Wind turbine blade for wind turbine generator

Abstract

The invention provides a wind turbine blade for a wind turbine generator. The wind turbine blade comprises a tower frame, a bearing is fixedly installed at the position, close to the upper end, of theouter surface of one side of the tower frame, and the bearing is connected with an umbrella-shaped frame in a penetrating manner; a fixed disc is movably connected in the umbrella-shaped frame, and rotating piece mechanisms are arranged on the outer surface of the fixed disc. The umbrella-shaped frame is composed of a semi-circular transverse strip and a semi-circular vertical strip, the semi-circular vertical strip penetrates through the position, close to the middle, of the outer surface of the upper end of the semi-circular transverse strip, a limiting hole is formed at the junction of thesemi-circular vertical strip and the semi-circular transverse strip, and the bearing penetrates through the limiting hole to the interior of the umbrella-shaped frame. According to the wind turbine blade, the rotating speed of the blade of a machine body can be reduced in time, damage to the machine body can be reduced, then, the bearing is protected, lasting operation of a machine is guaranteed;then, rotating blades can be conveniently disassembled and assembled, maintenance is convenient, the number of the rotating blades can be properly increased or decreased according to the rotating speed requirement, and finally the rotating blades can conveniently rotate in the accurate direction; and wind power can be utilized to the full extent for power generation.

Description

technical field [0001] The invention relates to the technical field of wind turbine blades, in particular to a wind turbine blade for a wind turbine generator. Background technique [0002] Most wind turbines are manufactured with pitch control or active stall control, where the blades are mounted on some kind of bearing in the hub and through the bearing the blades are able to rotate about the central axis of the hub flange. Buildings around the sea are less obstructive and the wind is stronger. Setting wind turbine generators on the sea can greatly increase the speed of power generation and effectively use wind energy. [0003] In the process of realizing the present invention, it is found that there are at least the following problems in the prior art that have not been resolved: 1. The general wind turbine blades are directly installed on the bearings of the hub. When the wind turbine generator is used at sea, the sea breeze is relatively large, and the blades rotate Ex...

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Problems solved by technology

[0003] In the process of realizing the present invention, it is found that there are at least the following problems in the prior art that have not been resolved: 1. The general wind turbine blades are directly installed on the bearings of the hub. When the wind turbine generator is used at sea, the sea breeze is relatively large, and the blades rotate Excessive speed will cause wear and tear of the machine; 2. Generally, the bearings on which the blades are installed are exposed, and the sea surface environment and climate are relatively special. There is a lot of rain, and the bearings are exposed for a long time, which will cause the infiltration of rainwater and the damage of its surface, thus affecting The blades rotate; 3. The structure of the general blades and blade generators is fixed, and the number of blades is also relatively fixed, and the number of blades cannot be increased or decreased according to the timely wind force; 4. The wind direction of the sea breeze will change with the influence of the climate environment, fixed The mechanism cannot adjust the wind direction of the blades in time, and cannot adapt to the wind direction well, so it cannot make good use of wind energy

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