CN103075299A - Vertical-axis wind turbine blade and machining method - Google Patents
Vertical-axis wind turbine blade and machining method Download PDFInfo
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- CN103075299A CN103075299A CN201310009801XA CN201310009801A CN103075299A CN 103075299 A CN103075299 A CN 103075299A CN 201310009801X A CN201310009801X A CN 201310009801XA CN 201310009801 A CN201310009801 A CN 201310009801A CN 103075299 A CN103075299 A CN 103075299A
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a vertical-axis wind turbine blade and a machining method. The machining method comprises the following steps of: obliquely cutting an aluminum alloy plate into strips, wherein an inclination angle is obtained through calculation according to the height and the chord length of a helical blade; machining the aluminum strips into wedges in cross section, wherein the length, the width and the wedge angle of the wedge-shaped cross sections are obtained through calculation through NACA4418 conversion; closely arranging the wedge-shaped aluminum strips in parallel and fixedly connecting the end parts of the aluminum strips through welding or other methods to form a rectangular aluminum plate; curling the aluminum plate into a cylinder by using a plate curling machine, wherein the curling radius is the rotating radius of the required helical blade; detaching the curled aluminum strips and drawing the two ends of the aluminum strips along the axial direction of the cylinder till height-diameter ratio (h/d) is equal to 2.4; and cutting off the aluminum strips into two parts with equal height and slightly grinding edges to the shape of an NACA4418 section to obtain two helical blades. The vertical-axis wind turbine blade and the machining method have the advantages that the problem in machining the complex curved surface of the helical blade is solved, the wind energy utilization ratio in China is greatly improved and the development of the wind power industry is promoted.
Description
The application is application number: 201110268532.X, the applying date: 2011.09.13, title: the dividing an application of " screw type blade of vertical axis wind turbine and the processing method of wind-power electricity generation ".
Technical field
The present invention relates to a kind of processing method of screw type blade of vertical axis wind turbine of wind-power electricity generation.
Background technique
The vertical axis wind electric generator mainly is divided into four kinds: Savonius type, Darrieus type, H type and Scroll-type.The Savonius type belongs to shaft resistance type windmill, and detent torque is large, and is good to the wind energy capturing ability during low wind speed, but wind energy utilization is low, and because its wind energy conversion efficiency is not high, seldom uses; The Darrieus type belongs to the lift-type wind energy conversion system, and efficient is higher but self-startup ability is poor, and blade processing is very complicated; The H type is the type that grows up on the Darrieus type wind energy conversion system basis, self-startup ability is good, simple in structure, that present vertical axis aerogenerator uses maximum types, but it is high that it requires to start wind speed, low because of wind speed in the residential belt, the wind regime complexity often is in outage state or unstable working state (such as energy pulsation and startup dead angle etc.); Scroll-type is the good environmental adaptability lower to air density then.The stand in great numbers urban area of wind regime complexity of the villages and small towns of therefore owing to enrich for wind resource and high building, the above-mentioned type vertical axis aerogenerator is not too applicable, need to carry out architecture advances and performance optimization.Utility model patent 201020112299.7 fails to illustrate the concrete structure of spiral vane with the suitably distortion and spiral vane combination use of S type blade, and Wind Power Utilization is in confused situation.
Summary of the invention
The object of the present invention is to provide a kind of screw type blade of vertical axis wind turbine and processing method of easy to process, wind-power electricity generation that usability is good.
Technical solution of the present invention is:
A kind of screw type blade of vertical axis wind turbine of wind-power electricity generation, it is characterized in that: blade is spiral-shaped structure, angle of rotation is 180 °, ratio of height to diameter h/d is 1.2, blade material is the aluminum alloy solid structure, the blade horizontal cross sectional geometry is identical or approximate with USS United States Standard aviation aerofoil profile NACA4418, and the blade two end part process respectively through hole, is used for being connected with the wind energy conversion system fixed disc.
A kind of processing method of screw type blade of vertical axis wind turbine of wind-power electricity generation is characterized in that: comprise the following steps:
(1) with the oblique strip that cuts into of aluminium alloy plate, tilt angle alpha is calculated by screw type blade height and chord length;
(2) aluminum strip being processed into cross section is wedge shape, and the length and width of wedge shape section and the angle of wedge are calculated by the NACA4418 conversion;
(3) some wedge shape aluminum strips closely are arranged in parallel each aluminum strip end welding or the affixed one-tenth parallelogram of employing additive method aluminium sheet;
(4) with plate bending rolls aluminium sheet is curled into semi-cylindrical shaped, its crimp radius is the turning radius of required helical blade;
(5) aluminum strip after curling is taken apart, corner angle are polished a little to the NACA4418 sectional shape, be a helical blade.
A kind of processing method of screw type blade of vertical axis wind turbine of wind-power electricity generation is characterized in that: comprise the following steps:
(1) with the oblique strip that cuts into of aluminium alloy plate, tilt angle alpha is calculated by screw type blade height and chord length;
(2) aluminum strip being processed into cross section is wedge shape, and the length and width of wedge shape section and the angle of wedge are calculated by the NACA4418 conversion;
(3) some inclined wedge-shaped aluminum strips closely are arranged in parallel each aluminum strip end welding or the affixed orthogonal aluminium sheet of employing additive method;
(4) with plate bending rolls aluminium sheet is curled into cylindrical shape, its crimp radius is the turning radius of required helical blade;
(5) aluminum strip after curling is taken apart, drawn the two ends of aluminum strip to ratio of height to diameter h/d=2.4 along the cylinder axis direction;
(6) aluminum strip is blocked into the two-part that highly equate, corner angle are polished a little to the NACA4418 sectional shape, be two helical blades.
The present invention has overcome the vertical axis windmill energy pulse and has started the shortcoming at dead angle, solved vertical axis aerogenerator and be not suitable for city that wind resource owes to enrich and the problem of densely populated areas wind regime complexity, solved the vertical axis windmill energy pulse and started the problem at dead angle; Solve the problem of screw type blade complex surface machining, will significantly promote China's Wind Power Utilization ratio, promoted 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 for using the vertical shaft screw type wind energy conversion system structural representation of blade of the present invention;
Fig. 2 is up and down disc holder plan view of vertical shaft screw type wind energy conversion system;
Fig. 3 is blade plan view of the present invention;
Fig. 4 is blade plan view of the present invention;
Fig. 5 is mounted blade figure of the present invention;
Fig. 6 blade section figure of the present invention;
Fig. 7 is the curling rear blade sectional drawing of the present invention;
Fig. 8 is the present invention's rear blade sectional drawing of polishing;
Fig. 9 is vertical shaft screw type wind energy conversion system fundamental diagram.
Embodiment
Take three blades as example, see accompanying drawing 1.Vertical shaft screw type wind energy conversion system of the present invention comprises basic platform 1, welding column 21 above basic platform central authorities, two bearings 51,52 are assembled respectively at a distance of the h distance in column 21 tops, and the two bearings outer ring cooperates with bearing housing 22, bearing housing 22 and disc holder 31 up and down, 32 are fixed with screw, and 3 blade 4 ends are individually fixed in lower disc and prop up 31,32, blade 4 circumferentially evenly distributes around column 21, consists of wind wheel.Wind wheel is realized absorption and the conversion of wind energy.
Basic platform 1 can be reinforced concrete platform, can be steel plate, also can be steel frame construction.Require the upper surface of basic platform 1 parallel with horizontal plane during construction.
Bearing 22 two ends machining bearing fitting surfaces and locating face to be installing bearing 51,52, and with bearing the transition fit relation is arranged.Bearing housing 22 materials are seamless steel pipe.
Screw type blade 4 is take AS aerofoil profile NACA4418 as basis, totally 3.Blade 4 adopts solid construction, and material is aluminum alloy, and the plan view of blade 4 is seen accompanying drawing 3, and plan view is seen accompanying drawing 4.The circumscribed cylinder diameter of blade 4 is d, and height is h, and the ratio of height to diameter h/d of blade 4 gets 1.2.The angle of rotation of blade 4 is 180 °.
The unfolded drawing of blade 4 and sectional view are seen accompanying drawing 5, Fig. 6.α can be calculated by ratio of height to diameter h/d=1.2 among the figure
Cross section A-A is to prolong the cutting plane of blade 4 axis, section B-B be parallel to horizontal plane cutting plane.Wind energy conversion system lift is take the B-B section as benchmark.According to AS aerofoil profile NACA4418 curve, desirable B-B cross-sectional profile dimension scale is shown in B-B section among Fig. 6.
Blade 4 making methods are as follows:
Method one: with the oblique strip that cuts into of aluminium alloy plate, tilt angle alpha is calculated by screw type blade height and chord length; It is wedge shape that aluminum strip is processed into cross section, and the length and width of wedge shape section and the angle of wedge are calculated by the NACA4418 conversion, see A-A sectional drawing in the accompanying drawing 6, and aluminum alloy bar length computation formula is:
Because it is substantially constant to roll process Leaf material thickness, so the consistency of thickness that inclined wedge-shaped thickness and B-B section provide; Because A-A section and B-B section have α angular projection relation, so the inclined wedge-shaped length computation formula of A-A sectional drawing is respectively l
1=17bcos α and l
2=6bcos α.Some wedge shape aluminum strips closely are arranged in parallel each aluminum strip end welding or the affixed one-tenth parallelogram of employing additive method aluminium sheet; Then with plate bending rolls aluminium sheet is curled into semi-cylindrical shaped, its crimp radius is the turning radius of required helical blade, and the angle of rotation that can guarantee each blade is 180 °; Aluminum strip after curling is taken apart, corner angle are polished a little to NACA4418 sectional shape (profile shown in the accompanying drawing 7), the final horizontal section shape as shown in Figure 8 that forms gets final product, and is a helical blade.
Method two: with the oblique strip that cuts into of aluminium alloy plate, tilt angle alpha is calculated by screw type blade height and chord length; It is wedge shape that aluminum strip is processed into cross section, and the length and width of wedge shape section and the angle of wedge are calculated by the NACA4418 conversion; Some inclined wedge-shaped aluminum strips closely are arranged in parallel each aluminum strip end welding or the affixed orthogonal aluminium sheet of employing additive method; With plate bending rolls aluminium sheet is curled into cylindrical shape, its crimp radius is the turning radius of required helical blade; Aluminum strip after curling is taken apart, drawn the two ends of aluminum strip to ratio of height to diameter h/d=2.4 along the cylinder axis direction; Aluminum strip is blocked into the two-part that highly equate, corner angle are polished a little to NACA4418 sectional shape (profile shown in the accompanying drawing 7), the final horizontal section shape as shown in Figure 8 that forms gets final product, and is two helical blades.
Blade 4 ends connect with screw with disc holder 31,32 up and down.
In when work, wind blows on the screw type wind wheel with certain orientation and certain speed, and the principle of aerodynamically all has 3 positions on arbitrary cross section that is parallel to horizontal plane on the wind wheel and is subject to wind action, sees accompanying drawing 8.Because the cross-sectional dimension of blade 4 is far smaller than the rotor diameter size, so blade 4 suffered resistances are far smaller than lift, make a concerted effort to prolong wind wheel radially and after tangential the decomposition, tangential wind-force always makes blade turn clockwise so each cross section of blade is suffered.Each blade prolongs column 21 axial direction integrations from lower disc support 32 to upper disc holder 31, integrating range length is h, and what just can obtain each blade turns power moment, and the power moment stack that turns of 3 blades is just obtained the total moment of rotation of wind energy conversion system.Because the blade rotary angle is 180 °, and at least 2 of lobe numbers, so in the constant situation of wind-force, one week of wind wheel, the upper tangential couple that forms was constant, so wind speed round n is invariable, fluctuation can not occur.
If at column driving mechanism and generator are installed, the wind energy transformation that just wind energy conversion system can be caught is electric energy.
Claims (1)
1. the processing method of a blade of vertical axis wind turbine is characterized in that: comprise the following steps:
(1) with the oblique strip that cuts into of aluminium alloy plate, tilt angle alpha is calculated by screw type blade height and chord length;
(2) aluminum strip being processed into cross section is wedge shape, and the length and width of wedge shape section and the angle of wedge are calculated by the NACA4418 conversion;
(3) some inclined wedge-shaped aluminum strips closely are arranged in parallel each aluminum strip end welding or the affixed orthogonal aluminium sheet of employing additive method;
(4) with plate bending rolls aluminium sheet is curled into cylindrical shape, its crimp radius is the turning radius of required helical blade;
(5) aluminum strip after curling is taken apart, drawn the two ends of aluminum strip to ratio of height to diameter h/d=2.4 along the cylinder axis direction;
(6) aluminum strip is blocked into the two-part that highly equate, corner angle are polished a little to the NACA4418 sectional shape, be two helical blades;
Blade is spiral-shaped structure, and angle of rotation is 180 °, and ratio of height to diameter h/d is 1.2, blade material is the aluminum alloy solid structure, the blade horizontal cross sectional geometry is identical or approximate with USS United States Standard aviation aerofoil profile NACA4418, and the blade two end part process respectively through hole, is used for being connected with the wind energy conversion system fixed disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009801.XA CN103075299B (en) | 2011-09-13 | 2011-09-13 | Vertical-axis wind turbine blade and machining method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009801.XA CN103075299B (en) | 2011-09-13 | 2011-09-13 | Vertical-axis wind turbine blade and machining method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110268532 Division CN102345558B (en) | 2011-09-13 | 2011-09-13 | Spiral vertical axis wind turbine blade for wind power generation and machining method |
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| CN103075299A true CN103075299A (en) | 2013-05-01 |
| CN103075299B CN103075299B (en) | 2014-08-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644067A (en) * | 2013-11-22 | 2014-03-19 | 国家电网公司 | Spiral-vane vertical-shaft tide water turbine |
| CN104131940A (en) * | 2014-07-24 | 2014-11-05 | 大连吉诺贸易有限公司 | Fluid dynamic providing system propeller blade |
| CN110755947A (en) * | 2019-11-25 | 2020-02-07 | 佛山市顺德区美的洗涤电器制造有限公司 | Oil fume purifying device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1236030A (en) * | 1982-10-14 | 1988-05-03 | Risto Joutsiniemi | Wind rotor |
| CN1268999A (en) * | 1997-06-30 | 2000-10-04 | 希尔德有限公司 | Helical wind rotor and method for mfg. same |
| CN101779037A (en) * | 2007-06-13 | 2010-07-14 | 斯克罗系统公司 | Wind turbine blade |
| CN201884213U (en) * | 2010-12-17 | 2011-06-29 | 昆明理工峰潮科技有限公司 | Wind power generator with vertical shaft |
-
2011
- 2011-09-13 CN CN201310009801.XA patent/CN103075299B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1236030A (en) * | 1982-10-14 | 1988-05-03 | Risto Joutsiniemi | Wind rotor |
| CN1268999A (en) * | 1997-06-30 | 2000-10-04 | 希尔德有限公司 | Helical wind rotor and method for mfg. same |
| CN101779037A (en) * | 2007-06-13 | 2010-07-14 | 斯克罗系统公司 | Wind turbine blade |
| CN201884213U (en) * | 2010-12-17 | 2011-06-29 | 昆明理工峰潮科技有限公司 | Wind power generator with vertical shaft |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644067A (en) * | 2013-11-22 | 2014-03-19 | 国家电网公司 | Spiral-vane vertical-shaft tide water turbine |
| CN104131940A (en) * | 2014-07-24 | 2014-11-05 | 大连吉诺贸易有限公司 | Fluid dynamic providing system propeller blade |
| CN110755947A (en) * | 2019-11-25 | 2020-02-07 | 佛山市顺德区美的洗涤电器制造有限公司 | Oil fume purifying device |
| CN110755947B (en) * | 2019-11-25 | 2023-09-05 | 佛山市顺德区美的洗涤电器制造有限公司 | Fume purifying device |
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| CN103075299B (en) | 2014-08-06 |
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Effective date of registration: 20190923 Address after: No. 400 Fangchun Road, China (Shanghai) Free Trade Pilot Area, No. 1 Building, 3 Floors, 2013 Patentee after: Shanghai set up Mdt InfoTech Ltd Address before: 226019 Jiangsu city of Nantong province sik Road No. 9 Patentee before: Nantong University |
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Effective date of registration: 20191204 Address after: Room 302, No. 8319, Yanshan Road, Bengbu City, Anhui Province Patentee after: Bengbu Lichao Information Technology Co., Ltd Address before: 3 / F, building 1, No. 400, Fangchun Road, China (Shanghai) pilot Free Trade Zone Patentee before: Shanghai set up Mdt InfoTech Ltd |
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Effective date of registration: 20201120 Address after: Building 2, No. 3, Fuqian Road, Hailing District, Taizhou City, Jiangsu Province Patentee after: Taizhou Haitong Asset Management Co., Ltd Address before: Room 302, No. 8319, Yanshan Road, Bengbu City, Anhui Province Patentee before: Bengbu Lichao Information Technology Co.,Ltd. |