Offshore wind turbine as well as blade damage preventing device and method

A blade and damage prevention technology, which is applied to wind power generators, wind power generation, wind power generators in the same direction as the wind, etc., can solve the problems of strong ice coating adhesion, poor effect, and difficult to achieve ice removal effect

Active Publication Date: 2017-02-22
GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the method of high elastic coating can only delay the corrosion time of the blade, and cannot fundamentally eliminate the internal stress of the blade
Moreover, the existing three deicing methods all remove the ice after ...

Method used

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  • Offshore wind turbine as well as blade damage preventing device and method
  • Offshore wind turbine as well as blade damage preventing device and method
  • Offshore wind turbine as well as blade damage preventing device and method

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Embodiment Construction

[0033] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes ...

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Abstract

The invention relates to an offshore wind turbine as well as a blade damage preventing device and method. Surface pressure on blades can be sensed by pressure sensors. When the blades are hit by falling snow or raindrops, the surface pressure on the blades is increased until preset conditions are met, and thus a trigger signal is sent out. Further, a controller sends out a vibration signal, vibrators arranged in the blades produce vibration at the vibration frequency. The falling snow and the raindrops which hit the blades can be thrown off and can be prevented from being attached to surfaces of the blades through vibration and high-speed rotation of the blades. The falling snow and super-cooled water drops are major causes for icing of the surfaces of the blades. Besides, vibration produced by hitting of the raindrops can be offset by vibration of the blades, so that the internal stress is prevented from being accumulated in the blades. Thus, with the blade damage preventing device and method, icing and the internal stress can be effectively prevented.

Description

technical field [0001] The invention relates to wind power generation technology, in particular to an offshore wind power generator, a blade damage prevention device and a method. Background technique [0002] Because they are generally installed in places with harsh environments such as high mountains and seas, the blades of offshore wind turbines are prone to freezing. After icing occurs, the aerodynamic characteristics of the blade surface will be destroyed, which will affect the efficiency and safe operation of the wind turbine. In addition, when high-speed continuous water droplets hit the surface of the blade, a large internal stress will be generated inside the blade. With the accumulation of internal stress, it will gradually develop into macroscopic defects (trachoma, groove-like defects, etc.), which seriously endanger the use of the blade. efficiency and longevity. Therefore, in order to ensure normal operation, it is necessary to eliminate the icing on the surf...

Claims

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Application Information

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IPC IPC(8): F03D1/06F03D80/50F03D80/40
CPCF03D1/06F05B2270/301F05B2270/404Y02E10/72
Inventor 王志刚杨波李仕平陈志刚李茂东林金梅翟伟张双红黄国家辛明亮邱樾伍振凌
Owner GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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