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Wind machine blade and method for designing same

A wind turbine blade and design method technology, which is applied to wind turbines, wind turbines that are consistent with the wind direction, and mechanical equipment, etc., can solve the problems affecting the overall operation efficiency of wind turbines, increasing blade loads, and increasing blade costs. Fatigue resistance optimization, weight reduction, effect of reduced layup thickness

Active Publication Date: 2011-08-03
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Due to the above-mentioned structure of the horizontal axis wind turbine blades in the prior art, not only the weight of the blades is too heavy, the cost of the blades is increased, but also the load of the blades is increased, thereby affecting the overall operating efficiency of the wind turbine.

Method used

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  • Wind machine blade and method for designing same
  • Wind machine blade and method for designing same
  • Wind machine blade and method for designing same

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0034] In an exemplary embodiment of the present invention, the blade structure of the horizontal axis wind turbine includes a girder, a reinforcing rib and a skin covering the outside of the girder.

[0035] In this embodiment, holes are provided on the girder along the radial direction of the blade. image 3 It is a structural schematic diagram of a horizontal axis wind turbine blade girder according to an embodiment of the present invention. Such as image 3 As shown, the opening 21 may be a rectangular opening, and the distance from the rectangular opening 21 to the upper and lower edges of the girder 2 is greater than 1 / 5 of the overall width of the girder. There are less than 10 rectangular openings on the girder ...

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Abstract

The invention discloses a method for designing a wind machine blade and the wind machine blade which is designed according to the method. The blade comprises a crossbeam (2) and skin (1); and the crossbeam (2) comprises at least one opening (21). The method comprises the following steps of: determining a pneumatic appearance parameter of the blade and a structure parameter of the crossbeam by theconventional method for designing the blade; forming openings on the substance crossbeam by a topological optimization method; primarily determining the design position, number and size of ribs, the material of skin and initial design thickness by optimization calculation; and checking intensity, rigidity and fatigue of the primarily designed blade structure, adjusting and optimizing according toa checking result to ensure that the blade has high structure performance. The openings are formed on the crossbeam, and reinforcement ribs are formed between the crossbeam and the skin, so that the weight of the blade is reduced when the intensity and rigidity of the blade structure are guaranteed, the cost of the blade is reduced, and the loading of the blade can be reduced conveniently.

Description

technical field [0001] The invention relates to the technical field of wind power generation in the mechanical industry, in particular to a horizontal axis wind turbine blade and a design method thereof. Background technique [0002] As global warming becomes more serious, CO 2 The pressure to reduce emissions is increasing, while the supply of fossil energy is tight, and renewable clean energy is increasingly favored by major countries. Wind energy has the advantages of large reserves, wide distribution, clean and pollution-free, low overall cost and is declining, and is one of the very promising power generation methods. The strategic position of wind energy as an important part of future energy supply has been widely valued by countries all over the world. [0003] my country has abundant reserves of wind energy resources. According to preliminary estimates, the developable amount of wind energy resources at a height of 10 meters above the ground in my country is 253 mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06
CPCY02E10/721Y02E10/72
Inventor 石可重徐建中赵晓路
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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