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Wind turbine blade with trailing edge flat plate

A technology of wind turbine blades and flat plates, which is applied to wind engines, wind turbine components, engines, etc., can solve the problems of increased manufacturing costs, and achieve the effect of simple and convenient processing

Inactive Publication Date: 2015-01-28
东方电气风电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of units above 5MW and plateau units, the overall development trend of the blades is that the length continues to increase, but new problems will arise after the blade length increases, such as aeroelasticity, flutter, and the distance between the blade tip and the tower. Wait
In addition, the increase of blade length will also increase the manufacturing cost of the whole machine.

Method used

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  • Wind turbine blade with trailing edge flat plate
  • Wind turbine blade with trailing edge flat plate
  • Wind turbine blade with trailing edge flat plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: as Figure 1 to Figure 3 As shown, a wind turbine blade with a trailing edge plate structure includes a blade 1, a trailing edge plate 2 is installed on the trailing edge of the blade 1, and the trailing edge plate 2 is installed close to the trailing edge 7 of the blade. One side of the trailing edge plate 2 is close to the trailing edge 7 of the blade, and the other side is higher than the windward surface 8 of the blade. The blade section airfoil chord 5 is between the blade leading edge 6 and the blade trailing edge 7; The included angle α is 0°~90°. The trailing edge plate 2 is divided into multiple sections, and each section of the trailing edge plate 2 has a smooth transition. The trailing edge plate structure is positioned between the 60% span position and the 90% span position of the blade. The width of the trailing edge plate is 5% times the chord length of the blade section airfoil.

[0020] For wind turbines with variable speed and pitch co...

Embodiment 2

[0023] Embodiment 2: The difference from Embodiment 1 is that the width of the trailing edge plate is 1% times the chord length of the blade section airfoil; the rest is the same as Embodiment 1.

Embodiment 3

[0024] Embodiment 3: The difference from Embodiment 1 is that the width of the trailing edge plate is 2% times the chord length of the blade section airfoil; the rest is the same as Embodiment 1.

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Abstract

The invention discloses a wind turbine blade with a trailing edge flat plate structure. The wind turbine blade comprises a blade body and is characterized in that the trailing edge flat plate is arranged on the trailing edge of the blade body and is arranged adjacent to the trailing edge of the blade body. Compared with the like blade without the trailing edge flat plate structure, the wind turbine blade disclosed by the invention has the advantage that the wind catching capability is improved by 3-5 percent; the trailing edge flat plate structure can be added at the initial stage of the blade design or can be added when the blade which is mounted on the turbine is reformed; the wind turbine blade is simple and convenient for processing.

Description

technical field [0001] The invention relates to wind power equipment, in particular to a wind turbine blade with a trailing edge plate structure for increasing the output of a wind turbine at a low wind speed. Background technique [0002] With the rapid commissioning of wind farms in the early 21st century, technical problems have become increasingly prominent in recent years. Whether the power of wind turbines has reached the design power has always been the focus of attention. With the development of units above 5MW and plateau units, the overall development trend of the blades is that the length continues to increase, but new problems will arise after the blade length increases, such as aeroelasticity, flutter, and the distance between the blade tip and the tower. wait. In addition, the increase of the length of the blade will also increase the manufacturing cost of the whole machine. How to increase the wind-capturing capacity of the blade without increasing the leng...

Claims

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Application Information

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IPC IPC(8): F03D11/00
CPCF05B2240/21F05B2240/30
Inventor 李杰戚中浩赵萍宋聚众钟贤和尹景勋羊森林曾明伍方程
Owner 东方电气风电股份有限公司
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