WO2013004125A1 - Pale pour ensemble génératrice éolienne et ensemble génératrice éolienne - Google Patents

Pale pour ensemble génératrice éolienne et ensemble génératrice éolienne Download PDF

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Publication number
WO2013004125A1
WO2013004125A1 PCT/CN2012/077209 CN2012077209W WO2013004125A1 WO 2013004125 A1 WO2013004125 A1 WO 2013004125A1 CN 2012077209 W CN2012077209 W CN 2012077209W WO 2013004125 A1 WO2013004125 A1 WO 2013004125A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
wind turbine
segment
generator set
wind
Prior art date
Application number
PCT/CN2012/077209
Other languages
English (en)
Chinese (zh)
Inventor
叶杭冶
陈棋
Original Assignee
浙江运达风电股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 浙江运达风电股份有限公司 filed Critical 浙江运达风电股份有限公司
Publication of WO2013004125A1 publication Critical patent/WO2013004125A1/fr

Links

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
    • 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
    • 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
    • F05B2240/302—Segmented or sectional blades
    • 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
    • F05B2260/30—Retaining components in desired mutual position
    • F05B2260/301—Retaining bolts or nuts
    • F05B2260/3011—Retaining bolts or nuts of the frangible or shear type
    • 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

Definitions

  • the present invention relates to the field of wind power equipment, and more particularly to a wind turbine blade, and to a wind turbine having the above blades.
  • the main forms of damage to wind turbines include the following: blade breakage, blade cracking, tower breakage, and foundation overturning of the entire wind turbine.
  • the three blades account for 15% of the total cost of the wind turbine.
  • the single blade accounts for 5% of the total fan cost. Therefore, the damage caused by the blade damage in the above several failure modes It is smaller, and the breakage of the tower and the overturning of the foundation are the biggest damage to the entire wind turbine.
  • the present invention provides a wind turbine blade to reduce the bending moment load generated by the blade on the entire tower and the foundation when the blade is blown by a strong wind such as a typhoon, thereby reducing damage to the entire wind turbine. .
  • the present invention provides the following technical solutions:
  • a wind turbine blade includes a blade root segment, a blade tip segment, and a connector connecting the blade root segment and the blade tip segment with less strength than both.
  • the connecting member comprises a flange disposed on the blade root segment and the tip segment and a bolt engaged with the flange.
  • the length of the blade root segment is longer than the length of the blade tip segment.
  • the length of the blade root section is 2/3 of the length of the entire wind turbine blade, and the length of the blade tip segment is 1/3 of the length of the wind turbine blade.
  • a blade maintenance window is opened at a portion where the blade root segment is connected to the blade tip segment.
  • connection between the tip segment and the blade root segment is provided with a smooth surface for reinforcing the fiberglass cloth at the joint.
  • the present invention also provides a wind turbine comprising the wind turbine blade of any of the above.
  • the wind turbine blade provided by the invention is divided into a blade root segment, a blade tip segment and a connecting piece, and the connecting member connects the blade root segment and the blade tip segment to form the entire blade, and the strength of the connecting member is lower than the blade root segment and the tip segment
  • the connecting member When the blade is blown by a strong wind such as a typhoon, when the load exceeds the bearing capacity of the connecting member, the connecting member is broken to cause the tip portion to fall off.
  • the shedding of the tip section reduces the diameter of the entire wind turbine blade Small, the swept area of the wind turbine is reduced, which in turn reduces the bending load applied to the tower and foundation by the entire blade.
  • the wind turbine blades described above allow the tower and foundation to be preserved in a strong wind such as a typhoon, reducing the loss of the entire wind turbine.
  • FIG. 1 is a schematic structural view of a wind turbine set according to an embodiment of the present invention.
  • Figure 2 is a side view of Figure 1;
  • Figure 3 is a schematic view showing the structure of the wind turbine blade of Figure 1;
  • Figure 4 is a top plan view of Figure 3;
  • Figure 5 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 6 is a cross-sectional view taken along line B-B of Figure 5.
  • Hub assembly 1 engine room 2, tower 3, foundation 4, tip section 5, blade root section 6, blade maintenance window 7, bolt 8, flange 9, flange 10. detailed description
  • the invention provides a wind turbine blade which reduces the bending moment load generated by the blade on the entire tower and the foundation when the strong wind blows the blade such as a typhoon, thereby reducing the damage to the entire wind turbine.
  • FIG. 1 is a schematic structural view of a wind turbine set according to an embodiment of the present invention
  • FIG. 2 is a side view of FIG. 1
  • FIG. 3 is a schematic structural view of the wind turbine blade of FIG. It is a schematic view of the top view of Figure 3.
  • the wind turbine blade provided in the embodiment of the present invention comprises a blade root section 6, a tip section 5 and a connecting blade root section 6 and a tip section 5, and the strength is smaller than the joint of the blade root section 6 and the tip section 5.
  • the wind turbine blade provided by the invention is divided into a blade root segment 6, a tip segment 5 and a connecting member.
  • a strong wind such as a typhoon
  • the strength is smaller than the blade root section 6 and the tip section 5, so that the joint breaks and the tip section 5 falls off.
  • the shedding of the tip section 5 causes the diameter of the entire wind turbine blade to be reduced, and the sweeping area of the entire wind turbine blade is reduced, thereby reducing the bending load of the entire wind turbine blade against the tower 3 and the foundation 4.
  • the above-mentioned blades allow the tower 3 and the base 4 to be preserved in a strong wind environment such as a typhoon, thereby reducing the loss of the entire wind turbine.
  • the connecting member functions to connect the blade root segment 6 and the tip segment 5, and the strength is lower than the strength of the above two, and the blade is broken under the action of strong wind. 6 is separated from the tip segment 5.
  • the connecting members having a lower strength than the above-mentioned blade root segment 6 and tip segment 5 are within the protection scope of the patent, specifically, it may be a threaded connector, a connecting pin or the like.
  • This embodiment provides a connector, please refer to 5-6, the connector includes a flange 10 disposed on the blade root section 6, a flange 9 on the tip segment 5, and a connecting flange 9 and a flange 10.
  • a moment load sensor may be disposed at the junction of the tip section 5 and the blade section 6 for collecting the bend between the tip section 5 and the blade root section 6.
  • the moment signal transmits the bending moment signal to the controller, and the controller receives the signal transmitted by the bending moment load sensor and then controls the bolt to burst, thereby realizing the failure of the bolt.
  • the length of the blade root segment 6 is longer than the length of the blade tip segment 5.
  • the length of the blade root segment 6 is 2/3 of the length of the entire wind turbine blade, and the blade tip segment 5 The length is 1/3 of the length of the wind turbine blade.
  • the ratio of the length between the blade root segment 6 and the tip segment 5 can be appropriately adjusted according to the actual working environment, and is not limited to the above enumerated cases.
  • the diameter of the wind wheel is 77m and the height of the tower is 65m.
  • a blade maintenance window 7 is provided at a portion where the blade root section 6 is connected to the blade tip section 5.
  • a fiberglass cloth for reinforcing the joint is placed at the junction of the blade tip section 5 and the blade root section 6.
  • the surface of the fiberglass cloth is a smooth surface for the final spraying of the entire wind turbine blade.
  • the present invention also provides a wind turbine.
  • the wind turbine includes a foundation 4, a tower 3, a hub assembly 1, a machine grab 2, and The wind turbine blade, wherein the wind turbine blade is the wind turbine blade provided in the above embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

L'invention porte sur une pale pour un ensemble génératrice éolienne, qui comprend un segment de pied de pale (6), un segment de bout de pale (5) et une pièce de liaison qui relie le segment de pied de pale (6) au segment de bout de pale (5), et qui a une résistance mécanique inférieure à celle des deux segments. Lorsque la pale de l'éolienne est soumise à des rafales de vents forts, telles qu'un typhon, etc., si la charge sur la pièce de liaison excède celle à laquelle la pièce peut résister, la pièce de liaison se brise, pour que le segment de bout de pale tombe. Le segment de bout de pale, en tombant, réduit le diamètre de l'ensemble de la pale de l'éolienne et réduit la zone balayée par le rotor de l'éolienne, en réduisant ainsi l'effort de flexion exercée sur le bâti de la tour et sur la base par la pale complète. Dans les environnements très venteux, comme dans un typhon, etc., la pale de l'éolienne protège le bâti de la tour et la base, en réduisant la perte affectant l'ensemble de l'éolienne. L'invention porte aussi sur une éolienne.
PCT/CN2012/077209 2011-07-05 2012-06-20 Pale pour ensemble génératrice éolienne et ensemble génératrice éolienne WO2013004125A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110187786.9 2011-07-05
CN2011101877869A CN102269117B (zh) 2011-07-05 2011-07-05 风电机组桨叶及风电机组

Publications (1)

Publication Number Publication Date
WO2013004125A1 true WO2013004125A1 (fr) 2013-01-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/077209 WO2013004125A1 (fr) 2011-07-05 2012-06-20 Pale pour ensemble génératrice éolienne et ensemble génératrice éolienne

Country Status (2)

Country Link
CN (1) CN102269117B (fr)
WO (1) WO2013004125A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10551586B2 (en) 2014-01-31 2020-02-04 Senko Advanced Components, Inc Integrated fiber optic cable fan-out connector

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102269117B (zh) * 2011-07-05 2013-09-18 浙江运达风电股份有限公司 风电机组桨叶及风电机组
DE102014223640A1 (de) * 2014-11-19 2016-05-19 Wobben Properties Gmbh Auslegung einer Windenergieanlage
CN104595109B (zh) * 2015-01-07 2017-11-10 中国能源建设集团广东省电力设计研究院有限公司 风力发电机应对强风的辅助系统及方法
CN105156266A (zh) * 2015-09-14 2015-12-16 华锐风电科技(集团)股份有限公司 风电机组叶片及风电机组
CN105822495B (zh) * 2016-04-01 2018-09-25 长乐致远技术开发有限公司 一种风电机组
US10451031B2 (en) * 2016-06-17 2019-10-22 General Electric Company Wind turbine rotor blade
CN107620668B (zh) * 2017-09-12 2024-01-05 明阳智慧能源集团股份公司 一种抗台风型海上风机分段叶片
CN111791400B (zh) * 2020-04-30 2022-04-26 株洲时代新材料科技股份有限公司 一种风电叶片模具分段兼容设计方法
CN113685307A (zh) * 2021-09-23 2021-11-23 中国华能集团清洁能源技术研究院有限公司 一种可折叠叶片和风电机组

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN101457739A (zh) * 2007-09-14 2009-06-17 歌美飒创新技术公司 传感器化的叶片接头
CN101493069A (zh) * 2007-12-27 2009-07-29 通用电气公司 用于风力涡轮机的适应性转子叶片
US20110142667A1 (en) * 2010-08-30 2011-06-16 General Electric Company Wind turbine rotor blade assembly having an access window and related methods
CN102269117A (zh) * 2011-07-05 2011-12-07 浙江运达风电股份有限公司 风电机组桨叶及风电机组
CN202157898U (zh) * 2011-07-05 2012-03-07 浙江运达风电股份有限公司 风电机组桨叶及风电机组

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101457739A (zh) * 2007-09-14 2009-06-17 歌美飒创新技术公司 传感器化的叶片接头
CN101493069A (zh) * 2007-12-27 2009-07-29 通用电气公司 用于风力涡轮机的适应性转子叶片
US20110142667A1 (en) * 2010-08-30 2011-06-16 General Electric Company Wind turbine rotor blade assembly having an access window and related methods
CN102269117A (zh) * 2011-07-05 2011-12-07 浙江运达风电股份有限公司 风电机组桨叶及风电机组
CN202157898U (zh) * 2011-07-05 2012-03-07 浙江运达风电股份有限公司 风电机组桨叶及风电机组

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10551586B2 (en) 2014-01-31 2020-02-04 Senko Advanced Components, Inc Integrated fiber optic cable fan-out connector

Also Published As

Publication number Publication date
CN102269117B (zh) 2013-09-18
CN102269117A (zh) 2011-12-07

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