CN101059119B - Wind rotor blade of mw-grade wind driven generator - Google Patents
Wind rotor blade of mw-grade wind driven generator Download PDFInfo
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- CN101059119B CN101059119B CN200710023456XA CN200710023456A CN101059119B CN 101059119 B CN101059119 B CN 101059119B CN 200710023456X A CN200710023456X A CN 200710023456XA CN 200710023456 A CN200710023456 A CN 200710023456A CN 101059119 B CN101059119 B CN 101059119B
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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 relates to megawatt-degree wind power generation equipment, in particular a windwheel blade of megawatt-degree wind power generation equipment. The area near flange of blade root is transitional aerofoil form which relative thickness is between 90. 6% and 44. 3%, and between5. 33% and 16% of axial direction of blade; the Dutch DU series wind mill aerofoil used in blade root and positioning between 17. 65 % and 24. 88% of axial direction of blade has the relative thickness between 40% and 30%; and the Dutch DU series wind mill aerofoil used in blade centre and positioning between36. 75% and 55. 33% of axial direction of blade has the relative thickness between 25% and 21%; the blade tip of blade is the USA aerial NACA6 series lamellar flow aerofoil form and its relative thickness is 18%. The blade in the invention has wider use range than the prior windwheel blade, it applies to Class II and Class III wind area, it has the advantages of high windwheel power and larger windwheel power under equal wind speed and so on.
Description
Technical field
The present invention relates to technical field of wind power generating equipment, especially a kind of wind wheel blade of megawatt level wind power generation equipment.
Background technique
Wind energy conversion system provides a kind of abundant, cleaning and reproducible desirable alternative energy source for people.Wind-powered electricity generation factory can not only reduce the pollution of other traditional energies to empty G﹠W, can reduce our dependence to non-renewable energy resources simultaneously.Wind wheel blade is as the critical component of wind-power generating system, and its size is from 34 meters more than 50 meters of going so far as 2005 of 5 meters to 2000 of the seventies.Wind wheel blade is described by following parameters: corresponding to aerofoil profile chord length, camber curvature and position, aerofoil profile maximum ga(u)ge, maximum ga(u)ge position, aerofoil profile torsion angle and reference point (1/4th strings point) position of leaf cross-section.In addition, the coordinate of leading-edge radius and upper and lower wing profile also can be used to describe the cross section of blade.
Under any circumstance, the aerodynamic characteristic of the wind wheel blade profile of a wind-power generating system all is most important.The optimization of wind wheel blade can be considered from the following aspects.The wind wheel blade running of not only should undisturbedly working, also should have maximum power performance, can when hanging down wind speed, start the rotation of wind-power generating system, and be issued to rated speed, promptly reach for the first time the rotating speed of wind-power generating system rated power in minimum as far as possible wind-force intensity.When wind speed continue to increase, general way was to regulate the wind wheel blade of wind-power generating system by becoming slurry, makes it when keeping rated power, the wind-exposuring area that reduces wind wheel blade with protection whole wind force generating system with and parts be not subjected to mechanical failure.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of wind wheel blade is provided, and it is compared with the wind wheel blade up to now has better power performance and efficient.
The technical solution adopted for the present invention to solve the technical problems is: a kind of wind wheel blade of megawatt level wind power generation equipment, and the axial of blade is starting point is followed successively by leaf root part from blade to blade tip, intermediate portion and tip segment with the blade root; Leaf root part, between the root of blade root to 36.75% axial place; Intermediate portion is between 36.75% to 77.33% axial place; Tip segment, between axial 77.33% to the tip of blade tip; The adpting flange, the cross section that are positioned at the root of blade root and to 2.67% axial place are blade and wind wheel wheel hub are ring; The transition aerofoil profile is adopted in the zone of the close flange of leaf root part, its relative thickness between 90.6% and 44.3%, between blade axial 5.33% and 16% between; Leaf root part between 17.65% and 24.88%, adopt the DU series wind mill airfoil of Holland at sharf, its relative thickness is between 40% and 30%; The blade intermediate portion axial 36.75% and 55.33% between to adopt the DU series wind mill airfoil of Holland, its relative thickness be 25% at axial 36.75% place, be 21% at axial 55.33% place; The tip segment of blade is a US Airways NACA6 series laminar flow airfoil, and its relative thickness is 18%.
Further specifically: the EU70_906 aerofoil profile that axial 5.33% place of described leaf root part is a relative thickness 90.6%, the EU70_770 aerofoil profile that axial 8% place is a relative thickness 77%, the EU70_637 aerofoil profile that axial 10.67% place is a relative thickness 63.7%, the EU70_527 aerofoil profile that axial 13.33% place is a relative thickness 52.7%, the EU70_443 aerofoil profile that axial 16% place is a relative thickness 44.3%, axial 17.65% place is the Dutch DU400EU wind mill airfoil of relative thickness 40%, axial 20.11% place is the Dutch DU350EU wind mill airfoil of relative thickness 35%, axial 24.88% place is the Dutch DU300EU wind mill airfoil of relative thickness 30%.
Further specifically: the DU98_W_210 aerofoil profile that the DU91_W2_250 aerofoil profile that axial 36.75% place of the intermediate portion of described blade is a relative thickness 25%, axial 55.33% place are relative thickness 21%.Further specifically: the tip segment of described blade is American NACA _ 64_618 laminar flow airfoil.
The invention has the beneficial effects as follows that the wind wheel blade of megawatt level wind power generation equipment of the present invention compares with the wind wheel blade up to now that to have using scope wide, is applicable to II class and III class wind district, wind wheel efficient height, advantages such as wind wheel power is big under the equal wind speed.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the plan view of wind wheel blade.
Fig. 2 is that sharf is to the cross section EU70_906 of 5.33% radius aerofoil profile enlarged view.
Fig. 3 is that sharf is to the cross section EU70_770 of 8% radius aerofoil profile enlarged view.
Fig. 4 is that sharf is to the cross section EU70_637 of 10.67% radius aerofoil profile enlarged view.
Fig. 5 is that sharf is to the cross section EU70_527 of 13.33% radius aerofoil profile enlarged view.
Fig. 6 is that sharf is to the cross section EU70_443 of 16% radius aerofoil profile enlarged view.
Fig. 7 is that sharf is to the cross section DU400EU of 17.65% radius aerofoil profile enlarged view.
Fig. 8 is that sharf is to the cross section DU350EU of 20.11% radius aerofoil profile enlarged view.
Fig. 9 is that sharf is to the cross section DU300EU of 24.88% radius aerofoil profile enlarged view.
Figure 10 is that sharf is to the cross section DU91_W2_250 of 36.75% radius aerofoil profile enlarged view.
Figure 11 is that sharf is to the cross section DU98_W_210 of 55.33% radius aerofoil profile enlarged view.
Figure 12 is that sharf is to the cross section NACA_64_618 of 77.33% radius aerofoil profile enlarged view.
Embodiment
Accompanying drawing 1 is for reflecting the plan view of the main shape of blade, and the axial of blade is starting point is followed successively by leaf root part 1 from blade to blade tip, intermediate portion 2 and tip segment 3 with the blade root; Leaf root part 1, between the root of blade root to 36.75% axial place; Intermediate portion 2 is between 36.75% to 77.33% axial place; Tip segment 3, between axial 77.33% to the tip of blade tip; The adpting flange, the cross section that are positioned at the root of blade root and to 2.67% axial place are blade and wind wheel wheel hub are ring; The transition aerofoil profile is adopted in the zone of the close flange of leaf root part 1, its relative thickness between 90.6% and 44.3%, between blade axial 5.33% and 16% between; Leaf root part 1 between 17.65% and 24.88%, adopt the DU series wind mill airfoil of Holland at sharf, its relative thickness is between 40% and 30%; Blade intermediate portion 2 axial 36.75% and 55.33% between adopt the DU series wind mill airfoil of Holland, its relative thickness is 25% and 21%; The tip segment 3 of blade is a US Airways NACA6 series laminar flow airfoil, and its relative thickness is 18%.
Accompanying drawing 2 to accompanying drawing 12 is the aerofoil profile of blade from the axial cross section, 11 place of root, the EU70_906 aerofoil profile that axial 5.33% place of leaf root part 1 is a relative thickness 90.6%, the EU70_770 aerofoil profile that axial 8% place is a relative thickness 77%, the EU70_637 aerofoil profile that axial 10.67% place is a relative thickness 63.7%, the EU70_527 aerofoil profile that axial 13.33% place is a relative thickness 52.7%, the EU70_443 aerofoil profile that axial 16% place is a relative thickness 44.3%, axial 17.65% place is the Dutch DU400EU wind mill airfoil of relative thickness 40%, axial 20.11% place is the Dutch DU350EU wind mill airfoil of relative thickness 35%, axial 24.88% place is the Dutch DU300EU wind mill airfoil of relative thickness 30%; The DU91_W2_250 aerofoil profile that intermediate portion 2 axial 36.75% places of blade are relative thickness 25%, the DU98_W_210 aerofoil profile that axial 55.33% place is a relative thickness 21%; The tip segment 3 of blade is American NACA _ 64_618 laminar flow airfoil.Wherein the NACA_64_618 aerofoil profile is by National Advisory Committee for Aeronautics (being abbreviated as NACA, now NASA) research and development, wherein first digit 6 expressions 6 series; When second digit 4 expression was done symmetrical aerofoil profile use at zero angle of attack when it, the minimal pressure strong point was at 0.4 chord length place (the 4th, chord length very several); Following first digit after end setting-out is 10 times of design lift coefficient, design load C
1=0.6; Last two digits is represented thickness, is the percentage of chord length.Wherein He Lan wind energy conversion system special airfoil DU91_W2_250 and DU98_W_210 are Delft ,Holland technology university (being abbreviated as DUT) exploitations, by European Union under JOULE plan framework, Dutch energy and environment mechanisms (NOVEM) and different European blade manufacturers subsidies, wherein DU represents especially big of Dai Fu; Back to back two numerals are the last two digits in the year of this aerofoil profile of design; On behalf of wind energy, W use, and it is 25% design that there is an above relative thickness expression of 2 in the DU91 situation behind the W this year; Three last bit digital represent that maximum ga(u)ge is ten times of percentage of chord length.
All the other cross sections except that the cross section, 11 place that provides are decided by adjacent two given section transitions.
This wind wheel blade obtains in the local relative thickness linear interpolation of the blade coordinate that is positioned at the defined blade section left side and the right by adjacent aerofoil profile.The geometric shape of this wind wheel blade determines that by the position of the local chord length of the aerofoil profile of leaf cross-section, torsion angle and reference point (1/4th chord lengths point) continuous equation is followed in their distribution.
Wind wheel blade is the crux parts of wind power plant, also there is a certain distance in China compares the prosperity of wind-powered electricity generation cause aspect wind-power electricity generation country, and the present invention is the wind wheel blade that definite a kind of axial positions respectively has certain sectional shape on the basis of the existing blade technology of the American-European developed country of research.
Claims (4)
1. the wind wheel blade of a megawatt level wind power generation equipment is characterized in that: blade be starting point is followed successively by leaf root part from blade to blade tip, intermediate portion and tip segment axially with the blade root; Leaf root part, between the root of blade root to 36.75% axial place; Intermediate portion is between 36.75% to 77.33% axial place; Tip segment, between axial 77.33% to the tip of blade tip; The adpting flange, the cross section that are positioned at the root of blade root and to 2.67% axial place are blade and wind wheel wheel hub are ring; The transition aerofoil profile is adopted in the zone of the close flange of leaf root part, its relative thickness between 90.6% and 44.3%, between blade axial 5.33% and 16% between; Leaf root part between 17.65% and 24.88%, adopt the DU series wind mill airfoil of Holland at sharf, its relative thickness is between 40% and 30%; The blade intermediate portion axial 36.75% and 55.33% between to adopt the DU series wind mill airfoil of Holland, its relative thickness be 25% at axial 36.75% place, be 21% at axial 55.33% place; The tip segment of blade is a US Airways NACA6 series laminar flow airfoil, and its relative thickness is 18%.
2. the wind wheel blade of megawatt level wind power generation equipment according to claim 1 is characterized in that: the EU70_906 aerofoil profile that axial 5.33% place of described leaf root part is a relative thickness 90.6%, the EU70_770 aerofoil profile that axial 8% place is a relative thickness 77%, the EU70_637 aerofoil profile that axial 10.67% place is a relative thickness 63.7%, the EU70_527 aerofoil profile that axial 13.33% place is a relative thickness 52.7%, the EU70_443 aerofoil profile that axial 16% place is a relative thickness 44.3%, axial 17.65% place is the Dutch DU400EU wind mill airfoil of relative thickness 40%, axial 20.11% place is the Dutch DU350EU wind mill airfoil of relative thickness 35%, axial 24.88% place is the Dutch DU300EU wind mill airfoil of relative thickness 30%.
3. the wind wheel blade of megawatt level wind power generation equipment according to claim 1 is characterized in that: the DU98_W_210 aerofoil profile that the DU91_W2_250 aerofoil profile that axial 36.75% place of the intermediate portion of described blade is a relative thickness 25%, axial 55.33% place are relative thickness 21%.
4. the wind wheel blade of megawatt level wind power generation equipment according to claim 1 is characterized in that: the tip segment of described blade is American NACA _ 64_618 laminar flow airfoil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710023456XA CN101059119B (en) | 2007-06-05 | 2007-06-05 | Wind rotor blade of mw-grade wind driven generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710023456XA CN101059119B (en) | 2007-06-05 | 2007-06-05 | Wind rotor blade of mw-grade wind driven generator |
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| CN101059119A CN101059119A (en) | 2007-10-24 |
| CN101059119B true CN101059119B (en) | 2010-08-04 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555872A (en) * | 2009-02-20 | 2009-10-14 | 宜兴市华泰国际集团工业有限公司 | Blade of MW class wind turbine |
| CN102003332B (en) * | 2009-09-02 | 2012-08-22 | 中国科学院工程热物理研究所 | Blade airfoil family of wind turbine |
| US9611833B2 (en) * | 2010-07-16 | 2017-04-04 | Lm Glasfiber A/S | Wind turbine blade with narrow shoulder and relatively thick airfoil profiles |
| DE102012206109C5 (en) * | 2012-04-13 | 2022-06-09 | Wobben Properties Gmbh | Rotor blade of a wind turbine |
| CN102817794B (en) * | 2012-08-24 | 2014-07-23 | 中国人民解放军国防科学技术大学 | Lengthenable large composite material wind power generation blade |
| CN105781904B (en) * | 2016-03-22 | 2017-01-18 | 西北工业大学 | 30% thickness aerofoil suitable for megawatt-grade wind turbine blade |
| DE102017121432A1 (en) | 2017-01-18 | 2018-07-19 | ECO Holding 1 GmbH | Hydraulic module for controlling a hydraulic fluid flow of a connecting rod for a variable compression internal combustion engine and connecting rods |
| DE102017124861A1 (en) | 2017-10-24 | 2019-04-25 | Wobben Properties Gmbh | Rotor blade of a wind turbine and method for its design |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201050442Y (en) * | 2007-06-05 | 2008-04-23 | 江苏新誉风力发电设备有限公司 | Megawatt grade wind mill vane |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201050442Y (en) * | 2007-06-05 | 2008-04-23 | 江苏新誉风力发电设备有限公司 | Megawatt grade wind mill vane |
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| CN101059119A (en) | 2007-10-24 |
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Owner name: JIANGSU XINYU HEAVY MECHANISM TECHNOLOGY CO., LTD. Free format text: FORMER NAME: JIANGSU XINYU WIND POWER GENERATION EQUIPMENT CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 213164 Jiangsu city of Changzhou province were Wujin high tech Industrial Development Zone, Road No. 68 Co-patentee after: New United Group Co., Ltd. Patentee after: Jiangsu New United Heavy Industry Technology Co., Ltd. Address before: 213011, 18, Qian Jia Industrial Park, remote view Town, Wujin District, Jiangsu, Changzhou Co-patentee before: Changzhou Track-Vehicle Traction Drive Engineering Technology Research Center Patentee before: Jiangsu Xinyu Wind Power Generation Equipment Co., Ltd. |