Wind power generator set and vane deicing device thereof

Abstract

The invention discloses a wind power generator set and a vane deicing device thereof. The vane deicing device comprises an electric heating element mounted on a vane, the electric heating element comprises a carbon-fiberglass hybrid fabric and electrode components, the carbon-fiberglass hybrid fabric comprises a carbon fiber group in a vane length direction, a carbon fiber group in a vane chord length direction and fiberglass bundles, and the carbon fiber group in the vane length direction, the carbon fiber group in the vane chord length direction and the fiberglass bundles are woven together.The electrode components are mounted at two ends of each carbon fiber bundle of one of the carbon fiber group in the vane length direction and the carbon fiber group in the vane chord length direction. By the vane deicing device, vanes can be deiced effectively, misplacement of the carbon fiber bundles is prevented, and faults such as fiber intertwining and short circuit can be avoided.

Description

technical field [0001] The invention relates to the field of wind power generation, and in particular, the invention relates to a device for defrosting blades of a wind power generating set. Background technique [0002] Wind turbines in some areas will face extreme weather such as frost, cold wave, and freezing rain during the cold period, resulting in ice-covered, frost-covered, and snow-covered blades. These phenomena will directly change the surface and cross-sectional shape of the blade, reduce the efficiency of the blade to absorb wind energy, cause mechanical damage to the unit, increase the load of the unit, and shift the center of gravity. At the same time, ice falling off poses a safety hazard to on-site personnel and on-site equipment. In addition, icing and snow on the blades will also affect the accuracy of wind measurement, and bring serious economic loss of power generation to the wind farm. The cumulative number of ice-covered days in a wind farm in Gansu fr...

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Problems solved by technology

Each layer of carbon fiber cloth can also adopt a bidirectional fiber arrangement method. For example, as disclosed in some patents, the arrangement angle of the bidirectional carbon fiber cloth is ±15 to ±75 degrees, and each layer of carbon fiber cloth must be continuous in the conductive direction without interruption. Due to the specific weaving angle, the arrangement of electrodes or power sources of carbon fiber cloth becomes very complicated, which is not suitable for general practical applications

[0005] In addition, there are still the following defects: if there is no fixing measure for the weaving and handover of existing carbon fiber bundles, it is easy to cause random deformation of the shape during the curing process by injecting resin, which makes the positioning process difficult; After vacuum infusion of resin, it is easy to cause the hollow part to collapse, resulting in uneven surface of the blade, which affects the aerodynamic profile of the blade. If it is necessary to fill the ground and collapse, it will significantly increase the workload; because the carbon fiber bundles are hollowed out, the carbon fiber bundles are simply used. The air is insulated, and there is no other insulation between each other, which may cause the carbon fiber bundles to be connected to the surrounding circuits and cause a short circuit; because the carbon fiber bundles become hard after resin curing treatment, their flexibility and bendability are poor, so they are not suitable for subsequent laying. Airfoil surface; the current plating electrode process of carbon fiber bundles needs to fully ensure that each carbon fiber bundle is wrapped in the plating metal, and the plating layer is relatively thin, which may become brittle during transportation and cause the electrode to split; if a There is a break point in the carbon fiber filament, and the entire carbon filament corresponding to the break point will not be able to generate heat, and the corresponding blade surface area will not be able to achieve a good ice melting effect

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