Retractable blade vertical-axis tidal turbine

Abstract

The invention discloses a retractable blade vertical-axis tidal turbine, which comprises a rotating shaft, a turntable, blades, retractable support arms, eight guide rails, guide rail wheels, baffle plates, a controller and a support part, wherein the guide rails are positioned in the turntable, and are divided into two layers, and each layer comprises four guide rails; the guide rails are uniformly welded on the rotating shaft at intervals of 90 degrees; the guide rail wheels are mounted on the inner surfaces of the guide rails; a retractable support arm is mounted in each guide rail; the support arms are retractably and movably connected with the guide rails through the guide rail wheels; the blades are mounted at the ends, far away from the turntable, of the support arms; the blades are rectangular, and are positioned on the same planes as the upper and lower layers of retractable support arms; the baffle plates are fixedly mounted at the ends, far away from the turntable, of the blades, and are in right-angled connection with the blades; the blades slide in the guide rails through the retractable support arms, and are controlled by the controller to retractably move. According to the retractable blade vertical-axis tidal turbine with such a retractable design, the energy yielding efficiency of the vertical-axis turbine is improved, the size of the whole device is reduced, convenience in transportation and considerable market prospect are achieved, and the submarine mounting cost is reduced.

Description

technical field [0001] The invention relates to a vertical axis tidal current energy water turbine, in particular to a vertical axis tidal current energy water turbine with automatically controlled retractable blades. Background technique [0002] Excessive consumption of energy has led to energy shortages, serious environmental pollution and other issues. Tidal current energy is a renewable clean new energy with large total reserves. It does not need to build dams to store water, and has little impact on marine organisms and the environment. Therefore, the Chinese government has continuously increased the importance of tidal current power generation in recent years. with inputs. The vertical axis tidal energy turbine is a relatively common power generation device in the tidal energy power generation device. However, the vertical axis turbines currently in use generally have the problem of low energy capture efficiency. Efficiency puts forward higher requirements. Conten...

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Problems solved by technology

The vertical axis tidal energy turbine is a relatively common power generation device in the tidal energy power generation device. However, the ve

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