CN114837881A - Anticorrosive and lightning protection wind-powered electricity generation blade - Google Patents
Anticorrosive and lightning protection wind-powered electricity generation blade Download PDFInfo
- Publication number
- CN114837881A CN114837881A CN202210458993.1A CN202210458993A CN114837881A CN 114837881 A CN114837881 A CN 114837881A CN 202210458993 A CN202210458993 A CN 202210458993A CN 114837881 A CN114837881 A CN 114837881A
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- layer
- protective layer
- blade
- edge protective
- front edge
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- 230000005611 electricity Effects 0.000 title claims description 3
- 239000011241 protective layer Substances 0.000 claims abstract description 69
- 239000010410 layer Substances 0.000 claims abstract description 46
- 238000005260 corrosion Methods 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910001080 W alloy Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 8
- 239000004020 conductor Substances 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 208000025274 Lightning injury Diseases 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/303—Details of the leading edge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/304—Details of the trailing edge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/95—Preventing corrosion
-
- 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 an anticorrosion and lightning protection wind power blade which comprises a blade shell, a rear edge protection layer, a chordwise lapping layer, a front edge protection layer, a tip lightning receptor and a grounding wire, wherein the blade shell is provided with a blade shell body; the rear edge protective layer is laid from the blade tip to the root on the rear edge side of the PS surface and the SS surface of the blade shell respectively, the front edge protective layer is laid from the blade tip to the root on the front edge side of the blade shell, and the rear edge protective layer and the front edge protective layer are both connected with a tip lightning receptor positioned at the tip; the chord-direction lap joint layer is respectively positioned between the two trailing edge protective layers and the leading edge protective layer and is lapped with the trailing edge protective layer and the leading edge protective layer, the chord-direction lap joint layer is provided with a connecting block at the center of the root part, the connecting block is provided with a counter bore matched with the connecting bolt, one end of the grounding wire is connected with the connecting terminal, and the connecting terminal is tightly connected with the connecting bolt through a nut.
Description
Technical Field
The invention belongs to the technical field of wind power blades, and particularly relates to an anti-corrosion and lightning-protection wind power blade.
Background
Wind energy is developed rapidly as a green energy source, the quantity of wind power generator assembling machines is increasing in recent years, the demand quantity of wind power blades is also increasing, offshore wind power blades are also increasing, and the blades are usually installed in higher terrain or marine environment. The main component of the wind power blade is a glass fiber reinforced plastic composite material, and the front edge corrosion and lightning damage of the wind power blade are two major problems faced at present. The aerodynamic characteristics of the blade can be damaged after the front edge is corroded and struck by lightning, the generated energy is influenced, if the corrosion and the struck by lightning are too serious, the blade can be greatly damaged, and the maintenance cost is extremely high.
At present, common wind power blade corrosion prevention and lightning protection are independent protection, a polyurethane front edge protection film is pasted on the front edge of the blade or front edge protection paint is coated on the front edge in a rolling mode, a metal lightning conductor is installed inside the blade, a metal lightning receptor is installed on the rear edge of a blade body, and the lightning receptor is connected with the internal lightning conductor. The method has the advantages that the corrosion prevention time of the front edge protective film is short, the front edge protective film cannot be protected for a long time, the lightning stroke protection cannot be carried out on the front edge, the lightning stroke protection area of the rear edge lightning receptor is limited, a metal lightning conductor in the rear edge lightning receptor is easy to break down, the installation process is complex, and the operation time is long. Therefore, it is very important to develop the wind power blade with the double-system protection system which has corrosion protection and lightning protection at the same time.
Disclosure of Invention
In order to solve the problems, the invention provides an anti-corrosion and lightning protection wind power blade, so that the service life of a front edge protective film is prolonged, lightning protection can be carried out, the lightning area of a rear edge is increased, and a metal lightning conductor is not arranged inside the blade to avoid the internal breakdown of the blade.
The invention is realized by the following technical scheme:
an anticorrosion and lightning protection wind power blade comprises a blade shell, a rear edge protection layer, a chord direction lap joint layer, a front edge protection layer, a tip lightning arrester and a grounding wire;
the rear edge protective layer is laid from the blade tip to the root on the rear edge side of the PS surface and the SS surface of the blade shell respectively, the front edge protective layer is laid from the blade tip to the root on the front edge side of the blade shell, and one end of each of the rear edge protective layer and the front edge protective layer is connected with a tip lightning receptor at the tip;
chord direction overlap joint layer is located respectively between two trailing edge inoxidizing coatings and the leading edge inoxidizing coating and all has the overlap joint with trailing edge inoxidizing coating and leading edge inoxidizing coating, its connect passage that is used for providing trailing edge inoxidizing coating and leading edge inoxidizing coating, chord direction overlap joint layer is provided with the connecting block in root central point position, the connecting block inner chamber be provided with connecting bolt assorted counter bore for connecting bolt's bolt post passes the outside that the counter bore is located the connecting block, binding post is connected to earth connection one end, binding post passes through nut and connecting bolt fastening connection.
Furthermore, the material of the rear edge protective layer is one of metal copper, stainless steel, aluminum alloy and tungsten alloy, the thickness of the rear edge protective layer is 0.1-2mm, and the width of the rear edge protective layer is 50-300 mm.
Furthermore, the number of the front edge protective layers is 1, the front edge protective layers are made of nano conductive adhesive tapes, the thickness of the front edge protective layers is 0.1-1mm, and the width of the front edge protective layers is 50-300 mm.
Further, the front edge protective layer is fixedly connected with the chord-wise lap joint layer through rivets.
Further, the trailing edge protective layer and the leading edge protective layer are both arranged on the outermost layer of the blade shell, and when the wind power blade is prepared, the trailing edge protective layer is firstly laid in a mold before the blade shell is laid, the leading edge protective layer is laid after the blade is demoulded, the chord direction lap joint layer is laid on the upper layer of the trailing edge protective layer and is directly contacted with the shell laying layer.
Furthermore, the chord direction overlap joint layer is distributed at intervals of a plurality in the length direction of the tip part, and the root part is provided with one channel.
Furthermore, the length of the chord direction lapping layer, the trailing edge protective layer and the leading edge protective layer is more than 30 mm.
Furthermore, the two grounding wires are gathered into one at the root part through a wire doubling clamp.
Furthermore, the connecting block and the chord-direction lap joint layer positioned at the root part are welded into a whole.
The invention has the beneficial effects that:
(1) the front edge protective layer adopts the nanoscale conductive adhesive tape, so that the anti-corrosion effect is good, and the anti-lightning effect is achieved while the anti-corrosion effect is achieved;
(2) the trailing edge protective layer is arranged from the tip to the root in a full-length mode, the lightning receiving area is large, and the lightning protection effect is good;
(3) the chord-wise lap joint layer provides a current circulation connecting channel for the front edge protective layer and the rear edge protective layer, and can disperse current conduction;
(4) a metal lightning conductor is not arranged inside the blade, so that the breakdown inside the blade is avoided;
(5) the installation process is convenient to operate and long in service life, and can be used for comprehensively protecting the front edge of the blade from being corroded and the front and rear edges from being damaged by lightning.
Drawings
FIG. 1 is a schematic view of an anti-corrosion and lightning protection wind turbine blade;
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view B-B of FIG. 1;
reference numerals: 1. a blade shell; 2. a trailing edge protection layer; 3. a chordal overlap layer; 4. a leading edge protective layer; 5. a tip lightning receptor; 6. riveting; 7. connecting blocks; 8. a connecting bolt; 9. a ground line; 10. a wiring terminal; 11. a nut; 12. and (5) clamping the cable.
Detailed Description
The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the accompanying drawings.
Example 1
As shown in the figure, the anticorrosion and lightning protection wind power blade comprises a blade shell 1, a rear edge protection layer 2, a chordwise lapping layer 3, a front edge protection layer 4, a tip lightning receptor 5 and a grounding wire 9;
the rear edge protective layer 2 is laid from the tip part to the root part of the blade along the rear edge side of the blade shell 1PS and the SS surface respectively, the lightning receiving area is large due to the fact that the rear edge protective layer is arranged from the tip part to the root part in the whole length, the lightning protection effect is good, the rear edge protective layer 2 is made of one of metal copper, stainless steel, aluminum alloy and tungsten alloy, the thickness of the rear edge protective layer is 0.1-2mm, and the width of the rear edge protective layer is 50-300 mm.
The front edge protective layer 4 is laid along the blade tip part to the root part on the front edge side of the blade shell 1, and one end of the rear edge protective layer 2 and one end of the front edge protective layer 4 are both connected with a tip part lightning receptor 5 positioned at the tip part; the number of the front edge protective layers 4 is 1, the front edge protective layers are made of nanoscale conductive adhesive tapes, the anti-corrosion effect is good, the anti-corrosion effect is considered, the lightning protection effect is achieved, the thickness of the front edge protective layers is 0.1-1mm, and the width of the front edge protective layers is 50-300 mm.
The chord-direction lap joint layer 3 is respectively positioned between the two trailing edge protective layers 2 and the leading edge protective layer 4 and is lapped with the trailing edge protective layer 2 and the leading edge protective layer 4, the lap joint length is more than 30mm, the chord-direction lap joint layer 3 provides a current circulation connecting channel for the leading edge protective layer 4 and the trailing edge protective layer 2, current conduction can be dispersed, and no metal lightning conductor is arranged inside to avoid the internal breakdown of the blade; the front edge protective layer 4 is fixedly connected with the chord-wise lap joint layer 3 through rivets 6. Chord direction overlap joint layer 3 distributes at tip length direction interval several, sets up one at the root. The chord-wise lap joint layer 3 is provided with a connecting block 7 at the center of the root, and the connecting block 7 is welded with the chord-wise lap joint layer 3 at the root into a whole. The inner cavity of the connecting block 7 is provided with a counter bore matched with the connecting bolt 8, so that the bolt column of the connecting bolt 8 penetrates through the counter bore to be located outside the connecting block 7, one end of the grounding wire 9 is connected with the connecting terminal 10, the connecting terminal 10 is tightly connected with the connecting bolt 8 through the nut 11, and the two grounding wires 9 are converged into one through the wire parallel clamp 12 at the root.
The rear edge protective layer 2 and the front edge protective layer 4 are both arranged on the outermost layer of the blade shell, and when the wind power blade is prepared, the rear edge protective layer 2 is firstly laid in a mould before the blade shell is layered, the front edge protective layer 4 is laid after the blade is demoulded, and the chord direction lap joint layer 3 is laid on the upper layer of the rear edge protective layer 2 and is directly contacted with the shell layer.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides an anticorrosive and lightning protection wind power blade which characterized in that: the blade comprises a blade shell (1), a rear edge protective layer (2), a chordwise lapping layer (3), a front edge protective layer (4), a tip lightning receptor (5) and a grounding wire (9);
the rear edge protective layer (2) is laid from the blade tip to the root on the rear edge side of the PS and SS surfaces of the blade shell (1), the front edge protective layer (4) is laid from the blade tip to the root on the front edge side of the blade shell (1), and one ends of the rear edge protective layer (2) and the front edge protective layer (4) are connected with a tip lightning receptor (5) positioned at the tip;
chord is to overlap joint layer (3) be located respectively between two trailing edge inoxidizing coating (2) and leading edge inoxidizing coating (4) and all have the overlap joint with trailing edge inoxidizing coating (2) and leading edge inoxidizing coating (4), its connecting channel that is used for providing trailing edge inoxidizing coating (2) and leading edge inoxidizing coating (4), chord is to overlap joint layer (3) and is provided with connecting block (7) in root central point position, connecting block (7) inner chamber be provided with connecting bolt (8) assorted counter bore for the bolt post of connecting bolt (8) passes the outside that the counter bore is located connecting block (7), binding post (10) is connected to earth connection (9) one end, binding post (10) are through nut (11) and connecting bolt (8) fastening connection.
2. An anti-corrosion and lightning protection wind turbine blade according to claim 1, characterized in that: the rear edge protection layer (2) is made of one of metal copper, stainless steel, aluminum alloy and tungsten alloy, the thickness of the rear edge protection layer is 0.1-2mm, and the width of the rear edge protection layer is 50-300 mm.
3. An anti-corrosion and lightning protection wind turbine blade according to claim 1, characterized in that: the number of the front edge protective layers (4) is 1, the front edge protective layers are made of nano conductive adhesive tapes, the thickness of the front edge protective layers is 0.1-1mm, and the width of the front edge protective layers is 50-300 mm.
4. An anti-corrosion and lightning protection wind turbine blade according to claim 1, characterized in that: the front edge protective layer (4) is fixedly connected with the chord-direction lap joint layer (3) through rivets (6).
5. An anti-corrosion and lightning protection wind turbine blade according to claim 1, characterized in that: trailing edge inoxidizing coating (2) and leading edge inoxidizing coating (4) all set up the outmost at the blade casing, and when preparing wind-powered electricity generation blade, lay in the mould at the blade casing before laying up at the trailing edge inoxidizing coating (2) at first, laying behind the blade drawing of patterns at leading edge inoxidizing coating (4), the chord direction overlap joint layer (3) are laid on trailing edge inoxidizing coating (2) upper strata, and are spread layer direct contact with the casing.
6. An anti-corrosion and lightning protection wind turbine blade according to claim 1, characterized in that: the chord direction lap joint layer (3) is distributed at intervals on the length direction of the tip part, and the root part is provided with one passage.
7. An anti-corrosion and lightning protection wind turbine blade according to claim 1, characterized in that: the length of the chord direction lapping layer (3) and the lapping length of the rear edge protective layer (2) and the front edge protective layer (4) are more than 30 mm.
8. An anti-corrosion and lightning protection wind turbine blade according to claim 1, characterized in that: two grounding wires (9) are converged into one wire through the wire-combining clamp (12) at the root.
9. An anti-corrosion and lightning protection wind turbine blade according to claim 1, characterized in that: the connecting block (7) and the chord direction lap joint layer (3) positioned at the root part are welded into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210458993.1A CN114837881B (en) | 2022-04-28 | 2022-04-28 | Corrosion-resistant and lightning-proof wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210458993.1A CN114837881B (en) | 2022-04-28 | 2022-04-28 | Corrosion-resistant and lightning-proof wind power blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114837881A true CN114837881A (en) | 2022-08-02 |
| CN114837881B CN114837881B (en) | 2023-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210458993.1A Active CN114837881B (en) | 2022-04-28 | 2022-04-28 | Corrosion-resistant and lightning-proof wind power blade |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936264A (en) * | 2009-06-25 | 2011-01-05 | 通用电气公司 | The cross conduction lightning conductor system |
| US20110142678A1 (en) * | 2010-11-23 | 2011-06-16 | General Electric Company | Erosion protection coating for rotor blade of wind turbine |
| CN103329379A (en) * | 2011-12-09 | 2013-09-25 | 三菱重工业株式会社 | Wind turbine blade |
| CN104454388A (en) * | 2014-12-05 | 2015-03-25 | 苏州汇诚智造工业设计有限公司 | Noise-reduction lightning-protection wind generator blade and manufacturing method thereof |
| DE102015115190A1 (en) * | 2015-09-09 | 2017-03-09 | Fichtner & Schicht GmbH | Wind turbine |
| CN108266335A (en) * | 2017-12-18 | 2018-07-10 | 洛阳双瑞风电叶片有限公司 | A kind of wind power plant blade lightning protection device |
-
2022
- 2022-04-28 CN CN202210458993.1A patent/CN114837881B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936264A (en) * | 2009-06-25 | 2011-01-05 | 通用电气公司 | The cross conduction lightning conductor system |
| US20110142678A1 (en) * | 2010-11-23 | 2011-06-16 | General Electric Company | Erosion protection coating for rotor blade of wind turbine |
| CN102536630A (en) * | 2010-11-23 | 2012-07-04 | 通用电气公司 | Erosion protection coating for rotor blade of wind turbine |
| CN103329379A (en) * | 2011-12-09 | 2013-09-25 | 三菱重工业株式会社 | Wind turbine blade |
| CN104454388A (en) * | 2014-12-05 | 2015-03-25 | 苏州汇诚智造工业设计有限公司 | Noise-reduction lightning-protection wind generator blade and manufacturing method thereof |
| DE102015115190A1 (en) * | 2015-09-09 | 2017-03-09 | Fichtner & Schicht GmbH | Wind turbine |
| CN108266335A (en) * | 2017-12-18 | 2018-07-10 | 洛阳双瑞风电叶片有限公司 | A kind of wind power plant blade lightning protection device |
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| Publication number | Publication date |
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| CN114837881B (en) | 2023-08-25 |
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