CN104018985A - Flexible and retractable auxiliary blade mechanism of vertical-axis wind turbine - Google Patents
Flexible and retractable auxiliary blade mechanism of vertical-axis wind turbine Download PDFInfo
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- CN104018985A CN104018985A CN201410259101.0A CN201410259101A CN104018985A CN 104018985 A CN104018985 A CN 104018985A CN 201410259101 A CN201410259101 A CN 201410259101A CN 104018985 A CN104018985 A CN 104018985A
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The invention discloses a flexible and retractable auxiliary blade mechanism of a vertical-axis wind turbine and belongs to wind turbines. According to the flexible and retractable auxiliary blade mechanism of the vertical-axis wind turbine, an auxiliary blade is assembled on an upper beam and a lower beam of the vertical-axis wind turbine and located between a main blade and a main shaft, a flexible auxiliary blade provided with a rigid balance weight bar is connected to the auxiliary blade through a coiling block, a dead bolt, a torsion spring, a bearing sleeve, a bearing and a fixed shaft are assembled in the coiling block, the fixed shaft is fixedly installed on the upper beam and the lower beam, a reel and a planar volute spiral spring are assembled on the upper beam and the lower beam, the two ends of a stay cord are connected to the rigid balance weight bar and the reel, and then the flexible and retractable auxiliary blade mechanism is formed. The flexible and retractable auxiliary blade mechanism is novel in structural design, scientific and reasonable in utilization of wind energy, high in adaptability, reliable in use and high in automation degree.
Description
Technical field
The invention belongs to wind energy conversion system, relate to a kind of flexible expandable auxiliary blade mechanism being assemblied on vertical axis windmill.
Background technique
Vertical axis windmill can be divided into two kinds of resistance type and lift-types with its working principle.Wherein, Savnious wind energy conversion system and Darrieus wind energy conversion system are respectively the Typical Representative of resistance type and lift-type wind energy conversion system.Shaft resistance type windmill startability is good, but under high tip-speed ratio, wind energy utilization efficiency is lower, and lift-type wind energy conversion system wind energy utilization efficiency under high tip-speed ratio is higher, but startability is poor, especially more difficultly under low wind friction velocity realizes self-starting.For solving the contradiction between vertical axis windmill startability and wind energy utilization efficiency, a large amount of researchers are studied it.
For improving the starting characteristic of lift-type wind energy conversion system, mainly contain two kinds of typical methods.The first is that lift-type and resistance type are directly combined, and utilizes resistance wind wheel can produce the feature compared with high pulling torque under low tip-speed ratio, realizes the startup of lift-type wind energy conversion system.As utility model patent 200920261028.5 " rises drag force hybrid vertical axis wind turbine "; The second is to change blade structure, adopts the solid blade of living to increase the startability of lift-type wind energy conversion system.As 200580010262.5 " vertical shaft windmill machine windmill blades ", 201210011801.9 " a kind of vertical axis windmill '.But all there are some problems in these two kinds of methods in actual applications.
Although first method has effectively been improved the self-starting characteristic of wind energy conversion system, along with the increase of tip-speed ratio, resistance wind wheel changes the load of wind energy conversion system gradually into, and then has reduced the wind energy utilization efficiency of complete machine under nominal operation state.Second method and first method comparison, way of realization is different, but principle is in collateral resistance acting with the wind, side lift acting against the wind.The method solid blade of need to living completes a folding in each period of rotation, this increases the vibrations of wind energy conversion system, and the aggravation of the turbulent flow phenomenon between stator blade and moving vane, has worsened the force environment of blade, improved the requirement to blade height and intensity, practicability is not strong.
Summary of the invention
The object of the invention is to improve under the high rotating speed of shaft resistance type windmill wind energy utilization efficiency low, the problem that lift-type wind energy conversion system startability is poor.A kind of liter is provided, hinders compound vertical axis windmill flexible expandable auxiliary blade mechanism.
The present invention is achieved by the following technical solutions:
Vertical axis windmill flexible expandable auxiliary blade mechanism, on main shaft, be fixedly mounted with successively from top to bottom upper flange and lower flange, on described upper flange and lower flange, be fixedly mounted with respectively upper beam and bottom end rail, upper, on the outer end of bottom end rail, be fixedly mounted with respectively primary blades, on described, on bottom end rail sidepiece, the fixing equipped back blades in position between primary blades and main shaft, at the maximum ga(u)ge position of back blades, stand to offering cylindrical hole, reel is inserted in the cylindrical hole of back blades rotationally, upper in reel barrel dliameter, on lower side, be fixedly mounted with successively respectively fixed bolt and bearing housing, the stationary axle that is fixedly mounted with bearing inserts respectively on the position, both sides that is packed in lower and upper cross-member, described stationary axle inserting is in bearing housing and reel chamber, described bearing is fixedly mounted with and coordinates with bearing housing, torque spring is sleeved on stationary axle, the two end part of described torque spring are affixed with fixed bolt and stationary axle respectively, on described back blades sidewall, stand to being provided with strip through-hole on edge, one end of flexible auxiliary blade is connected with reel by the strip through-hole on back blades, on the other end of described flexible auxiliary blade, be fixedly mounted with rigidity counter weight strip, described rigidity counter weight strip upper, underpart difference inserting is upper, in limit sliding chutes on bottom end rail, in upper beam part corresponding with bottom end rail, be rotatably mounted respectively reel, the two ends of plane scroll spring are connected on upper beam or bottom end rail and reel, bracing wire two ends are connected on rigidity counter weight strip and reel, described flexible auxiliary blade and back blades centreline space angle α are 45 °～75 °, the quantity of described flexible auxiliary blade is 2～6.
Advantage of the present invention is: the present invention is under the slow-speed of revolution, and flexible auxiliary blade stretches, and the resistance wind wheel forming with back blades, for wind energy conversion system provides larger driving moment, drives wind energy conversion system to accelerate; Under high rotating speed, flexible auxiliary blade is retracted, and back blades regains one's integrity, for wind energy conversion system provides certain driving moment.The present invention has reduced the startup wind speed of wind energy conversion system, increased wind energy conversion system toggle speed, improved the wind energy utilization efficiency under high tip-speed ratio simultaneously, have structural design novelty, Wind Power Utilization scientific and reasonable, adaptable, use the feature reliable, automaticity is high, have a extensive future.
Accompanying drawing explanation
Fig. 1 is vertical axis windmill flexible expandable auxiliary blade mechanism general structure schematic three dimensional views;
Fig. 2 is flexible auxiliary blade extending means schematic diagram;
Fig. 3 is bowing to view of Fig. 2.
Number in the figure explanation: 1, main shaft, 2, bottom end rail, 3, lower flange, 4, upper flange, 5, upper beam, 6, primary blades, 7, back blades, 8, flexible auxiliary blade, 9, rigidity counter weight strip, 10, limit sliding chutes, 11, bracing wire, 12, reel, 13, reel, 14, fixed bolt, 15, torque spring, 16, bearing housing, 17, bearing, 18, stationary axle, 19, plane scroll spring.
Embodiment
A kind of vertical axis windmill flexible expandable auxiliary blade mechanism, on main shaft 1, be fixedly mounted with successively from top to bottom upper flange 4 and lower flange 3, on described upper flange 4 and lower flange 3, be fixedly mounted with respectively upper beam 5 and bottom end rail 2, upper, bottom end rail 5, on 2 outer end, be fixedly mounted with respectively primary blades 6, on described, bottom end rail 5, on 2 sidepieces, the fixing equipped back blades 7 in position between primary blades 6 and main shaft 1, at the maximum ga(u)ge position of back blades 7, stand to offering cylindrical hole, reel 13 is inserted in the cylindrical hole of back blades 7 rotationally, upper in reel 13 barrel dliameters, on lower side, be fixedly mounted with successively respectively fixed bolt 14 and bearing housing 16, the stationary axle 18 that is fixedly mounted with bearing 17 inserts and is packed in lower and upper cross-member 5 respectively, on 2 position, both sides, described stationary axle 18 insertings are in bearing housing 16 and reel 13 chambeies, described bearing 17 is fixedly mounted with and coordinates with bearing housing 16, torque spring 15 is sleeved on stationary axle 18, the two end part of described torque spring 15 are affixed with fixed bolt 14 and stationary axle 18 respectively, on described back blades 7 sidewalls, stand to being provided with strip through-hole on edge, one end of flexible auxiliary blade 8 is connected with reel 13 by the strip through-hole on back blades 7, on the other end of described flexible auxiliary blade 8, be fixedly mounted with rigidity counter weight strip 9, described rigidity counter weight strip 9 upper, underpart difference inserting is upper, bottom end rail 5, in limit sliding chutes 10 on 2, in upper beam 5 and the corresponding part of bottom end rail 2, be rotatably mounted respectively reel 12, the two ends of plane scroll spring 19 are connected on upper beam 5 or bottom end rail 2 and reel 12, bracing wire 11 two ends are connected on rigidity counter weight strip 9 and reel 12, described flexible auxiliary blade 8 is 45 °～75 ° with back blades 7 centreline space angle α, the quantity of described flexible auxiliary blade 8 is 2～6.
Wind energy conversion system is under original state, plane scroll spring 19 applies certain pretightening force with torque spring 15, flexible auxiliary blade 8 is under the effect of two ends pretightening force, flexible auxiliary blade 8 is in initial rest position, under this state, in primary blades 6 inside, by back blades 7 and flexible auxiliary blade 8, form triangle resistance blade, can be equivalent to a resistance wind wheel.Wind energy conversion system is under rotation status, rigidity counter weight strip 9 produces certain centrifugal force, the active force that torque spring 15 produces and centrifugal force sum are greater than the active force that plane scroll spring 19 produces, and rigidity counter weight strip 9 moves along limit sliding chutes 10 together with flexible auxiliary blade 8, until reach new balance.
When rotating speed is lower, centrifugal force is less, and flexible auxiliary blade 8 is substantially in deployed condition, district's triangle resistance blade produces larger driving moment with the wind, meanwhile, district's triangle resistance blade produces less resistance torque against the wind, thereby makes wind energy conversion system realize self-starting under very low wind speed.Increase along with rotating speed, the centrifugal force that rigidity counter weight strip 9 produces also increases gradually, flexible auxiliary blade 8 shrinks gradually, when rotating speed is increased to certain numerical value, in the complete retraction back blades 7 of flexible auxiliary blade 8, be combined into a complete blade with back blades 7, now the driving moment of wind energy conversion system is mainly provided by the lift of outer field primary blades 6 generations, complete under the slow-speed of revolution and provide driving force by resistance, the conversion of driving force is provided by lift under high rotating speed.Under high rotating speed, internal layer back blades 7 also provides certain driving force, has improved the wind energy utilization efficiency under the high rotating speed of wind energy conversion system simultaneously.
Under original state, by torque spring 15 and plane scroll spring 19 are applied to different pretightening forces, and the rigidity counter weight strip 9 of selecting different quality, can control the wind energy conversion system rotating speed of rigidity counter weight strip 9 complete retraction back blades 7, and extending means is to interval from starting to be retracted to the rotating speed of complete retraction, with performance blade optimum pneumatic performance, obtain higher wind energy utilization efficiency.
Usability of the present invention is:
1, vertical axis windmill internal layer back blades 7 of the present invention and flexible auxiliary blade 8 are arranged between upper and lower crossbeam 5,2, there is no additionally to increase the volume of wind energy conversion system.
2, in the present invention, rigidity counter weight strip 9 moves in limit sliding chutes 10, define the position of rigidity counter weight strip 9 under the angle of flexible auxiliary blade 8 and each rotating speed, reduced flexible auxiliary blade 8 in wind energy conversion system rotation because of stressed trembling of producing, guaranteed the conversion of wind-force to driving moment.
3, reel 13 is arranged on the maximum ga(u)ge place of back blades 7, does not destroy the integrity of back blades 7 aerofoil profiles, simultaneously also for telescopic mounting provides enough working spaces.
4, after rigidity counter weight strip 9 shrinks completely, be combined into an intact leaf with back blades 7, thereby guaranteed under high rotating speed, the normal aeroperformance of back blades 7, rigidity counter weight strip 9 embeds in back blades 7, has guaranteed the Security of nominal operation state apparatus for lower wind machine operation.
5, in the present invention, by the configuration to the adjusting of torque spring 15, plane scroll spring 19 pretightening force sizes and different quality rigidity counter weight strip 9, can realize the stable transition of wind energy conversion system from low tip-speed ratio to high tip-speed ratio running, realize the self-starting of vertical suction draught machine, improved the wind energy utilization efficiency under high tip-speed ratio simultaneously.
Claims (3)
1. a vertical axis windmill flexible expandable auxiliary blade mechanism, on main shaft (1), be fixedly mounted with successively from top to bottom upper flange (4) and lower flange (3), on described upper flange (4) and lower flange (3), be fixedly mounted with respectively upper beam (5) and bottom end rail (2), upper, bottom end rail (5, 2) on outer end, be fixedly mounted with respectively primary blades (6), it is characterized in that: on described, bottom end rail (5, 2) on sidepiece, be positioned at the fixing equipped back blades (7) in position between primary blades (6) and main shaft (1), at the maximum ga(u)ge position of back blades (7), stand to offering cylindrical hole, reel (13) is inserted in the cylindrical hole of back blades (7) rotationally, upper in reel (13) barrel dliameter, on lower side, be fixedly mounted with successively respectively fixed bolt (14) and bearing housing (16), the stationary axle (18) that is fixedly mounted with bearing (17) inserts and is packed in respectively, bottom end rail (5, 2) on position, both sides, described stationary axle (18) inserting is in bearing housing (16) and reel (13) chamber, described bearing (17) is fixedly mounted with and coordinates with bearing housing (16), torque spring (15) is sleeved on stationary axle (18), the two end part of described torque spring (15) are affixed with fixed bolt (14) and stationary axle (18) respectively, on described back blades (7) sidewall, stand to being provided with strip through-hole on edge, one end of flexible auxiliary blade (8) is connected with reel (13) by the strip through-hole on back blades (7), on the other end of described flexible auxiliary blade (8), be fixedly mounted with rigidity counter weight strip (9), described rigidity counter weight strip (9) upper, underpart difference inserting is upper, bottom end rail (5, 2) in the limit sliding chutes on (10), in upper beam (5) and the corresponding part of bottom end rail (2), be rotatably mounted respectively reel (12), the two ends of plane scroll spring (19) are connected on upper beam (6) or bottom end rail (2) and reel (12), bracing wire (11) two ends are connected on rigidity counter weight strip (9) and reel (12).
2. vertical axis windmill flexible expandable auxiliary blade according to claim 1 mechanism, is characterized in that: described flexible auxiliary blade (8) is 45 °～75 ° with back blades (7) centreline space angle α.
3. vertical axis windmill flexible expandable auxiliary blade according to claim 1 mechanism, is characterized in that: the quantity of described flexible auxiliary blade (8) is 2～6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410259101.0A CN104018985B (en) | 2014-06-06 | 2014-06-06 | Flexible and retractable auxiliary blade mechanism of vertical-axis wind turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410259101.0A CN104018985B (en) | 2014-06-06 | 2014-06-06 | Flexible and retractable auxiliary blade mechanism of vertical-axis wind turbine |
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| CN104018985A true CN104018985A (en) | 2014-09-03 |
| CN104018985B CN104018985B (en) | 2017-01-11 |
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| CN201410259101.0A Expired - Fee Related CN104018985B (en) | 2014-06-06 | 2014-06-06 | Flexible and retractable auxiliary blade mechanism of vertical-axis wind turbine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201743A (en) * | 2015-11-03 | 2015-12-30 | 杭州恒龙新能源科技有限公司 | Speed limit mechanism |
| CN110094302A (en) * | 2019-01-11 | 2019-08-06 | 湘潭大学 | A kind of variable oar apical margin rotation type vertical axis aerogenerator |
| CN110360052A (en) * | 2019-08-28 | 2019-10-22 | 上海海事大学 | A kind of vertical axis windmill of angle of attack adjust automatically |
| CN110374797A (en) * | 2019-08-13 | 2019-10-25 | 杭州德飙新能源科技有限公司 | A kind of self-interacting type blade of wind-driven generator |
| CN111075642A (en) * | 2019-12-31 | 2020-04-28 | 陆林娣 | Stable-balance vertical wind power generation device and method thereof |
| CN113898527A (en) * | 2021-10-13 | 2022-01-07 | 南京师范大学中北学院 | Wing arm telescopic vertical axis wind turbine capable of automatically adjusting mass center |
| CN113958451A (en) * | 2021-10-29 | 2022-01-21 | 陈曦 | Variable-pitch adjustment type vertical axis wind generating set |
| CN114320757A (en) * | 2022-02-16 | 2022-04-12 | 天津市特兰奇新能源有限公司 | Vertical wind generating set combining lift resistance with full wind speed power generation |
| CN115342023A (en) * | 2022-09-13 | 2022-11-15 | 中国长江三峡集团有限公司 | Impeller structure and wind power generation device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005248935A (en) * | 2004-03-03 | 2005-09-15 | Haruo Fujiwara | Windmill for wind power generation |
| CN101915218A (en) * | 2010-08-20 | 2010-12-15 | 张�杰 | Wind power generating set with vertical shaft |
| CN201757026U (en) * | 2010-03-08 | 2011-03-09 | 王德恒 | Split type vertical shaft wind generator system |
| WO2013027017A1 (en) * | 2011-08-25 | 2013-02-28 | Donald E Brown | Fluid machine for power generation |
-
2014
- 2014-06-06 CN CN201410259101.0A patent/CN104018985B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005248935A (en) * | 2004-03-03 | 2005-09-15 | Haruo Fujiwara | Windmill for wind power generation |
| CN201757026U (en) * | 2010-03-08 | 2011-03-09 | 王德恒 | Split type vertical shaft wind generator system |
| CN101915218A (en) * | 2010-08-20 | 2010-12-15 | 张�杰 | Wind power generating set with vertical shaft |
| WO2013027017A1 (en) * | 2011-08-25 | 2013-02-28 | Donald E Brown | Fluid machine for power generation |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201743B (en) * | 2015-11-03 | 2017-11-07 | 杭州恒龙新能源科技有限公司 | Speed limiting mechanism |
| CN105201743A (en) * | 2015-11-03 | 2015-12-30 | 杭州恒龙新能源科技有限公司 | Speed limit mechanism |
| CN110094302B (en) * | 2019-01-11 | 2020-10-16 | 湘潭大学 | Variable-propeller top edge self-rotating vertical axis wind turbine |
| CN110094302A (en) * | 2019-01-11 | 2019-08-06 | 湘潭大学 | A kind of variable oar apical margin rotation type vertical axis aerogenerator |
| CN110374797A (en) * | 2019-08-13 | 2019-10-25 | 杭州德飙新能源科技有限公司 | A kind of self-interacting type blade of wind-driven generator |
| CN110360052A (en) * | 2019-08-28 | 2019-10-22 | 上海海事大学 | A kind of vertical axis windmill of angle of attack adjust automatically |
| CN111075642A (en) * | 2019-12-31 | 2020-04-28 | 陆林娣 | Stable-balance vertical wind power generation device and method thereof |
| CN113898527A (en) * | 2021-10-13 | 2022-01-07 | 南京师范大学中北学院 | Wing arm telescopic vertical axis wind turbine capable of automatically adjusting mass center |
| CN113898527B (en) * | 2021-10-13 | 2023-12-01 | 南京师范大学中北学院 | Wing arm telescopic vertical axis wind turbine capable of automatically adjusting mass center |
| CN113958451A (en) * | 2021-10-29 | 2022-01-21 | 陈曦 | Variable-pitch adjustment type vertical axis wind generating set |
| CN114320757A (en) * | 2022-02-16 | 2022-04-12 | 天津市特兰奇新能源有限公司 | Vertical wind generating set combining lift resistance with full wind speed power generation |
| CN115342023A (en) * | 2022-09-13 | 2022-11-15 | 中国长江三峡集团有限公司 | Impeller structure and wind power generation device |
| CN115342023B (en) * | 2022-09-13 | 2023-06-23 | 中国长江三峡集团有限公司 | Impeller structure and wind power generation device |
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