CN104214054B - A kind of small-sized wind power generator blade - Google Patents
A kind of small-sized wind power generator blade Download PDFInfo
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- CN104214054B CN104214054B CN201410439923.7A CN201410439923A CN104214054B CN 104214054 B CN104214054 B CN 104214054B CN 201410439923 A CN201410439923 A CN 201410439923A CN 104214054 B CN104214054 B CN 104214054B
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- blade
- aerofoil profile
- aerofoil
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a kind of small-sized wind power generator blade, the aerofoil profile that blade of the present invention uses top airfoil coordinate meet equation: y1=0.6286*x^4+1.448*x^3 1.454*x^2+0.6346*x+1.274*10^ (4)；The lower aerofoil coordinate of aerofoil profile meets equation: y 2=0.4258*x^4 1.064*x^3+0.6204*x^2+0.01808*x 2.298*10^ (4), and wherein: 0≤x≤1, at 0≤x≤0.02, upper and lower aerofoil seamlessly transits；Blade of the present invention, is obtained according to design and installation angle structure by aerofoil profile, and this blade is compared with rule blade, and efficiency improves 26.48%.
Description
Technical field
The present invention relates to a kind of generating equipment, particularly to a kind of small-sized wind power generator blade.
Technical background
Wind energy, inexhaustible.In the world today of resource scarcity, effectively utilizing of wind energy is got over
More receive significant attention.
Small wind, as a supplementary technology of Wind Power Generation Industry, completes or solves large-scale wind electricity industry not
Can complete or indeterminable problem.Such as in China Fujian, province, Deng Di wind speed district, Yunnan, due to wind
Speed is the most relatively low, it is impossible to meet the work requirements of large scale wind power machine, and large-scale wind electricity does not possess development in locality
Condition, and wind speed is required relatively low small wind turbine, but there is the bigger market space in locality.
The wind energy resources distribution situation of China determines small wind turbine and has wide sending out in China's most area
Exhibition prospect.
Aerofoil profile determines Blade Properties, and blade determines wind energy conversion system efficiency.Small wind turbine is improved and
During putting forward effect, blade is crucial, and aerofoil profile is basis.
The present invention finds inspiration from bionics, through the correlational study to birds wing, sums up one
New aerofoil, and aerofoil profile builds the established angle of blade and corresponding chord length is designed, obtains a kind of new little
Type blade of wind-driven generator.Learning through test, blade of the present invention is compared with rule blade, and efficiency carries
High by 26.48%.
Summary of the invention
It is an object of the invention to provide a kind of small-sized wind power generator blade, the present invention is directed to existing Miniature wind
The phenomenon that power engine efficiency has much room for improvement, it is provided that the modified parameters of pneumatic equipment blades, including aerofoil profile coordinate side
Journey, the established angle of aerofoil profile and corresponding chord length when building blade, improve the wind energy profit of small-sized wind power generator
By rate.
Blade of the present invention (2) is made up of aerofoil profile (1), wherein the top airfoil A coordinate of aerofoil profile (1)
Meet equation:
Y1=-0.6286*x^4+1.448*x^3-1.454*x^2+0.6346*x+1.274*10^ (-4) (I),
The lower aerofoil B coordinate of aerofoil profile (1) meets equation:
Y2=0.4258*x^4-1.064*x^3+0.6204*x^2+0.01808*x-2.298*10^ (-4) (II),
Wherein: 0≤x≤1, at 0≤x≤0.02, top airfoil A, lower aerofoil B seamlessly transit；
Described aerofoil profile (1) is at the different chord length (c) opened up on position of blade (2) and established angle (θ)
Meet following table:
Table 1
| Exhibition is to position (mm) | Chord length c (mm) | Established angle θ (°) |
| 0-50 | Blade root | 0 |
| 50 | 44 | 17.20 |
| 100 | 100 | 18.20 |
| 150 | 100 | 17.45 |
| 200 | 77 | 13.3157 |
| 250 | 56 | 10.3242 |
| 300 | 49 | 8.2272 |
| 350 | 45 | 6.6843 |
| 400 | 41 | 5.5049 |
| 450 | 37 | 4.5759 |
| 500 | 33 | 3.8259 |
| 550 | 29 | 3.2082 |
Beneficial effects of the present invention:
The present invention is with standard air generator blade and standard aerofoil profile object as a comparison.The wing of the present invention
Type is compared with standard aerofoil profile, and lift coefficient is relatively big, and lift-drag ratio is relatively big, and aeroperformance is the most excellent, by this
Aerofoil profile builds the blade obtained, and through verification experimental verification, efficiency improves 26.48% compared with rule blade.
The improvement of wind energy conversion system is realized with optimization established angle by the present invention by improving aerofoil profile, and the tradition not changing blade adds
Work technique, widely applicable.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of aerofoil profile of the present invention.
Fig. 2 is the front view of blade of the present invention.
Fig. 3 is the left view of blade of the present invention.
Fig. 4 is the top view of blade of the present invention.
Fig. 5 is the structural representation of blade of the present invention.
Fig. 6 is the A-A profile in Fig. 5.
Fig. 7 be aerofoil profile of the present invention with standard aerofoil profile Reynolds number be 100000, the angle of attack be liter when 0～20 °
Force coefficient correlation curve figure.
Fig. 8 be aerofoil profile of the present invention with standard aerofoil profile Reynolds number be 100000, the angle of attack be liter when 0～20 °
Curve chart is compared in resistance comparison.
Fig. 9 is blade of the present invention with rule blade when wind speed is 0～10.7m/s, the power that test obtains
Correlation curve figure.
In figure: 1-aerofoil profile, 2-blade, 3-blade root, 4-Curve guide impeller part, c-chord length, A-top airfoil,
B-lower aerofoil.
Detailed description of the invention
Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, for embodiments of the invention,
Blade 2 is obtained according to the chord length (c) in table 1 and established angle (θ) structure by aerofoil profile 1.In table 1, established angle (θ)
For the angle between chord length (c) and the Plane of rotation (xy face) of blade 2 of aerofoil profile 1.
Table 1
| Exhibition is to position (mm) | Chord length c (mm) | Established angle θ (°) |
| 0-50 | Blade root | 0 |
| 50 | 44 | 17.20 |
| 100 | 100 | 18.20 |
| 150 | 100 | 17.45 |
| 200 | 77 | 13.3157 |
| 250 | 56 | 10.3242 |
| 300 | 49 | 8.2272 |
| 350 | 45 | 6.6843 |
| 400 | 41 | 5.5049 |
| 450 | 37 | 4.5759 |
| 500 | 33 | 3.8259 |
| 550 | 29 | 3.2082 |
The top airfoil A coordinate of aerofoil profile 1 meets equation:
Y1=-0.6286*x^4+1.448*x^3-1.454*x^2+0.6346*x+1.274*10^ (-4) (I),
The lower aerofoil B coordinate of aerofoil profile 1 meets equation:
Y2=0.4258*x^4-1.064*x^3+0.6204*x^2+0.01808*x-2.298*10^ (-4) (II),
Wherein: 0≤x≤1, at 0≤x≤0.02, top airfoil A, lower aerofoil B seamlessly transit.
Aerofoil profile 1 lift coefficient is relatively big, and lift-drag ratio is relatively big, and aeroperformance is the most excellent.
It is 100000 with standard aerofoil profile at Reynolds number that Fig. 7 show aerofoil profile 1 of the present invention, and the angle of attack is 0～20 °
Time lift coefficient correlation curve figure.As seen from the figure, the lift coefficient of this kind of operating mode Airfoil 1 is higher than mark
Quasi-aerofoil profile, maximum lift coefficient is 1.7825 times of standard aerofoil profile.
It is 100000 with standard aerofoil profile at Reynolds number that Fig. 8 show aerofoil profile 1 of the present invention, and the angle of attack is 0～20 °
Time lift-drag ratio correlation curve figure.As seen from the figure, the lift-drag ratio of this kind of operating mode Airfoil 1 is higher than the standard wing
Type, maximum lift-drag ratio is 1.7726 times of standard aerofoil profile.
Fig. 9 show blade 2 of the present invention with rule blade when wind speed is 0～10.7m/s, and test obtains
Power contrast's curve chart.As seen from the figure, under this kind of operating mode, blade 2 is compared with rule blade, and efficiency is bright
Aobvious raising, average increase rate reaches 26.48%.
In sum, when Reynolds number is 100000, and the angle of attack is 0～20 °, the lift of aerofoil profile 1 of the present invention
Coefficient and lift-drag ratio are above standard aerofoil profile, and compared with rule blade, blade 2 efficiency of the present invention substantially carries
Height, the utilization to wind energy is the most abundant.
Claims (1)
1. a small-sized wind power generator blade, it is characterised in that: described blade (2) is by aerofoil profile (1)
Constituting, top airfoil (A) coordinate of described aerofoil profile (1) meets equation:
Y1=-0.6286*x^4+1.448*x^3-1.454*x^2+0.6346*x+1.274*10^ (-4) (I)；
Lower aerofoil (B) coordinate of described aerofoil profile (1) meets equation:
Y2=0.4258*x^4-1.064*x^3+0.6204*x^2+0.01808*x-2.298*10^ (-4) (II)；
Wherein: 0≤x≤1, at 0≤x≤0.02, top airfoil (A) and lower aerofoil (B) seamlessly transit；
Described aerofoil profile (1) is full in the different chord length (c) opened up on position of blade (2) and established angle (θ)
Foot table:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410439923.7A CN104214054B (en) | 2014-08-28 | 2014-08-28 | A kind of small-sized wind power generator blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410439923.7A CN104214054B (en) | 2014-08-28 | 2014-08-28 | A kind of small-sized wind power generator blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104214054A CN104214054A (en) | 2014-12-17 |
| CN104214054B true CN104214054B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410439923.7A Expired - Fee Related CN104214054B (en) | 2014-08-28 | 2014-08-28 | A kind of small-sized wind power generator blade |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278272A (en) * | 2011-09-02 | 2011-12-14 | 吉林大学 | Protrusive horizontal shaft wind turbine blade |
| CN102400847A (en) * | 2011-11-29 | 2012-04-04 | 吉林大学 | Wind-driven generator blade wing section |
| CN103883483A (en) * | 2014-04-17 | 2014-06-25 | 吉林大学 | 100 W wind turbine blade |
| CN204126820U (en) * | 2014-08-28 | 2015-01-28 | 吉林大学 | A kind of small-sized wind power generator blade |
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2014
- 2014-08-28 CN CN201410439923.7A patent/CN104214054B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278272A (en) * | 2011-09-02 | 2011-12-14 | 吉林大学 | Protrusive horizontal shaft wind turbine blade |
| CN102400847A (en) * | 2011-11-29 | 2012-04-04 | 吉林大学 | Wind-driven generator blade wing section |
| CN103883483A (en) * | 2014-04-17 | 2014-06-25 | 吉林大学 | 100 W wind turbine blade |
| CN204126820U (en) * | 2014-08-28 | 2015-01-28 | 吉林大学 | A kind of small-sized wind power generator blade |
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|---|---|
| CN104214054A (en) | 2014-12-17 |
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Granted publication date: 20160817 Termination date: 20170828 |