CN102650262A - Blade underspeed-controllable vertical axis wind turbine - Google Patents
Blade underspeed-controllable vertical axis wind turbine Download PDFInfo
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- CN102650262A CN102650262A CN2012101332698A CN201210133269A CN102650262A CN 102650262 A CN102650262 A CN 102650262A CN 2012101332698 A CN2012101332698 A CN 2012101332698A CN 201210133269 A CN201210133269 A CN 201210133269A CN 102650262 A CN102650262 A CN 102650262A
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- blade
- vertical axis
- underspeed
- control panel
- wind turbine
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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
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, be specially a kind of being applied to from net type vertical axis aerogenerator.
Background technique
Wind motor is divided into rectilinear and the horizontal motor at present; With respect to horizontal axis wind-driven generator; Because rectilinear wind power generating motor volume is little, easy for installation, start that wind speed is little, adaptive faculty is strong during change of the wind; It has advantages such as efficient height, wind energy utilization is high, quiet, maintenance cost is low, has obtained development and utilization widely at present.No matter be that resistance type or lift vertical shaft wind power generating set are after surpassing rated wind speed; Because the restriction of mechanical strength and physical properties such as generator, power electronics capacity; Must reduce the energy capture of wind wheel, power output is still remained near the rating value.So also limited the impact that load that blade bears and whole wind machine are received simultaneously, thereby guaranteed that wind energy conversion system safety is without prejudice.Otherwise stall will cause blade vibration, and the stall of blade power is non-linear flutter, will cause very big dynamic stress, causes the blade fatigue ruption, influences wind energy conversion system safety in operation and reliability.But the vertical axis aerogenerator of existing technology does not also have the better controlled method in fan blade stall at present; The stall that can only control fan blade through the electromagnetic brake and the manual brake of generator; When this just strengthens volume and the cost of generator, also caused the loss of power output under the stall conditions.
Summary of the invention
To above-mentioned defective, the present invention provides a kind of modified model vertical axis aerogenerator, has solved the problem of present vane of vertical shaft wind-driven generator stall.Make wind-driven generator still keep the steady output of power in the high wind speed section.
For realizing above-mentioned purpose, technological scheme of the present invention is:
A kind of vertical axis aerogenerator; Comprise main shaft perpendicular to the ground, electricity generating device, lift force blade, said lift force blade are wing shape structure; And link to each other with main shaft and be equally spaced around main shaft through connecting rod, wheel hub, the control panel of control fan blade stall also is installed on the said lift force blade.
Of the present inventionly further be improved to: a control panel is installed on the said every lift force blade.
Lift fan blade of the present invention has adopted wing shape structure, its objective is in order to make full use of the starting characteristic of wing, utilizes the lifting force of wings characteristic to promote the rotation of wind wheel.The present invention is provided with control panel on wing, said control panel volt rotates in company with fan blade on fan blade together.Under the low incidence situation, aerodynamic force is pressed in it on the fan blade, is in closed state; When the angle of attack increases to a certain degree; The aerodynamic force of fan blade leading edge becomes suction, the control panel of fan blade leading edge is inhaled automatically opened, and this has increased the speed of air-flow in the outer side surface boundary layer; Reduced pressure; Eliminate the separation vortex here, thereby delayed airflow breakaway, avoided the stall of big angle of attack leeward leaf.
Description of drawings
Fig. 1 is an assembling assumption diagram of the present invention;
Fig. 2 is a plan view of the present invention;
Fig. 3 is the structural drawing of lift force blade among the present invention;
Fig. 4 is a control panel structural drawing of the present invention
Among the figure: 1 is main shaft; 2 is lift force blade; 3 is connecting rod; 4 is wheel hub; 5 is control panel; 6 is electricity generating device; 7 coupling shafts; 8 is bearing.
Embodiment
In order to deepen to understanding of the present invention, will combine accompanying drawing and embodiment that the present invention is done below and further describe, this embodiment only is used to explain the present invention, and the qualification of protection domain of the present invention in pairs inadequately.
With reference to figure 1, shown in Figure 2: the present invention relates to a kind of vertical axis aerogenerator; Comprise main shaft perpendicular to the ground 1; Be installed in the electricity generating device 6 below the main shaft 1; Be connected the lift force blade 2 of 4, three wing shapes of the upper and lower wheel hub structure on the main shaft 1, said three lift force blades 2 are equally spaced around main shaft 1 through connecting rod 3; Every lift force blade 2 corresponding 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 said every group two connect 3 and strut angulation β; And angle beta is chosen between 30 degree-60 degree, can improve the whole strength of connecting rod with this; Said lower hub is connected with electricity generating device 6 through connecting dish, when the rotation of lift force blade 2 rotating band runner hubs, thereby makes electricity generating device start operation through connecting dish.Wind wheel is in rotary course, and when the angle of attack of fan blade 2 less than the critical angle of attack time, control panel 5 is to be in closed state.
With reference to shown in Figure 3: this figure is the structural drawing of lift force blade 2, and the control panel 5 of an activity is installed on the top end of lift force blade 2, is used for the stall that when the stall of high wind fan blade, slows down fan blade.The rear portion of control panel rides over fan blade 2 leading edges, and slightly upwards lift at the rear portion, and the angle of lifting has restriction.Wind wheel is in rotary course, and when the angle of attack of fan blade 2 less than the critical angle of attack time, control panel 5 is closed, and along with the increasing of wind speed, the angle of attack is also along with increase, and when the angle of attack increased to the critical angle of attack, control panel 5 was opened when fan blade will stall; Control panel opens and lift force blade angulation α, and said α maximum angle is 0～50 degree, and this example is 30 degree; A control panel is installed on the said every lift force blade.
With reference to shown in Figure 4: this case is the control panel mechanism map.Control panel 5 is plates that have radian, and bearing 8 is fixed on the two ends up and down of fan blade 2, and there is an axle 7 centre, is through the foremost of control panel 5.Wind wheel is in rotary course, and when the angle of attack of fan blade 2 less than the critical angle of attack time, control panel 5 is to be in closed state.
Working principle of the present invention is: control panel 5 is plates that have radian, and bearing 8 is fixed on the two ends up and down of fan blade 2, and there is an axle 7 centre, is through the foremost of control panel 5.The rear portion of control panel rides over fan blade 2 leading edges, and slightly upwards lift at the rear portion, and the angle of lifting has restriction.Wind wheel is in rotary course, and when the angle of attack of fan blade 2 less than the critical angle of attack time, control panel 5 is closed; Along with the increasing of wind speed, the angle of attack is also along with increase, when the angle of attack increases to the critical angle of attack; Control panel 5 was opened when fan blade will stall, and it forms the slit with fan blade 2 surfaces, and the higher air communication of fan blade 1 inner side surface pressure is crossed this slit, road and obtained quickening and flowing to fan blade 2 outer side surfaces; Increase the speed of air-flow in the outer side surface boundary layer, reduced pressure, eliminated the separation vortex here; Thereby delayed airflow breakaway, avoided the stall of big angle of attack leeward leaf.
Through calculating, owing to this structure has been removed electromagnetic brake device in the generator, can the cost of vertical-axis generators be reduced 15%, owing to avoided the stall of fan blade, can make the whole raising about 40% of generating capacity.
Claims (3)
1. vertical axis aerogenerator; Comprise main shaft perpendicular to the ground; Electricity generating device, lift force blade; It is characterized in that: said lift force blade is a wing shape structure, and links to each other with main shaft and be equally spaced around main shaft through connecting rod, wheel hub, and the control panel that slows down stall also is installed on the said lift force blade.
2. vertical axis aerogenerator according to claim 1 is characterized in that: said control panel and lift force blade form maximum angle α when fan blade will stall conditions take place, and said α angle is 0～50 degree.
3. vertical axis aerogenerator according to claim 1 and 2 is characterized in that: it is 1 that control panel quantity is housed on the said every lift force 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 true CN102650262A (en) | 2012-08-29 |
| CN102650262B CN102650262B (en) | 2017-02-08 |
Family
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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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745797A (en) * | 2017-09-12 | 2018-03-02 | 廖超辉 | A kind of slit wing, a kind of compound wing and its a kind of slit machine leaf |
| CN112061884A (en) * | 2020-09-14 | 2020-12-11 | 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 |
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| CN2040168U (en) * | 1988-06-27 | 1989-06-28 | 王涧峰 | Wind adjustable vertical shaft wind-driven engine |
| CN101598105A (en) * | 2008-06-06 | 2009-12-09 | 中国科学院工程热物理研究所 | The device that control blade surface streaming flow separates |
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| EP2153058A2 (en) * | 2006-11-02 | 2010-02-17 | Lignum Vitae Limited | Wind rotor blade and wind turbine comprising such blade |
| CN101903646A (en) * | 2007-12-21 | 2010-12-01 | 维斯塔斯风力系统有限公司 | Active flow control device and method for affecting a fluid boundary layer of a wind turbine blade |
| EP2282052A2 (en) * | 2009-06-30 | 2011-02-09 | General Electric Company | Method and apparatus for increasing lift on wind turbine blade |
| CN102094769A (en) * | 2011-02-24 | 2011-06-15 | 西北工业大学 | Wind machine blade airfoil profile capable of controlling flow stalling through standing vortex |
| CN102135068A (en) * | 2011-04-01 | 2011-07-27 | 马嗣锋 | Wing span type self-adapting blade structure |
| GB2477509A (en) * | 2010-02-04 | 2011-08-10 | Rolls Royce Plc | A vertical axis turbine foil structure with surface fluid transfer openings |
| DE102010027003A1 (en) * | 2010-07-13 | 2012-01-19 | Carl Von Ossietzky Universität Oldenburg | Rotor for wind power plant, has slats and rotor blade connected together by slat angle adjustment unit to adjust angle between slats and blade, where unit comprises rotation axis parallel to longitudinal axis of rotor blade |
| CN202579029U (en) * | 2012-04-24 | 2012-12-05 | 李�杰 | Vertical axis wind driven generator with controllable stalling of fan blade |
| EP2549097A1 (en) * | 2011-07-20 | 2013-01-23 | LM Wind Power A/S | Wind turbine blade with lift-regulating means |
-
2012
- 2012-04-24 CN CN201210133269.8A patent/CN102650262B/en not_active Expired - Fee Related
Patent Citations (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 |
| CN101622448A (en) * | 2007-02-20 | 2010-01-06 | 野口常夫 | Vertical shaft windmill |
| CN101903646A (en) * | 2007-12-21 | 2010-12-01 | 维斯塔斯风力系统有限公司 | Active flow control device and method for affecting a fluid boundary layer of a wind turbine blade |
| CN101598105A (en) * | 2008-06-06 | 2009-12-09 | 中国科学院工程热物理研究所 | The device that control blade surface streaming flow separates |
| EP2282052A2 (en) * | 2009-06-30 | 2011-02-09 | 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 |
| DE102010027003A1 (en) * | 2010-07-13 | 2012-01-19 | Carl Von Ossietzky Universität Oldenburg | Rotor for wind power plant, has slats and rotor blade connected together by slat angle adjustment unit to adjust angle between slats and blade, where unit comprises rotation axis parallel to longitudinal axis of rotor blade |
| CN102094769A (en) * | 2011-02-24 | 2011-06-15 | 西北工业大学 | Wind machine blade airfoil profile capable of controlling flow stalling through standing vortex |
| CN102135068A (en) * | 2011-04-01 | 2011-07-27 | 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745797A (en) * | 2017-09-12 | 2018-03-02 | 廖超辉 | A kind of slit wing, a kind of compound wing and its a kind of slit machine leaf |
| 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 |
| CN112061884A (en) * | 2020-09-14 | 2020-12-11 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102650262B (en) | 2017-02-08 |
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| C14 | Grant of patent or utility model | ||
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| 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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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 |