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Wind turbine blade and wind turbine

A technology of wind turbine blades and blade body, applied in the energy field, can solve the problems of reducing the life of wind turbines, blade flutter, etc., and achieve the effect of reducing noise

Inactive Publication Date: 2013-10-02
中国大唐集团科学技术研究总院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wind turbine blades are slender and flexible components. If the frequency of vortex shedding is close to the natural frequency of the blades, it will cause blade flutter and reduce the life of the wind turbine.

Method used

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  • Wind turbine blade and wind turbine
  • Wind turbine blade and wind turbine
  • Wind turbine blade and wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like figure 2 Shown is a schematic diagram of a wind turbine blade provided by this application; image 3 shown, is figure 2 The C-C cross-sectional schematic diagram of the wind turbine blade; such as Figure 4a and 4b shown, is figure 2 and image 3 A simplified schematic diagram of the enlarged structure of the two flaps in ; Figure 5 Shown is another schematic diagram of a wind turbine blade provided by the present application.

[0036] One of the cores of this application is to install flaps on the blades of the wind turbine, which effectively avoids that when the wind turbine is unloaded, the blades are not facing the incoming wind direction, which may cause the failure of the yaw structure and the pitch system. Adjust the yaw so that the incoming wind is facing the blades before the wind suddenly changes direction. The pitched rear blades provide a blunt structure to align with the inflow wind, which can cause such image 3 The vortex shedding shown o...

Embodiment 2

[0048] Such as figure 2 As shown in -4, the present application proposes a wind turbine, and the flap as described in Embodiment 1 is installed on the trailing edge of the blade.

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Abstract

The application of the invention provides a wind turbine blade and a wind turbine. The wind turbine blade includes a blade body and at least one flap flexibly mounted at the trailing edge of the blade body, wherein the flap is provided with two panels and an elastic component; the two panels are oppositely fixed on the two sides of the elastic component and rotate by taking the elastic component as a shaft, so as to form a meshed clamping structure at one end of the elastic component and forms a folding dovetail structure at the other end of the elastic component. The flap is meshed with the trailing edge of the blade body through the clamping structure, the clamping structure is fastened with the trailing edge of the blade body through the thrust applied on the inner side of the dovetail structure, of the elastic component, so that the aerodynamic characteristics of the blade body can be improved and further chattering of the blade body is reduced.

Description

technical field [0001] The present application relates to the field of energy technology, in particular to a wind turbine blade and a wind turbine. Background technique [0002] Wind energy, as a clean and renewable energy, has developed rapidly in the past decade due to energy, environment, and climate issues. Obviously, the cleanliness and renewable nature of wind energy and its large-scale application technology are increasingly mature, making wind power generation increasingly the most mature, most developmental and most promising power generation method in the field of new energy besides nuclear energy. [0003] At present, wind turbines are composed of rotors, hubs, blades, gearboxes and drive trains, generators, power conditioning devices, software control and monitoring. The vibration of the wind turbine rotating blade along the side is very susceptible to the vibration parallel to the chord length direction. Problems easily occur when the wind turbine is idle or t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06
CPCF03D1/0633F05B2260/96F05B2240/305Y02E10/72
Inventor 薛宇刘燕张蔚马斌
Owner 中国大唐集团科学技术研究总院有限公司
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