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Wind turbine blade deicing method, device, blade and wind turbine

A wind turbine blade and blade leading edge technology, applied in the field of blades and wind turbines, wind turbine blade deicing, can solve the problems of long ice melting time and high hardware cost, and achieve increased power generation, reduced deicing costs, and reduced heating The effect of power

Active Publication Date: 2020-08-11
大连义邦科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both of these two methods require high-power heating equipment, and the hardware cost is high; at the same time, it takes a long time for the heating process, and the ice-melting time is relatively long

Method used

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  • Wind turbine blade deicing method, device, blade and wind turbine
  • Wind turbine blade deicing method, device, blade and wind turbine
  • Wind turbine blade deicing method, device, blade and wind turbine

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Embodiment Construction

[0028] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] At present, the icing detection scheme based on the engine room is an indirect detection, which cannot reflect the icing state of the blades in a timely and accurate manner, and cannot be used in conjunction with the blade heating and deicing system. The blade-based icing detection scheme is a direct detection, which can reflect the overall icing state of the blade. At the same time, each scheme has the limitation that it cannot be used under all working conditions. In addition, the most important thing is that th...

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Abstract

The invention provides a wind turbine blade deicing method and device, a blade and a wind turbine, and relates to the technical field of wind power generation. The method comprises the steps of detecting the icing degrees of at least two positions of the blade leading edge, and judging the icing level of the blade leading edge according to the icing degree; selecting a first heating level, a second heating level or a third heating level according to the icing level of the blade leading edge for heating, wherein the at least two positions comprise a blade tip leading edge and a blade root leading edge; a heating area of the first heating level is the front end heating area of the blade leading edge, and heating areas of the second heating level are the two side heating areas of the blade leading edge; and the heating power density of the front end heating area of the blade leading edge is higher than the heating power density of the two side heating areas of the blade leading edge. According to the wind turbine blade deicing method, the icing degrees of different areas of the blade leading edge can be detected in real time accurately, and ice can be thawed quickly and effectively while the heating power is reduced; and the deicing cost can be reduced, and the generated energy is improved.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a wind turbine blade deicing method, device, blade and wind turbine. Background technique [0002] Wind turbines (referred to as wind turbines) are usually installed in areas with relatively harsh environments. Icing of blades of wind turbines will lead to low efficiency of wind turbines and affect power generation and safety. At present, there are two main ways to detect blade icing. One is to install the icing sensor in the engine room, and indirectly infer whether the blade is icing and the degree of icing by detecting the icing thickness of the engine room; this method cannot accurately reflect the degree of icing of the blade frozen state. The other is based on blade icing detection. The degree of blade icing can be judged by means of wind speed-power curve relationship during unit operation, blade shape observation by video, and vibration acceleration sensor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D80/40F03D80/60
CPCF03D80/40F03D80/60Y02E10/72
Inventor 姜中左
Owner 大连义邦科技有限公司
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