CN108266335B - A kind of wind power plant blade lightning protection device - Google Patents

A kind of wind power plant blade lightning protection device Download PDF

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Publication number
CN108266335B
CN108266335B CN201711367136.6A CN201711367136A CN108266335B CN 108266335 B CN108266335 B CN 108266335B CN 201711367136 A CN201711367136 A CN 201711367136A CN 108266335 B CN108266335 B CN 108266335B
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CN
China
Prior art keywords
blade
arrester
lightning
conductive metal
metal sheet
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Application number
CN201711367136.6A
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Chinese (zh)
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CN108266335A (en
Inventor
张向东
许乔奇
孙兴
冯威
支文帅
王晶晶
乔阳阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUOYANG SUNRUI WIND TURBINE BLADE Ltd
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LUOYANG SUNRUI WIND TURBINE BLADE Ltd
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Priority to CN201711367136.6A priority Critical patent/CN108266335B/en
Publication of CN108266335A publication Critical patent/CN108266335A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D80/00Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/30Lightning protection
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06Rotors
    • F03D1/065Rotors characterised by their construction elements
    • F03D1/0675Rotors characterised by their construction elements of the blades
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

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  • 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

A kind of wind power plant blade lightning protection device, including wheel hub and multiple wind electricity blades, wind electricity blade includes the internal insulation shell for having cavity, lightning arrester includes blade tip arrester, blade arrester and conductive metal sheet, with the rosette and transporting component that blade root position is arranged in, blade tip arrester, blade arrester, conductive metal sheet and rosette are arranged on the outer surface of insulation shell, and blade arrester is mounted on conductive metal sheet;Transporting component includes connecting wire, metal tape and carbon brush, metal tape is annularly laid in the blade root position of wind electricity blade, and it is connect by connecting wire with rosette, carbon brush is fixed on wheel hub, the end of carbon brush is connected with ground line, and carbon brush can be when wind electricity blade rotates and the metal tape dynamic Contact of wind turbine blade root.The present invention can effectively prevent blade shell to be punctured by thunder and lightning, and long service life, high safety and reliability.

Description

A kind of wind power plant blade lightning protection device
Technical field
The present invention relates to wind electricity blade lightning-protecting engineering field, specifically a kind of blade of wind power plant is anti-to be hit Wear type lightning arrester.
Background technique
With the continuous development of wind power technology, Wind turbine tower height is continuously increased, and length of blade constantly lengthens, blower It is also risen with it by the probability being struck by lightning.The lightening arresting method of traditional wind electricity blade mainly installs arrester on blade, Metal lead wire is set in blade interior, guide line is connected to root of blade and is pierced by the lightning-arrest interface reconnection being connected on wheel hub Ground wire receives thunder and lightning, guide line conduction thunder and lightning eventually by arrester, thunder and lightning is gradually inducted into the earth.
This traditional lightning-arrest mode is primarily present following defect: 1, thunder and lightning flow path is to be drawn by the metal of blade interior Line, guidance thunder and lightning are conducted to greatly.Therefore lightning current insulated hull of metal lead wire in conductive process is breakdown frequent occurrence, in turn The case where blade interior arc discharge causes blade cavity to damage.Meanwhile blade interior is when being provided with metal lead wire, metal and thunder Also electric field induction can occur between electricity, to guide thunder and lightning from external non-arrester overlay area breakdown shell to cause blade Damage, causes huge economic loss.It 2, can be with leaf with the conducting wire that thunder interface is connect of leading in wheel hub in root of blade region It rotates when piece variable pitch, and rotation repeatedly, so that cable is easily destroyed, thunder and lightning cannot successfully conduct, and lead to lightning protection system It cannot smoothly play a role, blade is easy to be destroyed by lightning stroke, causes huge economic loss.
Currently, quite a few in wind electricity blade damage is since lightning stroke destroys.Therefore, improve and enhance in lightning-protection system The performance of lightning arrester is actually necessary to effectively prevent large-scale wind generating blade to be destroyed by lightning stroke.
Summary of the invention
That the object of the present invention is to provide a kind of installation settings is simple, not damaged blade structure, can effectively prevent blade shell Body is punctured by thunder and lightning, and the fan blade lightning arrester of long service life, high safety and reliability, come be effectively reduced wind electricity blade by The probability of lightning stroke.
The present invention is in order to solve the above technical problems, used technical solution is: a kind of wind power plant is kept away with blade Thunder device, including wheel hub and multiple wind electricity blades arranged on the hub, the wind electricity blade include one foliated Insulation shell has a cavity in the inside of the insulation shell, and the lightning arrester includes being arranged in wind power blade tip lightening The blade tip arrester at position, is arranged in the blade arrester and conductive metal sheet at blade position, and blade root position is arranged in Rosette and transporting component, wherein blade tip arrester, blade arrester, conductive metal sheet and rosette are arranged at absolutely On the outer surface of edge shell, blade arrester is mounted on conductive metal sheet, and blade tip arrester, blade arrester and round metal Disk is conductively connected with conductive metal sheet;
The transporting component includes connecting wire, metal tape and carbon brush, and metal tape is annularly laid in wind electricity blade Blade root position, and it is connect by connecting wire with rosette, the carbon brush is fixed on wheel hub, the end of carbon brush It is connected with ground line, the carbon brush can be when wind electricity blade rotates and the metal tape dynamic Contact of wind turbine blade root.
Preferably, the blade tip arrester is the metal block for being fixed on insulation shell blade tip position top, and the metal Block is connected on conductive metal sheet by riveting or bolted mode.
Preferably, the blade arrester is the sheet metal being fixed on conductive metal sheet outer surface, and the sheet metal It is fixed on conductive metal sheet by riveting or bolted mode.
Preferably, the conductive metal sheet is in long strip, and arranges along the length direction of insulation shell.
Preferably, the connecting wire is connect by Wiring nose and bolt with rosette.
Preferably, the number at least two of the blade arrester, and along insulation shell length direction with distribution.
Preferably, the blade root position of each wind electricity blade is fixedly installed a circumferential nonmetallic support frame, Metal tape is fixed on the nonmetallic support frame of the circumferential direction by bonding and riveting method.
Preferably, the connecting wire passes through metal bolts being mounted on metal tape and metal band connection.
Beneficial effects of the present invention:
Wind power plant blade lightning protection device of the invention, by the way that arrester and conductive gold is arranged in blade outer surface Belong to plate, lightning arrester is enable to connect into access, the reception and conduction of Lai Jinhang wind electricity blade thunder and lightning in blade exterior.It is this new The lightning arrester of type is not necessarily to be laid with metal lead wire in blade interior, and installation settings is simple and easy, also effectively prevents metal lead wire The occurrence of insulated hull is breakdown or internal arc electric discharge causes blade interior housing failure.Blade interior is without metal material Set-up mode also avoid metal blade interior generate electric field induction, thus greatly reduce the breakdown damage of blade shell A possibility that.Meanwhile the Dynamic link library mode of the lightning-arrest metal tape of wind turbine blade root and carbon brush connects instead of traditional wire type Connect mode.It no longer needs to connect the lightning-arrest interface in the lightning arrester and wheel hub on blade by conducting wire, avoids connecting wire It is damaged because wind electricity blade variable pitch rotates, preferably facilitates the lightning-arrest connection of wind electricity blade and wheel hub, enhance whole blower Lightning-arrest connection, improve the safety of lightning protection system entirety, reduce the probability that wind electricity blade is struck by lightning, device general safety Reliability is higher, and using effect is good.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the sectional view along A-A of Fig. 1;
Marked in the figure: 1, insulation shell, 2, cavity, 3, blade tip arrester, 4, blade arrester, 5, conductive metal sheet, 6, Rosette, 7, connecting wire, 8, metal bolts, 9, metal tape, 10, nonmetallic support frame, 11, carbon brush, 12, ground line.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention are described in further detail, are implemented below Example is not intended to limit the scope of the invention for illustrating the present invention.
As illustrated in fig. 1 and 2, a kind of wind power plant blade lightning protection device of the invention, including wheel hub and setting Multiple wind electricity blades on wheel hub, the wind electricity blade includes a foliated insulation shell 1, in the insulation shell 1 Inside there is a cavity 2, the lightning arrester is arranged on each wind electricity blade, constitutes one and completes lightning-arrest system It unites, the lightning arrester on each wind electricity blade includes the blade tip arrester 3 that wind power blade tip lightening position is arranged in, and is arranged in blade The blade arrester 4 and conductive metal sheet 5 at position, and the rosette 6 and transporting component at blade root position are set, wherein Blade tip arrester 3, blade arrester 4, conductive metal sheet 5 and rosette 6 are arranged on the outer surface of insulation shell 1, leaf Body arrester 4 is mounted on conductive metal sheet 5, and blade tip arrester 3, blade arrester 4 and rosette 6 are and conductive metal Plate 5 is conductively connected;The blade tip arrester 3 is the metal block for being fixed on 1 blade tip position top of insulation shell, and the metal block It is connected on conductive metal sheet 5 by riveting or bolted mode.Blade arrester 4 is to be fixed on conductive metal sheet 5 Sheet metal on outer surface, and the sheet metal is fixed on conductive metal sheet 5 by riveting or bolted mode.It is conductive Metal plate 5 is in long strip, and arranges along the length direction of insulation shell 1.The number at least two of blade arrester 4, and edge 1 length direction of insulation shell with distribution.
The transporting component includes connecting wire 7, metal tape 9 and carbon brush 11, and the blade root position of each wind electricity blade is equal It is fixedly installed a circumferential nonmetallic support frame 10, metal tape 9 is fixed on the non-of the circumferential direction by bonding and riveting method In metal supporting frames 10.It is fibre reinforced composites that the nonmetallic support frame, which prepares material, and nonmetallic support frame is Containing cavity structure.Metal tape 9 is connect by connecting wire 7 with rosette 6, and connecting wire 7 passes through Wiring nose and bolt and gold Belong to disk 6 to connect, connecting wire 7 is connect by a metal bolts 8 being mounted on metal tape 9 with metal tape 9.The carbon Brush 11 is fixed on wheel hub, and the end of carbon brush 11 is connected with ground line 12, and the carbon brush 11 can be rotated in wind electricity blade When and wind turbine blade root 9 dynamic Contact of metal tape.
Conductive metal sheet in the present invention is sheet metal made of being rolled as metal material, in long strip, and along exhausted The length direction of edge shell is arranged, is mounted on blade outer surface and is extended to blade root.The sectional area of conductive metal sheet is not less than 50mm2, conduction lightning current ability is not less than 200KA.Conductive metal sheet have effective lightning current conducting power without Blade interior installs metal lead wire, and conductive metal sheet is the unique passage conducted thunder and lightning and flow to blade root.
The blade tip arrester is the metal block for being fixed on insulation shell blade tip position top, and the metal block passes through riveting It connects or bolted mode is connected on conductive metal sheet.The blade arrester can be at one or many places, and Along insulation shell length direction with distribution.Blade arrester is sheet metal made of being machined as metal material, is passed through Riveting or bolted mode are fixed on conductive metal sheet.The sectional area of blade arrester is not less than 50mm2, conduct thunder Current capacity is not less than 200KA.Metal block, sheet metal or the conductive metal sheet is by copper, aluminium, stainless steel and other metal materials It is made.
Lightning arrester of the invention, the metal lead wire inside housings without conduction thunder and lightning, blade tip arrester and blade connect sudden strain of a muscle Device connects to forming grounded circuit in blade exterior with conductive metal sheet, avoids that thunder and lightning conduction path, leaf is arranged in blade interior It is reduced inside piece without metal material to avoid generating electric field induction formation thunder and lightning breakdown channel because blade interior is there are metal Inside uses a possibility that plain conductor is breakdown or blade shell breakdown damage.Avoid damage caused by lightning stroke destroys It loses, improves the safety of lightning protection system entirety.
Lightning arrester of the invention is after installing and using, and when variable pitch rotates, carbon brush is fixed on wheel hub wind electricity blade, gold Belonging to band can rotate with the rotation of wind electricity blade, and carbon brush and metal tape keep dynamic Contact.When wind electricity blade is subjected to lightning stroke, lead to It crosses conductive metal sheet and multiple arresters and receives thunder and lightning, then by rosette, connecting wire, metal bolts by thunder and lightning On conduction to metal tape, conducts finally by carbon brush to the ground line of hub interior, finally conduct thunder and lightning to greatly.
Lightning arrester of the invention is by changing reception and conduction of the wind electricity blade to thunder and lightning, the lightning-arrest system of enhancing root of blade The connection of system improves the lightning-arrest performance of wind electricity blade.The lightning arrester carries out connecing for thunder and lightning by arrester and conductive metal sheet Thunder and lightning is received and conducts, it is exhausted that the lightning-arrest rosette of blade tip arrester, blade arrester, conductive metal sheet and blade root is arranged at blade On the outer surface of edge shell, wherein blade arrester is mounted on conductive metal sheet, and blade tip arrester, blade arrester and leaf The lightning-arrest rosette of root is conductively connected with conductive metal sheet.In root of blade, change traditional lightning-arrest connection type, in blade Root increases an endless metal belt and carbon brush, replaces original pass through by the dynamic Contact connection type of metal tape and carbon brush The connection type that conducting wire is connected with the lightning-arrest interface of hub interior.Metal tape is lightning-arrest by connecting line and metal bolts and blade root simultaneously Rosette connects together, and entire lightning protection system is connected as an entirety.And root does not need conducting wire and the lightning-arrest interface of wheel hub Connected connection type also avoids damage of the blade in variable pitch rotation to conducting wire, reduces the biography of thunder and lightning caused by continuous damage Failure is led, to reduce a possibility that blade is destroyed by lightning stroke, is reduced because lightning stroke is lost caused by destroying.
Embodiment 1
1 surface of wind electricity blade insulation shell cover conductive metal sheet 5, wind electricity blade tip install blade tip arrester 3, It is uniformly distributed blade arrester 4 on blade, lightning-arrest rosette 6 is being installed close to blade root position, wherein blade arrester 4 is pacified On conductive metal sheet 5, blade tip arrester 3, blade root rosette 6 are bolted or rivet and conductive metal sheet 5 Connection;One nonmetallic support frame 10 is installed in leaf root part, the lightning-arrest metal tape of annular is bonded on the nonmetallic support frame 10 9, the lightning-arrest metal tape 9 of annular is connected by connecting wire 7, metal bolts 8 and blade root rosette 6, while the lightning-arrest metal of annular 11 dynamic Contact of band 9 and carbon brush, carbon brush 11 are fixed on wheel hub, and 12 are connected with ground line, the overall structure blade it is entire Lightning-arrest connection system.
Embodiment 2
According to the lightning arrester of Fig. 1 design installation, when variable pitch rotates, carbon brush 11 is fixed on wheel hub wind electricity blade, is kept away Thunder metal tape 9 can be rotated with the rotation of wind electricity blade, and carbon brush 11 and lightning-arrest metal tape 9 are kept in contact.Wind electricity blade is subjected to When lightning stroke, wind electricity blade receives thunder and lightning 5 by doing blade tip arrester 3, blade arrester 4, conductive metal sheet, passes through conductive metal The lightning-arrest rosette 6 of plate 5, blade root, connecting wire 7, metal bolts 8 and endless metal belt 9 gradually conduct thunder and lightning to blade root Portion, then by the Dynamic link library (vane propeller-changing does not influence to contact when rotating) of carbon brush 11 and the lightning-arrest metal tape 9 of blade root annular, by thunder Fax is directed at ground line 12, finally passes to thunder and lightning into the earth.
Above embodiments should not be construed as limitation of the invention, and the record of claim is subject in protection of the invention, It is any that the equivalent technical elements replacement made is said according to patent specification, all without departing from the protection scope of this patent.

Claims (7)

1. a kind of wind power plant blade lightning protection device, including wheel hub and multiple wind electricity blades arranged on the hub, The wind electricity blade includes a foliated insulation shell (1), has a cavity in the inside of the insulation shell (1) (2), it is characterised in that: the lightning arrester includes the blade tip arrester (3) that wind power blade tip lightening position is arranged in, and setting exists The blade arrester (4) and conductive metal sheet (5) at blade position, and rosette (6) and the transporting at blade root position are set Component, wherein blade tip arrester (3), blade arrester (4), conductive metal sheet (5) and rosette (6) are arranged at insulation On the outer surface of shell (1), blade arrester (4) is mounted on conductive metal sheet (5), and blade tip arrester (3), blade connect sudden strain of a muscle Device (4) and rosette (6) are conductively connected with conductive metal sheet (5), and the sectional area of the conductive metal sheet is not less than 50mm2
The transporting component includes connecting wire (7), metal tape (9) and carbon brush (11), and metal tape (9) is annularly laid in wind The blade root position of electric blade, and it is connect by connecting wire (7) with rosette (6), the carbon brush (11) fixed setting On wheel hub, the end of carbon brush (11) is connected with ground line (12), and the carbon brush (11) can rotate Shi Yufeng in wind electricity blade Metal tape (9) dynamic Contact of electric root of blade, the blade root position of each wind electricity blade is fixedly installed a circumferential direction Nonmetallic support frame (10), metal tape (9) is by bonding and riveting method is fixed on the nonmetallic support frame (10) of the circumferential direction On.
2. a kind of wind power plant blade lightning protection device according to claim 1, it is characterised in that: the blade tip Arrester (3) is the metal block for being fixed on insulation shell (1) blade tip position top, and the metal block is connected by riveting or bolt The mode connect is connected on conductive metal sheet (5).
3. a kind of wind power plant blade lightning protection device according to claim 1, it is characterised in that: the blade Arrester (4) is the sheet metal being fixed on conductive metal sheet (5) outer surface, and the sheet metal by riveting or is bolted Mode be fixed on conductive metal sheet (5).
4. a kind of wind power plant blade lightning protection device according to claim 1, it is characterised in that: the conduction Metal plate (5) is in long strip, and arranges along the length direction of insulation shell (1).
5. a kind of wind power plant blade lightning protection device according to claim 1, it is characterised in that: the connection Conducting wire (7) is connect by Wiring nose and bolt with rosette (6).
6. a kind of wind power plant blade lightning protection device according to claim 1, it is characterised in that: the blade connects The number at least two of device (4) is dodged, and is uniformly distributed along insulation shell (1) length direction.
7. a kind of wind power plant blade lightning protection device according to claim 1, it is characterised in that: the connection Conducting wire (7) is connect by a metal bolts (8) being mounted on metal tape (9) with metal tape (9).
CN201711367136.6A 2017-12-18 2017-12-18 A kind of wind power plant blade lightning protection device Active CN108266335B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201711367136.6A CN108266335B (en) 2017-12-18 2017-12-18 A kind of wind power plant blade lightning protection device

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CN108266335B true CN108266335B (en) 2019-11-22

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WO2023161180A1 (en) * 2022-02-25 2023-08-31 Siemens Gamesa Renewable Energy A/S Wind turbine rotor blade and wind turbine
EP3879091B1 (en) * 2020-03-13 2024-03-27 Siemens Gamesa Renewable Energy A/S Wind turbine blade assembly and method for manufacturing a wind turbine blade assembly

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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
CN112727711A (en) * 2021-01-04 2021-04-30 株洲时代新材料科技股份有限公司 Lightning protection device for wind driven generator blade
CN113958467B (en) * 2021-09-13 2023-04-18 中国船舶重工集团海装风电股份有限公司 Lightning protection lightning receiving combination device for wind turbine generator blade
CN114837881B (en) * 2022-04-28 2023-08-25 洛阳双瑞风电叶片有限公司 Corrosion-resistant and lightning-proof wind power blade
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CN202749789U (en) * 2012-04-16 2013-02-20 华锐风电科技(集团)股份有限公司 Lightning protection apparatus, blade assembly of wind turbine generator set and wind turbine generator set
DK3255276T3 (en) * 2016-06-09 2019-05-13 Siemens Gamesa Renewable Energy As Lightning protection system for a wind turbine
CN206458568U (en) * 2017-01-16 2017-09-01 张瑞佳 Fan blade lightning protection device with metal blade tip

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EP3879091B1 (en) * 2020-03-13 2024-03-27 Siemens Gamesa Renewable Energy A/S Wind turbine blade assembly and method for manufacturing a wind turbine blade assembly
WO2023161180A1 (en) * 2022-02-25 2023-08-31 Siemens Gamesa Renewable Energy A/S Wind turbine rotor blade and wind turbine

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