CN102720632A - Large wind generating set blade and application thereof - Google Patents

Large wind generating set blade and application thereof Download PDF

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Publication number
CN102720632A
CN102720632A CN2012102253621A CN201210225362A CN102720632A CN 102720632 A CN102720632 A CN 102720632A CN 2012102253621 A CN2012102253621 A CN 2012102253621A CN 201210225362 A CN201210225362 A CN 201210225362A CN 102720632 A CN102720632 A CN 102720632A
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CN
China
Prior art keywords
blade
wind turbines
scale wind
folding
foldable
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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.)
Pending
Application number
CN2012102253621A
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Chinese (zh)
Inventor
杨怀宇
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Guodian United Power Technology Co Ltd
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Guodian United Power Technology Co Ltd
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Publication date
Application filed by Guodian United Power Technology Co Ltd filed Critical Guodian United Power Technology Co Ltd
Priority to CN2012102253621A priority Critical patent/CN102720632A/en
Publication of CN102720632A publication Critical patent/CN102720632A/en
Pending legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The invention discloses a large wind generating set blade and the application thereof; the blade is a foldable blade in the length direction of the blade; and the invention also discloses the application of the blade in an anti-typhoon working condition. According to the invention, because the structural design of the foldable blade is adopted, the action force arm of the stress of the blade can be greatly reduced; meanwhile, after the blade is folded, the lifting force and the resistance on the top section of the blade is opposite in direction, so that the stress on the top section and the bottom section of the blade are partially offset, and the load of the root of the blade and a set is reduced; and consequently, the ultimate load bearing capability of the set and the structural strength of the blade are not needed to be greatly improved under the typhoon working condition, only local treatment on a folded part is needed, so that the cost can be effectively controlled while the safety is ensured. The invention can be widely applied to a large horizontal shaft wind generating set.

Description

A kind of Large-scale Wind Turbines blade and application thereof
Technical field
The present invention relates to a kind of Large-scale Wind Turbines blade and application thereof.
Background technique
Wind-power electricity generation has obtained develop rapidly, especially in China in recent years as one of the most ripe renewable energy power generation mode of present technology.By the end of the year 2010, China has become the maximum country of world's wind-powered electricity generation electric motor power.The wind-resources of China distributes and is inhomogeneous; Be distributed in three northern areas of China in the land resource set, far away from power load center, east, wind-resources mainly is distributed in southeastern coast in the zone preferably near the power load center, east; But, cause the wind-powered electricity generation exploitation comparatively slow because this zone faces the threat of typhoon.Present wind generating technology originates from Europe, relevant design standard and standard also basically with European wind regime as standard, and there is not the typhoon problem in Europe, therefore present wind power generating set is not all considered Anti-Typhoon problem basically.But superelevation wind speed (more than the 70m/s) when in fact typhoon arrives and fast-changing wind direction cause serious threat all can for the safety of wind-powered electricity generation unit.Attacked Cangnan, Zhejiang wind energy turbine set like typhoon Sang Mei front in 2006, the highest wind-force had reached 19 grades at that time.Cause wind energy turbine set 28 typhoon power generator groups in Cangnan to fall 20, other 8 also impaired in various degree, and whole wind field is almost scrapped.Therefore, how to carry out Anti-Typhoon wind power generating set design and caused increasing wind-powered electricity generation unit artificer's attention.
Large-scale Wind Turbines is the horizontal axis design at present, and promptly the wind wheel plane of rotation is perpendicular to the incoming flow wind direction.And used wind energy acquisition equipment, i.e. blade, utilization be that air flow stream is crossed the principle that blade produces lift and resistance and driven the wind wheel rotation, thereby with wind energy transformation be the mechanical energy of impeller.According to the aerofoil profile principle, lift is directly proportional with the quadratic power of wind speed with the size of resistance, and the suffered torque load of root of blade equals lift and the resistance integration along the length of blade direction.The blade of Large-scale Wind Turbines is very long; The wind generator set blade length of single-machine capacity 3MW is 49 to 60 meters at present; And the wind generator set blade length of single-machine capacity 6MW will reach 75 to 80 meters; When typhoon comes temporarily, high wind speed will cause the suffered load of unit to compare non-typhoon operating mode with turbulivity improving a lot.Address the above problem, the simplest method is to improve the design limit of unit, the ultimate bearing strength of reinforced blade and each structure.Can cause the unit cost significantly to increase but do like this, improve the degree electricity cost of unit generation, be not desirable plan.
Summary of the invention
The object of the present invention is to provide a kind of Large-scale Wind Turbines blade, the limit load of blower fan in the time of can reducing the typhoon operating mode, safe and reliable, cost is low.
Another object of the present invention is to provide the application of above-mentioned Large-scale Wind Turbines blade.
To achieve these goals, the present invention adopts following technological scheme:
A kind of Large-scale Wind Turbines blade is the foldable type blade on the length of blade direction.
Further, the folding position of said blade is arranged on apart from blade tip 15% to 50% length of blade place.
Further, said foldable type blade comprises section at the bottom of the blade, blade top section, comprises the fold mechanism of foldable shaft; Section and blade top section connects through foldable shaft at the bottom of the said blade, and blade top section can be rotated around foldable shaft.
Further, said fold mechanism also comprises: the folding drive unit that driven vane top section is rotated around foldable shaft in folding process; The locking device that keeps the blade current state when being used for the folding fully or full open position of blade; Its signal is used to discern the folding position state sensor of blade current state and jackknife action control.
Further, said folding drive unit is motor drive unit or fluid pressure drive device.
Further, said locking device is mechanical locking, hydraulic lock assembly or electromagnetic locking device.
Further, said Large-scale Wind Turbines is the horizontal axis wind-driven generator group.
Above-mentioned Large-scale Wind Turbines blade can be applicable in the Anti-Typhoon operating mode.
The present invention is owing to take above technological scheme, and it has the following advantages:
1, the present invention is owing to adopt the collapsible blade structural design, through in the longitudinal direction folding of blade, can reduce the acting force arm of vane stress greatly.Simultaneously, can make the direction of suffered lift of blade top section and resistance reverse behind the leaf folding, thereby make blade top section and the stressed of end section have part to cancel out each other, reduce the load of root of blade and unit; Therefore, unit ultimate bearing capacity and blade structure intensity needn't significantly increase because of the typhoon operating mode, only need fold section is done local the processing, and under the situation that guarantees safety, cost can be effectively controlled.
2, Large-scale Wind Turbines blade of the present invention also can be used for non-typhoon operating mode, as for length at the large-scale blade more than 60 meters, also can adopt folded state in the transportation process, reduce requirement, thereby practice thrift cost of transportation greatly traffic condition.
3, the present invention can be widely used in the large-scale horizontal axis wind-driven generator group.
Through accompanying drawing and embodiment, technological scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 is the structural representation (full open position) of Large-scale Wind Turbines blade of the present invention;
Fig. 2 is the structural representation (partially folded state A) of Large-scale Wind Turbines blade of the present invention;
Fig. 3 is the structural representation (partially folded state B) of Large-scale Wind Turbines blade of the present invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Like Fig. 1,2, shown in 3, Large-scale Wind Turbines blade of the present invention is the foldable type blade on the length of blade direction.By normal flow design intact leaf aerodynamic configuration.The folding position can be arranged on apart from blade tip 15% to 50% length of blade place according to actual needs.The foldable type blade comprises section at the bottom of the blade, blade top section, comprises the fold mechanism of foldable shaft; Section and blade top section connects through foldable shaft at the bottom of the blade, and blade top section can be rotated around foldable shaft.Fold mechanism also comprises folding drive unit, locking device and folding position state sensor.Wherein, folding drive unit driven vane top section is rotated around foldable shaft in folding process, can be motor drive unit, also can be fluid pressure drive device; Locking device keeps the current state of blade when being used for the folding fully or full open position of blade, can be mechanical locking, hydraulic lock assembly or electromagnetic locking device; Folding position state sensor signal is used to discern the control of blade current states and jackknife action.
Large-scale Wind Turbines of the present invention is the horizontal axis wind-driven generator group.
When non-typhoon operating mode, blade keeps full open position.At this moment blade profile is as good as with general integral design blade, and section suffered wind in blade top carries through locking device and passes to section at the bottom of the blade.The design of locking device will guarantee that blade between the section relative movement is not taking place at the bottom of this state lower blade top section and the blade.Before typhoon arrived, locking device unlocked, and folding drive unit driven vane top section is rotated around foldable shaft, reaches complete folded state until blade, the locking device locking, and guarantee that blade comes interim blade to be in complete folded state at typhoon always.After typhoon left, locking device unlocked, and folding drive unit driven vane top section is rotated around foldable shaft, makes blade recover full open position, and locking device locks once more, and blower fan gets into non-typhoon operating mode operation once more.
What should explain at last is: the above is merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technological scheme that previous embodiment is put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. a Large-scale Wind Turbines blade is characterized in that, is the foldable type blade on the length of blade direction.
2. Large-scale Wind Turbines blade according to claim 1 is characterized in that, the folding position of said blade is arranged on apart from blade tip 15% to 50% length of blade place.
3. Large-scale Wind Turbines blade according to claim 1 is characterized in that, said foldable type blade comprises section at the bottom of the blade, blade top section, comprises the fold mechanism of foldable shaft; Section and blade top section connects through foldable shaft at the bottom of the said blade, and blade top section can be rotated around foldable shaft.
4. Large-scale Wind Turbines blade according to claim 3 is characterized in that, said fold mechanism also comprises:
The folding drive unit that driven vane top section is rotated around foldable shaft in folding process;
The locking device that keeps the blade current state when being used for the folding fully or full open position of blade;
Its signal is used to discern the folding position state sensor of blade current state and jackknife action control.
5. Large-scale Wind Turbines blade according to claim 4 is characterized in that, said folding drive unit is motor drive unit or fluid pressure drive device.
6. Large-scale Wind Turbines blade according to claim 4 is characterized in that, said locking device is mechanical locking, hydraulic lock assembly or electromagnetic locking device.
7. want each described Large-scale Wind Turbines blade of 1-6 according to right, it is characterized in that said Large-scale Wind Turbines is the horizontal axis wind-driven generator group.
8. according to each described Large-scale Wind Turbines blade application in Anti-Typhoon operating mode of claim 1-7.
CN2012102253621A 2012-06-29 2012-06-29 Large wind generating set blade and application thereof Pending CN102720632A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012102253621A CN102720632A (en) 2012-06-29 2012-06-29 Large wind generating set blade and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012102253621A CN102720632A (en) 2012-06-29 2012-06-29 Large wind generating set blade and application thereof

Publications (1)

Publication Number Publication Date
CN102720632A true CN102720632A (en) 2012-10-10

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104018996A (en) * 2014-05-30 2014-09-03 西安交通大学 Wind turbine blade with automatic windward area adjustment function
CN104234941A (en) * 2013-06-24 2014-12-24 王智勇 Foldable blade of wind driven generator
CN104234925A (en) * 2014-08-20 2014-12-24 清华大学 Foldable dual-row coaxial-blade wind driven generator device
CN104454377A (en) * 2013-09-23 2015-03-25 王智勇 Wind driven generator with movable blades
CN105652772A (en) * 2016-03-12 2016-06-08 远景能源(江苏)有限公司 Intelligent monitoring system for transportation of large wind turbine generator blades
CN110107451A (en) * 2019-05-17 2019-08-09 杭州虹妍服饰有限公司 A kind of wind turbine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118255A (en) * 1989-09-18 1992-06-02 Angel Moreno Motor
CN1664358A (en) * 2004-03-02 2005-09-07 金东龙 Wind driven power generating system
CN102348889A (en) * 2008-08-22 2012-02-08 自然动力概念公司 Folding blade turbine
CN202789316U (en) * 2012-06-29 2013-03-13 国电联合动力技术有限公司 Large-scale wind turbine generator system vane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118255A (en) * 1989-09-18 1992-06-02 Angel Moreno Motor
CN1664358A (en) * 2004-03-02 2005-09-07 金东龙 Wind driven power generating system
CN102348889A (en) * 2008-08-22 2012-02-08 自然动力概念公司 Folding blade turbine
CN202789316U (en) * 2012-06-29 2013-03-13 国电联合动力技术有限公司 Large-scale wind turbine generator system vane

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104234941A (en) * 2013-06-24 2014-12-24 王智勇 Foldable blade of wind driven generator
CN104454377A (en) * 2013-09-23 2015-03-25 王智勇 Wind driven generator with movable blades
CN104018996A (en) * 2014-05-30 2014-09-03 西安交通大学 Wind turbine blade with automatic windward area adjustment function
CN104018996B (en) * 2014-05-30 2016-06-29 西安交通大学 A kind of blade of wind-driven generator for automatically adjusting front face area
CN104234925A (en) * 2014-08-20 2014-12-24 清华大学 Foldable dual-row coaxial-blade wind driven generator device
CN104234925B (en) * 2014-08-20 2017-05-17 清华大学 Foldable dual-row coaxial-blade wind driven generator device
CN105652772A (en) * 2016-03-12 2016-06-08 远景能源(江苏)有限公司 Intelligent monitoring system for transportation of large wind turbine generator blades
CN110107451A (en) * 2019-05-17 2019-08-09 杭州虹妍服饰有限公司 A kind of wind turbine
CN110107451B (en) * 2019-05-17 2020-12-25 广西电网有限责任公司河池供电局 Wind turbine

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Application publication date: 20121010

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