CN101446270B - Wind generator system - Google Patents
Wind generator system Download PDFInfo
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- CN101446270B CN101446270B CN2008102200153A CN200810220015A CN101446270B CN 101446270 B CN101446270 B CN 101446270B CN 2008102200153 A CN2008102200153 A CN 2008102200153A CN 200810220015 A CN200810220015 A CN 200810220015A CN 101446270 B CN101446270 B CN 101446270B
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- wind
- transmission shaft
- wind wheel
- power generating
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention discloses a wind generator system which comprises a tower, a generator assembly which is arranged on the tower, a transmission shaft which is connected with the generator assembly, and multi-stage wind wheels which are movably arranged and spaced along the axial direction of the transmission shaft. The multi-stage wind wheels with small blades are arranged on the same shaft to replace a single wind wheel with huge blades, thus overcoming various disadvantages which are caused by huge blades of the existing huge wind generator, enhancing wind energy utilization efficiency, and universality and economical efficiency of the application of the wind electric power generation. In addition, for the generators with the same power, decrease of diameter of the wind wheels causes corresponding increase of rotation speed of the wind wheels so that transmission ratio of a gear box is reduced, manufacturing and installation cost of the gear box is reduced, which can further enhance economical efficiency of the generator system. The system has the advantages of low cost, high wind energy utilization ratio, convenient and easy manufacture, installation and maintenance, wide application field range, and can greatly reduce the diameter and whole size of the wind wheels of the existing big and small wind generators to facilitate transportation.
Description
Technical field
The present invention relates to technical field of wind power generation, especially a kind of wind-power generating system.
Background technique
Wind energy is a kind of non-pollution of renewable energy, and it is inexhaustible; Distribute extensively; Along with requirement on environmental protection with to the needs of clean energy resource, the development and use of wind energy receive people's attention day by day, and wind-power electricity generation is a main mode of utilizing wind energy on a large scale.
Horizontal shaft type wind-driven generator is a kind of wind-driven generator form of at present general and successful Application, its utilize wind energy critical piece be the blade (being installed on the wheel hub) of wind wheel.Along with development of technology, the output power of making wind-driven generator that designs also increases thereupon, thereby the rotor diameter of being installed is just increasing.The rotor diameter of the wind-driven generator of installing in the world now, is above hundred meters.The large scale wind wheel no doubt produces corresponding high-power wind turbine output; But the height of the erection tower that it is required, floor space etc. also increase thereupon, comprise the parts of blade, pylon etc.; Aspects such as its design, manufacturing, transportation and installation, maintenance are also more expensive and difficult; In fact, with regard to size, large-scale wind driven generator has reached the limit.
Summary of the invention
The objective of the invention is to overcome under the existing technology condition; The excessive drawback of blade diameter of large and medium-sized horizontal shaft type generator wind wheel; Make loaded down with trivial details and the difficult and cost problem of higher of the work of aspects such as design, manufacturing, transportation, installation, maintenance of parts such as blade, pylon be able to solve; A kind of be convenient to manufacturing, installation and maintenance are provided; Applied range, and can reduce the diameter and the overall dimensions of present large-scale wind driven generator wind wheel blade greatly, the horizontal shaft type wind-driven generator of the coaxial multistage wind wheel that cost is low, wind energy utilization is high.
For realizing above purpose; Technological scheme below the present invention has taked: a kind of wind-power generating system; Include pylon, be arranged on the generator assembly on the pylon, the transmission shaft that is connected with said generator assembly, along the axially movable multistage wind wheel that maintains spacing of installing on the said transmission shaft.
On same horizontal drive shaft, multistage (more than the two-stage) wind wheel is installed by certain spacing; All wind wheels rotate under wind; Drive same transmission shaft and rotate, the engine pack work of transmission shaft drive installation on pylon makes generator for electricity generation realize the conversion of wind energy-mechanical energy-electric energy; Wind, with regard to its essence, i.e. flow air; And air is full of the space, has improved the Wind Power Utilization efficient of wind wheel unit's blowing area through being provided with of said structure, can reduce rotor diameter greatly; Thereby can make the whole wind force generating system realize many-sided change,, reduce manufacturing complexity, technology difficulty and the manufacture cost of wind wheel blade significantly as reducing the pylon height; Installation, transportation and maintenance, maintenance become simple; Its unit cost of electricity-generating also can significantly reduce, simultaneously, owing to improved the wind energy utilization that unit receives area; Reduced driving wind-force (wind speed) and started wind speed and setting height(from bottom), middle-size and small-size wind-driven generator is widely used in city and the household wind power generation system; In theory; This wind wheel quantity of inventing that described generator system installs can be infinitely multistage, but in practical application, owing to limit by material, space, wind direction and service condition each side factor; Can design according to reality is required, confirm the concrete wind wheel progression of installing.Transmission shaft and wind wheel adopt the lightweight material manufacturing of not flexible high tenacity intensity.
Under the short situation of transmission shaft, available single integral shaft is as transmission shaft, at this moment; Wind wheels at different levels are installed on the single integral shaft by a determining deviation; But in practical application, single whole propeller shaft length is limited, and also is not easy to transportation when long, installs and maintenance.Therefore, along with the increase of wind wheel progression, the propeller shaft length that needs also certainly will will increase, and this moment, said transmission shaft was that the socket of more piece propeller section connects, and said wind wheel is installed on the propeller section.When every when need increasing the one-level wind wheel, only need to increase a joint propeller section and install a wind wheel then above that and get final product, the progression of wind wheel can be increased with the increase of generator power, overcome the length restriction of transmission shaft.
Be provided with the slide mechanism that wind wheel is slided along said propeller section front and back between the inwall of the wheel hub of said wind wheel and the said propeller section outer wall or between the inside and outside wall of two adjacent propeller section intersection.Wind wheel can slide with wind-force on transmission shaft vertically within the specific limits, realizes that the spacing of adjacent two-stage wind wheel can change with the size of wind-force.
On said propeller section, also be provided with the resilient connection mechanism that is used to retrain said wind wheel sliding stroke on propeller section.Resilient connection mechanism can make wind wheel vertically according to sliding before and after wind-force (wind speed) size, changes the axial spacing between the two-stage wind wheel according to wind speed automatically, realizes that the spacing between the adjacent two-stage wind wheel can be regulated with the wind-force size under the constraint of resilient connection mechanism automatically; Promptly after confirming initial installing space; When wind-force increases to a certain degree, will promote wind wheel and down the wind move vertically, wind-force is big more; The distance that moves is big more; The spacing of two-stage wind wheel is also just big more, and the influence of the prime wind wheel " wake flow " that back like this one-level wind wheel is suffered is also just more little, and wind energy utilization has also just raise.
Said resilient connection mechanism is arranged in the said propeller section, comprises fixed plate, is arranged on connecting plate, extension spring or pressure spring between the said wheel hub, and an end of this extension spring or pressure spring is connected with fixed plate, and the other end is connected with connecting plate.Resilient connection mechanism is arranged in the propeller section, has made full use of the space in the transmission shaft, simplified the structure of whole wind force generating system.
On the said propeller section, be arranged on the backstop that is provided with that wind wheel on this propeller section maintains spacing.When wind wheel with the wind slides on transmission shaft, can limit the stroke of wind wheel through the backstop that is provided with, prevent its with after wind wheel collide.
On the said transmission shaft between the said adjacent wind wheel, be arranged with the central siphon sheath.For the pollution that prevents transmission shaft (section) surface, reduce environmental attack, but assembly axis is managed and protected cover; The central siphon sheath is avoided the slip of wind wheel is produced obstruction with flexible, frivolous material, influences the variation of wind wheel spacing.
Said central siphon sheath is the bellows of tool telescopic resilience, and the two ends of this central siphon sheath are connected with the wheel hub of adjacent wind wheel respectively.The central siphon sheath is made into the flexible bellows of tool, and two ends are connected to the side of adjacent wind wheel wheel hub, at this moment; The central siphon sheath not only can be protected transmission shaft (section), plays the function of the adjacent wind wheel of elastic restraint simultaneously, makes adjacent wind wheel can not collide because of blowing of wind together; Can save resilient connection mechanism is installed, like this, further simplify design of the present invention, making; Improve Economy more fully, reduced user cost.
Also include balloon crane barge system or support bracket, said balloon crane barge system is arranged at the tail end of transmission shaft; Said support bracket one end is fixedly arranged on the said pylon, and the other end supports said transmission shaft.Balloon crane barge system is set on transmission shaft; Can carry most of weight of transmission shaft and wind wheel, reduce the bending of transmission shaft, alleviate the load of pylon simultaneously;, wind wheel progression long at transmission shaft more for a long time; Hanging contact and can influencing rotation with the bending deflection that prevents whole transmission shaft of balloon crane barge system and transmission shaft more than one, hang/physical length of the contact optical axis is required and decide; When transmission shaft shorter, wind wheel progression more after a little while, support bracket supporting shaft capable of using.
Along on the said transmission shaft wind gathering cover tube being installed.Because impeller diameter diminishes, and be installed on vertically on the same axle, therefore can further improve wind energy utilization through installing the wind gathering cover tube additional.
The present invention compared with prior art has following advantage: wind-power generating system according to the invention replaces single more large-scale blade wind wheel with the multistage wind wheel that is equipped with than small leaf that is installed on the same axle; Avoid all drawbacks of bringing because of blade is huge, improved popularity, the Economy of Wind Power Utilization efficient and application, in addition; For the generator of same power, owing to reducing of rotor diameter, the rotating speed of wind wheel and transmission shaft can correspondingly improve; Thereby can reduce the gear ratio of gearbox; The expenses such as manufacturing, installation of gearbox are reduced, and this can further improve the Economy of generator system, advantages such as having that cost is low, wind energy utilization is high, be convenient to manufacturing, installation and maintenance, application region scope are wide; Can reduce simultaneously the diameter and the overall dimensions of present large-scale wind driven generator wind wheel greatly, be convenient to transportation; Though the blowing area of wind wheel and whole system has reduced greatly, the quantity that increases wind wheel can be caught more wind energy; On the other hand; The wind wheel size is constant, can drive the wind-driven generator of different capacity through the progression that increases, checking is taken turns, within the specific limits; The wind-driven generator of different output power can use identical wind wheel; And only need change the progression of wind wheel, the existing big blade wind power generation machine of this advantage can't possess, so the present invention can realize that large and medium-sized wind-power generating system produces in batches, freely assembles; Make the present invention possess the remarkable economy advantage, with popularizing of widespread usage that promotes, promotes wind energy greatly and wind-power generating system.
Description of drawings
Fig. 1 is a wind-power generating system user mode schematic representation;
Fig. 2 is the wind-power generating system plan view;
Fig. 3 uses the schematic representation under the support bracket supporting shaft situation for wind-power generating system;
Fig. 4 is adjacent two propeller section and wind wheel structure generalized section;
Fig. 5 is the side view of Fig. 4;
When Fig. 6 uses extension spring for resilient connection mechanism, single-stage wind wheel and single-unit propeller section linkage structure schematic representation;
Fig. 7 is the B-B schematic cross-section of Fig. 6;
When Fig. 8 uses pressure spring for resilient connection mechanism, single-stage wind wheel and single-unit propeller section linkage structure schematic representation;
Schematic representation when Fig. 9 is installed in the transmission shaft tube outside for resilient connection mechanism;
The transmission shaft structure schematic representation of Figure 10 for sliding each other between the adapter of two-stage driving sleeve;
Figure 11 manages and protects the wind wheel and the transmission shaft schematic representation of cover for installation shaft outside transmission shaft;
Figure 12 is for using corrugated central siphon sheath not with the wind wheel and the transmission shaft schematic representation of resilient connection mechanism;
Figure 13 system schematic when installing the wind gathering cover tube additional.
Description of reference numerals: 1, generator assembly, 2, wind wheel, 3, transmission shaft, 4, pylon, 5, device for regulating direction, 6, balloon crane barge system; 7, wind gathering cover tube, 71, supporting frame, 21, blade, 22, wheel hub, 23, slide mechanism; 24, resilient connection mechanism, 241, extension spring or pressure spring, 31, pipe spreader, 32, stop, 33, rolling bearing; 34, central siphon sheath, 35, propeller section, 36, fixed plate, 37, connecting plate, 41, support bracket.
Embodiment
Below in conjunction with accompanying drawing and embodiment content of the present invention is explained further details.
Embodiment one:
See also Fig. 1, shown in Figure 2, a kind of wind-power generating system includes pylon 4, is arranged on the generator assembly 1 on the pylon 4, the transmission shaft 3 that is connected with generator assembly 1, is movably installed with multistage wind wheel 2 along what axially maintain spacing on the transmission shaft 3.Generator assembly 1 is installed on the pylon 4 through device for regulating direction 5, but makes the axial box haul of transmission shaft 3 regulate, and makes wind wheel 2 surface of revolution meet the flow direction aweather at any time.
When transmission shaft 3 is long, the progression of wind wheel 2 more for a long time, can be in the tail end installing balloon crane barge system 6 of transmission shaft 3.See also shown in Figure 3, when transmission shaft 3 is short, the progression of wind wheel 2 more after a little while, support bracket 41 can be set and without balloon crane barge system 6, an end of this support bracket 41 is fixedly arranged on the pylon 4, the other end supporting shaft 3.
See also Fig. 4 to shown in Figure 7; Transmission shaft 3 is to be connected by 35 sockets of more piece propeller section; Wind wheel 2 is installed on the propeller section 35, and some internal diameter of the end of the last nodal axisn pipe of its more piece propeller section 35 is big slightly, and one nodal axisn pipe front end some external diameter in back is slightly little; Make it to insert the end of last nodal axisn pipe, realize socket; Vice versa also can adopt other modes to realize the linking of two nodal axisn pipes.Be provided with the slide mechanism 23 that wind wheel 2 is slided along propeller section 35 front and back between the inwall of the wheel hub 22 of wind wheel 2 and said propeller section 35 outer walls; To guarantee that wind wheel can slide to regulate the spacing of 2 of adjacent wind wheels front and back on propeller section 35, this slide mechanism 23 can be ball or rolling bearing.
Also be provided with the resilient connection mechanism 24 that is used to retrain wind wheel 2 sliding stroke on propeller section 35 on the propeller section 35.Wind wheel 2 can slide with wind-force on transmission shaft 3 vertically within the specific limits; Realize that the spacing between the adjacent two-stage wind wheel 2 can regulate down in resilient connection mechanism 24 constraint automatically, promptly behind definite initial installing space, when wind-force increases to a certain degree; To promote wind wheel 2 down the wind moves vertically; Wind-force is big more, and the distance that moves is big more, and the spacing between the two-stage neighboring wind wheel 2 is also just big more.
Further,, can on transmission shaft 3, slide with the wind, collide for avoiding two adjacent wind wheels 2 because wind wheel 2 is under the rolling of ball, on propeller section 35 outer walls, be arranged on that wind wheel 2 on this propeller section 35 maintains spacing be provided with backstop 32.
See also resilient connection mechanism shown in Figure 8, shown in Figure 8 24 and adopt pressure spring 241, serve the same role with extension spring.
See also shown in Figure 11ly, on the transmission shaft 3 between the adjacent wind wheel 2, be arranged with central siphon sheath 34, effectively prevented the transmission shaft surface pollution, reduced the erosion of environment to transmission shaft.
See also shown in Figure 13ly,, therefore can further improve wind energy utilization along through supporting frame 71 wind gathering cover tube 7 being installed on the transmission shaft 3 because the wind wheel blade size of this kind power generation system is less.
See also shown in Figure 5; Between every two-stage wind wheel (being forward and backward level wind wheel) blade; On plane of rotation radially, form one deflection angle a be installed, can reduce of the influence of the wind tail of prime wind wheel blade back level wind wheel, and make the back level wind that wind wheel bore as much as possible for passing " new is original " wind of prime impeller; Catch natural wind to greatest extent, improve wind energy utilization to greatest extent.
The transmission shaft of present embodiment can use pipe, triangle tube or polygonal pipe to make.
Embodiment two:
See also shown in Figure 9; Different with embodiment one is; Present embodiment resilient connection mechanism 24 is arranged on the outside of propeller section 35; It comprises fixed plate 36, extension spring or the pressure spring 241 that is arranged on the corresponding propeller section 35, and an end of this extension spring or pressure spring 241 is connected with fixed plate 36, and the wheel hub 22 of the wind wheel 2 on the other end and this propeller section 35 is connected.
Embodiment three:
See also shown in Figure 12ly, different with the foregoing description is, present embodiment does not adopt resilient connection mechanism 24, but central siphon sheath 34 is set to the bellows of tool telescopic resilience, and the two ends of this central siphon sheath 34 are connected with the wheel hub 22 of adjacent wind wheel 2 respectively.At this moment, the central siphon sheath not only can be protected transmission shaft, plays the function of the adjacent wind wheel of elastic restraint simultaneously, makes adjacent wind wheel can not collide because of blowing of wind together, has further simplified structure of the present invention.
Embodiment four:
See also shown in Figure 10; Present embodiment and embodiment's one different being: 35 of the wheel hub 22 of wind wheel 2 and shaft parts are relatively-stationary; Wind wheel 2 no longer can slide along transmission shaft 3; But between the inside and outside wall of two adjacent propeller section 35 intersection, being provided with the slide mechanism 23 that can make two adjacent shaft parts 35 make the front and back slide relative, the slide mechanism 23 of present embodiment is a rolling bearing 33.Wind is on wind wheel, and under the situation of flexible coupling mechanism 24 constraints, slide relative before and after two adjacent shaft parts can have restrictedly vertically changes the spacing between the adjacent two-stage wind wheel, realizes and embodiment's one identical functions.
Above-listed detailed description is to the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (10)
1. wind-power generating system; Include pylon (4), be arranged on the generator assembly (1) on the pylon (4), the transmission shaft (3) that is connected with said generator assembly (1), it is characterized in that: go up the axially movable multistage wind wheel (2) that maintains spacing of installing along said transmission shaft (3).
2. wind-power generating system as claimed in claim 1 is characterized in that: said transmission shaft (3) is connected by more piece propeller section (35) socket, and said wind wheel (2) is installed on the propeller section (35).
3. wind-power generating system as claimed in claim 2 is characterized in that: be provided with the slide mechanism (23) that wind wheel (2) is slided along said propeller section (35) front and back between the inwall of the wheel hub (22) of said wind wheel (2) and said propeller section (35) outer wall.
4. wind-power generating system as claimed in claim 3 is characterized in that: on said propeller section (35), also be provided with the resilient connection mechanism (24) that is used to retrain said wind wheel (2) sliding stroke on propeller section (35).
5. wind-power generating system as claimed in claim 4; It is characterized in that: said resilient connection mechanism (24) is arranged in the said propeller section (35); Comprise fixed plate (36), be arranged on connecting plate (37), extension spring or pressure spring (241) between the said wheel hub (22); One end of this extension spring or pressure spring (241) is connected with fixed plate (36), and the other end is connected with connecting plate (37).
6. wind-power generating system as claimed in claim 5 is characterized in that: on said propeller section (35) outer wall, be arranged on that wind wheel (2) on this propeller section (35) maintains spacing be provided with backstop (32).
7. like claim 3 or 6 described wind-power generating systems, it is characterized in that: on the said transmission shaft (3) between the said adjacent wind wheel (2), be arranged with central siphon sheath (34).
8. wind-power generating system as claimed in claim 7 is characterized in that: said central siphon sheath (34) is the bellows of tool telescopic resilience, and the two ends of this central siphon sheath (34) are connected with the wheel hub (22) of adjacent wind wheel (2) respectively.
9. like arbitrary described wind-power generating system in the claim 1 to 5, it is characterized in that: also include balloon crane barge system (6) or support bracket (41), said balloon crane barge system (6) is arranged at the tail end of transmission shaft (3); Said support bracket (41) one ends are fixedly arranged on the said pylon (4), and the other end supports said transmission shaft (3).
10. wind-power generating system as claimed in claim 9 is characterized in that: along on the said transmission shaft (3) wind gathering cover tube (7) being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102200153A CN101446270B (en) | 2008-12-16 | 2008-12-16 | Wind generator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102200153A CN101446270B (en) | 2008-12-16 | 2008-12-16 | Wind generator system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101446270A CN101446270A (en) | 2009-06-03 |
| CN101446270B true CN101446270B (en) | 2012-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102200153A Expired - Fee Related CN101446270B (en) | 2008-12-16 | 2008-12-16 | Wind generator system |
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| CN (1) | CN101446270B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9599092B2 (en) * | 2013-06-19 | 2017-03-21 | Md Maruf Hossain | Wind generator system with multiple turbines |
| CN107076115B (en) | 2014-08-15 | 2020-06-05 | 维斯塔斯风力系统集团公司 | Control of a wind turbine under fault conditions |
| CN108700024B (en) * | 2015-12-22 | 2019-12-10 | 维斯塔斯风力系统有限公司 | Method for mounting or dismounting wind turbine components of a multi-rotor wind turbine |
| JP6833853B2 (en) | 2015-12-22 | 2021-02-24 | ヴェスタス ウィンド システムズ エー／エス | How to install or remove wind turbine components of a multi-rotor wind turbine |
| CN106593777B (en) * | 2017-01-20 | 2018-11-16 | 江苏德克玛电气有限公司 | A kind of wind power generation system |
| CN107642461A (en) * | 2017-10-26 | 2018-01-30 | 沈宏 | A kind of high-efficient wind generating equipment |
| CN108374755B (en) * | 2018-03-23 | 2024-05-10 | 国网山西省电力公司忻州供电公司 | Overload protection device for power transmission and transformation equipment of wind farm |
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| CN2682225Y (en) * | 2004-03-31 | 2005-03-02 | 张庆光 | Domestic wind power generator |
| CN1628215A (en) * | 2002-05-31 | 2005-06-15 | 朱张植 | Wind power generator with multiple rotary wings |
| CN2802116Y (en) * | 2005-07-03 | 2006-08-02 | 谢振才 | Frame-type multistage wind turbine |
| WO2007027765A2 (en) * | 2005-08-30 | 2007-03-08 | Douglas Spriggs Selsam | Multi-rotor wind turbine supported by continuous central driveshaft |
-
2008
- 2008-12-16 CN CN2008102200153A patent/CN101446270B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1628215A (en) * | 2002-05-31 | 2005-06-15 | 朱张植 | Wind power generator with multiple rotary wings |
| CN2682225Y (en) * | 2004-03-31 | 2005-03-02 | 张庆光 | Domestic wind power generator |
| CN2802116Y (en) * | 2005-07-03 | 2006-08-02 | 谢振才 | Frame-type multistage wind turbine |
| WO2007027765A2 (en) * | 2005-08-30 | 2007-03-08 | Douglas Spriggs Selsam | Multi-rotor wind turbine supported by continuous central driveshaft |
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| CN101446270A (en) | 2009-06-03 |
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