CN201347836Y - Wind wheel vane for megawatt wind-power generation equipment - Google Patents
Wind wheel vane for megawatt wind-power generation equipment Download PDFInfo
- Publication number
- CN201347836Y CN201347836Y CNU2008202337522U CN200820233752U CN201347836Y CN 201347836 Y CN201347836 Y CN 201347836Y CN U2008202337522 U CNU2008202337522 U CN U2008202337522U CN 200820233752 U CN200820233752 U CN 200820233752U CN 201347836 Y CN201347836 Y CN 201347836Y
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- blade
- wind wheel
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- section
- vane
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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 utility model discloses a wind wheel vane, in particular to a wind wheel vane for megawatt wind-power generation equipment, which is characterized in that the wind wheel vane is in a whole pre-bending shape from a vane root (1) to a vane tip (7), the largest chord length of the wind wheel vane is 3.18m, and the whole length thereof is 40.25m, wherein the vane tip (7) is bent toward the windward direction, the upper bending deflection thereof is 2m, and the distance from the initial bending position to the inner side of the wind wheel vane tip (7) is 13.45m. The extension direction of the vane root (1) to the vane tip (7) is the wing extending direction of the wind wheel vane. As the vane tip is in a pre-bending shape, the distance between the vane tip and a tower frame is increased, and the material cost of the vane can be effectively reduced under meeting the same rigidity conditions, and the effective load of a unit is reduced. The wind wheel vane increases the wind catching ability in low wind speed area, increases the output power of wind-power units, is suitable for the actual wind characteristics of China, is easily formed, and is beneficial for popularization and application.
Description
Technical field
The utility model relates to a kind of wind wheel blade, specifically is the wind wheel blade that a kind of megawatt level wind power generation equipment is used.
Background technique
Energy crisis, environmental crisis causes the fast development of wind-powered electricity generation industry, and the huge market causes keen competition, so the lasting lifting of technology has just been arranged.Blade is as core component, and its designing technique also is one of wind-powered electricity generation unit core technology.Nowadays, in the world the trend of Blade Design by the cost minimization of the maximization degree of transferring to of foline power factor electricity.The variation of optimization aim must cause the blade profile designing technique that corresponding change also takes place, and promotes.What of the efficient of blower fan and annual electricity generating capacity are the quality of blade profile design directly determined, are one of crucial factors of the electric cost of decision degree.
The used blade profile of wind power plant is generally the prismatic blade that reverses at present, prismatic blade is when reaching rated wind speed, bending deflection towards upwind takes place in blade tip under aerodynamic effect, dwindled the distance between blade tip and the pylon, the rigidity of the straight wind wheel blade of this moment weakens, and wind wheel blade sweeping area reduces naturally, catches wind efficient and also decreases, especially under the state of low wind speed, blade to catch wind efficient lower.Straight-vaned wind wheel blade consumptive material not only when particularly in megawatt level wind power generation equipment, using, and efficient is low.
The model utility content
In order to solve above-mentioned defective of the prior art, the purpose of this utility model is to provide a kind of wind energy power of catching that improves, the pre-curved wind wheel blade that the megawatt level wind power generation equipment that generating efficiency is high is used.
To achieve these goals, the utility model adopts following technological scheme: the wind wheel blade that a kind of megawatt level wind power generation equipment is used, its characteristics are that this wind wheel blade is pre-bending by blade root to blade tip integral body, its chord length is 3.18m to the maximum, and entire length is 40.25m; Wherein, blade tip bends towards upwind, and its bending deflection is 2m, plays curved some place apart from the inside 13.45m in this blade tip place; Is the spanwise of described wind wheel blade by blade root to the bearing of trend of its blade tip.
The chord length of above-mentioned wind wheel blade is 0-3.18m, and chord length is the blade tip position that 0 place refers to this wind wheel blade.
To 6 wing cross sections are arranged between the blade root, wherein, blade root portion is cylindrical to above-mentioned wind wheel blade from blade tip, and its sectional shape is circular, and the length of this blade root accounts for 2.8% of this blade total length; By blade root to the sectional shape at blade total length 17% place is transition aerofoil profile shape, and its chord length is 3.08m, and relative thickness is 90%-45%, between this blade span direction and account between the 2.8%-16.9% of blade total length; The cross section of largest chord strong point is positioned at apart from blade root to described blade span direction and account for 16.9% place of blade total length; Is transition aerofoil profile shape by the cross section of largest chord strong point to the blade shape between the cross section at this blade span direction length overall 84% place, and its relative thickness is 40%25%, between described blade span direction and account between the 16.9%-84% of total length; Is NACA63 series aerofoil profile in described blade span direction and the cross section that accounts for 90% place of total length to the blade shape between the blade tip, and relative thickness is 21% to 18%; Along the blade span direction and account between the position of 16.9%-84% of total length, chord length is 1.36m apart from the curved point of rising of blade tip 13.45m cross section, and relative thickness is 23%, and the sectional shape at this place is a transition aerofoil profile shape.
The utility model has adopted technique scheme, and its beneficial effect is as follows: 1) because blade tip is curved in advance, increased the distance between blade tip and the pylon, can effectively reduce cost of material at the blade that satisfies under the same rigidity condition; 2) compare with the standard type blade, blade tip is bent towards upwind,, thereby can effectively consume diastrophic energy, reduce the unit useful load because its tip segment flexibility is bigger; 3) when rated wind speed, pre-bending blade tip takes place to become prismatic blade towards the bending deflection of wind direction down under aerodynamic effect, thereby increases wind wheel sweeping area, improve its wind energy power of catching, improved the output power of low wind speed leeward group of motors low wind speed zone.4) actual features of suitable Chinese wind regime is easy to moulding, and is of value to promotion and implementation.
Description of drawings
Fig. 1 is the overall structure schematic representation of the utility model blade
Fig. 2 is that Figure 1A-A is to cross-sectional view
Fig. 3 is the blade profile schematic representation apart from blade root 17% total length position
Fig. 4 is the schematic cross-section of the largest chord strong point of the utility model blade
Fig. 5 is curved some place schematic cross-section for blade rises
Fig. 6 is the blade profile schematic representation apart from blade root 84% total length position
Fig. 7 is the blade profile schematic representation apart from blade root 90% total length position
Embodiment
As shown in Figure 1 and Figure 2, the utility model wind wheel blade integral body is divided into blade root 1, blade tip 7 and blade stage casing, and is one-body molded through mold pressing; Its integral body is pre-bending, and length of blade is 40.25m; Wherein, blade tip 7 bends towards upwind, and the chord length of this wind wheel blade is 0-3.18m, and the vane thickness at maximum chord length 3.18m place is 1384mm, chord length be 0 o'clock be the blade tip place, its thickness is mm; Is the spanwise of this wind wheel blade by blade root to the bearing of trend of blade tip.
This wind wheel blade has 6 wing cross sections between 7 from blade root 1 to blade tip.
Wherein, blade root 1 is cylindrical, and its cross section is circular, and diameter is 1.89m, and the length of blade root 1 accounts for 2.8% of described wind wheel blade total length;
To adopting the transition aerofoil profile the maximum chord length, relative thickness from 90% to 45% is between the 2.8%-16.9% place of described wind wheel blade spanwise total length by blade root 1 the inner;
Blade shape between cross section 3 to the cross section 5 is the transition airfoil structure, and its relative thickness of airfoil from 40% to 25% is between described blade span direction total length 16.9%-84% place;
As Fig. 3-shown in Figure 6, shown the blade shape in each cross section respectively.
Fig. 3 is the structural representation in the cross section 2 between blade span direction 2.8% to 16.9%, and cross section 2 is between the blade root the inner and cross section 3 largest chord strong points in cross section 1, and its chord length is 3.08m, and thickness is 1265mm.
Fig. 4 is the sectional shape figure in cross section, maximum chord length 3.18m place 3, is positioned at total length 16% place of blade span direction, and the vane thickness of largest chord strong point is 1384mm.
Fig. 5 is the sectional shape that plays curved Dian Chu cross section 4 of blade pre-bending, and this curved some place is apart from the inside 13.45m of blade tip, and chord length is 1.36m, and relative thickness is 23%, is shaped as the transition aerofoil profile.
Fig. 6 is the shape that is positioned at the cross section, 84% place 5 of wind wheel blade spanwise total length, and its aerofoil profile chord length is 0.97m, and maximum ga(u)ge is 192mm.
Fig. 7 is the sectional view that is positioned at apart from the cross section 6 at blade root 90% place, and its chord length is 0.84m, and maximum ga(u)ge is 159mm, and relative thickness is 21% to 18%.
Above-mentioned relative thickness is meant the ratio of aerofoil profile maximum ga(u)ge and this aerofoil profile chord length.
This blade profile is fit to III class wind regime, has the efficient height, possesses high power, the advantage that unit load is little under the low wind speed.
Working principle of the present utility model is: the wind wheel blade that the megawatt level wind power generation equipment of employing the technical solution of the utility model moulding is used, during proper functioning, under the wind-force effect, pre-bight portion gradually down wind direction deform, during to rated wind speed, become prismatic blade, thereby increase wind wheel sweeping area, improve its wind energy power of catching, also improved the output power of low wind speed leeward group of motors simultaneously low wind speed zone.
Compare with traditional prismatic blade, wind wheel blade of the present utility model has increased blade tip and tower because its blade tip is Prebending type Distance between the frame has reduced material cost satisfying under the same rigidity condition; Simultaneously, compare with the standard type blade, Blade tip is bent towards upwind, because its tip segment flexibility is bigger, thereby can effectively consume the flexural deformation energy, fall Low unit payload.
Claims (3)
1, the wind wheel blade used of a kind of megawatt level wind power generation equipment, it is characterized in that: this wind wheel blade is pre-bending by blade root (1) to blade tip (7) integral body, and its chord length is 3.18m to the maximum, and entire length is 40.25m; Wherein, blade tip (7) bends towards upwind, and its bending deflection is 2m, plays curved some place and locates inside 13.45m apart from described wind wheel blade blade tip (7); Described blade root (1) is the spanwise of described wind wheel blade to the bearing of trend of blade tip (7).
2, wind wheel blade according to claim 1 is characterized in that: the chord length of described wind wheel blade is 0-3.18m.
3, wind wheel blade according to claim 1 and 2, it is characterized in that: described wind wheel blade has 6 wing cross sections from blade root (1) between the blade tip (7), and wherein, blade root (1) is cylindrical, its cross section is circular, and the length of blade root (1) accounts for 2.8% of described wind wheel blade total length; Cross section (2) is positioned between blade root (1) and cross section (3), and its chord length is 3.08m, and the aerofoil profile of this section is the transition aerofoil profile, and relative thickness is 90%-45%, between the 2.8%-16.9% of described wind wheel blade spanwise total length; Cross section (3) is the sectional shape of described chord length biggest place, and it is positioned at apart from 16.9% place of blade root to described wind wheel blade spanwise total length; Cross section (5) is positioned at apart from 84% place of blade root (1) to described wind wheel blade spanwise total length, blade shape between cross section (3) to cross section (5) is the transition airfoil structure, its relative thickness of airfoil is 40%-25%, between described blade span direction total length 16.9%-84% place; Cross section (4) has been curved some cross section, and it is positioned between described cross section (3) and described cross section (5), and this curved some place chord length is 1.36m, and relative thickness is 23%; Cross section (6) is positioned at apart from blade root (1) to described wind wheel blade spanwise total length 90% place, and cross section (6) to the blade shape between the blade tip (7) is a NACA63 series aerofoil profile, and relative thickness is 21% to 18%; The chord length of described blade tip (7) is 0, and its relative thickness is 18%-0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202337522U CN201347836Y (en) | 2008-12-22 | 2008-12-22 | Wind wheel vane for megawatt wind-power generation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202337522U CN201347836Y (en) | 2008-12-22 | 2008-12-22 | Wind wheel vane for megawatt wind-power generation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201347836Y true CN201347836Y (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202337522U Expired - Lifetime CN201347836Y (en) | 2008-12-22 | 2008-12-22 | Wind wheel vane for megawatt wind-power generation equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN201347836Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022282A (en) * | 2010-12-23 | 2011-04-20 | 何光宁 | Strong wind resistant wind generator |
| CN109899229A (en) * | 2019-03-27 | 2019-06-18 | 上海电力学院 | A kind of low wind speed high-performance pneumatic equipment bladess |
| CN110080938A (en) * | 2019-06-04 | 2019-08-02 | 三一重能有限公司 | A kind of wind electricity blade and Wind turbines |
| CN113685308A (en) * | 2021-09-23 | 2021-11-23 | 中国华能集团清洁能源技术研究院有限公司 | Front wind wheel blade and double-wind-wheel wind turbine generator set |
| CN113738570A (en) * | 2021-09-23 | 2021-12-03 | 中国华能集团清洁能源技术研究院有限公司 | Wind turbine generator with combined blades and manufacturing system thereof |
-
2008
- 2008-12-22 CN CNU2008202337522U patent/CN201347836Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022282A (en) * | 2010-12-23 | 2011-04-20 | 何光宁 | Strong wind resistant wind generator |
| CN102022282B (en) * | 2010-12-23 | 2012-08-29 | 何光宁 | Strong wind resistant wind generator |
| CN109899229A (en) * | 2019-03-27 | 2019-06-18 | 上海电力学院 | A kind of low wind speed high-performance pneumatic equipment bladess |
| CN109899229B (en) * | 2019-03-27 | 2024-06-28 | 上海电力大学 | Low wind speed high performance wind turbine blade |
| CN110080938A (en) * | 2019-06-04 | 2019-08-02 | 三一重能有限公司 | A kind of wind electricity blade and Wind turbines |
| CN113685308A (en) * | 2021-09-23 | 2021-11-23 | 中国华能集团清洁能源技术研究院有限公司 | Front wind wheel blade and double-wind-wheel wind turbine generator set |
| CN113738570A (en) * | 2021-09-23 | 2021-12-03 | 中国华能集团清洁能源技术研究院有限公司 | Wind turbine generator with combined blades and manufacturing system thereof |
| CN113685308B (en) * | 2021-09-23 | 2024-01-19 | 中国华能集团清洁能源技术研究院有限公司 | Front wind wheel blade and double wind wheel wind turbine generator set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SINOMATECH (FUNING) WIND POWER BLADE CO., LTD. Free format text: FORMER OWNER: SINOMATECH WIND POWER BLADE CO., LTD. Effective date: 20140626 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 102101 YANQING, BEIJING TO: 224400 YANCHENG, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140626 Address after: No. 23 road 224400 Funing GCL County of Jiangsu Province Economic Development Zone Patentee after: Sinoma science and Technology (Funing) wind power blade Co., Ltd. Address before: 261 box 102101, Yanqing County, Beijing, Beijing Patentee before: Sinomatech Wind Power Blade Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |
|
| CX01 | Expiry of patent term |