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Root adjustable horizontal shaft wind-power blade

A technology for wind power blades and level adjustment, which is applied in wind power generation, wind power generator components, and wind power engines consistent with the wind direction, etc. It can solve the problems of large power adjustment, difficult processing, and heavy blade weight, so as to improve the power coefficient. , good aerodynamic performance, and the effect of reducing the weight of the blade

Inactive Publication Date: 2011-06-22
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages of the prior art, such as large blade weight, large adjustment power, complex structure, low strength, and difficult processing, so as to provide a root-adjustable horizontal axis wind turbine blade

Method used

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  • Root adjustable horizontal shaft wind-power blade
  • Root adjustable horizontal shaft wind-power blade
  • Root adjustable horizontal shaft wind-power blade

Examples

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Effect test

Embodiment Construction

[0028] The technical solutions provided by the present invention are further described below in conjunction with the examples.

[0029] like figure 1 , 2 As shown in , 3, the cross-section of the wind power blade perpendicular to the span direction is a typical airfoil of a wind turbine, wherein, the wind power blade divides the root part of the blade along the span direction into two parts: fixed and adjustable. The contact surface at part of the split crack along the span direction is a matching circular arc surface, and the contact surface at the split crack along the cross section perpendicular to the span direction is a plane, and the size ratio of the two parts can also be properly distributed. For example, it can be The increase in the area of ​​the adjustment part can increase the adjustment effect of the blades, but the adjustment power will be correspondingly increased. The invention is applicable to blade designs of horizontal axis wind turbines of various sizes a...

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Abstract

The invention relates to a root adjustable horizontal shaft wind-power blade. The transverse section of the wind-power blade vertical to the spanwise direction is of a typical airfoil shape of a wind turbine, wherein the wind-power blade divides the root and local part of the blade into a fixed part and an adjustable part respectively along the spanwise direction. A contract surface of the two parts along the split crack is a matched chamfered surface, a contact surface at the split crack of the two parts vertical to the spanwise transverse section is a plane, and an adjusting mechanism of theadjustable part is arranged in an external wheel hub. The root adjustable horizontal shaft wind-power blade has main advantages that: according to the wind field situation, the adjustable part can berotated so as to reach the aim of changing the camber and effective attack angle; the root adjustable horizontal shaft wind-power blade has strong adaptability to incoming flow and high pneumatic efficiency, obviously enhances the pneumatic performance of a root area, and effectively performs powder control adjustment; the brake is more simple and effective under the condition of strong wind andutmost limit; the adjustable part has smaller size and lighter weight; array adjustment needs low power, the control mechanism is simple and convenient, an internal mechanism of the blade is simple, the weight is effectively reduced and the strength is improved.

Description

technical field [0001] The invention relates to the field of general design methods for horizontal-axis wind turbine blades, in particular to a root-adjustable horizontal-axis wind turbine blade. Background technique [0002] Due to the increasing shortage of fossil energy (petroleum, coal, etc.) and the environmental pollution it brings, the development and utilization of clean and renewable energy has become the consensus of mankind, which has attracted increasing attention and attention from all over the world. Wind power is a clean renewable energy with the most commercial value at present. It was developed earlier in foreign countries and its technology is mature. The development of my country's wind power industry is relatively slow, but it has been listed as the focus of renewable energy development after 2005. support. At present, various kinds of wind power generators have been developed and produced at home and abroad. [0003] At present, most of the common wind ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D1/06F03D11/00F03D7/02
CPCY02E10/723Y02E10/721Y02E10/722Y02E10/72
Inventor 陈江杜刚魏大盛蒋向华王延荣申秀丽李晓东郑赟高军辉
Owner BEIHANG UNIV
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