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Improved electro-thermal heating elements

A heating element and electric heating technology, applied in heating element materials, electrical components, ohmic resistance heating, etc., can solve the problems of embedded ETH component damage, difficult to damage ETH component embedded ETH component repair, etc., and achieve the effect of effective maintenance

Active Publication Date: 2020-02-18
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, if the surface or structure of the blade is damaged, which in turn leads to damage to the embedded ETH element, it is difficult to repair the embedded ETH element without further damaging the ETH element or without having to replace the entire ETH element within the blade structure. repair

Method used

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Examples

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Embodiment Construction

[0024] figure 1 A schematic diagram of a typical wind turbine 10 comprising an embodiment of a wind turbine blade 19 according to the invention is shown. Wind turbine 10 is mounted on a foundation 12, which may be an onshore foundation or an offshore platform or foundation. The wind turbine includes a tower 14 having a plurality of tower sections. A nacelle 16 is located on top of and attached to the tower 14 . The wind turbine rotor connected to the nacelle 16 includes a hub 18 and at least one wind turbine blade 19, wherein figure 1 Three wind turbine blades are shown in , however there may be any number of wind turbine blades 19 depending on the design and implementation of the wind turbine 10 . The wind turbine blades 19 are connected to a hub 18 which in turn is connected to the nacelle 16 by a low speed shaft extending out of the front of the nacelle 16 .

[0025] refer to figure 2 , within the blade 202 structure, electrothermal heating (ETH) elements 201 may be e...

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Abstract

Improved Electro-Thermal Heating Elements. The present invention relates to an Electro-Thermal Heating element for a wind turbine blade comprising an electrically conductive resistive material; two active busbars for supplying electrical power to the electrically conductive resistive material; and at least one dummy busbar at a predetermined spacing between the two active busbars on the electrically conductive resistive material. The present invention is also directed to a method of repair of the Electro-Thermal Heating Element.

Description

technical field [0001] This invention relates to electrothermal heating (ETH) elements, and more particularly to the repair of electrothermal heating elements. Background technique [0002] Wind turbines use wind energy to generate electricity and can be located on land or water. Wind turbines in cold climates may be subject to icing events in which ice may form on the surface of the wind turbine blades due to water freezing on the cold surface. The accumulation of ice on the blade surface can lead to undesired consequences. For example, changes in the profile of wind turbine blades due to ice accumulation can reduce the rotational speed of the wind turbine. Consequently, the wind turbine may operate at less than optimum efficiency, which deteriorates the performance of the wind turbine. Furthermore, the added weight of ice accumulating on wind turbine blades may lead to fatigue and stress failure of the blades. [0003] Therefore, there is a need to be able to prevent o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/40F03D17/00F03D80/60
CPCF03D80/40F03D17/00F03D80/60Y02E10/72F03D1/0675H05B3/00H05B2203/00H05B3/18H05B2214/02H05B3/0023
Inventor L·斯潘德利A·伍德D·罗杰斯
Owner VESTAS WIND SYST AS