CN102297079A - 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 PDF

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Publication number
CN102297079A
CN102297079A CN2011102686322A CN201110268632A CN102297079A CN 102297079 A CN102297079 A CN 102297079A CN 2011102686322 A CN2011102686322 A CN 2011102686322A CN 201110268632 A CN201110268632 A CN 201110268632A CN 102297079 A CN102297079 A CN 102297079A
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China
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wind
blade
screen
vertical shaft
bearing
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CN2011102686322A
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CN102297079B (en
Inventor
曹阳
吴国庆
茅靖峰
周井玲
吴树谦
沈世德
朱维南
张旭东
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Taizhou Haitong Asset Management Co Ltd
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Nantong University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/30Wind power
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/74Wind 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

The vertical shaft that is used for wind-power electricity generation rises resistance coupled mode wind energy conversion system
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 horizontal-shaft wind turbine and vertical axis windmill two big classes.
Vertical axis aerogenerator is compared with horizontal axis wind-driven generator, have do not need yaw device, blade manufacturing simple, start transmission part such as the simple and gear-box of wind speed is low, Security good, noise is low, unit occupied area can be utilized wind energy ability height, wind-powered electricity generation machine installation and 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.The stand in great numbers urban area of wind regime complexity of villages and small towns of owing to enrich for wind resource and high building, 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 uniform, are connected by strut between each blade and the bearing cap, constitute wind wheel along vertical shaft; Described 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 by 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.
Described 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, the metallic pin at screen two ends matches with bearing in the capping, 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, excises 3/4ths in the one side by leaf tail to leading edge, is the semi-surrounding structure, 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 two states that can form with the wind and facing the wind, and blade is with the wind the time, air by the leaf wake flow to leading edge, screen wind-engaging power effect and opening, 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 the wind-force effect, each blade shroud rotates a circle around rotor shaft, screen is finished---closure---open continuous variation by opening, make wind wheel have one side of something to present the shaft resistance type windmill feature all the time, one side of something then presents lift-type wind energy conversion system feature in addition, or all present closure, present lift-type wind energy conversion system feature.During wind speed low (less than 5m/s), the resistance acting is main, and complete machine presents the shaft resistance type windmill feature; 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
The invention will be further described below in conjunction with drawings and Examples.
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, 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, bearing cap 31,32 cover 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, 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.
Basic platform 11 can be a reinforced concrete platform, can be steel plate, also can be steel frame construction.Require the upper surface of basic platform 11 parallel during construction with horizontal plane.
Vertical shaft 21 adopts seamless steel pipe or solid steel bar, bottom and basic platform 11 welding, and vertical shaft 21 welds 6-8 sheet stiffening rib with firm vertical shaft 21 with basic platform 11 joints.Require vertical shaft 21 vertical during construction with horizontal plane.Vertical shaft 21 upper end machining bearing fitting surfaces and locating face are to install bearing, and vertical shaft 21 adopts transition fit with cooperating of bearing.
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 strut 41,42,43,44 one ends are connected with bearing cap, and an end is connected with blade, and the joint is fixed with bolt.The strut material is a steel pipe.
Blade 51 is based on AS aerofoil profile NACA0018, totally 4.Blade adopts hollow-core construction, excises 3/4ths in the one side by leaf tail to leading edge, sees accompanying drawing 2, 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 fixes a metallic pin 53 two ends of screen 52, and 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 fixes another metallic pin 54 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, by 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 effect, 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 and tangentially decomposing, the component that can promote the wind wheel rotation is Fz1; The screen 52 of wind energy conversion system left side blade 51 is closure all, and the wind that obtain on this blade this moment carries makes a concerted effort to be lift Fs, and after radially and tangentially decomposing, the component that can promote the wind wheel rotation is Fs1; Before and after two blades be subjected to 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 feature; When wind speed was high, wind energy conversion system right side blade 51 linear velocities were greater than wind speed υ, and screen 52 is subjected to air effect all closed, this moment all blades the stressed lift Fs that is, wind energy conversion system presents lift-type wind energy conversion system feature.If driving mechanism and generator are installed on vertical shaft, just the wind energy transformation that wind energy conversion system can be caught is an electric energy.

Claims (5)

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 uniform, are connected by strut between each blade and the bearing cap, constitute wind wheel along vertical shaft; Described blade is to have the hollow-core construction of capping up and down, and capping is connected with movable screen up and down.
2. the vertical shaft that is used for wind-power electricity generation according to claim 1 rises resistance coupled mode wind energy conversion system, and it is characterized in that: the upper and lower end of screen is connected with the capping up and down of blade by gear mechanism.
3. the vertical shaft that is used for wind-power electricity generation according to claim 2 rises resistance coupled mode wind energy conversion system, it is characterized in that: three of screens are one group, each blade is joined one group, and every group of three screen top and bottom form linking mechanism with connecting rod respectively, guarantees that three screens swing equal angular simultaneously; End-to-end just when screen is closed guarantees that blade can obtain the maximum lift effect.
4. the vertical shaft that is used for wind-power electricity generation according to claim 3 rises resistance coupled mode wind energy conversion system, it is characterized in that: described 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, the metallic pin at screen two ends matches with bearing in the capping, screen can be swung around metallic pin, and screen pendulum angle scope is 5 ° ~ 70 °, and the screen material is glass fibre reinforced plastics or aluminum alloy or tin plate.
5. the vertical shaft that is used for wind-power electricity generation according to claim 3 rises resistance coupled mode wind energy conversion system, it is characterized in that: blade is the hollow thin-shell construction, excise 3/4ths in the one side by leaf tail to leading edge, be the semi-surrounding structure, spoon of blade adopts AS aerofoil profile NACA0018.
CN 201110268632 2011-09-13 2011-09-13 Vertical-shaft lift-drag coupled wind turbine for wind power generation Active CN102297079B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103603766A (en) * 2013-11-30 2014-02-26 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
CN106351798A (en) * 2016-11-14 2017-01-25 马丽萍 Vertical shaft wind power station with openable sails
CN106593768A (en) * 2017-01-16 2017-04-26 中国石油大学(华东) Constantly variable attack-angle device of H-shaped vertical-axis wind driven generator blade
CN107859593A (en) * 2017-10-31 2018-03-30 浙江理工大学 Coupled mode vertical axis aerogenerator and its electricity-generating method
CN109025024A (en) * 2018-08-28 2018-12-18 潮峰钢构集团有限公司 Ethylene project Steel Shell and its manufacturing process

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2231682C1 (en) * 2003-02-25 2004-06-27 Военный инженерно-технический университет Windmill
CN1719023A (en) * 2005-07-27 2006-01-11 王永彰 Resistance and lifting force composite wind pwoer device
CN1938516A (en) * 2004-03-31 2007-03-28 株式会社Ipb Vertical shaft type windmill and blade for windmill
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2231682C1 (en) * 2003-02-25 2004-06-27 Военный инженерно-технический университет Windmill
CN1938516A (en) * 2004-03-31 2007-03-28 株式会社Ipb Vertical shaft type windmill and blade for windmill
CN1719023A (en) * 2005-07-27 2006-01-11 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

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103603766A (en) * 2013-11-30 2014-02-26 米建军 Wind wheel with variable blades and attack angles
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
CN106351798A (en) * 2016-11-14 2017-01-25 马丽萍 Vertical shaft wind power station with openable sails
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
CN106593768A (en) * 2017-01-16 2017-04-26 中国石油大学(华东) Constantly variable attack-angle device of H-shaped vertical-axis wind driven generator blade
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
CN109025024A (en) * 2018-08-28 2018-12-18 潮峰钢构集团有限公司 Ethylene project Steel Shell and its manufacturing process
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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Effective date of registration: 20190718

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