De-icing of a wind turbine blade

一种风力涡轮、发电机叶片的技术，应用在风力发动机、风力发电机组件、发动机等方向，能够解决转子平面质量不均衡等问题

Active Publication Date: 2014-11-19
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Unbalanced mass on the rotor plane
[0006] Hazard of ice being thrown off the blade

Method used

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  • De-icing of a wind turbine blade
  • De-icing of a wind turbine blade
  • De-icing of a wind turbine blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] figure 1 The wind turbine generator blade 5 is shown in cross-sectional view. The blade 5 includes a spar 22 to provide structural support to the blade, mounted on which is a heat reservoir 10 for receiving a flow of hot air through an insulated duct 12 . Said duct 12 is connected to a hot air generator, such as a fan or a pump that flows air through the heating element. Alternatively, wasted energy from wind turbine generators (such as within the nacelle) may also provide a heat source.

[0022] Protruding from the heat reservoir 10 are a plurality of ducts 14 that send hot air to the leading edge 20 of the blade. Doing so allows the hot air to heat the leading edge 20 sufficiently to allow removal of ice 18 that has formed on the leading edge so that the ice partially melts and falls from the blade to provide better performance.

[0023] In the event of freezing, ice 18 may accumulate at an accelerated rate on the leading edge of the blade, changing the shape of th...

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PUM

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Abstract

A heating assembly for a blade of a wind turbine generator, said heating assembly comprising: a heat reservoir positioned within a cavity of said blade, said heat reservoir in communication with a heat source; said heat reservoir including a plurality of orifices for venting hot air from said heat reservoir.

Description

technical field [0001] The present invention relates to wind turbine generators (WTG) for use in generating electricity. In particular, the present invention relates to means for removing ice from rotor blades of wind turbine generators. Background technique [0002] Blade deicing is critical in WTG as there is a 20% to 50% increase in yield loss factor. Ice buildup on wind turbine blades causes: [0003] Altered aerodynamic shape resulting in significantly lower power generation [0004] Increased blade root loading and reduced blade life [0005] Unbalanced mass on the rotor plane [0006] Hazard of ice being thrown off the blade [0007] In the case of melting ice, the main feature is that the interface between the blade surface and the ice must be greater than the freezing point. As the melting proceeds at the interface of the blade surface with the ice, the ice is broken off by wind and gravity. [0008] The heat and time required to melt ice depends on many fact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00
CPCF05B2260/20Y02E10/722F03D11/0025F03D80/40Y02E10/72Y02T50/60
Inventor A·巴胡古尼R·坎达萨米V·H·王
Owner VESTAS WIND SYST AS
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