CN201705546U - Fan blade structure of wind driven generator - Google Patents
Fan blade structure of wind driven generator Download PDFInfo
- Publication number
- CN201705546U CN201705546U CN2010202398947U CN201020239894U CN201705546U CN 201705546 U CN201705546 U CN 201705546U CN 2010202398947 U CN2010202398947 U CN 2010202398947U CN 201020239894 U CN201020239894 U CN 201020239894U CN 201705546 U CN201705546 U CN 201705546U
- Authority
- CN
- China
- Prior art keywords
- fan blade
- driven generator
- wind
- blade
- flange
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Landscapes
- Wind Motors (AREA)
Abstract
The utility model discloses a fan blade structure of a wind driven generator, which comprises a fan blade (1) with lifting wing surfaces and a flange (2) for being fixedly connected with a hub (3) of the wind driven generator. The fan blade (1) with the lifting wing surfaces consists of a first fan blade (1.1) and a second fan blade (1.2). The inside surface of the first fan blade (1.1) and the inside surface of the second fan blade (1.2) are arranged oppositely and a distance is reserved between the inside surfaces of the first fan blade (1.1) and the second fan blade (1.2). One ends of the first fan blade (1.1) and the second fan blade (1.2) are fixedly connected into one whole body and are fixedly connected with the flange (2). A lifting wing surface (1.1.1) of the first fan blade (1.1) and a lifting wing surface (1.2.1) of the second fan blade (1.2) are arranged in the same direction. The wind driven generator using the fan blade structure has good power performance, can effectively improve utilization rate of wind energy and can greatly shorten the length of blades.
Description
Technical field
The utility model 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 in the utility model 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 technical scheme in the invention for solving the above technical problem is: 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, advantage of the present utility model is: 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 the utility model wind-driven generator.
The attached TV structure schematic representation of the blade structure of Fig. 3 the utility model wind-driven generator.
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 embodiment of the present utility model is 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 utility model.The utility model 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 the utility model independent claims are all in the utility model protection domain.
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 |
|---|---|---|---|
| CN2010202398947U CN201705546U (en) | 2010-06-23 | 2010-06-23 | Fan blade structure of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202398947U CN201705546U (en) | 2010-06-23 | 2010-06-23 | Fan blade structure of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705546U true CN201705546U (en) | 2011-01-12 |
Family
ID=43442701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202398947U Expired - Fee Related CN201705546U (en) | 2010-06-23 | 2010-06-23 | Fan blade structure of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865077A (en) * | 2010-06-23 | 2010-10-20 | 傅筱懿 | Fan blade structure of a wind generator |
-
2010
- 2010-06-23 CN CN2010202398947U patent/CN201705546U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865077A (en) * | 2010-06-23 | 2010-10-20 | 傅筱懿 | Fan blade structure of a wind generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8915714B2 (en) | Wind turbine and wind turbine blade | |
| CN201381942Y (en) | Loose blade speed regulation type wind generating set | |
| CN113847207A (en) | Double-wind-wheel wind turbine generator set | |
| CN201865838U (en) | Wind turbine combining lift force and resistance force | |
| CN104847579A (en) | Adjustable-blade-attack-angle vertical-axis wind turbine with double-layer wind wheels | |
| CN104500334B (en) | Flapping wing wind turbine with flexible empennage | |
| CN201705546U (en) | Fan blade structure of wind driven generator | |
| CN101865077A (en) | Fan blade structure of a wind generator | |
| CN106894948A (en) | Based on bionic vertical axis windmill | |
| CN201358887Y (en) | Lift force and drag force mixed type vertical axis wind wheel | |
| CN205714573U (en) | Double plunder face multiple-blade drag-line wind turbine | |
| CN105545583B (en) | Wind power generation blade and lee face go out to flow the determination method at tangent line inclination angle | |
| CN104343626A (en) | Self-protection wind-driven water lifting system with accelerating vanes | |
| CN104295442A (en) | Dual-wind-wheel horizontal-axis wind turbine | |
| CN209621520U (en) | A kind of lift vertical shaft wind energy conversion system using local backward-swept blade | |
| CN209621519U (en) | A kind of lift vertical shaft wind energy conversion system using full backward-swept blade | |
| CN106704092A (en) | Synergistic spoiler blade | |
| CN108167124B (en) | Single-shaft double-type wind power generation equipment | |
| CN202065122U (en) | Wind power generation device | |
| CN201407128Y (en) | Large-scale wind energy collection device | |
| CN206522215U (en) | Synergy spoiler blade | |
| CN201865837U (en) | Wind-congregating type vertical axis wind turbine | |
| CN202900530U (en) | Vertical shaft wind turbine | |
| CN204402770U (en) | The airfoil fan of wind-driven generator | |
| CN102562441A (en) | Vertical-axis wind turbine with counterweights |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20130623 |