CN101865077A - Fan blade structure of a wind generator - Google Patents
Fan blade structure of a wind generator Download PDFInfo
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- CN101865077A CN101865077A CN201010211238A CN201010211238A CN101865077A CN 101865077 A CN101865077 A CN 101865077A CN 201010211238 A CN201010211238 A CN 201010211238A CN 201010211238 A CN201010211238 A CN 201010211238A CN 101865077 A CN101865077 A CN 101865077A
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- fan blade
- wind
- blade
- driven generator
- flange
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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 discloses a fan blade structure of a wind generator, which comprises a fan blade (1) with a lift wing surface, and a flange (2) for fixedly connecting with a hub (3) of the wind generator, wherein the fan blade (1) with a lift wing surface comprises a first fan blade (1.1) and a second fan blade (1.2); the inner side surface of the first fan blade (1.1) and the inner side surface of the second fan blade (1.2) are opposite to each other with a gap therebetween; the first fan blade (1.1) is fixedly connected with one end of the second fan blade (1.2) to form an integral body and is fixedly connected with the flange (2); and the lift wing surface (1.1.1) of the first fan blade (1.1) and the lift wing surface (1.2.1) of the second fan blade (1.2) are arranged in the same direction. The wind generator using the fan blade structure has good dynamic performance, can effectively enhance the utilization rate of wind power, and can greatly shorten the length of the fan blade.
Description
Technical field
The present invention relates to wind power generation field, particularly a kind of blade structure that is used for MW class wind turbine.
Background technique
Wind-driven generator is the dynamic power machine that wind energy is converted to mechanical work and then is converted into electric energy, and its core technology is exactly to make the wind energy utilization maximization as much as possible.Fan blade is most important parts of wind-driven generator, not only wants smooth operation, also should have the maximum power performance, starts the wind-driven generator rotation when hanging down wind speed, and is issued to the required rotating speed of rated power in minimum wind force intensity.Existing MW class wind turbine mostly is three blade oar type structures greatly, its fan blade generally is made up of the changeover portion two-part that have the lift aerofoil and be transited into blade root portion cylinder gradually, and fan blade is fixedlyed connected with the wheel hub of generator, the length of every fan blade all more than 20 meters (for example, 2 blade of MW class wind turbine always are about 42-45 rice), and generator power is big more, and then the length of fan blade is long more.Difficulty is not only made, transported to fan blade after increasing, and installation difficulty also increases.Therefore, under the prerequisite that guarantees generator power, making wind-driven generator have short as far as possible fan blade length is a big technical barrier of wind power generation field.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of power performance good, can effectively improve wind energy utilization, and can shorten the blade structure of the wind-driven generator of length of blade greatly.
The present invention addresses the above problem the technological scheme that is adopted: a kind of blade structure of wind-driven generator, comprise fan blade with lift aerofoil and the flange that is used for fixedlying connected with the wheel hub of described wind-driven generator, described fan blade with lift aerofoil is made up of first fan blade and second fan blade, the inner side surface of the inner side surface of described first fan blade and second fan blade is oppositely arranged and distance is arranged, one end of described first fan blade and second fan blade is connected to one, and fixedly connected with flange, and the lift aerofoil of the lift aerofoil of described first fan blade and second fan blade is provided with in the same way.
Compared with prior art, the invention has the advantages that: the blade structure of this wind-driven generator is made up of two fan blades with lift aerofoil, and two fan blades are all fixedlyed connected with the wheel hub of described wind-driven generator by flange; Double-deck blade structure makes the lift of fan blade increase by one times, has improved utilization ratio of wind energy greatly, and this blade structure has better power performance, can start the wind-driven generator rotation when low wind speed.The most important thing is, under the prerequisite that guarantees generator power, use the fan blade length of the wind-driven generator of this blade structure to shorten, not only reduced manufacturing, transport difficulty, also reduced installation difficulty.And can further reduce the height of wind tower as the case may be, save material and construction cost.
As improvement, described first fan blade and plane, the second fan blade place are arranged in parallel, and an end of described first fan blade and second fan blade is connected to one by vertically disposed link and fixedlys connected with the wheel hub of described wind-driven generator by flange.Like this, easier for installation, and two fan blades can not produce interference, and it is more reliable to work.
As improvement, be provided with the grid structure that plurality of strengthening ribs connects between described two fan blades.Like this, can strengthen the bulk strength of fan blade, increase the rated wind velocity of fan blade simultaneously.
As preferably, the geometrical shape of the aerofoil profile of described two fan blades is identical.Like this, not only processing of leaves is more convenient, and can guarantee that the operation of fan blade is more stable.
Description of drawings
The structural representation of Fig. 1 wind-driven generator.
The main TV structure schematic representation of the blade structure of Fig. 2 wind-driven generator of the present invention.
The attached TV structure schematic representation of the blade structure of Fig. 3 wind-driven generator of the present invention.
The A-A of Fig. 4 Fig. 3 analyses and observe the structure for amplifying schematic representation.
The B-B of Fig. 5 Fig. 3 analyses and observe the structure for amplifying schematic representation.
Among Fig. 1-5: 1, fan blade, 1.1, first fan blade, the lift aerofoil of 1.1.1 first fan blade, 1.2, second fan blade, the lift aerofoil of 1.2.1 second fan blade, 2, flange, 3, wheel hub, 4, stiffening rib.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described.
Shown in Fig. 1-5, a kind of blade structure of wind-driven generator, comprise fan blade 1 with lift aerofoil and the flange 2 that is fixed in fan blade 1 one ends, described fan blade 1 with lift aerofoil is made up of first fan blade 1.1 and second fan blade 1.2, the inner side surface of described first fan blade 1.1 and second fan blade 1.2 be oppositely arranged and distance that 1.5m arranged (according to actual conditions, under the prerequisite that does not influence two fan blade proper functioning, this is apart from variable size), one end of described first fan blade 1.1 and second fan blade 1.2 is connected to one and fixedlys connected with flange 2, and the lift aerofoil 1.2.1 of the lift aerofoil 1.1.1 of described first fan blade 1.1 and second fan blade 1.2 is provided with in the same way, promptly as shown in Figure 5, the lift aerofoil 1.2.1 of the lift aerofoil 1.1.1 of first fan blade 1.1 and second fan blade 1.2 is towards identical.
Described first fan blade 1.1 and plane, second fan blade, 1.2 place are arranged in parallel, and an end of described first fan blade 1.1 and second fan blade 1.2 is connected to one by vertically disposed link and fixedlys connected with the wheel hub 3 of described wind-driven generator by flange 2, as shown in Figure 4, be evenly equipped with a plurality of tapped holes on the flange 2, flange 2 is fixedlyed connected with wheel hub 3 by bolt.
Between described first fan blade 1.1 and second fan blade 1.2 stiffening rib 4 is set.Described stiffening rib 4 is connected into by some grid structures to be formed.
Described first fan blade 1.1 is identical with the geometrical shape of the aerofoil profile of second fan blade 1.2.
Below only be described, but can not be interpreted as it is restriction claim with regard to most preferred embodiment of the present invention.The present invention not only is confined to above embodiment, and its concrete structure allows variation, as: also can there be certain included angle on first fan blade 1.1 and plane, second fan blade, 1.2 place; Different according to need of work and actual conditions, the geometrical shape of the aerofoil profile of described first fan blade 1.1 and second fan blade 1.2 also can be inequality; Deng.All various variations of being done in the protection domain of independent claims of the present invention are all in protection domain of the present invention.
Claims (5)
1. the blade structure of a wind-driven generator, comprise fan blade (1) with lift aerofoil and the flange (2) that is used for fixedlying connected with the wheel hub (3) of described wind-driven generator, it is characterized in that: described fan blade (1) with lift aerofoil is made up of first fan blade (1.1) and second fan blade (1.2), the inner side surface of the inner side surface of described first fan blade (1.1) and second fan blade (1.2) is oppositely arranged and distance is arranged, one end of described first fan blade (1.1) and second fan blade (1.2) is connected to one, and fixedly connected with flange (2), and the lift aerofoil (1.2.1) of the lift aerofoil (1.1.1) of described first fan blade (1.1) and second fan blade (1.2) is provided with in the same way.
2. the blade structure of wind-driven generator according to claim 1, it is characterized in that: described first fan blade (1.1) plane, place and second fan blade (1.2) plane, place are arranged in parallel, and an end of described first fan blade (1.1) and second fan blade (1.2) is connected to one by vertically disposed link and fixedlys connected with the wheel hub (3) of described wind-driven generator by flange (2).
3. the blade structure of wind-driven generator according to claim 1 is characterized in that: between described first fan blade (1.1) and second fan blade (1.2) stiffening rib (4) is set.
4. the blade structure of wind-driven generator according to claim 3, it is characterized in that: described stiffening rib (4) is connected into by some grid structures to be formed.
5. the blade structure of wind-driven generator according to claim 1, it is characterized in that: described first fan blade (1.1) is identical with the geometrical shape of the aerofoil profile of second fan blade (1.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010211238A CN101865077A (en) | 2010-06-23 | 2010-06-23 | Fan blade structure of a wind generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010211238A CN101865077A (en) | 2010-06-23 | 2010-06-23 | Fan blade structure of a wind generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101865077A true CN101865077A (en) | 2010-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010211238A Pending CN101865077A (en) | 2010-06-23 | 2010-06-23 | Fan blade structure of a wind generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN101865077A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807111A (en) * | 2014-01-26 | 2014-05-21 | 桐乡市石门永新玻璃钢制品有限公司 | Blade of 50KW wind generating set |
| CN108979952A (en) * | 2018-09-18 | 2018-12-11 | 国电联合动力技术有限公司 | A kind of pneumatic equipment bladess |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB274724A (en) * | 1927-01-07 | 1927-07-28 | August Bunkenburg | Improvements in and relating to blades or vanes applicable to wind-wheels, propellers and the like |
| WO1998031934A1 (en) * | 1997-01-20 | 1998-07-23 | Aerospatiale | Rotor with multiplane blades and wind power engine comprising such rotors |
| JP2006118363A (en) * | 2004-10-19 | 2006-05-11 | Mitsuo Shinozaki | High efficiency propeller |
| CN201705546U (en) * | 2010-06-23 | 2011-01-12 | 傅筱懿 | Fan blade structure of wind driven generator |
-
2010
- 2010-06-23 CN CN201010211238A patent/CN101865077A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB274724A (en) * | 1927-01-07 | 1927-07-28 | August Bunkenburg | Improvements in and relating to blades or vanes applicable to wind-wheels, propellers and the like |
| WO1998031934A1 (en) * | 1997-01-20 | 1998-07-23 | Aerospatiale | Rotor with multiplane blades and wind power engine comprising such rotors |
| JP2006118363A (en) * | 2004-10-19 | 2006-05-11 | Mitsuo Shinozaki | High efficiency propeller |
| CN201705546U (en) * | 2010-06-23 | 2011-01-12 | 傅筱懿 | Fan blade structure of wind driven generator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807111A (en) * | 2014-01-26 | 2014-05-21 | 桐乡市石门永新玻璃钢制品有限公司 | Blade of 50KW wind generating set |
| CN103807111B (en) * | 2014-01-26 | 2016-09-28 | 桐乡市石门永新玻璃钢制品有限公司 | The blade of 50KW wind power generating set |
| CN108979952A (en) * | 2018-09-18 | 2018-12-11 | 国电联合动力技术有限公司 | A kind of pneumatic equipment bladess |
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Application publication date: 20101020 |