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A 10kw wind turbine blade

A technology of wind turbines and blades, which is applied to wind turbine components, wind turbines, engines, etc. It can solve the problems of low utilization rate of wind energy and high cost per kilowatt-hour of electricity, and achieve slow stall characteristics, reduce wind resistance, and enhance cohesion.

Inactive Publication Date: 2015-12-23
ZHONGYI GLASS FIBER REINFORCED PLASTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic wind turbine blades generally have the disadvantages of low wind energy utilization rate and high cost per unit of electricity. The maximum wind energy utilization coefficient of the three-blade wind wheel reaches 0.42, and the wind energy utilization rate is low. The power generation capacity of the machine is a common concern in the industry

Method used

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  • A 10kw wind turbine blade
  • A 10kw wind turbine blade
  • A 10kw wind turbine blade

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings. The blade that the present invention selects and is used for optimizing is Dutch DU93-W-210 airfoil, and its cross-sectional shape is as follows figure 1 Its aerodynamic coefficients are shown in Table 1. Among them, the design principle of DU93-W-210 airfoil is: the outer airfoil has high lift-to-drag ratio, high maximum lift, gentle stall characteristics, insensitivity to roughness and low noise.

[0034] Table 1 DU93-W-210 airfoil aerodynamic coefficient

[0035] α

Cl

CD

-180.0

0.0000

0.0101

-170.0

0.4397

0.0510

-160.0

0.8794

0.1688

-150.0

0.7457

0.3492

-140.0

0.6721

0.5705

-130.0

0.5892

0.8057

-120.0

0.4769

1.026...

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Abstract

The invention discloses a blade of a 10kW wind turbine generator. The wing section of the blade is a DU93-W-210 wing section; the relative thickness of the blade is 21%; the length L of the blade is 3.5m; after the blade is mounted, the radius (r) of a wind wheel corresponding to a blade tip is 3.9m; at least 10 cross-section points are arranged along the blade unfolding direction; the corresponding relation between a blade section chord length (c)at the position of the radius (r) of the wind wheel corresponding to the blade and a blade twisting angle by optimizing the blade with the wing section of DU93-W-210; the aerodynamic parameter of the optimized blade has great wind catching ability; the wind energy using ability of the blade is greatly improved by using the advantages of the DU93-W-210 wing section and the appearance of the optimized blade; the wind energy using coefficient can reach 0.46; and the power generation ability of the wind turbine generator is obviously improved.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, and more specifically, relates to a 10kW wind turbine blade. Background technique [0002] The blade is the most basic and critical part of a wind turbine. Its good design and reliable quality are directly related to the efficiency and service life of the wind turbine. The aerodynamic shape of the blade directly affects the efficiency of the wind turbine to absorb wind energy, namely It determines the efficiency of the fan and the amount of annual power generation, and is one of the key factors that determine the cost of electricity. The task of the aerodynamic shape design of the wind turbine blade is to use the optimal design method to obtain the change of the section chord length, relative thickness and twist angle of the wind turbine blade along the span direction according to the design conditions of the wind turbine, that is, the geometric shape of the blade. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D11/00
Inventor 马学斌李英吉
Owner ZHONGYI GLASS FIBER REINFORCED PLASTICS
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