CN102650262B - Blade underspeed-controllable vertical axis wind turbine - Google Patents
Blade underspeed-controllable vertical axis wind turbine Download PDFInfo
- Publication number
- CN102650262B CN102650262B CN201210133269.8A CN201210133269A CN102650262B CN 102650262 B CN102650262 B CN 102650262B CN 201210133269 A CN201210133269 A CN 201210133269A CN 102650262 B CN102650262 B CN 102650262B
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- China
- Prior art keywords
- fan blade
- panel
- blade
- lift
- angle
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- 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
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Classifications
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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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- Wind Motors (AREA)
Abstract
The invention relates to a vertical axis wind turbine. At present, no method for well controlling the blade underspeed of the vertical axis wind turbine is provided, the blade underspeed can only be controlled by an electromagnetic brake and a manual brake of the turbine, so the volume and cost of the turbine are greatly increased, and great power output loss is caused under the underspeed state. The vertical axis wind turbine utilizes simple control plates to eliminate the blade underspeed. The automatic control plates are connected with blades through rotary mechanisms, and can be automatically opened and closed according to the incidence variation. The vertical axis wind turbine does not need additional controller any more, has a simple structure and is low in cost.
Description
Technical field
The present invention relates to wind-driven generator, specially one kind are applied to off-network type vertical axis aerogenerator.
Background technology
Wind motor is divided into rectilinear and horizontal electromotor at present；With respect to horizontal axis wind-driven generator, due to hanging down
Straight wind power generating motor small volume, easy for installation, threshold wind velocity is little, change of the wind when adaptive faculty strong, it has efficiency high, wind
Energy utilization rate is high, quiet, the low advantage of maintenance cost, has obtained extensive development and utilization at present.Either resistance-type is still
Lifting-force type vertical-axis wind power generator group after exceeding rated wind speed, due to mechanical strength and electromotor, power electronics capacity
Etc. limiting it is necessary to reduce the energy capture of wind wheel of physical property, power output is made to remain near rated value.So also same
When limit the load that blade bears and the impact that whole wind energy conversion system receives, thus ensureing that wind energy conversion system is without prejudice safely.Otherwise,
Stall will cause blade vibration, and blade power stall is Nonlinear Flutter, it will causes very big dynamic stress, causes blade fatigue
Destroy, affect wind energy conversion system safety in operation and reliability.But the vertical axis aerogenerator of currently available technology is in fan blade stall
On also there is no good control method, the stall of fan blade can only be controlled by the electromagnetic brake of electromotor and hand-operated brake, this
While volume with regard to increasing electromotor and cost, also create the loss of power output under stall conditions.
Content of the invention
For drawbacks described above, the present invention provides a kind of improved vertical axis wind power generator, solves current vertical shaft wind
The problem of power generator blade stall.Wind-driven generator is made still to keep the steady output of power in high wind speed section.
For achieving the above object, the technical scheme is that：
The controllable vertical axis aerogenerator of fan blade stall, including main shaft perpendicular to the ground, TRT, lift leaf
Piece, described lift force blade is machine wings, and is connected with main shaft by connecting rod, wheel hub and equidistantly distributes around main shaft, rises
Panel is provided with power blade, panel be one piece with cambered plate, be fixed on the upper and lower ends of lift fan blade with bearing,
Centre has an axle to be through the foremost of panel, and the rear portion of panel rides over lift fan blade leading edge, and rear portion is lifted up slightly,
In rotary course, when the angle of attack of lift fan blade is less than the critical angle of attack, panel is pressed on fan blade air force wind wheel,
Panel be in close state, with the increasing of wind speed, the angle of attack also with increase, when the angle of attack increases to the critical angle of attack,
The air force of fan blade leading edge is turned into suction, the panel of fan blade leading edge is inhaled automatically and opens, panel is formed with fan blade surface
One gap, now panel open with lift fan blade angulation α it is characterised in that：The control installed on described lift force blade
Making sheet is the panel slowing down stall, and when fan blade will occur stall conditions, described panel and lift fan blade form maximum
Angle [alpha], described α angle is 0 ~ 50 degree, and described every piece of lift fan blade is 1 piece equipped with panel quantity.
Brief description
Fig. 1 is the assembling assumption diagram of the present invention；Fig. 2 is the top view of the present invention；Fig. 3 is the knot of lift force blade in the present invention
Composition；Fig. 4 is panel structure chart of the present invention：1 is main shaft；2 is lift force blade；3 is connecting rod；4 is wheel hub；5 is panel；6
For TRT；7 connecting shafts；8 is bearing.
Specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with drawings and Examples, the present invention is described further, should
Embodiment is only used for explaining the present invention, and the restriction of the not paired scope of the present invention.
With reference to shown in Fig. 1, Fig. 2：The present invention relates to a kind of vertical axis aerogenerator, including main shaft 1 perpendicular to the ground,
It is arranged on the TRT 6 below main shaft 1, be connected to the upper and lower wheel hub 4 on main shaft 1, the lift force blade of three pieces of machine wings
2, described three pieces of lift force blades 2 are equally spaced around main shaft 1 by connecting rod 3；Every piece of lift force blade 2 correspond to upper and lower two groups of connecting rods
3, every group of connecting rod 3 is two, and it connects lift force blade 2 and wheel hub 4 respectively, and described every group of two connections 3 strut angulation
β, and angle beta selects, between 30 degree of -60 degree, to improve the overall holding capacity of connecting rod with this；Described lower hub passes through even disk
It is connected with TRT 6, when lift force blade 2 rotarily drives wheel hub rotation, thus TRT startup optimization is made by even disk.Wind
In rotary course, when the angle of attack of fan blade 2 is less than the critical angle of attack, panel 5 is in the state closing to wheel.With reference to Fig. 3
Shown：This figure is the structure chart of lift force blade 2, the top end face of lift force blade 2 is provided with one piece of movable panel 5, is used for
Slow down the stall of fan blade in high wind fan blade stall.The rear portion of panel rides over fan blade 2 leading edge, and rear portion is lifted up slightly, lift
The limited angle system rising.In rotary course, when the angle of attack of fan blade 2 is less than the critical angle of attack, panel 5 is closure to wind wheel
, with the increasing of wind speed, the angle of attack also with increase, when the angle of attack increases to the critical angle of attack, fan blade will stall when panel 5
Open；Panel opens and lift force blade angulation α, and described α maximum angle is 0 ~ 50 degree, and this example is 30 degree；Described every piece
One piece of panel is provided with lift force blade.With reference to shown in Fig. 4：This case is panel mechanism map.Panel 5 is one piece and carries arc
The plate of degree, bearing 8 is fixed on the upper and lower ends of fan blade 2, and there is an axle 7 centre, is through the foremost of panel 5.Wind wheel is in rotation
During turning, when the angle of attack of fan blade 2 is less than the critical angle of attack, panel 5 is in the state closing.
The operation principle of the present invention is：Panel 5 be one piece with cambered plate, bearing 8 is fixed on up and down the two of fan blade 2
End, there is an axle 7 centre, is through the foremost of panel 5.The rear portion of panel rides over fan blade 2 leading edge, and rear portion is lifted slightly upwards
Rise, the limited angle system lifted.In rotary course, when the angle of attack of fan blade 2 is less than the critical angle of attack, panel 5 is wind wheel
Closure, with the increasing of wind speed, also with increase, when the angle of attack increases to the critical angle of attack, fan blade will stall time control for the angle of attack
Making sheet 5 is opened, its gap together with the formation of fan blade 2 surface, and the higher air-flow of fan blade 2 medial surface pressure is obtained by this road gap
Accelerate and flow to fan blade 2 lateral surface, increase the speed of air-flow in lateral surface boundary-layer, reduce pressure, eliminate here
Separation vortex, thus delayed air-flow to separate, it is to avoid the stall of fan blade under High Angle of Attack.
It is computed, because this structure eliminates electromagnetic brake device in electromotor, can be by the cost of vertical-axis generators
Reduce 15%, due to avoiding the stall of fan blade, generating capacity can be made integrally to improve 40% about.
Claims (3)
1. the controllable vertical axis aerogenerator of fan blade stall, including main shaft perpendicular to the ground, TRT, lift leaf
Piece, described lift force blade is machine wings, and is connected with main shaft by connecting rod, wheel hub and equidistantly distributes around main shaft, rises
Panel is provided with power blade, panel be one piece with cambered plate, be fixed on the upper and lower ends of lift fan blade with bearing,
Centre has an axle to be through the foremost of panel, and the rear portion of panel rides over lift fan blade leading edge, and rear portion is lifted up slightly,
In rotary course, when the angle of attack of lift fan blade is less than the critical angle of attack, panel is pressed on fan blade air force wind wheel,
Panel be in close state, with the increasing of wind speed, the angle of attack also with increase, when the angle of attack increases to the critical angle of attack,
The air force of fan blade leading edge is turned into suction, the panel of fan blade leading edge is inhaled automatically and opens, panel is formed with fan blade surface
One gap, now panel open with lift fan blade angulation α it is characterised in that：The control installed on described lift force blade
Making sheet is the panel slowing down stall.
2. the controllable vertical axis aerogenerator of fan blade stall according to claim 1 it is characterised in that：Will in fan blade
When there are stall conditions, described panel forms maximum angle α with lift fan blade, and described α angle is 0 ~ 50 degree.
3. the controllable vertical axis aerogenerator of fan blade stall according to claim 1 and 2 it is characterised in that：Described
It is 1 piece equipped with panel quantity on every piece of lift fan blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210133269.8A CN102650262B (en) | 2012-04-24 | 2012-04-24 | Blade underspeed-controllable vertical axis wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210133269.8A CN102650262B (en) | 2012-04-24 | 2012-04-24 | Blade underspeed-controllable vertical axis wind turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102650262A CN102650262A (en) | 2012-08-29 |
| CN102650262B true CN102650262B (en) | 2017-02-08 |
Family
ID=46692361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210133269.8A Expired - Fee Related CN102650262B (en) | 2012-04-24 | 2012-04-24 | Blade underspeed-controllable vertical axis wind turbine |
Country Status (1)
| Country | Link |
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| CN (1) | CN102650262B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745797B (en) * | 2017-09-12 | 2019-06-04 | 廖超辉 | A kind of slit wing, a kind of compound wing and its a kind of slit machine leaf |
| CN112061884B (en) * | 2020-09-14 | 2022-04-29 | 国网河南省电力公司温县供电公司 | Pulley mechanism for paying off power cable for power construction |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040168U (en) * | 1988-06-27 | 1989-06-28 | 王涧峰 | Wind adjustable vertical shaft wind-driven engine |
| EP2153058A2 (en) * | 2006-11-02 | 2010-02-17 | Lignum Vitae Limited | Wind rotor blade and wind turbine comprising such blade |
| JP3996945B1 (en) * | 2007-02-20 | 2007-10-24 | 常夫 野口 | Vertical axis windmill |
| US20110110777A1 (en) * | 2007-12-21 | 2011-05-12 | Vestas Wind Systems A/S | Active flow control device and method for affecting a fluid boundary layer of a wind turbine blade |
| CN101598105B (en) * | 2008-06-06 | 2011-09-07 | 中国科学院工程热物理研究所 | Device for controlling streaming flow separation on surface of blade |
| US8011886B2 (en) * | 2009-06-30 | 2011-09-06 | General Electric Company | Method and apparatus for increasing lift on wind turbine blade |
| GB2477509A (en) * | 2010-02-04 | 2011-08-10 | Rolls Royce Plc | A vertical axis turbine foil structure with surface fluid transfer openings |
| DE102010027003B4 (en) * | 2010-07-13 | 2018-03-22 | Carl Von Ossietzky Universität Oldenburg | Rotor for a wind turbine and method for controlling the rotor |
| CN102094769B (en) * | 2011-02-24 | 2012-09-26 | 西北工业大学 | Wind machine blade airfoil profile capable of controlling flow stalling through standing vortex |
| CN102135068B (en) * | 2011-04-01 | 2012-02-08 | 马嗣锋 | Wing span type self-adapting blade structure |
| EP2549097A1 (en) * | 2011-07-20 | 2013-01-23 | LM Wind Power A/S | Wind turbine blade with lift-regulating means |
| CN202579029U (en) * | 2012-04-24 | 2012-12-05 | 李�杰 | Vertical axis wind driven generator with controllable stalling of fan blade |
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2012
- 2012-04-24 CN CN201210133269.8A patent/CN102650262B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102650262A (en) | 2012-08-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 212345 Danyang Hi-tech Zone, Sanhuan, Danyang, Yunyang, Jiangsu Patentee after: Li Jie Address before: Room 1507, room D, Hutang school, Wujin District, Changzhou, Jiangsu Patentee before: Li Jie |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No.33, Yongfu Road, Yongning District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Li Jie Address before: 212345 Danyang high tech Zone, South Third Ring Road, Yunyang town, Danyang City, Jiangsu Province Patentee before: Li Jie |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 |