CN101994643B - Wind wheel structure and wind wheel installation method of lift force vertical axis wind turbine - Google Patents
Wind wheel structure and wind wheel installation method of lift force vertical axis wind turbine Download PDFInfo
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- CN101994643B CN101994643B CN 200910168434 CN200910168434A CN101994643B CN 101994643 B CN101994643 B CN 101994643B CN 200910168434 CN200910168434 CN 200910168434 CN 200910168434 A CN200910168434 A CN 200910168434A CN 101994643 B CN101994643 B CN 101994643B
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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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Abstract
The invention relates to a lift force vertical axis wind turbine, in particular to a wind wheel structure and a wind wheel installation method. In the wind wheel structure, a plurality of blades are connected with a vertical axis through an upper support wing and a lower support wing to form a wind wheel, wherein the lower support wing is connected with the lower end parts of the blades; the connecting positions of the lower support wing and the blades are on the same horizontal plane; the upper support wing is connected with the blades; and the connecting positions of the upper support wing and the blades are from a position which is 1/2 of the height of the blades to a position which is 1/3 away from the upper end parts of the blades and are on the same horizontal plane. The wind wheel structure and the wind wheel installation method improve the power output and stability of the vertical axis wind turbine and are particularly suitable for kilowatt large and medium vertical axis wind turbines.
Description
Technical field
The present invention relates to the lift vertical shaft wind-driven generator, refer to a kind of installation method especially, significantly improve the delivery efficiency of vertical axis aerogenerator with this through change wind wheel structure and wind wheel.
Technical background
For technical field of wind power generator, at first need clear and definite following technical term and definition commonly used:
Vertical axis aerogenerator according to the difference of wind-driven generator running shaft in the direction in space position, is divided into the horizontal axis wind-driven generator of substantially horizontal and the vertical axis aerogenerator of Vertical direction.
Wind wheel, vertical axis aerogenerator are crossed supporting wing by some blade pass and are connected with vertical shaft (central shaft), constitute wind wheel.
Vertical axis aerogenerator can be divided into resistance type and lift-type, and their principle and structure all are inequality, and the blade of resistance type wind wheel can adopt similar wind bowl, hemisphere type, semi-circular staving, one flat plate even.The characteristic of resistance type wind wheel is that the linear velocity of wind wheel rotation is lower than wind speed forever, but the maximal wind-energy utilization ratio of resistance type wind wheel is no more than 2/27.
In order to overcome the poor efficiency of the vertical wind wheel of resistance type, people have invented the vertical wind wheel of lift-type again.Lifting wind wheel is to utilize two different shapes of blade, when wind at blade surface, because the cause of blade dihedron shape and blade angle; The wind speed of blade outer surface and internal surface is different, and it is poor so just to have formed wind speed at the outer surface of blade and internal surface, can know from fluid mechanics; When inside and outside superficial fluid velocity is inconsistent; Between two surfaces, formed pressure difference, lift just is when selecting certain blade angle (angle between blade inlet edge and trailing edge line and the wind wheel turning circle tangent line); Because the component of the lift that pressure difference produced just will produce the driving moment around the wind wheel gyration center, make the wind wheel rotation.
The notable attribute of lifting wind wheel be blade must have certain aerofoil profile and blade angle less; Aerofoil profile in the normally existing open aerofoil profile storehouse of aerofoil profile; Or the new aerofoil profile formed of two different curves that utilize two kinds of different airfoil profiles in these open aerofoil profile storehouses; But or satisfy the aerofoil profile that Second Order Continuous derived function curve is formed at least by a plurality of; Or the aerofoil profile of forming by SPL, so the linear velocity of wind wheel rotation is usually all much larger than wind speed, and any parts in the wind wheel all will be to the very big influence of efficient generation of vertical blower fan with shape.
Like Fig. 1, Fig. 2, Fig. 3 and Fig. 4 is typical several kinds of wind wheel structure of lift vertical shaft wind generator and installation method thereof, in Fig. 1, Fig. 2, Fig. 3, and blade 1, supporting wing 2, generator 3 and central shaft 4.In these lift vertical shaft wind-driven generators, Fig. 1, Fig. 2 and Fig. 3 generator all place the inside of wind wheel to shorten the length of central shaft, can make that also the structure of wind wheel is more compact so that the processing of central shaft is more easy like this.But because generator is inner at wind wheel, changed the inner flow field of wind wheel, made generator produce eddy current on every side, increased resistance, reduced the efficient of wind wheel.And generator places the bottom of wind wheel among Fig. 4, and this wind wheel structure can obviously be raised the efficiency, but central shaft is longer, and wind wheel is easy to generate and waves, and only is suitable for hundreds of watts to several kilowatts small-sized vertical blower fan.
Summary of the invention
The present invention is directed to the deficiency of above-mentioned existing technology; Overcome the defective in the existing vertical axis aerogenerator design; A kind of wind wheel structure of lift vertical shaft wind generator and installation method thereof are proposed; To improve the power output and the stability of vertical axis aerogenerator, be particularly useful for the large and medium-sized vertical axis aerogenerator more than several kilowatts.
Concrete technological scheme of the present invention is following:
A kind of wind wheel structure of lift vertical shaft wind generator is crossed upper and lower supporting wing by some blade pass and is connected with vertical shaft, constitutes wind wheel,
Said blade; Its aerofoil profile is the aerofoil profile in the existing open aerofoil profile storehouse, or the aerofoil profile of utilizing two different curves of two kinds of aerofoil profiles in the existing open aerofoil profile storehouse to form, but or satisfy the aerofoil profile that Second Order Continuous derived function curve is formed at least by a plurality of; Or the aerofoil profile of forming by SPL; The nonreentrant surface of blade is installed towards vertical shaft, and blade angle is between 0～12 degree
Its characteristics are that described supporting wing down is connected with the blade underpart, and the connection part of following supporting wing and blade underpart is in same horizontal plane; The described supporting wing of going up is connected with blade, the joint bit position from blade height 1/2 extremely apart from 1/3 place, blade upper end portion, the connection part of last supporting wing and blade is in same horizontal plane.When wind wheel rotated, upper and lower supporting wing formed closed housing with blade, to keep the wind wheel external and internal pressure poor, raised the efficiency.
Further, be fixedly connected through the steel wire symmetry between each blade upper end portion, the wind wheel pressure inside is stable when rotating with further maintenance wind wheel, and strengthens the intensity of blade upper end, avoids rupturing.
Further, above-mentioned blade upper/lower terminal portion is fixedly connected with vertical shaft through steel wire, and the wind wheel pressure inside is stable during with further maintenance wind wheel rotation, and the intensity on the enhancing blade, avoids rupturing.
A kind of lift vertical shaft wind turbines rotor installation method adopts aforesaid wind wheel structure, and along wind wheel axis arranged generator position, in the horizontal direction, the generator upper-end surface is lower than the position, blade underpart that is connected with following supporting wing.
The present invention to improve the power output and the stability of vertical axis aerogenerator, is particularly useful for the large and medium-sized vertical axis aerogenerator more than several kilowatts through the improvement to wind wheel structure and installation method.
The present invention will combine accompanying drawing and embodiment to describe below.
Description of drawings
Fig. 1 is embodiment's 2 existing a kind of type lifting vertical shaft wind wheel schematic representation.
Fig. 2 is existing another type lifting vertical shaft wind wheel schematic representation.
Fig. 3 is existing another type lifting vertical shaft wind wheel schematic representation.
Fig. 4 is embodiment's 1 existing type lifting vertical shaft wind wheel schematic representation.
Fig. 5 is the schematic representation of the embodiment of the invention 3 connection parts at 1/2 place of blade height.
Fig. 6, Fig. 7 are the schematic representation that the blade upper end portion is connected with blade through steel wire.
Fig. 8, Fig. 9 are the schematic representation that blade upper/lower terminal portion is fixedly connected with vertical shaft through steel wire.
Figure 10 is the schematic representation of the embodiment of the invention 4 connection parts apart from 1/3 place, blade upper end portion.
Reference character: blade 1, supporting wing 2, generator 3, central shaft 4.
Embodiment
Can further be well understood to the present invention through specific embodiment of the present invention given below, but they not to qualification of the present invention.
Embodiment one
Choose the Goe63 aerofoil profile, select 5 blades for use and form wind wheel, 1.36 meters of rotor diameters by method like Fig. 4; 1 meter of length of blade, blade upper and lower two are held row level with both hands and are connected with main shaft, and the blade bottom is on the generator upper-end surface; When wind tunnel speed is 10 meter per seconds, record 158 watts of power.
Embodiment two
Choose the Goe63 aerofoil profile, select 5 blades for use and form wind wheel, 1.36 meters of rotor diameters by method like Fig. 1; 1 meter of length of blade; Upper and lower two ends of blade each 1/4 place is parallel is connected with main shaft, generator is positioned at 1/4 place, blade lower end of alignment of shafts position, is positioned on the blade lower end bottom the generator; When wind tunnel speed is 10 meter per seconds, record 115 watts of power.
Embodiment three
Choose the Goe63 aerofoil profile, select 5 blades for use and form wind wheel, 1.36 meters of rotor diameters by method like Fig. 5; 1 meter of length of blade, the blade lower end is parallel to be connected with main shaft, and 1/2 place is parallel in the middle part of the blade is connected with main shaft; Generator is positioned at the blade bottom of alignment of shafts position; The generator upper-end surface is positioned under the blade lower end, when wind tunnel speed is 10 meter per seconds, records 143 watts of power.
In embodiment 3, like Fig. 6, shown in Figure 7, can between each blade upper end portion, be fixedly connected through the steel wire symmetry, the wind wheel pressure inside is stable when rotating with further maintenance wind wheel, and strengthens the intensity of blade upper end, avoids rupturing.
Embodiment four
Choose the Goe63 aerofoil profile, select 5 blades for use and form wind wheel, 1.36 meters of rotor diameters by method like Fig. 5; 1 meter of length of blade, the blade lower end is parallel to be connected with main shaft, and 1/3 place is parallel below the vane tip is connected with main shaft; Generator is positioned at the blade bottom of alignment of shafts position; The generator upper-end surface is positioned under the blade lower end, when wind tunnel speed is 10 meter per seconds, records 148 watts of power.
Perhaps, like Fig. 8, shown in Figure 9, be fixedly connected with vertical shaft through steel wire in blade upper/lower terminal portion, the wind wheel pressure inside is stable when rotating with further maintenance wind wheel, and strengthens the intensity of blade upper end, avoids rupturing.
Below be the summary of above-mentioned tunnel test table:
With embodiment's 1 measured power is benchmark; Thus it is clear that, in the foregoing description, under all identical situation of other condition; Adopt wind wheel structure of the present invention and wind wheel installation method, the power ratio that records adopts wind wheel structure of the prior art and wind wheel installation method can exceed 18%-21%.
Although the present invention has been done detailed explanation and has quoted some specific embodiments as proof, to those skilled in the art, only however mentality of designing and the scope of leaving the inventor also can to do various variations and correction be obvious.
Claims (4)
1. a wind wheel structure of lift vertical shaft wind generator is crossed upper and lower supporting wing by some blade pass and is connected with vertical shaft, constitutes wind wheel,
Said blade; Its aerofoil profile is the aerofoil profile in the existing open aerofoil profile storehouse, or the aerofoil profile of utilizing two different curves of two kinds of aerofoil profiles in the existing open aerofoil profile storehouse to form, but or satisfy the aerofoil profile that Second Order Continuous derived function curve is formed at least by a plurality of; Or the aerofoil profile of forming by SPL; The nonreentrant surface of blade is installed towards vertical shaft, and blade angle is between 0～12 degree
It is characterized in that; Described supporting wing down is connected with the blade underpart; The connection part of following supporting wing and blade underpart is in same horizontal plane; The described supporting wing of going up is connected with blade, the joint bit position from blade height 1/2 extremely apart from 1/3 place, blade upper end portion, the connection part of last supporting wing and blade is in same horizontal plane.
2. wind wheel structure of lift vertical shaft wind generator according to claim 1 is characterized in that, is fixedly connected through the steel wire symmetry between the said blade upper end portion.
3. wind wheel structure of lift vertical shaft wind generator according to claim 1 is characterised in that, said blade upper/lower terminal portion is fixedly connected with vertical shaft through steel wire.
4. lift vertical shaft wind turbines rotor installation method; Adopt like described any one wind wheel structure of claim 1～3; Along wind wheel axis arranged generator position, in the horizontal direction, the generator upper-end surface is lower than the position, blade underpart that is connected with following supporting wing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910168434 CN101994643B (en) | 2009-08-19 | 2009-08-19 | Wind wheel structure and wind wheel installation method of lift force vertical axis wind turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910168434 CN101994643B (en) | 2009-08-19 | 2009-08-19 | Wind wheel structure and wind wheel installation method of lift force vertical axis wind turbine |
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| Publication Number | Publication Date |
|---|---|
| CN101994643A CN101994643A (en) | 2011-03-30 |
| CN101994643B true CN101994643B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910168434 Expired - Fee Related CN101994643B (en) | 2009-08-19 | 2009-08-19 | Wind wheel structure and wind wheel installation method of lift force vertical axis wind turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102837163B (en) * | 2012-09-26 | 2014-08-06 | 卧龙电气集团股份有限公司 | Manufacturing method of backward inclined fan blade of high efficiency motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004293409A (en) * | 2003-03-27 | 2004-10-21 | Toshiba Corp | Windmill device and wind power generation device using the same |
| CN2802117Y (en) * | 2005-06-23 | 2006-08-02 | 张伟星 | Vertical shaft windmill device |
| CN1831330A (en) * | 2006-03-29 | 2006-09-13 | 严强 | Mounting method for blade of vertical axle wind-mill generator |
| CN2900849Y (en) * | 2006-03-10 | 2007-05-16 | 李莉 | Wind power generator |
| CN101100973A (en) * | 2006-08-09 | 2008-01-09 | 严强 | Small wing device of perpendicular shaft wind-driven generator |
| JP2008202499A (en) * | 2007-02-20 | 2008-09-04 | Campus Create Co Ltd | Rotary wing |
-
2009
- 2009-08-19 CN CN 200910168434 patent/CN101994643B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004293409A (en) * | 2003-03-27 | 2004-10-21 | Toshiba Corp | Windmill device and wind power generation device using the same |
| CN2802117Y (en) * | 2005-06-23 | 2006-08-02 | 张伟星 | Vertical shaft windmill device |
| CN2900849Y (en) * | 2006-03-10 | 2007-05-16 | 李莉 | Wind power generator |
| CN1831330A (en) * | 2006-03-29 | 2006-09-13 | 严强 | Mounting method for blade of vertical axle wind-mill generator |
| CN101100973A (en) * | 2006-08-09 | 2008-01-09 | 严强 | Small wing device of perpendicular shaft wind-driven generator |
| JP2008202499A (en) * | 2007-02-20 | 2008-09-04 | Campus Create Co Ltd | Rotary wing |
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| CN101994643A (en) | 2011-03-30 |
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