CN102297079B - Vertical-shaft lift-drag coupled wind turbine for wind power generation - Google Patents
Vertical-shaft lift-drag coupled wind turbine for wind power generation Download PDFInfo
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- CN102297079B CN102297079B CN 201110268632 CN201110268632A CN102297079B CN 102297079 B CN102297079 B CN 102297079B CN 201110268632 CN201110268632 CN 201110268632 CN 201110268632 A CN201110268632 A CN 201110268632A CN 102297079 B CN102297079 B CN 102297079B
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power
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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 discloses a vertical-shaft lift-drag coupled wind turbine for wind power generation. The upper surface of the center of a foundation platform is provided with a vertical shaft; the upper part of the vertical shaft is provided with two bearings; a space between the two bearings is 1/3 of the height of a blade; bearing covers cover the two bearings; an outer ring of the each bearing is matched with an inner hole of each bearing cover; a plurality of blades are uniformly distributed along the axial direction of the vertical shaft; each blade is connected with each bearing cover through a support rod to form a wind wheel; each blade has a hollow structure with upper and lower caps; and the upper and lower caps are connected with a movable grid. The vertical-shaft lift-drag coupled wind turbine is reasonable in structure, overcomes defects that a lift type wind turbine cannot be started at a low wind speed and a drag type wind turbine has low wind energy conversion efficiency, solves the problem that a vertical-shaft wind driven generator is not suitable for cities with insufficient wind resources and populated areas with complicated wind conditions, and can greatly improve the wind energy utilization rate of China and promote the development of the wind power industry.
Description
Technical field
The present invention relates to a kind of wind power generation field, be specially the vertical shaft that is applicable to low wind speed or wind regime complex environment and rise resistance coupled mode wind energy conversion system.
Background technique
Utilizing wind energy is to solve one of energy crisis effective way.Existing large scale wind power machine is pressed the wind wheel running shaft in the space mounting direction, is divided into two big types of horizontal-shaft wind turbine and vertical axis windmills.
Vertical axis aerogenerator is compared with horizontal axis wind-driven generator; Have do not need yaw device, blade manufacturing simple, start that wind speed is low, Security good, noise is low, unit occupied area wind energy ability capable of using is high, the installation wind-powered electricity generation machine is simple and transmission part such as gear-box can be placed on ground or pylon bottom; Easy to maintenance, advantage such as manufacture cost and operation maintenance cost are lower.
The vertical axis wind electric generator mainly is divided into four kinds: Savonius type, Darrieus type, H type and Scroll-type.Savonius type automated torque is big, and power is good to the wind energy capturing ability when hanging down wind speed, but low this type machine that makes of wind energy utilization lacks competition on large-scale unit is used; Darrieus type efficient is higher but self-startup ability is poor; The H type is that the Englishman grows up in the straight leaf formula Dari eritrea type process of research, and its self-startup ability is good; The good environmental adaptability that Scroll-type is then lower to air density.Villages and small towns of owing to enrich for wind resource and the high building complicated urban area of wind regime of standing in great numbers, vertical axis aerogenerator is inapplicable.
What existing vertical axis aerogenerator major part adopted is the lift-type wind energy conversion system, often is in outage state or unstable working state in the residential belt because of wind speed hangs down; And shaft resistance type windmill is not high because of its wind energy conversion efficiency, seldom uses.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructurely, overcome that the low wind speed of lift-type wind energy conversion system can not start, the not high shortcoming of shaft resistance type windmill wind energy conversion efficiency, the vertical shaft that is used for wind-power electricity generation of favorable working performance rises resistance coupled mode wind energy conversion system.
Technical solution of the present invention is:
A kind of vertical shaft that is used for wind-power electricity generation rises resistance coupled mode wind energy conversion system, it is characterized in that: comprise basic platform, basic platform central authorities upper surface is provided with vertical shaft; Vertical shaft top is equipped with two bearings, and the distance between two bearings is a lid dress bearing cap respectively on 1/3, two bearing of blade height; And bearing outer ring cooperates with the bearing cap endoporus; There are a plurality of blades axially to be uniformly distributed with, are connected through strut between each blade and the bearing cap, constitute wind wheel along vertical shaft; Said blade is to have the hollow-core construction of capping up and down, and capping is connected with movable screen up and down.
The upper and lower end of screen is connected with the capping up and down of blade through gear mechanism.
Three of screens are one group, and each blade is joined one group, and every group of three screen top and bottom form linking mechanism with connecting rod respectively, guarantee that three screens swing equal angular simultaneously; End-to-end just when screen is closed guarantees that blade can obtain the maximum lift effect.
Said screen is the long strip flake structure; The screen width is greater than 1/3rd of the blade openings chord length; The screen height is less than length of blade, and the metallic pin at screen two ends matches with bearing in the capping, and screen can be swung around metallic pin; Screen pendulum angle scope is 5 ° ~ 70 °, and the screen material is glass fibre reinforced plastics or aluminum alloy or tin plate.
Blade is the hollow thin-shell construction, by leaf tail to leading edge excision 3/4ths, is the semi-surrounding structure in the one of which side, and spoon of blade adopts AS aerofoil profile NACA0018.
Screen can open or closed situation with the formation of blade arc face around a certain axis swing of blade.Blade winds when rotation axle perpendicular to wind direction and can form with the wind and two states that facing the wind, and blade is with the wind the time, and to leading edge, screen receives wind and opens air by the leaf wake flow, and according to the definition of wind-power electricity generation NBS, this moment, blade belonged to the resistance type blade; When blade facingd the wind, air flowed to the leaf tail by leading edge, the screen auto-closing, and this moment, blade belonged to the lift-type blade.Each blade can realize that resistance acting state and lift acting state automatically switch according to the air-flow situation.
Under wind; Each blade shroud rotates a circle around rotor shaft; Screen is accomplished---closure---open continuous variation by opening, and makes wind wheel have one side of something to present the shaft resistance type windmill characteristic all the time, and one side of something then presents lift-type wind energy conversion system characteristic in addition; Or all present closure, present lift-type wind energy conversion system characteristic.During wind speed low (less than 5m/s), the resistance acting is main, and complete machine presents the shaft resistance type windmill characteristic; When wind speed was high, lift acting was main, made the linear velocity of leeward side blade greater than wind speed, so the screen on windward side blade and the leeward side blade all is in closed state, and complete machine is exactly a lift-type wind energy conversion system.
The present invention is rational in infrastructure; Overcome that the low wind speed of lift-type wind energy conversion system can not start, the not high shortcoming of shaft resistance type windmill wind energy conversion efficiency; Solve vertical axis aerogenerator and be not suitable for city and the densely populated areas wind regime complicated problems that wind resource is owed to enrich; To significantly promote China's Wind Power Utilization ratio, promote the development of wind-powered electricity generation industry.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is a structural representation of the present invention;
Fig. 2 opens schematic representation for the present invention rises resistance coupled mode blade screen;
Fig. 3 rises resistance coupled mode blade screen opening and closing angle for the present invention;
Fig. 4 is a liter resistance coupled mode wind energy conversion system working principle schematic representation of the present invention.
Embodiment
With four blades is example, sees accompanying drawing 1.Vertical shaft of the present invention rises resistance coupled mode wind energy conversion system and comprises basic platform 11, welding vertical shaft 21 above basic platform central authorities, and vertical shaft 21 tops are assembled two bearings respectively at a distance of certain distance; Distance between two bearings is 1/3rd of a blade height, and bearing cap 31,32 covers respectively on two bearings; And guarantee that bearing outer ring matches with the bearing cap endoporus, between each blade 51 and the bearing cap with strut 41,42; 43; 44 adopt the Bolt Connection form to fix, and 4 blade shrouds circumferentially evenly distribute around vertical shaft 21, constitute wind wheel.Wind wheel is realized the absorption and the conversion of wind energy.
Bearing cap 31,32 covers on bearing, and with bearing the transition fit relation is arranged. Bearing cap 31,32 materials are the 45# steel, or common stainless steel.
Blade 51 is the basis with AS aerofoil profile NACA0018, totally 4.Blade adopts hollow-core construction, by leaf tail to leading edge excision 3/4ths, sees accompanying drawing 2 in the one of which side, again two end cap upper cover about blade.In the every capping processing three bearing holes, with bearing cap be equipped with bolt with three bearing fixing at capping bearing hole place.Blade 51 materials are glass fibre reinforced plastics or aluminum alloy.Vane thickness and aspect ratio are 1:1000.
Totally 12 of screens 52, three is one group, each blade is joined one group, totally 4 groups, sees accompanying drawing 1.Screen 52 slightly is shorter than blade.Each fixing metallic pin 53 of the two ends of screen 52, metallic pin 53 matches with the capping upper bearing (metal), and screen 52 can be swung around metallic pin 53, and the pendulum angle scope is controlled at 5 ° ~ 70 °, sees accompanying drawing 3.The width of screen 52 is got 1/3rd of blade 51 opening chord lengths, and end-to-end just when making screen 52 closed guarantees that blade can obtain the maximum lift effect.Each fixing another metallic pin 54 of the two ends of screen 52 matches with connecting rod 55, makes three screens 52 form linking mechanisms, guarantees that three screens 52 swing equal angular simultaneously.Screen 52 opens maximum angle and gets 70 ° of the bests by the fluid simulation analysis, through changing the position that blade 51 capping upper bearing (metal) holes and blade 51 are cut edge, can guarantee this angle.During screen 52 closures, back one screen rides on the last screen, and screen 52 can not continue to blade 51 inner swings; Form about 5 ° nature angle; Both guaranteed that blade 51 can obtain the maximum lift effect, guaranteed screen 52 again under air, can be by the closed state smooth opening.For making screen 52 swings freely, do not receive the restriction of blade strut 41,42,43,44, on screen 52, have breach, to avoid strut 41,42,43,44, see accompanying drawing 1 when guaranteeing swing.Screen 52 is glass fibre reinforced plastics or aluminum alloy or tin plate.
Vertical shaft rises resistance coupled mode wind energy conversion system working principle and sees accompanying drawing 4.Under the effect of wind speed υ, the screen 52 of wind energy conversion system right side blade 51 opens, and reaches 70 ° of maximum angular, and the wind that obtain on this blade this moment carries makes a concerted effort to be resistance Fz, and after radially decomposing with the tangential, the component that can promote the wind wheel rotation is Fz1; The screen 52 of wind energy conversion system left side blade 51 is all closed, and the wind that obtain on this blade this moment carries makes a concerted effort to be lift Fs, and after radially decomposing with the tangential, the component that can promote the wind wheel rotation is Fs1; Before and after two blades receive the influence of whirlwind in the middle of the wind wheel, screen 52 opens slightly or is closed, stressed on the blade is above-mentioned Fz and Fs resultant force, so wind energy conversion system can be rotated counterclockwise, and obtains certain rotation speed n.When wind speed was low, Fz was much larger than Fs, and wind energy conversion system presents the shaft resistance type windmill characteristic; When wind speed was high, wind energy conversion system right side blade 51 linear velocities were greater than wind speed υ, and screen 52 receives air all closed, this moment all blades the stressed lift Fs that is, wind energy conversion system presents lift-type wind energy conversion system characteristic.If driving mechanism and generator are installed on vertical shaft, can with the wind energy transformation that wind energy conversion system is caught electric energy just.
Claims (1)
1. a vertical shaft that is used for wind-power electricity generation rises resistance coupled mode wind energy conversion system, it is characterized in that: comprise basic platform, basic platform central authorities upper surface is provided with vertical shaft; Vertical shaft top is equipped with two bearings, and the distance between two bearings is a lid dress bearing cap respectively on 1/3, two bearing of blade height; And bearing outer ring cooperates with the bearing cap endoporus; There are a plurality of blades axially to be uniformly distributed with, are connected through strut between each blade and the bearing cap, constitute wind wheel along vertical shaft; Said blade is to have the hollow-core construction of capping up and down, and capping is connected with movable screen up and down; The upper and lower end of screen is connected with the capping up and down of blade through gear mechanism; Three of screens are one group, and each blade is joined one group, and every group of three screen top and bottom form linking mechanism with connecting rod respectively, guarantee that three screens swing equal angular simultaneously; End-to-end just when screen is closed guarantees that blade can obtain the maximum lift effect; Blade is the hollow thin-shell construction, by leaf tail to leading edge excision 3/4ths, is the semi-surrounding structure in the one of which side, and spoon of blade adopts AS aerofoil profile NACA0018.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110268632 CN102297079B (en) | 2011-09-13 | 2011-09-13 | Vertical-shaft lift-drag coupled wind turbine for wind power generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110268632 CN102297079B (en) | 2011-09-13 | 2011-09-13 | Vertical-shaft lift-drag coupled wind turbine for wind power generation |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210334992.2A Division CN102828902B (en) | 2011-09-13 | 2011-09-13 | Coupled wind machine |
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| CN102297079A CN102297079A (en) | 2011-12-28 |
| CN102297079B true CN102297079B (en) | 2012-12-12 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103603766B (en) * | 2013-11-30 | 2017-01-25 | 米建军 | Wind wheel with variable blades and attack angles |
| CN104314752A (en) * | 2014-10-09 | 2015-01-28 | 东南大学 | Low-speed startup and lift-drag interchangeable type blade vertical axis fan wind wheel system |
| CN105697229A (en) * | 2016-04-14 | 2016-06-22 | 上海理工大学 | Blade for vertical axis wind turbine |
| CN106351798B (en) * | 2016-11-14 | 2019-07-19 | 马丽萍 | A kind of openable and closable upright shaft wind power generation station of leaf sail |
| CN106593768B (en) * | 2017-01-16 | 2023-10-20 | 中国石油大学(华东) | H-shaped vertical axis wind turbine blade real-time variable attack angle device |
| CN107859593A (en) * | 2017-10-31 | 2018-03-30 | 浙江理工大学 | Coupled mode vertical axis aerogenerator and its electricity-generating method |
| CN109025024B (en) * | 2018-08-28 | 2023-07-28 | 潮峰钢构集团有限公司 | Ethylene engineering steel structure net shell and manufacturing process thereof |
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| RU2231682C1 (en) * | 2003-02-25 | 2004-06-27 | Военный инженерно-технический университет | Windmill |
| EP1731758A1 (en) * | 2004-03-31 | 2006-12-13 | Intellectual Property Bank Corp. | Vertical shaft type windmill and blade for windmill |
| CN1719023B (en) * | 2005-07-27 | 2010-05-26 | 王永彰 | Resistance and lifting force composite wind pwoer device |
| CN101793234A (en) * | 2010-04-01 | 2010-08-04 | 赵欣 | Vertical axis three-vane wind generator |
| CN201827023U (en) * | 2010-11-02 | 2011-05-11 | 李国宏 | Blind type vertical shaft wind driven generator |
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Effective date of registration: 20190718 Address after: 226019 Jiangsu city of Nantong province sik Road No. 9 Patentee after: Center for technology transfer, Nantong University Address before: 226019 Jiangsu city of Nantong province sik Road No. 9 Patentee before: Nantong University |
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Effective date of registration: 20191122 Address after: No.1, floor 3, No.319, zhanggongshan Road, Yuhui District, Bengbu City, Anhui Province Patentee after: Bengbu guijiu Intellectual Property Service Co., Ltd Address before: 226019 Jiangsu city of Nantong province sik Road No. 9 Patentee before: Center for technology transfer, Nantong University |
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Effective date of registration: 20201117 Address after: Building 2, No. 3, Fuqian Road, Hailing District, Taizhou City, Jiangsu Province Patentee after: Taizhou Haitong Asset Management Co., Ltd Address before: No.1, floor 3, No.319, zhanggongshan Road, Yuhui District, Bengbu City, Anhui Province Patentee before: Bengbu guijiu Intellectual Property Service Co.,Ltd. |