CN101571101B - Array type horizontal shaft wind-power blade - Google Patents
Array type horizontal shaft wind-power blade Download PDFInfo
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- CN101571101B CN101571101B CN200810105743XA CN200810105743A CN101571101B CN 101571101 B CN101571101 B CN 101571101B CN 200810105743X A CN200810105743X A CN 200810105743XA CN 200810105743 A CN200810105743 A CN 200810105743A CN 101571101 B CN101571101 B CN 101571101B
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- blade
- wind
- array type
- power blade
- horizontal shaft
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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
Abstract
The invention relates to an array type horizontal shaft wind-power blade. The transverse cutting section of the wind-power blade vertical to the spanwise direction is of a typical airfoil shape of a wind turbine, wherein the wind-power blade is divided into a front part and a rear part from the root along the spanwise direction, a contact surface of the two parts along the split crack is a matchedchamfered surface, wherein one part can be rotatably adjusted, and the front part and the rear part are arrayed together to form an array type wind-power blade. An adjusting mechanism of the adjustab le part is arranged in an external wheel hub. The array type horizontal shaft wind-power blade has main advantages that: according to the wind field situation, the adjustable part can be rotated so asto reach the aim of changing the camber and effective attack angle; the array type horizontal shaft wind-power blade has strong adaptability to incoming flow and high pneumatic efficiency, obviously enhances the pneumatic performance of a root area, and effectively performs powder control adjustment; the brake is more simple and effective under the condition of strong wind and utmost limit; arrayadjustment needs low power, the control mechanism is simple and convenient, an internal mechanism of the blade is simple, the weight is effectively reduced and the strength is improved.
Description
Technical field
The present invention relates to the general design method field of horizontal-shaft wind turbine blade, particularly a kind of array type horizontal shaft wind-power blade.
Background technique
Because the worsening shortages of fossil energy (oil, coal etc.) and the environmental pollution problem that brings thereof, the development and use of clean reproducible energy have become human common recognition, cause the growing interest and the attention of countries in the world.Wind-power electricity generation is a kind of clean reproducible energy of at present tool commercial value, and development abroad is morning and technology maturation, and China's wind-powered electricity generation industry development is slow relatively, has given great support but classify it as renewable energy sources developing focus after 2005.Research and develop, produced multiple wind-driven generator miscellaneous at present both at home and abroad.
Present common wind-driven generator, what great majority used is " horizontal-shaft wind turbine ", its main principle is to utilize aerodynamic characteristics; Design provides a plurality of cross sections aerofoil profile; Change into three dimendional blade along the exhibition vector product, when air stream is crossed blade, thereby blade is produced moment owing to there are pressure difference in blade back, leaf basin; Order about blade rotation, this mechanical energy is converted into electric energy through generator.
Because natural wind regime is changeable, the attitude of wind electricity blade is difficult to all produce the optimal air dynamic efficiency with the wind regime variation in rotation.People have taked multiple mode to come the attitude of adjusting vane, to adapt to the wind regime situation of change; And, rotate around main shaft through blade integral and to adapt to the then great energy consumption of needs of incoming flow situation along with blade radius is increasing.Referring to No. the 200710135507.8th, Chinese patent.
Present pneumatic equipment blades made root has generally adopted circle or thick wing type cross section for guaranteeing enough intensity, and such shape makes that the aeroperformance in blade root district is very poor, for the almost not contribution of moment of torsion of blade.
Fierce or wind direction changes under the violent situation at wind speed, and inappropriate attitude of facining the wind is damaged pneumatic equipment blades made easily, and excessive power also can cause damage to the wind-driven generator main frame simultaneously.Braking device generally adopts tip segment to rotate to change angle of attack adaptability to axle around exhibition, can cause tip segment mechanism complicacy like this, gain in weight, reduces blade strength.In addition, then need expend very big power through blade main shaft unitary rotation method.
Existing controlling mechanism is arranged on blade interior more, has both increased the weight of blade, is unfavorable for the raising of blade strength again, when production and processing, also causes difficulty, can be referring to No. the 200620137757.6th, Chinese patent.The march-past blade can place wheel hub inner operating mechanism, does not influence weight, intensity and the processing etc. of blade itself.
Summary of the invention
The objective of the invention is to, it is big to overcome in the middle of the existing technology leaf weight, complex structure, and shortcoming such as intensity is low, and difficulty of processing is big, thus a kind of array type horizontal shaft wind-power blade is provided.
For solving the problems of the technologies described above, a kind of array type horizontal shaft wind-power blade that technological scheme of the present invention provided:
Said wind electricity blade perpendicular to exhibition to the crosscut section be wind energy conversion system typical case aerofoil profile; Wherein, Said wind electricity blade is risen along exhibition to the blade apportion being become two parts by root; Wherein a part can be rotated adjusting, and the dimension scale of two parts can be carried out suitable dispensing, and front and back two-part are arranged and formed the march-past wind electricity blade together.Said wind electricity blade is applicable to the Blade Design of the horizontal axis wind-driven generator of all size and power range; These two parts along exhibition to the arc surface of surface of contact for cooperating at tear seam place; Be convenient to regulate, greatly reduce the power that adjusting need be used, wherein; The controlling mechanism of variable partition is arranged in the external hub, through the mechanism in the wheel hub variable partition is operated.
Wherein, Said wind electricity blade is risen along exhibition by root and becomes former and later two parts to connecting apportion; The root of one of them part is provided with a fixed flange and external hub is connected, and correspondingly, the root of another part is provided with a rotating spindle; Said rotating spindle links to each other with external hub, in the external hub that controlling mechanism is arranged on rotating spindle links to each other.
Wherein, Said wind electricity blade tear seam main consideration blade strength and blade interior mechanism headspace be set; The unsuitable great disparity of two-part size is excessive before and after the blade, and as a kind of preferred, tear seam is provided with along blade section string of a musical instrument direction apart from the about 2/3-1/3 scope of leading edge.
The invention has the advantages that:
(1) a kind of array type horizontal shaft wind-power blade of the present invention; Can be according to the size and Orientation of incoming flow wind speed; The angle of yaw of corresponding adjustment rotating part; The camber and the angle of attack of adjustment aerofoil profile front and back section with respect to incoming flow through increasing aerofoil profile produce maximum aerodynamic best effective angle of attack to reach, thereby reach the purpose that improves power factor.
(2) a kind of array type horizontal shaft wind-power blade of the present invention can to make it aerodynamic quality better through regulating sectional shape, and reduce the loss of flowed energy.
(3) a kind of array type horizontal shaft wind-power blade of the present invention under limited conditions, can be adjusted the attitude of blade easily, reaches brake, prevents that power from surpassing the function of protection such as generator tolerance limit wind energy conversion system.
(4) a kind of array type horizontal shaft wind-power blade of the present invention, the just part of whole blade that mechanism regulates, compared with regulating whole blade, apportion is regulated power demand and is significantly reduced.
(5) a kind of array type horizontal shaft wind-power blade of the present invention, controlling mechanism places in the wheel hub storehouse, is connected with the root of blade adjustable part, makes control mechanism simple and convenient, and blade interior mechanism is simple, has effectively alleviated leaf weight and has improved intensity.
Description of drawings
Fig. 1 is the overall schematic of the adjustable march-past blade in rear portion of the present invention.
Fig. 2 is the cross-section schematic representation of the adjustable march-past blade in rear portion of the present invention.
Fig. 3 is the main schematic representation of the adjustable march-past blade in rear portion of the present invention.
Fig. 4 is the angle adjustment schematic representation of the adjustable march-past blade trailing edge in rear portion of the present invention.
Fig. 5 is the overall schematic of the anterior adjustable march-past blade of the present invention.
Fig. 6 is the cross-section schematic representation of the anterior adjustable march-past blade of the present invention.
Fig. 7 is the main schematic representation of the anterior adjustable march-past blade of the present invention.
Fig. 8 is the angle adjustment schematic representation of the anterior adjustable march-past blade inlet edge of the present invention.
Embodiment
Further specify technological scheme provided by the present invention below in conjunction with embodiment.
Like Fig. 1,2, shown in 3; The blade array type horizontal shaft wind-power blade perpendicular to exhibition to the crosscut section be wind energy conversion system typical case aerofoil profile, wind electricity blade is risen along exhibition to the penetrating blade apportion is become former and later two parts by root, the dimension scale of two parts can be carried out suitable dispensing; For example; The area of variable partition increases, and the blade adjustments effect is increased, but the power that the corresponding increase of meeting is regulated.The present invention is applicable to the Blade Design of the horizontal axis wind-driven generator of all size and power range, these two parts along exhibition to the arc surface of surface of contact for cooperating at tear seam place, be convenient to regulate, greatly reduce the power that adjusting need be used, as shown in Figure 4.
One fixed flange is set anterior root and external hub is connected, and correspondingly, the root at rear portion is provided with a rotating spindle, and rotating spindle links to each other with external hub, in the external hub that controlling mechanism is arranged on rotating spindle links to each other.
Wherein, said wind electricity blade tear seam main consideration blade strength and blade interior mechanism headspace be set, the unsuitable great disparity of two-part size is excessive before and after the blade, tear seam is provided with along blade section string of a musical instrument direction apart from the about 2/3-1/3 scope of leading edge.
Array type horizontal shaft wind-power blade; Can be according to the size and Orientation of incoming flow wind speed; The angle of yaw of corresponding adjustment rotating part; The camber and the angle of attack of adjustment aerofoil profile front and back section with respect to incoming flow through increasing aerofoil profile produce maximum aerodynamic best effective angle of attack to reach, thereby reach the purpose that improves power factor.
It is better that array type horizontal shaft wind-power blade can make it aerodynamic quality through the adjusting sectional shape, and reduce the loss of flowed energy.
Array type horizontal shaft wind-power blade under limited conditions, can be adjusted the attitude of blade easily, reaches brake, prevents that power from surpassing the function of protection such as generator tolerance limit wind energy conversion system.
Array type horizontal shaft wind-power blade, the just part of whole blade that mechanism regulates, compared with regulating whole blade, apportion is regulated power demand and is significantly reduced.
Array type horizontal shaft wind-power blade, controlling mechanism place in the wheel hub storehouse, are connected with the root of blade adjustable part, make control mechanism simple and convenient, and blade interior mechanism is simple, have effectively alleviated leaf weight and have improved intensity.
Fig. 5,6,7,8 is the schematic representation of anterior adjustable march-past blade, and principle is identical with the adjustable apportion blade in rear portion.
Can find out to specific descriptions of the present invention that from above-mentioned leaf weight was big in the middle of technological scheme of the present invention can solve existing technology fully, regulate the control difficulty; Complex structure, shortcoming such as intensity is low, and difficulty of processing is big; Make the wind electricity blade high-efficiency operation, adapt to changeable wind field situation.
In sum, be merely preferred embodiment of the present invention, when can not with qualification protection scope of the present invention; The equalization of promptly doing according to claim of the present invention changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Claims (1)
1. array type horizontal shaft wind-power blade; This wind electricity blade perpendicular to exhibition to the crosscut section be wind energy conversion system typical case aerofoil profile; It is characterized in that; Said wind electricity blade is risen along exhibition to the blade apportion being become two parts by root, these two parts along exhibition to the arc surface of surface of contact for cooperating at tear seam place, said tear seam is arranged on along blade section string of a musical instrument direction apart from the leading edge 2/3-1/3 scope;
Said wind electricity blade is risen along exhibition by root and becomes former and later two parts to connecting apportion; The root of one of them part is provided with a fixed flange and external hub is connected; Correspondingly; The root of another part is provided with a rotating spindle, and said rotating spindle links to each other with external hub, in the external hub that controlling mechanism is arranged on rotating spindle links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810105743XA CN101571101B (en) | 2008-04-30 | 2008-04-30 | Array type horizontal shaft wind-power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810105743XA CN101571101B (en) | 2008-04-30 | 2008-04-30 | Array type horizontal shaft wind-power blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101571101A CN101571101A (en) | 2009-11-04 |
| CN101571101B true CN101571101B (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810105743XA Expired - Fee Related CN101571101B (en) | 2008-04-30 | 2008-04-30 | Array type horizontal shaft wind-power blade |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107767B (en) * | 2021-04-09 | 2022-05-17 | 中国华能集团清洁能源技术研究院有限公司 | Environment self-adaptive blade and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019691A1 (en) * | 1979-05-25 | 1980-12-10 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Composite rotor blade |
| DE3126677A1 (en) * | 1981-07-07 | 1983-01-20 | Erno-Raumfahrttechnik Gmbh, 2800 Bremen | Rotor blade design for high-speed rotors |
| US5527152A (en) * | 1994-03-04 | 1996-06-18 | Northern Power Systems, Inc. | Advanced wind turbine with lift cancelling aileron for shutdown |
| CN1340662A (en) * | 2000-08-26 | 2002-03-20 | 张近锡 | Motive power generating device by use of wind force |
| CN1360666A (en) * | 1999-10-11 | 2002-07-24 | 爱罗丁工程有限公司 | Individual blade adjustment for wind turbines |
-
2008
- 2008-04-30 CN CN200810105743XA patent/CN101571101B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019691A1 (en) * | 1979-05-25 | 1980-12-10 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Composite rotor blade |
| DE3126677A1 (en) * | 1981-07-07 | 1983-01-20 | Erno-Raumfahrttechnik Gmbh, 2800 Bremen | Rotor blade design for high-speed rotors |
| US5527152A (en) * | 1994-03-04 | 1996-06-18 | Northern Power Systems, Inc. | Advanced wind turbine with lift cancelling aileron for shutdown |
| CN1360666A (en) * | 1999-10-11 | 2002-07-24 | 爱罗丁工程有限公司 | Individual blade adjustment for wind turbines |
| CN1340662A (en) * | 2000-08-26 | 2002-03-20 | 张近锡 | Motive power generating device by use of wind force |
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| CN101571101A (en) | 2009-11-04 |
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Granted publication date: 20120307 Termination date: 20140430 |