Circumferential inhaul cable structure of vertical axis wind turbine

Abstract

The invention discloses a circumferential inhaul cable structure of a vertical axis wind turbine. The wind turbine comprises a tower column and a wind wheel, wherein the wind wheel comprises a supporting wheel and blades as well as an inhaul cable, the supporting wheel is composed of a plurality of supporting bars, the blades are connected with the supporting bars; and the inhaul cable is respectively connected with two adjacent blades. In the invention, the inhaul cable structure is utilized to connect all the blades together, position change between adjacent blades is limited, and circumferential joggling of the blades in a rotating process is effectively prevented, thus torques provided for the turbine by all the blades are uniform and the service life of the turbine is prolonged. The inventor provides an optimal connection site of the inhaul cable and the blades, the stability of the connection site is the best, and the pneumatic characteristic of the wind wheel is not influenced. Compared with a rigid supporting wheel composed of rigid connection supporting bars in the prior art, the structure is greatly simplified, and the pneumatic characteristic of the wind wheel is not influenced; besides, the wind power coefficient can be effectively improved, thus the structure disclosed by the invention has good application prospect and market prospect.

Description

technical field [0001] The invention relates to a vertical axis wind power generator, in particular to a circumferential cable structure of the vertical axis wind power generator. Background technique [0002] The vertical axis wind power generator generally includes a tower, a wind wheel and a generator. The generator is arranged on the tower. The wind wheel includes a support wheel and blades. The support wheel is composed of a number of support rods, and the blades are connected to the support rods. , the support rod is connected with the rotating part of the generator. When the blade rotates under the action of wind, since the wind direction and wind speed are very different at different heights and different positions, the driving torque of the blade at different positions is also different. When the support rods supporting the blades are arranged independently of each other, the following problems will occur: [0003] 1) The blade produces circumferential vibration; ...

AI Technical Summary

Problems solved by technology

[0003] 1) The blade produces circumferential vibration;

[0004] 2) The overall driving torque vibration amplitude of the wind wheel is large, and the force at the connection between the generator and the support rod is uneven;

[0005] 3) The load amplitude of the support rod is large, which reduces the fatigue life of the wind rotor, support rod and generator

[0007] However, for large-scale wind turbines, this conventional practice is not only uneconomical, but also increases the moment of inertia of the wind wheel and deteriorates the aerodynamic characteristics due to the increase in the rigidity of the support rod or the formation of a rigid support wheel, which greatly reduces the power generation efficiency and even causes Structurally impossible to achieve

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