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Blade, blade sawtooth tail edge and manufacturing method of blade sawtooth tail edge

A manufacturing method and sawtooth technology, which are applied to the blade sawtooth trailing edge and its manufacturing, and the field of blades, can solve problems such as high blade noise, and achieve the effects of reducing noise and improving aerodynamic performance.

Inactive Publication Date: 2016-04-13
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a blade, a sawtooth trailing edge of the blade and a manufacturing method thereof, so as to solve the problem of high noise in the working process of the blade of the existing wind power generator

Method used

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  • Blade, blade sawtooth tail edge and manufacturing method of blade sawtooth tail edge
  • Blade, blade sawtooth tail edge and manufacturing method of blade sawtooth tail edge
  • Blade, blade sawtooth tail edge and manufacturing method of blade sawtooth tail edge

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Embodiment Construction

[0031] The blades, blade sawtooth trailing edges and manufacturing methods of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Such as figure 1 As shown, the sawtooth trailing edge of the blade includes a sawtooth 1 and a bonding area 2 fixedly connected to the bottom edge of the sawtooth 1 . The bonding area 2 is used to connect with the blade, so that the serrated trailing edge of the blade can be reliably fixed on the blade. The sawtooth 1 can reduce the turbulent flow at the trailing edge of the blade, thereby reducing the noise when the blade is in operation. The chamfer 3 provided on the edge of the sawtooth 1 and / or the bonding area 2 can make the air flow more smoothly over the surface of the serrated trailing edge of the blade, thereby reducing noise and reducing the impact of the serrated trailing edge on the blade’s aerodynamic performance Impact.

[0033] see in conjunction figure ...

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Abstract

The invention provides a blade, a blade sawtooth tail edge and a manufacturing method of the blade sawtooth tail edge. The manufacturing method of the blade sawtooth tail edge comprises the following steps: a sawtooth tail edge forming step: cutting out a sawtooth tail edge, which comprises sawteeth and a bonding region fixedly connected with bottom edges of the sawteeth, in a substrate; and an after-treatment step: forming chamfers at edges of the sawteeth and / or the bonding region of the sawtooth tail edge. The chambers are formed on the sawteeth to enable airflow to flow past a surface of the blade sawtooth tail edge more smoothly, and therefore, the aerodynamic performance of the blade is improved and noise is reduced.

Description

technical field [0001] The invention relates to the field of wind power generation equipment, in particular to a blade, a sawtooth trailing edge of the blade and a manufacturing method thereof. Background technique [0002] With the rapid development of the wind power industry, in order to increase the wind capture capacity per unit area of ​​the wind farm, the capacity of a single wind turbine is increasing, the length of the blades is also increasing, and the radiation noise is also increasing. [0003] Studies have shown that the main noise of wind turbines comes from the aerodynamic noise of the blades, that is, the noise caused by the interaction between the incoming wind and the blades, and the level of aerodynamic noise is approximately proportional to the fifth power of the blade tip speed. Another noise source of wind turbines is mechanical noise, such as the noise of gearboxes, generators, etc. Under the existing technical conditions, mechanical noise can be well c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/00
CPCF05B2240/21F05B2240/30F05B2260/96Y02E10/72Y02P70/50
Inventor 朱加凯陈余岳
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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