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Wind power blade made of carbon-fiber and glass-fiber mixed materials

A technology for wind power blades and glass fiber fabrics, which is applied in wind power generation, wind turbine components, wind turbines, etc., can solve the problems of expensive carbon fiber and uneconomical cost, and achieve the effect of improving fatigue resistance.

Inactive Publication Date: 2013-12-11
CHANGCHUN LEILI MACHINERY MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since carbon fiber is more expensive than glass fiber, it is not cost-effective to use 100% carbon fiber to make blades

Method used

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  • Wind power blade made of carbon-fiber and glass-fiber mixed materials
  • Wind power blade made of carbon-fiber and glass-fiber mixed materials
  • Wind power blade made of carbon-fiber and glass-fiber mixed materials

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] As shown in Figure 2, the structure of the wind power blade of the present invention is that the wind power blade is composed of three layers of materials, the first layer is a glass fiber fabric layer, the second layer is a carbon fiber layer, and the third layer is a glass fiber fabric layer. One layer of glass fiber fabric forms an angle of 45° with the third layer of glass fiber fabric, and the second layer of carbon fiber is sandwiched between the first layer of glass fiber fabric and the third layer of glass fiber fabric.

[0034] The first layer of glass fiber fabric layer 150g, the second layer of carbon fiber layer 500g, the third layer of glass fiber fabric layer 150g.

[0035]The composite material structure of wind power blades is an iterative process of selecting different materials and synthesizing various designs, in which the lami...

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Abstract

The invention discloses a wind power blade. The wind power blade is formed by three layers of materials. The first layer is a glass fiber fabric layer. The second layer is a carbon fiber layer. The third layer is a glass fiber fabric layer. A + / -45-degree angle is formed by the glass fiber fabric layer in the first layer and the glass fiber fabric layer in the third layer, and the carbon fiber layer in the second layer is clamped between the glass fiber fabric layer in the first layer and the glass fiber fabric layer in the third layer. Carbon fibers are used, therefore, the weight of the wind power blade is reduced, the rigidity is improved, the aerodynamic performance of the wind power blade is improved, and loads on a tower and a blade shaft are reduced. Therefore, the output power of a fan is smooth and balanced, and the energy efficiency is improved. Meanwhile, the carbon-fiber blade is thin, the appearance design is effective, the wind power blade is thin and long, and the energy output efficiency is also improved.

Description

technical field [0001] The invention relates to the field of wind power blades, in particular to a wind power blade made of a carbon fiber and glass fiber mixed material. Background technique [0002] Blades are one of the key components of wind turbines, involving aerodynamics, composite material structures, processes and other fields. The length of the blade is proportional to the power of the fan, the greater the power of the fan, the longer the blade. The blade is also the most expensive component in a fan, although it accounts for less than 15% of the fan's weight. But the cost of wind blades accounts for about 10% of the cost of wind power. Wind blades are similar to aviation blades, which require a higher lift ratio, and their lift characteristics are not easily affected by the contamination and roughness of the blade surface. Structural considerations require the blade to have a thicker profile. The blades have to withstand 20 years of use, and the number of fati...

Claims

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Application Information

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IPC IPC(8): F03D11/00B32B17/12
CPCY02E10/72
Inventor 史晓雷张鹏
Owner CHANGCHUN LEILI MACHINERY MFG
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