CN113339209B - Wind-powered electricity generation blade lightning protection system and wind-powered electricity generation blade - Google Patents
Wind-powered electricity generation blade lightning protection system and wind-powered electricity generation blade Download PDFInfo
- Publication number
- CN113339209B CN113339209B CN202110615443.1A CN202110615443A CN113339209B CN 113339209 B CN113339209 B CN 113339209B CN 202110615443 A CN202110615443 A CN 202110615443A CN 113339209 B CN113339209 B CN 113339209B
- Authority
- CN
- China
- Prior art keywords
- blade
- carbon fiber
- fiber cloth
- protection system
- lightning protection
- 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.)
- Active
Links
- 230000005611 electricity Effects 0.000 title description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 92
- 239000004917 carbon fiber Substances 0.000 claims abstract description 92
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000004744 fabric Substances 0.000 claims abstract description 86
- 239000002184 metal Substances 0.000 claims abstract description 44
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 239000004020 conductor Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 5
- 229910052799 carbon Inorganic materials 0.000 claims 5
- 239000000835 fiber Substances 0.000 claims 5
- 238000000034 method Methods 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 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 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 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
-
- 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
-
- 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
- F03D1/0641—Rotors characterised by their aerodynamic shape of the blades of the section profile of the blades, i.e. aerofoil profile
-
- 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- 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
-
- 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
Abstract
The invention discloses a wind power blade lightning protection system and a wind power blade, comprising a carbon fiber cloth layer, at least one layer of metal belt and a down conductor, wherein the carbon fiber cloth layer covers the surface of a blade shell, the carbon fiber cloth layer conducts lightning to the metal belt, and the metal belt is connected with the down conductor through a wire. Wind blades comprise the lightning protection system of the invention. According to the lightning protection system, the carbon fiber cloth layer serves as a conductor and a bearing structure, so that the weight of the lightning protection system is reduced, meanwhile, the blades can be effectively protected, and the weight of the wind power blade is reduced.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a wind power blade lightning protection system and a wind power blade.
Background
The wind driven generator mainly captures wind energy by wind power blades, the length of the wind power blades directly influences the wind energy capturing capacity of the wind driven generator and the output power of a wind driven generator set, and the wind power blades are longer and longer in demand for performance improvement. After the blade is prolonged, the weight can be exponentially increased, and the gravity center can also shift towards the blade tip, so that the gravity fatigue load and the centrifugal load are obviously increased, the reliability of the blade and the unit is reduced, and the cost is increased. Therefore, the promotion of the blade family extension design technique must achieve the weight reduction of the blade.
At present, wind driven generator blades all contain lightning protection system, and lightning protection system mainly comprises lightning receptor and the inside wire of blade body that sets up in the blade surface, and all lightning receptor are connected with the wire, and the wire sets up the interface with the complete machine in blade root department, and lightning receptor receives thunder and is connected to the lightning protection system of complete machine through the wire to avoid blade body glass steel to suffer the thunderbolt. The traditional lightning protection system comprises copper wires, glass fiber cloth for fixing the copper wires, a copper base, a glass fiber reinforced plastic bracket, a lightning arrester, adhesive glue and the like, and has relatively large weight.
Disclosure of Invention
Aiming at the problems of light weight and reliability of a lightning protection system adopting a wind power generation blade, the invention adopts a carbon fiber conductor, simultaneously provides a connection structure between carbon fiber and a down conductor, overcomes the defects and the shortcomings in the prior art, and provides the lightning protection system for the wind power blade and the wind power blade.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the utility model provides a wind-powered electricity generation blade lightning protection system, lightning protection system includes the carbon fiber cloth layer that covers at blade shell surface, at least one deck strap and connects complete machine lightning protection system's downlead, the carbon fiber cloth layer is through with thunder and lightning water conservancy diversion extremely the strap, the strap pass through the wire with the downlead is connected.
Along with the progress of blade technology, especially the application of carbon fiber in the blade field, carbon fiber can be used in the blade lightning protection system and act as conductor and bearing structure dual roles, through laying the carbon fiber cloth layer on the blade surface, carbon fiber is connected to lightning protection system root wire through down lead, when the blade receives the lightning stroke, will lightning current to wind-powered electricity generation complete machine's lightning protection system.
According to the invention, the carbon fiber cloth is applied to the lightning protection system, the carbon fiber cloth layer is paved on the surface of the blade, the carbon fiber cloth is connected to the root lead of the lightning protection system through the lower lead, lightning current is led to the lightning protection system of the wind power complete machine when the blade is struck by lightning, the carbon fiber cloth can bear structural load and conduct lightning to the lower lead, and the dual functions of a conductor and a bearing structure are born in the blade lightning protection system, so that the weight of the blade lightning protection system is reduced, and meanwhile, the blade can be effectively protected.
Preferably, the carbon fiber cloth layer guides lightning to the metal belt of the at least one layer through at least one additional carbon fiber cloth layer.
Preferably, the additional carbon fiber cloth layers are provided with a plurality of layers, the metal strips are provided with a plurality of layers, and the plurality of layers of additional carbon fiber cloth layers are alternately arranged with the plurality of layers of metal strips.
The carbon fiber cloth layer and the metal belt are arranged between the carbon fiber cloth layer and the down-lead wire, the carbon fiber cloth layer and the metal belt are alternately overlapped, the mutation degree of the resistance from the carbon fiber cloth layer to the metal belt is reduced, so that the damage of lightning current to the carbon fiber in the area near the carbon fiber cloth layer is reduced in the process of conducting lightning current from the carbon fiber cloth layer to the down-lead wire, the preference of using the carbon fiber cloth layer is reduced, and the damage degree of the wind power generation blade of the lightning protection system is reduced.
Preferably, the overlapping areas of the additional carbon fiber cloth layers are consistent, and each additional carbon fiber cloth layer completely covers the metal belt.
Preferably, the superposition thickness of each additional carbon fiber cloth layer meets the lightning current standard 200KA through the current capacity, so that lightning current is dispersed to a plurality of metal strips through a plurality of additional carbon fiber cloth layers and finally guided to the down conductor. Preferably, the connection point of the metal belt and the carbon fiber cloth is positioned at the area which is within 30% of the length of the blade from the blade root.
The whole lightning protection system is arranged at the blade root, the down lead and the lead are connected with the metal belt, the connecting sites of the metal belt and the carbon fiber cloth are arranged at the position close to the blade root and are closer to the lightning protection system, the consumption of the down lead and the lead can be saved, and accordingly the whole weight of the lightning protection system is reduced.
The wind power blade tip structure is narrower, and then the space is great near the blade root, arranges strap and carbon fiber cloth tie point near the blade root, and operating space is bigger when the installation, and it is also more convenient to arrange additional carbon fiber layer, provides convenience for staff's operation.
Preferably, the carbon fiber cloth layer is paved from the blade tip to the blade root, and the width of the carbon fiber cloth layer is selected according to the flow guiding bearing capacity of the carbon fiber material. Preferably, the carbon fiber cloth layer and the metal belt are connected to the blade by integral pouring.
The lightning receiving area can be enlarged, the lightning receiving efficiency can be improved, and the lightning is led into the down conductor at the root of the blade. Meanwhile, the gap reserved by the metal belt and the lead penetrating through the shell can be filled integrally, so that the waterproof and leak-proof effects are achieved.
Preferably, the metal belt penetrates through the blade shell and stretches into the blade cavity to be twisted into a strand, the strand is connected with the lead through the wire doubling device, and meanwhile, the upper lead and the lower lead are connected with the down lead through the wire doubling device; and the down conductor is connected with the whole lightning protection system at the blade root.
Under a general technical conception, the invention also provides a wind power blade, which comprises the wind power blade lightning protection system, wherein the wind power blade lightning protection system is connected to the outer shell of the wind power blade.
Compared with the prior art, the invention has the beneficial effects that:
(1) The lightning protection system is characterized in that the carbon fiber cloth is applied to the lightning protection system, lightning current is led to the lightning protection system of the wind power complete machine when the blade is struck by lightning, the carbon fiber cloth can bear structural load and conduct lightning to the down lead, and the lightning protection system of the blade bears the dual functions of conductor lightning receiving diversion and bearing structure, so that the weight of the lightning protection system of the blade can be effectively reduced, the lightning receiving coverage range can be increased, the lightning receiving efficiency of the blade is improved, and meanwhile the blade can be effectively protected.
(2) The connection mode of the carbon fiber and the down conductor is designed, the lightning is received by pouring and paving the carbon fiber cloth layer on the surface of the shell, the lightning receiving area can be enlarged, the lightning receiving efficiency is improved, the lightning is led into the down conductor at the root of the blade, a plurality of layers of additional carbon fiber cloth layers and metal strips are arranged between the carbon fiber cloth layer and the down conductor, and the metal strips are connected with the down conductor, so that the contact area of the carbon fiber cloth layer and the metal strips is increased, and the function of effectively conducting lightning current is realized.
(3) Through set up the additional carbon fiber cloth of multilayer in carbon fiber cloth and strap junction, reduce the resistance and follow carbon fiber cloth to the abrupt change degree of strap, reduce the degree of using the wind power generation blade damage of carbon fiber cloth layer lightning protection system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a wind blade lightning protection system in an embodiment;
FIG. 2 is an external structural schematic view of a wind blade side in an embodiment;
FIG. 3 is a schematic diagram illustrating connection between a carbon fiber cloth layer and a down conductor in an embodiment;
FIG. 4 is a schematic view of a cross-section of a carbon fiber cloth layer and a metal belt in connection with the embodiment.
In the figure: 1. a blade housing; 91. a carbon fiber cloth layer; 92. adding a carbon fiber cloth layer; 93. a metal belt; 94. a wire doubling device; 95. a doubling device; 96. and (5) leading down the wire.
Detailed Description
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown, for the purpose of illustrating the invention, but the scope of the invention is not limited to the specific embodiments shown.
Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present invention.
Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or may be prepared by existing methods.
Examples:
as shown in fig. 1, a wind power blade lightning protection system adopting a carbon fiber cloth layer mainly comprises a carbon fiber cloth layer 91 covering the surface of a blade shell 1, a metal belt 93, a down lead 96 connected with the whole lightning protection system, a doubling device 95 and a wire doubling device 94, wherein the carbon fiber cloth layer 91 guides lightning to the metal belt 93, and the metal belt 93 is finally connected with the down lead 96 through a wire.
As shown in fig. 2, in the wind power blade of the present invention, the wind power blade lightning protection system of the present embodiment is disposed on the blade housing 1. The carbon fiber cloth layer 91 covers the outer surface of the blade shell 1, and is laid from the blade tip to the blade root, the width of the carbon fiber cloth layer 91 is selected according to the flow guiding bearing capacity of the carbon fiber material, and the minimum requirement is that the lightning current passes through the carbon fiber cloth layer 91 without damaging the carbon fiber cloth layer. The carbon fiber cloth layer 91 serves as a dual function of structural load bearing and lightning guiding in the wind power blade of the present embodiment.
As shown in fig. 2, the carbon fiber cloth layer 91 and the metal belt 93 are connected to the surface of the blade shell by integral pouring, and the connection site is located at a position 30% of the length of the wind power blade from the blade root. As shown in fig. 1 and 4, at a position close to the blade root of the blade, the carbon fiber cloth layer 91 guides lightning to the two metal strips 93 through the two additional carbon fiber cloth layers 92; the carbon fiber cloth layers 91 are firstly overlapped with one layer of additional carbon fiber cloth layers 92, then the additional carbon fiber cloth layers 92 of each layer are alternately overlapped with the metal strips 93 of each layer, the overlapped areas of each layer are consistent, the carbon fiber cloth layers 91 and the additional carbon fiber cloth layers 92 completely cover the metal strips 93, the overlapped thickness reaches the lightning current standard 200KA when the current passing capacity, so that lightning is dispersed to the metal strips 93 of the plurality of layers through the plurality of layers of additional carbon fiber cloth layers 92 and finally guided to the down conductor 96. Through the above-mentioned multi-layer alternating overlapping design of the additional carbon fiber cloth layers 92 and the metal strips 93, the mutation degree of the electric resistance from the carbon fiber cloth layers 91 to the metal strips 93 can be reduced, so that the damage of lightning current to the carbon fibers in the area near the carbon fiber cloth layers is reduced in the process of conducting the lightning current from the carbon fiber cloth layers 91 to the down conductor 96.
Specifically, the carbon fiber cloth layer 91 is connected on the surface of the blade shell through integral pouring, in the pouring process, the carbon fiber cloth layer 91 is paved in a mold, and resin is poured again, so that the resin and the inner side of the carbon fiber cloth layer 91 form an integral structure, no resin package exists on the outer side of the carbon fiber cloth layer 91, and the resin is exposed outside to conduct lightning.
As shown in fig. 3, the metal belt 93 passes through the blade shell 1 and extends into the blade cavity to be twisted into a strand, and is connected with the wires through the wire doubling device 95, meanwhile, the upper and lower wires are connected with the down wire 96 through the wire doubling device 94, and the down wire 96 is connected with the whole lightning protection system at the blade root.
The lightning receiving area can be enlarged, the lightning receiving efficiency can be improved, and the lightning is led into the down conductor at the root of the blade.
Claims (6)
1. The wind power blade lightning protection system is characterized by comprising a carbon fiber cloth layer (91) covered on the surface of a blade shell (1), at least one layer of metal belt (93) and a down conductor (96) connected with the whole lightning protection system, wherein the carbon fiber cloth layer (91) guides lightning to the metal belt (93), and the metal belt (93) is connected with the down conductor (96) through a wire; the carbon fiber cloth layer (91) guides lightning to the metal belt (93) of the at least one layer through the additional carbon fiber cloth layer (92); the additional carbon fiber cloth layers (92) are provided with a plurality of layers, the metal strips (93) are provided with a plurality of layers, and the plurality of layers of additional carbon fiber cloth layers (92) and the plurality of layers of metal strips (93) are alternately arranged;
the carbon fiber cloth layer (91) is paved from the blade tip to the blade root, and the width of the carbon fiber cloth layer (91) is selected according to the flow guiding bearing capacity of the carbon fiber material; the connection point of the metal belt (93) and the carbon fiber cloth layer (91) is positioned at the area which is within 30% of the length of the blade from the blade root.
2. Wind blade lightning protection system according to claim 1, characterised in that the overlapping areas of the additional carbon fibre cloth layers (92) are uniform, each additional carbon fibre cloth layer (92) completely covering the metal strip (93).
3. Wind blade lightning protection system according to claim 1, characterised in that the superimposed thickness of each additional carbon fibre cloth layer (92) is such that the lightning current passing capacity reaches the lightning current standard 200KA, whereby lightning current is dispersed through the multiple additional carbon fibre cloth layers (92) to the multiple metal strips (93) and finally guided to the down conductor (96).
4. A wind power blade lightning protection system according to any of claims 1-3, characterised in that the carbon fibre cloth layer (91) and the metal strip (93) are attached to the blade by integral pouring.
5. A wind power blade lightning protection system according to any of claims 1-3, characterised in that the metal strip (93) extends into the blade cavity through the blade shell (1) to be twisted into a strand, and is connected to the wires by a wire doubling device (95), and the upper and lower wires are connected to the down-lead (96) by a wire doubling device (94); the down conductor (96) is connected with the whole lightning protection system at the blade root.
6. A wind blade comprising the wind blade lightning protection system of any one of claims 1-5, the wind blade lightning protection system being attached to an outer shell of the wind blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110615443.1A CN113339209B (en) | 2021-06-02 | 2021-06-02 | Wind-powered electricity generation blade lightning protection system and wind-powered electricity generation blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110615443.1A CN113339209B (en) | 2021-06-02 | 2021-06-02 | Wind-powered electricity generation blade lightning protection system and wind-powered electricity generation blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113339209A CN113339209A (en) | 2021-09-03 |
| CN113339209B true CN113339209B (en) | 2023-07-25 |
Family
ID=77473055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110615443.1A Active CN113339209B (en) | 2021-06-02 | 2021-06-02 | Wind-powered electricity generation blade lightning protection system and wind-powered electricity generation blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113339209B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005014884B3 (en) * | 2005-04-01 | 2006-09-14 | Nordex Energy Gmbh | Rotor blade, for a wind turbine, is of a plastics material with fiber reinforcements of a different thermal expansion to alter the aerodynamic profile shape on a temperature change |
| FR2972503B1 (en) * | 2011-03-11 | 2013-04-12 | Epsilon Composite | MECHANICAL REINFORCEMENT FOR A COMPOSITE MATERIAL PART, IN PARTICULAR FOR A LARGE-SIZED WINDBREAD BLADE |
| EP3594494B1 (en) * | 2018-07-12 | 2021-03-10 | Siemens Gamesa Renewable Energy A/S | A wind turbine blade and a wind turbine |
| CN110307127A (en) * | 2019-08-21 | 2019-10-08 | 吉林重通成飞新材料股份公司 | A kind of sea carbon fiber wind electricity blade lightning-protection system |
| CN112682275B (en) * | 2021-01-04 | 2021-11-16 | 株洲时代新材料科技股份有限公司 | Wind power blade lightning protection system and lightning protection wind power blade |
-
2021
- 2021-06-02 CN CN202110615443.1A patent/CN113339209B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113339209A (en) | 2021-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201204087Y (en) | Water-resistance type aluminum segmentation conductor for power cable | |
| CN113339209B (en) | Wind-powered electricity generation blade lightning protection system and wind-powered electricity generation blade | |
| CN112682275B (en) | Wind power blade lightning protection system and lightning protection wind power blade | |
| CN210379583U (en) | Waterproof structure for wiring terminal | |
| CN107119961A (en) | A kind of intelligent composite electrical shaft tower | |
| CN103199473B (en) | A kind of terminal tower is to the docking system of transformer station | |
| CN2539325Y (en) | Multifunctional insulation wire clamp | |
| CN210984371U (en) | Low wind pressure aluminium package steel core height leads aluminium type stranded conductor | |
| CN2582119Y (en) | Aluminium twisted wire with glass fibre reniforced composite material core | |
| CN205900144U (en) | Moisture -proof overhead insulated cable | |
| CN205811220U (en) | Anti-interference solar energy converter rat tail | |
| CN109461530A (en) | A kind of wear-resistant cable | |
| CN216100774U (en) | Novel composite cable pipeline | |
| CN211376253U (en) | Novel reinforced overhead insulated cable | |
| CN217933271U (en) | Aluminum alloy core photovoltaic cable | |
| CN220672243U (en) | Protective photovoltaic cable for sand-gossypii photovoltaic power station | |
| CN209637673U (en) | A kind of power cable apparatus for examination and repair | |
| CN202502824U (en) | High-voltage crosslinked polyethylene insulated and waterproof cable | |
| CN212774608U (en) | Wind wheel lightning receiving assembly of wind generating set | |
| CN202731100U (en) | Section welding type steel roof truss used for convertor station valve hall | |
| CN207867912U (en) | A kind of resistance to dragging aluminium alloy flexible cable of novel wear resistant | |
| CN214068411U (en) | Cable with good corrosion resistance and impermeability | |
| CN206542149U (en) | A kind of concentration bus duct joint water leakage device | |
| CN202711805U (en) | Carbon fiber cable containing glass fibrofelt | |
| CN216597000U (en) | High-strength self-adhesive shielding copper-plastic composite belt |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |