CN103883483A - 100 W wind turbine blade - Google Patents
100 W wind turbine blade Download PDFInfo
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- CN103883483A CN103883483A CN201410153388.9A CN201410153388A CN103883483A CN 103883483 A CN103883483 A CN 103883483A CN 201410153388 A CN201410153388 A CN 201410153388A CN 103883483 A CN103883483 A CN 103883483A
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- blade
- sea
- gull wing
- gull
- aerofoil profile
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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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- 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 100 W wind turbine blade. The blade is in a sea gull wing shape and is designed based on the place, 50% away from the wing root, of the semi-span portion of a sea gull wing. The maximum thickness (t) of the blade in the sea gull wing shape is 20.63% of the chord length (c), and the maximum camber (f) of the blade in the sea gull wing shape is 45.06% of the chord length (c). When the chord length (c) is per unit length 1, the maximum thickness (t) of the blade in the sea gull wing shape is 0.1079, and the maximum camber (f) of the blade in the sea gull wing shape is 0.1094. The blade in the sea gull wing shape is obtained on the basis of the sea gull wing according to the design established angle. The velocity difference and pressure difference between the upper surface and the lower surface of the blade in the sea gull wing are large, and therefore larger lift force is obtained. When Reynolds number is 100000, and the angle of attack ranges from 0 to 20 degrees, the lift coefficient and the lift-drag ratio of the blade in the sea gull wing shape are larger than those of a blade in a standard wing shape, the maximum lift coefficient is improved by 1.196 times, and the maximum lift-drag ratio is improved by 34.10%. A test result shows that when the wind speed ranges from 0 to 10.7 m/s, compared with the standard blade, the efficiency of the blade in the sea gull wing shape is obviously improved, and the average improvement rate reaches 25.77%.
Description
Technical field
The present invention relates to a kind of 100W blade of wind-driven generator.
Technical background
Wind-power electricity generation is the emphasis of world new energy development, and small wind turbine market potential is huge.
At present, the operational efficiency of wind-driven generator is generally in 35% left and right, under the perfect condition calculating in nineteen twenty-six, compared with the limiting efficiency 59.3% of wind wheel, also has very large room for promotion with Bates according to aerodynamic principle.Blade of wind-driven generator is the core component that catches wind energy, is directly determining the transformation efficiency of wind energy.And form the aerofoil profile of vane aerodynamic profile, and directly determining the performance of blade, be the key of raising blade efficiency.Therefore, the aerofoil profile of acquisition excellent performance is to improve the key of wind power generator efficiency.
Be subject to the inspiration of numerous bionical products in recent years, can use for reference the biological nature of occurring in nature improves wind energy conversion system, consider that Bird Flight is the most similar to the operating mode of wind energy conversion system operation, the sea-gull wing aerofoil profile that invention adopts reverse-engineering to obtain, blade of wind-driven generator is optimized, through contrasting with standard 100W blade of wind-driven generator, learn that blade of the present invention can effectively improve wind energy conversion system efficiency.
Summary of the invention
The object of this invention is to provide a kind of 100W blade of wind-driven generator, the present invention is directed to the phenomenon that existing small wind engine efficiency has much room for improvement, improve blade of wind-driven generator by the mode that adopts sea-gull aerofoil profile, improve the wind energy utilization of wind-driven generator.
Blade of the present invention adopts sea-gull aerofoil profile, take from sea-gull wing semispan, apart from wing root 50% place, the maximum ga(u)ge (t) of sea-gull aerofoil profile is positioned at 20.63% of chord length (c), the maximum camber (f) of sea-gull aerofoil profile is positioned at 45.06% of chord length (c), in the time that chord length (c) is unit length 1, the maximum ga(u)ge (t) of sea-gull aerofoil profile is 0.1079, and the maximum camber (f) of sea-gull aerofoil profile is 0.1094.
Described sea-gull aerofoil profile is obtained by reverse-engineering, and the established angle that described blade is required according to table 2 by sea-gull aerofoil profile builds and obtains.
Beneficial effect of the present invention:
The present invention is with standard 100W blade of wind-driven generator object as a comparison.The upper and lower surface velocity of described sea-gull aerofoil profile is poor large, and pressure reduction is large, thereby has larger lift.When reynolds' number is 100000, when the angle of attack is 0～20 °, the lift coefficient of sea-gull aerofoil profile and ratio of lift coefficient to drag coefficient are all higher than standard aerofoil profile, and maximum lift coefficient improves 1.196 times, and maximum lift-drag ratio improves 34.10%.Test shows, in the time that wind speed is 0～10.7m/s, imitates sea-gull airfoil fan compared with rule blade, and efficiency obviously improves, and average increase rate reaches 25.77%.The present invention, by improving aerofoil profile, improves Blade Properties, does not change traditional blades processing technology, and applicability is wide.Wind tunnel test shows, imitates sea-gull aerofoil profile blade efficiency apparently higher than rule blade.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of sea-gull aerofoil profile.
Fig. 2 is plan view of the present invention.
Fig. 3 is left view of the present invention.
Fig. 4 is plan view of the present invention.
Fig. 5 is structural representation of the present invention.
Fig. 6 is the A-A sectional drawing in Fig. 5.
Fig. 7 is that sea-gull aerofoil profile and standard aerofoil profile are 100000 at reynolds' number, the lift coefficient correlation curve figure when angle of attack is 0～20 °.
Fig. 8 is that sea-gull aerofoil profile and standard aerofoil profile are 100000 at reynolds' number, the ratio of lift coefficient to drag coefficient correlation curve figure when angle of attack is 0～20 °.
Fig. 9 be the present invention's imitative sea-gull airfoil fan with rule blade in the time that wind speed is 0～10.7m/s, test the power correlation curve figure obtaining.
In figure: 1-sea-gull aerofoil profile, 2-imitates sea-gull airfoil fan, 3-blade root, 4-improvement part, t-maximum ga(u)ge, f-maximum camber, c-chord length, d-maximum camber line, E-top airfoil, F-lower aerofoil, the abscissa value of xt-maximum ga(u)ge position in aerofoil profile, the abscissa value of xf-maximum camber position in aerofoil profile.
Embodiment
Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, blade of the present invention adopts sea-gull aerofoil profile 1, take from sea-gull wing semispan, apart from wing root 50% place, the maximum ga(u)ge (t) of sea-gull aerofoil profile 1 is positioned at 20.63% of chord length (c), the maximum camber (f) of sea-gull aerofoil profile 1 is positioned at 45.06% of chord length (c), in the time that chord length (c) is unit length 1, the maximum ga(u)ge (t) of sea-gull aerofoil profile 1 is 0.1079, and the maximum camber (f) of sea-gull aerofoil profile 1 is 0.1094.The root of imitative sea-gull airfoil fan 2 has blade root 3, and imitative sea-gull airfoil fan 2 has improvement part 4.Sea-gull aerofoil profile 1 has increased the current difference of aerofoil profile upper and lower surface, and pressure reduction is increased, and lift increases.Described sea-gull aerofoil profile 1 is obtained by reverse-engineering, described imitative sea-gull airfoil fan 2, and the parameter being required according to table 2 by sea-gull aerofoil profile 1 builds and obtains.In table 2, established angle (θ) is the angle between the chord length (c) of sea-gull aerofoil profile 1 and the plane of rotation (xy face) of imitative sea-gull airfoil fan 2.
The corresponding coordinate figure of the upper and lower aerofoil of sea-gull aerofoil profile meets table 1:
Table 1
While being applied to 100W wind-driven generator, sea-gull aerofoil profile 1 meets table 2 in the different exhibitions of imitative sea-gull airfoil fan 2 to chord length (c) and the established angle (θ) of position:
Table 2
| Exhibition is to position (mm) | Chord length c(mm) | Established angle θ (°) |
| 0-50 | |
0 |
| 50 | 44 | 17.20 |
| 100 | 100 | 18.20 |
| 150 | 100 | 17.45 |
| 200 | 77 | 12.9157 |
| 250 | 56 | 9.9242 |
| 300 | 49 | 7.8272 |
| 350 | 45 | 6.2843 |
| 400 | 41 | 5.1049 |
| 450 | 37 | 4.1759 |
| 500 | 33 | 3.4259 |
| 550 | 29 | 2.8082 |
Figure 7 shows that sea-gull aerofoil profile 1 and standard aerofoil profile are 100000 at reynolds' number, the lift coefficient correlation curve figure when angle of attack is 0～20 °.As seen from the figure, under this kind of operating mode, sea-gull aerofoil profile 1 lift coefficient is higher than standard aerofoil profile, and maximum lift coefficient improves 1.196 times.
Figure 8 shows that sea-gull aerofoil profile 1 and standard aerofoil profile are 100000 at reynolds' number, the ratio of lift coefficient to drag coefficient correlation curve figure when angle of attack is 0～20 °.As seen from the figure, under this kind of operating mode, the ratio of lift coefficient to drag coefficient of sea-gull aerofoil profile 1 is higher than standard aerofoil profile, and maximum lift-drag ratio improves 34.10%.
The imitative sea-gull airfoil fan 2 that Figure 9 shows that the present invention with rule blade in the time that wind speed is 0～10.7m/s, the power correlation curve figure that test obtains.As seen from the figure, under this kind of operating mode, imitative sea-gull airfoil fan 2 is compared with rule blade, and efficiency obviously improves, and average increase rate reaches 25.77%.
In sum, when reynolds' number is 100000, when the angle of attack is 0～20 °, the lift coefficient of sea-gull aerofoil profile 1 and ratio of lift coefficient to drag coefficient are all higher than standard aerofoil profile, and compared with rule blade, the present invention's imitative sea-gull airfoil fan 2 efficiency obviously improve, more abundant to the utilization of wind energy.
Claims (1)
1. a 100W blade of wind-driven generator, it is characterized in that: its blade adopts sea-gull aerofoil profile (1), take from sea-gull wing semispan, apart from wing root 50% place, the maximum ga(u)ge (t) of sea-gull aerofoil profile (1) is positioned at 20.63% of chord length (c), the maximum camber (f) of sea-gull aerofoil profile (1) is positioned at 45.06% of chord length (c), in the time that chord length (c) is unit length 1, the maximum ga(u)ge (t) of sea-gull aerofoil profile (1) is 0.1079, the maximum camber (f) of sea-gull aerofoil profile (1) is 0.1094, sea-gull aerofoil profile (1) meets following table in the different exhibitions of imitative sea-gull airfoil fan (2) to locational chord length (c) and established angle (θ):
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153388.9A CN103883483B (en) | 2014-04-17 | 2014-04-17 | A kind of 100W blade of wind-driven generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153388.9A CN103883483B (en) | 2014-04-17 | 2014-04-17 | A kind of 100W blade of wind-driven generator |
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| Publication Number | Publication Date |
|---|---|
| CN103883483A true CN103883483A (en) | 2014-06-25 |
| CN103883483B CN103883483B (en) | 2016-04-06 |
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| CN201410153388.9A Expired - Fee Related CN103883483B (en) | 2014-04-17 | 2014-04-17 | A kind of 100W blade of wind-driven generator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214054A (en) * | 2014-08-28 | 2014-12-17 | 吉林大学 | Small-sized wind power generator blade |
| CN104354850A (en) * | 2014-10-30 | 2015-02-18 | 中国人民解放军空军航空大学 | Airfoil profile of airfoil of high-altitude long-endurance fixed-wing aircraft |
| CN104405596A (en) * | 2014-12-12 | 2015-03-11 | 华北电力大学 | Wind turbine generator system low-wind-speed airfoil section family |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004084522A (en) * | 2002-08-26 | 2004-03-18 | Mitsubishi Heavy Ind Ltd | Blade and wind power generator with it |
| CN2876367Y (en) * | 2005-11-09 | 2007-03-07 | 申振华 | Large deflection wind force machine wing shape |
| WO2010046000A2 (en) * | 2008-10-23 | 2010-04-29 | Repower Systems Ag | Profile of a rotor blade and rotor blade of a wind power plant |
| CN101813070A (en) * | 2010-04-13 | 2010-08-25 | 南京航空航天大学 | Vane airfoil profile of low power wind driven generator |
| CN102400847A (en) * | 2011-11-29 | 2012-04-04 | 吉林大学 | Wind-driven generator blade wing section |
| CN203770019U (en) * | 2014-04-17 | 2014-08-13 | 吉林大学 | 100-W wind turbine blade |
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2014
- 2014-04-17 CN CN201410153388.9A patent/CN103883483B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004084522A (en) * | 2002-08-26 | 2004-03-18 | Mitsubishi Heavy Ind Ltd | Blade and wind power generator with it |
| CN2876367Y (en) * | 2005-11-09 | 2007-03-07 | 申振华 | Large deflection wind force machine wing shape |
| WO2010046000A2 (en) * | 2008-10-23 | 2010-04-29 | Repower Systems Ag | Profile of a rotor blade and rotor blade of a wind power plant |
| CN101813070A (en) * | 2010-04-13 | 2010-08-25 | 南京航空航天大学 | Vane airfoil profile of low power wind driven generator |
| CN102400847A (en) * | 2011-11-29 | 2012-04-04 | 吉林大学 | Wind-driven generator blade wing section |
| CN203770019U (en) * | 2014-04-17 | 2014-08-13 | 吉林大学 | 100-W wind turbine blade |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214054A (en) * | 2014-08-28 | 2014-12-17 | 吉林大学 | Small-sized wind power generator blade |
| CN104214054B (en) * | 2014-08-28 | 2016-08-17 | 吉林大学 | A kind of small-sized wind power generator blade |
| CN104354850A (en) * | 2014-10-30 | 2015-02-18 | 中国人民解放军空军航空大学 | Airfoil profile of airfoil of high-altitude long-endurance fixed-wing aircraft |
| CN104405596A (en) * | 2014-12-12 | 2015-03-11 | 华北电力大学 | Wind turbine generator system low-wind-speed airfoil section family |
| CN104405596B (en) * | 2014-12-12 | 2017-02-22 | 华北电力大学 | Wind turbine generator system low-wind-speed airfoil section family |
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|---|---|
| CN103883483B (en) | 2016-04-06 |
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Granted publication date: 20160406 Termination date: 20170417 |