Double-impeller grid-connected wind driven generator

Abstract

The invention belongs to the technical field of wind power generation, and particularly relates to a double-impeller grid-connected wind driven generator which comprises a tower, a power generation box and a speed reduction block. The upper surface of the tower is fixedly connected with the power generation box. Driving columns are rotationally connected to the left and right side faces of the power generation box, and the surfaces of the two driving columns are fixedly connected with fan blades which are uniformly arranged. Transmission columns are fixedly connected to the side faces of the opposite sides of the two driving columns. The transmission columns are connected with a balance rod, and the speed reduction block is hinged with the other end face of the balance rod. According to the double-impeller grid-connected wind driven generator, the motion resistance braking of the wind driven generator is effectively realized; compared with traditional pneumatic braking and mechanical braking, resistance braking has the advantages that the relatively reliable motion resistance is provided, the resistance is generated without depending on friction, and therefore the much friction heat cannot be generated, the working pressure of a cooling system can be reduced, and sustainable operation of the wind driven generator in stormy weather is also achieved.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, in particular to a double impeller grid-connected wind power generator. Background technique [0002] The demand for electricity in modern society is getting higher and higher. On the one hand, traditional thermal power generation consumes non-renewable coal resources. On the other hand, it will cause serious pollution to the atmospheric environment. In order to increase power generation and reduce pollution to the atmospheric environment, the A large number of wind power generation technologies are used. In the process of wind power generation, wind power generators will be used. [0003] The main form of existing wind power generators is that one impeller completes the reception and conversion of wind energy, and the wind direction of the wind power generator is positioned by the tail. The medium and small wind power generators are mainly in the form of off-grid, and need to be eq...

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Problems solved by technology

[0006] In order to make up for the deficiencies of the prior art, solve the problem that when the wind power generators of the prior art are in operation, the rotating speed of the fan blades is faster when the wind force is relatively large. Because the volume and quality of the fan blades are relatively large, the high-speed rotating fan blades are easy to In order to prevent the excessive rotation of the blades, two methods of braking are usually used, including pneumatic braking and mechanical braking. Pneumatic braking is On the fixed-pitch fan, let the hydraulic cylinder of the blade move, so that the turbulent flow at the tip of the blade is thrown out under the action of centrifugal force, and rotates 90 degrees to generate aerodynamic resistance to achieve aerodynamic resistance; while the mechanical brake uses hydraulic pressure or springs. Make the brake pads and brake discs interact to generate braking torque; through the above two methods, it is difficult to achieve a complete braking effect in the pneumatic method, and the braking effect is weak, and through mechanical braking, because the mechanical brake produces a large amount of braking force during braking. When the wind force is strong for a long time, it is difficult to dissipate more heat generated by mechanical braking, which may easily cause the fan to catch fire, especially for the double-impeller wind discharger. For more demanding problems, the present invention proposes a double impeller grid-connected wind power generator

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