal net and a metal disc welded on the lap joint metal net, and the lap joint metal net and the metal net are arranged in a fitting way; the blade root lightning protection component comprises a base and a down conductor, the lightning receptor is arranged on the metal disc and comprises a screw rod, and the screw rod penetrates through the metal disc to be connected with the base; one end of the down lead is connected with the base, and the other end of the down lead is connected with a complete machine lightning protection system of the wind driven generator; according to the lightning protection system for the carbon fiber wind power blade, the metal net is covered on the outer surface of the carbon fiber main beam, the carbon fiber main beam is protected, lightning is received and conducted through the metal net, the lightning current is conducted from the metal net to the lightning protection system of the whole wind power generator, the wind power blade achieves the lightning protection effect, the pneumatic performance of the blade is not affected, and the large current is conducted.
Description
Technical Field
The invention relates to the technical field of lightning protection systems, in particular to a lightning protection system for an offshore carbon fiber wind power blade.
Background
The construction of tunnel can effectively strengthen traffic convenience, and marine blade is because of the high position of body, and does not have the shelter from the thing around, is liable to suffer the thunderbolt when thunderbolt weather. Moreover, the offshore blade is generally a large-sized blade, and carbon fiber materials with light weight and excellent performance are mostly adopted to reduce the weight of the blade. The carbon fiber blade is a conductor and is easy to strike, but the carbon fiber is low in conductivity and poor in heat conductivity, and cannot withstand lightning strike with high current and strong voltage to damage. Therefore, there is a need to install a reliable and efficient lightning protection system on the blade to avoid lightning strike damage.
Unlike the lightning protection system of common blade, the lightning protection system with metal net is used in the carbon fiber blade, and the metal net is laid on the surface of the blade and covers the whole carbon fiber, and then connected with the main wire through the down lead. When the blade is struck by lightning, current can be conducted to the main lead through the surface metal net and then conducted to the lightning protection system of the whole fan. However, in the actual production process of the blade, the contact surface of the metal mesh connected with the down conductor is smaller, so that the reliability is lower, the contact resistance is large, and the 200KA high-current conduction cannot be met. Meanwhile, the lightning receptor of the blade cannot be effectively connected with the metal net, so that the lightning damage risk is increased.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the offshore carbon fiber wind power blade lightning protection system capable of effectively conducting large current.
In order to solve the technical problems, the invention adopts the following technical scheme:
a lightning protection system of an offshore carbon fiber wind power blade comprises a metal net paved on the surface of a main beam of the wind power blade, a grounding copper net assembly, a blade root lightning protection assembly and a lightning arrester; the grounding copper mesh assembly comprises a lap joint metal mesh and a metal disc welded on the lap joint metal mesh, and the lap joint metal mesh and the metal mesh are arranged in a fitting way; the blade root lightning protection assembly comprises a base and a down conductor, the lightning receptor is arranged on the metal disc and comprises a screw rod, and the screw rod penetrates through the metal disc to be connected with the base; one end of the down lead is connected with the base, and the other end of the down lead is connected with a complete machine lightning protection system of the wind driven generator.
As a further improvement of the above technical scheme:
the wind power blade main beam is a carbon fiber main beam, and the metal net covers the whole carbon fiber main beam and the blade tip; and a layer of continuous felt is laid on the surface of the metal net.
The blade root lightning protection assembly is arranged at the blade root of the wind power blade.
The wind power blade comprises a shell, the carbon fiber main beam is positioned inside the shell, and the down conductor is poured or adhered to the root of a web plate in the shell.
And each connecting part of the blade root lightning protection assembly is wrapped with an insulating sleeve.
The lightning receptor comprises a flange, and the flange is attached to the metal disc.
The size of the screw is not less than 35mm.
Compared with the prior art, the invention has the advantages that:
according to the offshore carbon fiber wind power blade lightning protection system, the metal net is covered on the outer surface of the carbon fiber main beam, so that the carbon fiber main beam is protected, current is received and conducted through the metal net, the metal disc, the lightning receptor, the screw and the base are lapped, the blades, the metal net and the wires of the whole lightning protection system are reliably connected through the grounding copper net assembly and the lightning receptor, a conductive path is formed, the conduction of lightning current from the metal net to the whole lightning protection system of the wind driven generator is realized, the wind power blade achieves the lightning protection effect, and the structure is compact; according to the invention, through overlapping arrangement of the lap joint metal nets of the grounding copper net assembly and the metal nets, the conduction contact area is increased, the abrupt change degree of the resistor from the metal net to the lead is reduced, so that in the process of conducting lightning current from the metal net to the down conductor, the damage of the lightning current to the metal net in the area near the metal belt connection position is reduced, the pneumatic performance of the blade is not influenced, the large current conduction is realized, and the positioning precision requirement during the installation of the lightning receptor is reduced.
Drawings
FIG. 1 is a schematic plan view of an offshore carbon fiber wind turbine blade lightning protection system of the present invention deployed on a blade.
Fig. 2 is an enlarged schematic view of the ground copper wire assembly of fig. 1 according to the present invention.
FIG. 3 is a schematic cross-sectional view of a grounded copper mesh assembly according to the present invention.
The reference numerals in the drawings denote:
101. a carbon fiber main beam; 102. a metal mesh; 103. a grounded copper mesh assembly; 201. lapping the metal net; 202. a metal plate; 203. a lightning receptor; 204. a base; 205. a down lead; 206. sandwich structure.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
FIGS. 1-3 illustrate one embodiment of an offshore carbon fiber wind turbine blade lightning protection system of the invention, comprising a metal mesh 102, a grounded copper mesh assembly 103, a blade root lightning protection assembly, and a lightning receptor 203; the wind power blade comprises a shell and a carbon fiber main beam 101, the carbon fiber main beam 101 is positioned in the shell, a metal net 102 covers the whole carbon fiber main beam 101 and a blade tip, a grounding copper assembly is arranged on the metal net 102, the grounding copper assembly 103 comprises a lap joint metal net 201 and a metal disc 202 welded on the lap joint metal net 201 through a welding tin sheet, the lap joint metal net 201 is in joint arrangement with the metal net 102, so that the contact area of the lap joint metal net 201 and the metal net 102 is increased, and the abrupt change degree of resistance from the metal net 102 to a wire is reduced; the blade root lightning protection assembly comprises a base 204 and a down conductor 205, the lightning receptor 203 is arranged on the metal disc 202, the lightning receptor 203 comprises a screw rod, and the screw rod penetrates through the metal disc 202 and is connected with the base 204; one end of the down wire 205 is connected with the base 204, and the other end is connected with the whole lightning protection system of the wind driven generator. According to the offshore carbon fiber wind power blade lightning protection system, the metal net 102 is covered on the outer surface of the carbon fiber main beam 101, so that the carbon fiber main beam 101 is protected, current is received and conducted through the metal net 102, the metal net 201, the metal disc 202, the lightning receptor 203, the screw and the base 204 are lapped, the blades, the metal net 102 and the wires of the whole lightning protection system are reliably connected through the grounding copper net assembly 103 and the lightning receptor, a conductive path is formed, the conduction of lightning current from the metal net 102 to the whole lightning protection system of the wind power generator is realized, the wind power blade achieves the lightning protection effect, and the structure is compact; according to the invention, through overlapping arrangement of the lap joint metal net 201 and the metal net 102 of the grounding copper net assembly 103, the conduction contact area is increased, the abrupt change degree of the resistance from the metal net 102 to the lead is reduced, so that in the process of conducting lightning current from the metal net 102 to the down conductor 205, the damage of the lightning current to the metal net 102 in the area near the metal belt connection position is reduced, the pneumatic performance of the blade is not influenced, the conduction of high current is realized, and the positioning precision requirement of the lightning receptor 203 during installation is reduced.
In this embodiment, the metal mesh 102 covers the whole carbon fiber main beam 101 and the blade tip, protects the carbon fiber main beam 101 from lightning damage, and a layer of continuous felt is laid on the surface of the metal mesh 102, so that better blades of the metal mesh 102 can form a whole.
In this embodiment, the blade root lightning protection subassembly is installed in wind-powered electricity generation blade's blade root department, is convenient for arrange the wire, also can reduce the risk of directly being hit by the thunder and lightning.
In this embodiment, the down conductor 205 is poured or adhered on the root of the web in the housing, which can avoid the confusion of the wires of the wind power blade in the working process, and is convenient for smooth conduction of lightning current and convenient for subsequent maintenance.
In this embodiment, each junction of blade root lightning protection subassembly parcel has insulating cover.
In this embodiment, the lightning receptor 203 includes a flange, which is attached to the metal plate 202, so as to facilitate efficient conduction of current.
In this embodiment, the size of the screw is not less than 35mm to ensure a sufficient contact area and smooth conduction.
In this embodiment, the sandwich structure 206 belongs to a blade foundation structure, and is made of glass fiber reinforced plastic, intermediate balsa wood or PVC materials on the upper and lower surfaces.
While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (7)
1. An offshore carbon fiber wind power blade lightning protection system is characterized in that: the lightning protection device comprises a metal net (102), a grounding copper net assembly (103), a blade root lightning protection assembly and a lightning receptor (203) which are paved on the surface of a main beam of a wind power blade; the grounding copper mesh assembly (103) comprises a lap metal mesh (201) and a metal disc (202) welded on the lap metal mesh (201), wherein the lap metal mesh (201) is in fit arrangement with the metal mesh (102); the blade root lightning protection assembly comprises a base (204) and a down conductor (205), the lightning receptor (203) is arranged on the metal disc (202), the lightning receptor (203) comprises a screw rod, and the screw rod penetrates through the metal disc (202) to be connected with the base (204); one end of the down wire (205) is connected with the base (204), and the other end is connected with a complete machine lightning protection system of the wind driven generator.
2. An offshore carbon fiber wind turbine blade lightning protection system according to claim 1, wherein: the wind power blade main beam is a carbon fiber main beam (101), and the metal net (102) covers the whole carbon fiber main beam (101) and the blade tip; a layer of continuous felt is laid on the surface of the metal net (102).
3. An offshore carbon fiber wind turbine blade lightning protection system according to claim 1, wherein: the blade root lightning protection assembly is arranged at the blade root of the wind power blade.
4. An offshore carbon fiber wind turbine blade lightning protection system according to claim 2, wherein: the wind power blade comprises a shell, the carbon fiber main beam (101) is located inside the shell, and the down conductor (205) is poured or adhered to the root of a web plate in the shell.
5. An offshore carbon fiber wind turbine blade lightning protection system according to claim 1, wherein: and each connecting part of the blade root lightning protection assembly is wrapped with an insulating sleeve.
6. An offshore carbon fiber wind turbine blade lightning protection system according to claim 1, wherein: the lightning receptor (203) comprises a flange, and the flange is attached to the metal disc (202).
7. An offshore carbon fiber wind turbine blade lightning protection system according to claim 1, wherein: the size of the screw is not less than 35mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023103761605 | 2023-04-10 | ||
| CN202310376160 | 2023-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116624346A true CN116624346A (en) | 2023-08-22 |
Family
ID=87620809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310579960.7A Pending CN116624346A (en) | 2023-04-10 | 2023-05-22 | Lightning protection system for offshore carbon fiber wind power blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116624346A (en) |
-
2023
- 2023-05-22 CN CN202310579960.7A patent/CN116624346A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101655071B (en) | Wind turbine lightning protection system | |
| EP2798206B1 (en) | A wind turbine blade and method of manufacturing a wind turbine blade | |
| JP4695482B2 (en) | Windmill blade lightning protection method and lightning protection device, wind power generation device lightning protection method and lightning protection device | |
| US9041410B2 (en) | Wind turbine blade with lightning protection system | |
| CN206636708U (en) | A kind of blade lightning protection structures of wind power generating set | |
| US20090246025A1 (en) | Wind turbine protection | |
| WO2013007267A1 (en) | A wind turbine blade | |
| JP2009030597A6 (en) | Wind turbine protection | |
| JP2009030597A (en) | Wind turbine protection | |
| CN107147007B (en) | A kind of lightning arrester and lightning-protection type electric pole | |
| CN101207270A (en) | Wind power generation lightning protection system | |
| JP7440840B2 (en) | wind power generation equipment | |
| CN210738745U (en) | Lightning protection system for blade of wind generating set | |
| CN116624346A (en) | Lightning protection system for offshore carbon fiber wind power blade | |
| CN111237124B (en) | System integrating wind power blade leading edge protection and lightning stroke protection | |
| WO2021180389A1 (en) | Wind turbine blade assembly and method for manufacturing | |
| CN108223305B (en) | Electrode lightning receiving device for wind turbine generator blade | |
| CN214998043U (en) | Lightning stroke protection structure of wind power blade | |
| CA2803751C (en) | Lightning protection structure of blade for wind power generation | |
| CN114909254A (en) | Wind power blade and forming method | |
| CN213692650U (en) | Lightning protection engineering is with building lightning rod unable adjustment base | |
| CN205277719U (en) | Special lightning rod device of wind generating set cabin cover | |
| CN209818222U (en) | Wind generating set's anti-thunder type blade that prevents frostbite | |
| CN208970246U (en) | Anti- bird grading ring | |
| CN217558472U (en) | A ground protection installation component for wind generating set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |