CN103470456B - A kind of segmented wind power generation blade with interchangeability - Google Patents
A kind of segmented wind power generation blade with interchangeability Download PDFInfo
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- CN103470456B CN103470456B CN201310435014.1A CN201310435014A CN103470456B CN 103470456 B CN103470456 B CN 103470456B CN 201310435014 A CN201310435014 A CN 201310435014A CN 103470456 B CN103470456 B CN 103470456B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
There is a segmented wind power generation blade for interchangeability, for solving the difficult problem of the manufacture of large scale wind power generation blade, transport and assembling.It comprises the first blade sections, the first metal connecting piece, the second metal connecting piece, the second blade sections and safeguards cover plate, described first blade sections and the first metal connecting piece are integral type structure, described first metal connecting piece right-hand member and the second metal connecting piece left end are equipped with, described second metal connecting piece and the second blade sections are integral type structure, at the first metal connecting piece and second metal connecting piece rigging position place's installation and maintenance cover plate.The present invention not only reduces the manufacture difficulty of large scale wind power generation blade, decreases cost of transportation, and improves the efficiency of assembling of segmented wind power generation blade, saves the maintenance cost of wind power generation blade simultaneously.
Description
Technical field
The present invention relates to a kind of wind power generation blade, especially a kind of linkage structure of segmented wind power generation blade, belongs to technical field of wind power generation.
Background technique
Along with the modern fast development of industrialization, people to the demand of the energy also in quick growth, the minimizing increasingly of the paradoxically fossil energy such as coal, oil and natural gas reserves with it, and there is serious environment pollution problem in fossil energy consumption process.Wind-power electricity generation was developed rapidly in countries in the world in the last few years with its environmental protection, safety and the advantage such as renewable, and China's wind-powered electricity generation total installation of generating capacity in 2010 has exceeded the U.S., becomes the wind-powered electricity generation big country of electric motor power first.
At present, Wind turbines maximizes has become a kind of trend of Wind Power Development, and wind power generation blade is the critical component of the acquisition wind energy of Wind turbines, and blade dimensions and aerodynamic configuration thereof are the key factors determining wind-power electricity generation acc power.Existing maximum blade length dimension is more than 60m, and what Britain was building and testing be greater than 90m blade can be used for the wind-driven generator that generating capacity is 8 ~ 10MW.But, wind power generating blade chip size increases the difficulty that blade is manufactured and strengthens, while cost of production significantly improves, also bring transport and a difficult problem is installed, someone begins one's study sectional-type blade for this reason, but existing sectional-type blade linkage structure is complicated, exchange poor performance, blade positioning precision and repetitive positioning accuracy lower, the reliable running of blade can not be ensured.
Chinese patent application CN102518568A discloses a kind of wind power sectional-type blade, and described blade is at least with two sections of blade compositions, and each blade sections connects into entirety by connector element.But technique scheme also exists following defect: 1, the exposed aerodynamic configuration that have impact on blade in blade exterior of link, connecting bolt and nut, and then have impact on blade aerodynamic characteristic; 2, link, connecting bolt and nut get rusty under the long-term effect of exposing to the weather, drenching with rain, and affect blade join strength; 3, connect location between blade upper-lower section inaccurate, alignment error is strengthened; 4, connecting bolt is stressed is mainly sheared, and the stress that can bear is subject to severely restricts.
In addition, Chinese patent application CN102635514A discloses a kind of large-scale wind electricity unit sectional-type blade and attaching method thereof, its structure is as follows: blade design is become two sections by described invention, bury in advance in the joint blade shell of every section and put Deformed Steel Bars, Deformed Steel Bars exposed portion length simultaneously, two sections of blade joint section Deformed Steel Bars lap positions will corresponding to good, after blade section transports to whole machine installation scene, utilize frock that two sections of blades are adjusted to desired relative positions, then utilize prefabricated blade inner formword and the material identical with its mother metal to carry out scene to paste, blade is coupled together.But also there is following shortcoming in technique scheme: 1, blade in-site installation needs frock to adjust the position of Deformed Steel Bars, the bad guarantee of positioning precision and efficiency is lower; 2, two blade sections are welded to connect integrally by Deformed Steel Bars, and attachment portion also needs corresponding mould to carry out scene to paste attachment portion profile, and installation efficiency is lower; 3 once blade local damage is serious, and blade upper-lower section can not be changed separately, and blade is scrapped whole, is unfavorable for the maintenance of blade, makes maintenance and repair added cost.
In sum, there is blade connection structure complexity in existing sectional-type blade, exchange poor performance, blade positioning precision and repetitive positioning accuracy lower, installation efficiency is low, can not ensure the technical problem of the reliable running of blade.
Summary of the invention
The object of the invention is to the drawback for prior art, provide a kind of being convenient to transport and install, exchange the segmented wind power generation blade with interchangeability that performance is good, positioning precision is high.
Problem of the present invention realizes with following technical proposals:
A kind of segmented wind power generation blade with interchangeability, it comprises the first blade sections, the first metal connecting piece, the second metal connecting piece, the second blade sections and safeguards cover plate, described first blade sections and the first metal connecting piece are integral type structure, described first metal connecting piece right-hand member and the second metal connecting piece left end are equipped with, described second metal connecting piece and the second blade sections are integral type structure, at the first metal connecting piece and second metal connecting piece rigging position place's installation and maintenance cover plate.
The above-mentioned segmented wind power generation blade with interchangeability, described first metal connecting piece outer surface and blade aerodynamic form fit, the grafting block mated with the second metal connecting piece is provided with at the right-hand member of the first metal connecting piece, grafting block arranges the first metal connecting piece pin hole and the first metal connecting piece articulation bolt hole, described first metal connecting piece pin hole is up/down perforation structure, and described first metal connecting piece articulation bolt hole is axial communicating structure.
The above-mentioned segmented wind power generation blade with interchangeability, described first metal connecting piece left end is provided with the pre-buried contiguous block of the first metal connecting piece mated with the first blade sections, the pre-buried contiguous block of described first metal connecting piece is cavity structure, and the pre-buried contiguous block outer wall of the first metal connecting piece arranges one group of square threaded form groove.
The above-mentioned segmented wind power generation blade with interchangeability, described second metal connecting piece outer surface and blade aerodynamic form fit, the inserting groove mated with the first metal connecting piece is provided with at the left end of the second metal connecting piece, inserting groove sidewall arranges the second metal connecting piece pin hole and the second metal connecting piece articulation bolt hole, described second metal connecting piece pin hole is up/down perforation structure, and described second metal connecting piece articulation bolt hole is axial communicating structure.
The above-mentioned segmented wind power generation blade with interchangeability, described second metal connecting piece right-hand member is provided with the pre-buried contiguous block of the second metal connecting piece mated with the second blade sections, the pre-buried contiguous block of described second metal connecting piece is cavity structure, and the pre-buried contiguous block outer wall of the second metal connecting piece arranges one group of square threaded form groove.
The above-mentioned segmented wind power generation blade with interchangeability, describedly safeguards that cover plate outer surface mates with the aerodynamic configuration of blade, and it is assembled by attachment screw and the first metal connecting piece and the second metal connecting piece.
The present invention is coordinated with the second metal connecting piece inserting groove by the first metal connecting piece grafting block, link is provided with fitting surface and locating face, link can ensure after connecting that connection gap and joint step are less than 0.02mm, cover plate place there will not be inverse air-flow step, favorable current step is less than 0.02mm, substantially increases the positioning precision of segmented wind power generation blade linkage structure; Large-scale blade is divided into two sections or multistage by the present invention, and has interchangeability, and corresponding mould is reduced greatly, and mould and lifting clamping device become greatly to reduce, and the cost of transportation of blade also declines greatly simultaneously.The present invention adopts hinged bolts assembly the first metal connecting piece and the second metal connecting piece to be fastenedly connected, and the assembling of segmented of being more convenient for wind power generation blade and dismounting, improve efficiency of assembling, makes installation cost greatly reduce simultaneously; First metal connecting piece and the second metal connecting piece outer surface are processed as the curved surface mated with wind power generation blade aerodynamic configuration by numerical control machine tool equipment by the present invention, again shaping jointing aerofoil profile again when avoiding wind power generation blade assembling, compared with the technological scheme that on-the-spot mould is located, scene pastes that Chinese patent application CN102635514A announces, further increase packaging efficiency.Of the present inventionly safeguard that cover plate is assembled by demountable structure and the first metal connecting piece and the second metal connecting piece, facilitate the maintenance of blade connection structure; The present invention can change separately blade tip or the blade root of wind power generation blade, improves exchange performance, thus greatly reduces the maintenance cost of wind power generation blade.First metal connecting piece 2 is mainly used for being connected first, second blade sections with the second metal connecting piece 3 and in connection procedure, plays cooperation and positioning action, to ensure that blade linkage section connects precision, ensure that gap, joint and step are less than 0.02mm, be square threaded form shape inside and outside link and blade sections joint, the Joint strength with blade sections composite material can be ensured.In a word, the present invention not only reduces the manufacture difficulty of large scale wind power generation blade, decreases cost of transportation, and improves interchangeability and the efficiency of assembling of segmented wind power generation blade, saves the maintenance cost of wind power generation blade simultaneously.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the detonation configuration figure of Fig. 1;
Fig. 3 is the first metal connecting piece structural representation;
Fig. 4 is the second metal connecting piece structural representation;
Fig. 5 is that the present invention is by hinged bolts assembled schematic diagram;
Fig. 6 is A-A cross-sectional view in Fig. 5;
Fig. 7 is that the present invention assembles schematic diagram by pin;
Fig. 8 is B-B cross-sectional view in Fig. 7;
Fig. 9 is that the present invention is by hinged bolts assembly and pin assembling schematic diagram;
Figure 10 is C-C cross-sectional view in Fig. 9.
In figure, each list of reference numerals is: 1, the first blade sections, 2, the first metal connecting piece, 2-1, grafting block, 2-2, the pre-buried contiguous block of the first metal connecting piece, 2-3, the first metal connecting piece pin hole, 2-4, the first metal connecting piece articulation bolt hole, the 3, second metal connecting piece, 3-1, inserting groove, 3-2, the pre-buried contiguous block of the second metal connecting piece, 3-3, the second metal connecting piece articulation bolt hole, 3-4, the second metal connecting piece articulation pin hole, the 4, second blade sections, 5, cover plate is safeguarded, 6, fastening screw trip bolt, 7, hinged bolts assembly, 8, pin.
Embodiment
Referring to Fig. 1, Fig. 2, the present invention includes the first blade sections 1, first metal connecting piece 2, second metal connecting piece 3, second blade sections 4 and safeguard cover plate 5, described first blade sections 1 and the first metal connecting piece 2 are integral type structure, described first metal connecting piece 2 right-hand member and the second metal connecting piece 3 left end are equipped with, described second metal connecting piece 3 and the second blade sections 4 are integral type structure, at the rigging position place installation and maintenance cover plate 5 of the first metal connecting piece 2 and the second metal connecting piece 3, describedly safeguard that cover plate 5 outer surface mates with the aerodynamic configuration of blade, it is assembled by attachment screw 6 and the first metal connecting piece 2 and the second metal connecting piece 3.
Referring to Fig. 3, first metal connecting piece 2 outer surface of the present invention and blade aerodynamic form fit, the grafting block 2-1 mated with the second metal connecting piece is provided with at the right-hand member of the first metal connecting piece 2, grafting block 2-1 arranges the first metal connecting piece pin hole 2-3 and the first metal connecting piece articulation bolt hole 2-4, described first metal connecting piece pin hole 2-3 is up/down perforation structure, and described first metal connecting piece articulation bolt hole 2-4 is axial communicating structure; The pre-buried contiguous block 2-2 of the first metal connecting piece mated with the first blade sections 1 is provided with at the first metal connecting piece 2 left end, the pre-buried contiguous block 2-2 of described first metal connecting piece is cavity structure, and the first metal connecting piece pre-buried contiguous block 2-2 outer wall arranges one group of square threaded form groove.
Referring to Fig. 4, second metal connecting piece 3 outer surface of the present invention and blade aerodynamic form fit, the inserting groove 3-1 mated with the first metal connecting piece is provided with at the left end of the second metal connecting piece 3, inserting groove 3-1 sidewall arranges the second metal connecting piece pin hole 3-4 and the second metal connecting piece articulation bolt hole 3-3, described second metal connecting piece pin hole 3-4 is up/down perforation structure, and described second metal connecting piece articulation bolt hole 3-3 is axial communicating structure; The pre-buried contiguous block 3-2 of the second metal connecting piece mated with the second blade sections 4 is provided with at the second metal connecting piece 3 right-hand member, the pre-buried contiguous block 3-2 of described second metal connecting piece is cavity structure, and the second metal connecting piece pre-buried contiguous block 3-2 outer wall arranges one group of square threaded form groove.
Referring to Fig. 5, Fig. 6, be first specific embodiment of the present invention shown in figure, wind power generation blade is at least divided into two sections, first processing is coordinated to the first metal connecting piece 2 and the second metal connecting piece 3, the grafting block 2-1 of the first metal connecting piece 2 is mated mutually with the inserting groove 3-1 of the second metal connecting piece 3, the grafting block 2-1 of the first metal connecting piece 2 arranges the first metal connecting piece articulation bolt hole 2-4, the inserting groove 3-1 sidewall of the second metal connecting piece 3 arranges the second metal connecting piece articulation bolt hole 3-3; Then the first metal connecting piece 2 and the second metal connecting piece 3 are navigated to respectively on the shaping die of the first blade sections 1, second blade sections 4, the pre-buried contiguous block of first metal connecting piece of the first metal connecting piece 2 and the pre-buried contiguous block of the second metal connecting piece of the second metal connecting piece 3 utilize epoxy resin glued joint glass fibre or carbon fibre cloth, the first blade sections 1 is integrated with the second metal connecting piece 3 one-tenth with the first metal connecting piece 2, second blade sections 4; Hinged bolts assembly 7 is assembled in the first metal connecting piece articulation bolt hole 2-4 axially offered and the second metal connecting piece articulation bolt hole 3-3, first metal connecting piece 2 and the second metal connecting piece 3 are linked together, such first blade sections 1 and the second blade sections 4 link into an integrated entity; Last by fastening screw trip bolt 6 by safeguarding that cover plate 5 is fixed on the first metal connecting piece 2 and the second metal connecting piece 3, form complete wind power generation blade.It is thinner that the present embodiment is applicable to aerofoil profile, the assembling of the wind power generation blade that generator power is less.First metal connecting piece 2 and the second metal connecting piece 3 are mainly used for connection the one the second blade sections, play by coordinating and positioning action in connection procedure.Be square threaded form shape inside and outside link link and blade sections joint, increase the area of contact of composite material and link, to ensure the Joint strength with blade sections composite material.Bolt 7 effect is that blade sections 1 and blade sections 2 are tightened to one by metal connecting piece, clamping bolt section portion has lock nut and check washer to be used for preventing nut from unclamping, clamping bolt 7 exhibition of mainly bearing is to tensile stress and part shearing stress, bolt 8 mainly bears shearing stress, bears bending stress between metal connecting piece.Shape face, location in prior art is composite material blade profile location, and positioning precision is not high, and efficiency is lower, does not possess in interchangeability.
Referring to Fig. 7, Fig. 8, be second specific embodiment of the present invention shown in figure, wind power generation blade is at least divided into two sections, first processing is coordinated to the first metal connecting piece 2 and the second metal connecting piece 3, the grafting block 2-1 of the first metal connecting piece 2 is mated mutually with the inserting groove 3-1 of the second metal connecting piece 3, the grafting block 2-1 of the first metal connecting piece 2 arranges the first metal connecting piece pin hole 2-3, the inserting groove 3-1 sidewall of the second metal connecting piece 3 arranges the second metal connecting piece pin hole 3-4; Then the first metal connecting piece 2 and the second metal connecting piece 3 are navigated to respectively on the shaping die of the first blade sections 1, second blade sections 4, the pre-buried contiguous block of first metal connecting piece of the first metal connecting piece 2 and the pre-buried contiguous block of the second metal connecting piece of the second metal connecting piece 3 utilize epoxy resin glued joint glass fibre or carbon fibre cloth, the first blade sections 1 is integrated with the second metal connecting piece 3 one-tenth with the first metal connecting piece 2, second blade sections 4; Pin 8 is assembled in the first metal connecting piece pin hole 2-3 offered at above-below direction and the second metal connecting piece pin hole 3-4, first metal connecting piece 2 and the second metal connecting piece 3 are linked together, such first blade sections 1 and the second blade sections 4 link into an integrated entity; Last by fastening screw trip bolt 6 by safeguarding that cover plate 5 is fixed on the first metal connecting piece 2 and the second metal connecting piece 3, form complete wind power generation blade.In the present embodiment, pin 8 bears shearing force, is applicable to the assembling of stressed less blade of wind-driven generator.
Referring to Fig. 9, Figure 10, be the 3rd specific embodiment of the present invention shown in figure, wind power generation blade is at least divided into two sections, first processing is coordinated to the first metal connecting piece 2 and the second metal connecting piece 3, the grafting block 2-1 of the first metal connecting piece 2 is mated mutually with the inserting groove 3-1 of the second metal connecting piece 3, the grafting block 2-1 of the first metal connecting piece 2 arranges the first metal connecting piece pin hole 2-3 and the first metal connecting piece articulation bolt hole 2-4, the inserting groove 3-1 sidewall of the second metal connecting piece 3 arranges the second metal connecting piece pin hole 3-4 and the second metal connecting piece articulation bolt hole 3-3, then the first metal connecting piece 2 and the second metal connecting piece 3 are navigated to respectively on the shaping die of the first blade sections 1, second blade sections 4, the pre-buried contiguous block of first metal connecting piece of the first metal connecting piece 2 and the pre-buried contiguous block of the second metal connecting piece of the second metal connecting piece 3 utilize epoxy resin glued joint glass fibre or carbon fibre cloth, the first blade sections 1 is integrated with the second metal connecting piece 3 one-tenth with the first metal connecting piece 2, second blade sections 4, hinged bolts assembly 7 is assembled in the first metal connecting piece articulation bolt hole 2-4 axially offered and the second metal connecting piece articulation bolt hole 3-3, pin 8 is assembled in the first metal connecting piece pin hole 2-3 offered at above-below direction and the second metal connecting piece pin hole 3-4, by one group of hinged bolts assembly 7 and one group of pin 8, first metal connecting piece 2 and the second metal connecting piece 3 are linked together, such first blade sections 1 and the second blade sections 4 link into an integrated entity, last by fastening screw trip bolt 6 by safeguarding that cover plate 5 is fixed on the first metal connecting piece 2 and the second metal connecting piece 3, form complete wind power generation blade.The present embodiment is applicable to the assembling to power large wind generator blade.
Claims (2)
1. a segmented wind power generation blade linkage structure, it is characterized in that, it comprises the first blade sections (1), first metal connecting piece (2), second metal connecting piece (3), second blade sections (4) and safeguard cover plate (5), described first blade sections (1) and the first metal connecting piece (2) are integral type structure, described first metal connecting piece (2) right-hand member and the second metal connecting piece (3) left end are equipped with, described second metal connecting piece (3) and the second blade sections (4) are integral type structure, at the rigging position place installation and maintenance cover plate (5) of the first metal connecting piece (2) with the second metal connecting piece (3),
Described first metal connecting piece (2) outer surface and blade aerodynamic form fit, the grafting block (2-1) mated with the second metal connecting piece is provided with at the right-hand member of the first metal connecting piece (2), grafting block (2-1) arranges the first metal connecting piece pin hole (2-3) and the first metal connecting piece articulation bolt hole (2-4), described first metal connecting piece pin hole (2-3) is up/down perforation structure, and described first metal connecting piece articulation bolt hole (2-4) is axial communicating structure;
Described first metal connecting piece (2) left end is provided with the pre-buried contiguous block of the first metal connecting piece (2-2) mated with the first blade sections (1), the pre-buried contiguous block of described first metal connecting piece (2-2) is cavity structure, and the first metal connecting piece pre-buried contiguous block (2-2) outer wall arranges one group of square threaded form groove;
Described second metal connecting piece (3) outer surface and blade aerodynamic form fit, the inserting groove (3-1) mated with the first metal connecting piece is provided with at the left end of the second metal connecting piece (3), inserting groove (3-1) sidewall arranges the second metal connecting piece pin hole (3-4) and the second metal connecting piece articulation bolt hole (3-3), described second metal connecting piece pin hole (3-4) is up/down perforation structure, and described second metal connecting piece articulation bolt hole (3-3) is axial communicating structure;
Described second metal connecting piece (3) right-hand member is provided with the pre-buried contiguous block of the second metal connecting piece (3-2) mated with the second blade sections (4), the pre-buried contiguous block of described second metal connecting piece (3-2) is cavity structure, and the second metal connecting piece pre-buried contiguous block (3-2) outer wall arranges one group of square threaded form groove.
2. a kind of segmented wind power generation blade linkage structure according to claim 1, it is characterized in that, describedly safeguard that cover plate (5) outer surface mates with the aerodynamic configuration of blade, it is assembled by attachment screw (6) and the first metal connecting piece (2) and the second metal connecting piece (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435014.1A CN103470456B (en) | 2013-09-23 | 2013-09-23 | A kind of segmented wind power generation blade with interchangeability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435014.1A CN103470456B (en) | 2013-09-23 | 2013-09-23 | A kind of segmented wind power generation blade with interchangeability |
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| Publication Number | Publication Date |
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| CN103470456A CN103470456A (en) | 2013-12-25 |
| CN103470456B true CN103470456B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310435014.1A Expired - Fee Related CN103470456B (en) | 2013-09-23 | 2013-09-23 | A kind of segmented wind power generation blade with interchangeability |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014220249A1 (en) * | 2014-10-07 | 2016-04-07 | Wobben Properties Gmbh | Rotor blade of a wind turbine |
| CN104373301B (en) * | 2014-10-30 | 2017-11-03 | 迪皮埃复材构件（太仓）有限公司 | Metal carry fixing point structure and its manufacture method on core filled composite material |
| CN104373302B (en) * | 2014-11-18 | 2017-06-30 | 株洲时代新材料科技股份有限公司 | Large scale wind power machine subsection blade and its equipped connection method |
| CN106438192A (en) * | 2015-08-07 | 2017-02-22 | 中材科技风电叶片股份有限公司 | Sectional type wind power generation blade connecting structure and method |
| CN113757035A (en) * | 2020-06-04 | 2021-12-07 | 乌鲁木齐金风天翼风电有限公司 | Sectional type blade, manufacturing method thereof and wind generating set |
| CN111692050A (en) * | 2020-07-01 | 2020-09-22 | 上海电气风电集团股份有限公司 | Connecting assembly and fan blade comprising same |
| CN111927699B (en) * | 2020-07-28 | 2021-11-16 | 杭州盛通科技有限公司 | Segmented connected wind driven generator impeller |
| CN116215592B (en) * | 2023-03-24 | 2023-10-17 | 新创碳谷集团有限公司 | Connection structure, connection method and railway traffic vehicle body |
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| CN201125841Y (en) * | 2007-12-21 | 2008-10-01 | 广东明阳风电技术有限公司 | Blade root T type bolt connecting structure of wind generating set blade |
| CN101737250A (en) * | 2008-11-14 | 2010-06-16 | 通用电气公司 | Turbine blade fabrication |
| CN201982257U (en) * | 2011-01-10 | 2011-09-21 | 索特传动设备有限公司 | Blade for wind driven generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004011616A (en) * | 2002-06-11 | 2004-01-15 | Shin Meiwa Ind Co Ltd | Wind mill blade structure for wind power generator |
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|---|---|---|---|---|
| CN1977108A (en) * | 2004-06-30 | 2007-06-06 | 维斯塔斯风力系统有限公司 | Wind turbine blades made of two separate sections, and method of assembly |
| CN201125841Y (en) * | 2007-12-21 | 2008-10-01 | 广东明阳风电技术有限公司 | Blade root T type bolt connecting structure of wind generating set blade |
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| CN201982257U (en) * | 2011-01-10 | 2011-09-21 | 索特传动设备有限公司 | Blade for wind driven generator |
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| CN103470456A (en) | 2013-12-25 |
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