An external microwave deicing device and method for horizontal axis wind turbine blades

A wind-driven generator, external-mounted technology, applied to wind-driven engines, wind-powered engines, wind power generation, etc. in the same direction as the wind, can solve the problems of low deicing efficiency, inconvenient maintenance, and difficult to guarantee deicing effect, etc., to achieve High heating efficiency and energy utilization, easy maintenance, and wide deicing range

Active Publication Date: 2020-11-27
中科宇能科技发展有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with only heating the leading edge of the blade is that in cold weather, the melted ice turns into water and flows to other areas of the blade, which is likely to freeze again, making it difficult to achieve complete deicing. On the other hand, only the leading edge of the blade Electric heating materials are arranged in the area, and other areas of the blade cannot be deiced by electric heating after freezing
For electric heating deicing, the problem that needs to be considered is lightning protection and leading edge protection. The corrosion of the leading edge of the blade will damage the electric heating material, making the effect of electric heating deicing unsustainable, and frequent maintenance may be required
Expansion deicing is also only suitable for deicing the surface of the leading edge of the blade, and the ice in other areas of the blade cannot be removed by this method
Some deicing methods have relatively high energy consumption and low deicing efficiency. For example, air heating deicing, because the composite material that constitutes the blade has poor thermal conductivity, it takes a long time for the heat to transfer from the inner surface of the blade to the outer surface due to the heat circulating air in the inner cavity of the blade. Long time, low heat utilization
However, if only the leading edge area of ​​the blade is heated, the overall deicing effect of the blade cannot be achieved.
In addition, solvent deicing requires manual operation or drone operation. This method is labor-intensive, and the deicing effect is difficult to guarantee, and some deicing agents pollute the environment.
Among these methods, the deicing system (such as electric heating deicing, air heating deicing, and ultrasonic deicing) installed inside the blade is extremely inconvenient to maintain, and may fail once it fails.

Method used

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  • An external microwave deicing device and method for horizontal axis wind turbine blades
  • An external microwave deicing device and method for horizontal axis wind turbine blades
  • An external microwave deicing device and method for horizontal axis wind turbine blades

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Embodiment 1

[0051] like Figure 2-5 As shown, the external microwave deicing device 4 for wind turbine blades of the present invention includes a moving mechanism 410 and a heating mechanism, and the heating mechanism is arranged on the moving mechanism. Wherein, the moving mechanism 410 includes at least one annular carrier and a driving unit, the driving unit is a motor arranged in the annular carrier, the annular carrier is arranged around the outer wall of the wind power generator tower, and the driving unit is used to drive the annular carrier The outer wall of the carrier moves up and down. Specifically, the annular carrier includes two semicircular carrier units 411, 412 interconnected by hinges, and at least two rows of rollers 413, 414 are arranged on the inner wall of each semicircular carrier unit 411, 412. The rollers are driven by the motor in the carrier to rotate forward or reverse. The motor is turned on and off by the control unit of the moving mechanism. The outermost la...

Embodiment 2

[0055] The difference between this embodiment and Embodiment 1 is that the drive unit in the moving mechanism is set in a different way, and the rest of the structure is the same, such as Figure 6 shown. In this embodiment, the driving unit is a hoisting device arranged in the nacelle of the wind-driven generator, and the hoisting device is a hoisting motor 21 arranged in the nacelle of the wind-driven generator. Lifting equipment realizes the lifting of the ring carrier by retracting and unwinding the cable.

[0056] When using the above-mentioned external microwave deicing device of the present invention to deicing the horizontal axis wind turbine blades, the following steps can be followed:

[0057] SS1. Turn the wind rotor of the wind turbine to rotate the blade to be deiced to be perpendicular to the ground;

[0058] SS2. Install the external microwave deicing device of the present invention at the bottom of the wind power generator tower, surround the annular carrier ...

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Abstract

The invention provides an external microwave deicing device and method for a horizontal-axis wind turbine generator blade. The external microwave deicing device comprises a moving mechanism and a heating mechanism, wherein the heating mechanism is arranged on the moving mechanism and can move up and down along the outer wall of a wind turbine generator tower through the moving mechanism; the heating mechanism is provided with an extending arm and a deforming arm, and the extending arm is used for pushing the deforming arm near the blade or pulling away the deforming arm from the blade surface;and an ice accretion monitoring device and a microwave transmitting device are arranged on the deforming arm. The ice accretion condition of the blade surface is observed by the ice accretion monitoring device, and the microwave transmitting device is started properly to heat the ice accretion area of the blade surface. A top-down deicing way is adopted in the deicing process, so that the deicingis thorough. The operation safety and efficiency of a wind turbine generator in winter are effectively guaranteed.

Description

technical field [0001] The invention belongs to the field of horizontal axis wind power generators, and relates to a deicing device and method for blades of a horizontal axis wind power generator, in particular to an external microwave deicing device and method for blades of a horizontal axis wind power generator. Background technique [0002] As a renewable and clean energy, wind energy has great development potential and value, and has attracted worldwide attention. A horizontal axis wind turbine is a device that converts wind energy into electrical energy, and usually consists of three parts: rotor blades, generator and tower. When the wind flows through the rotor blades with a certain aerodynamic shape, a pressure difference will be formed between the windward side and the leeward side of the blades, pushing the blades to rotate around the central axis, driving the generator to rotate and output electric energy. The aerodynamic shape of the blade directly affects the th...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F03D80/40F03D80/60F03D1/06
CPCF03D1/06F03D80/40F03D80/60Y02E10/72
Inventor徐宇谢存存
Owner中科宇能科技发展有限公司