Tidal current energy and vortex-induced vibration energy comprehensive power generation device

Abstract

The invention provides a tidal current energy and vortex-induced vibration energy comprehensive power generation device. The tidal current energy and vortex-induced vibration energy comprehensive power generation device comprises a tidal current energy water turbine and a vortex-induced vibration energy capturing device. A power generator, a power distribution box and a rectifying and voltage-stabilizing device which are sequentially connected with an impeller through wires are arranged in a power generator cabin of the tidal current energy water turbine. The vortex-induced vibration energy capturing device comprises a shell, a vibrator sliding along a guide rail, and a piezoelectric plate, wherein the shell is mounted on the rear side of a single pile foundation, the two end edges of the vibrator are arranged on the top surface and the bottom surface of the shell, and the two ends of the piezoelectric plate are connected with the vibrator and the rear end face of the shell correspondingly; and a conductive copper sheet is arranged at the end, connected with the rear end face of the shell, of the piezoelectric plate and sequentially connected with the rectifying and voltage-stabilizing device and the power distribution box located in the power generator cabin through wires. Water flow enters the shell after encountering the single pile foundation of the water turbine, vortexes falling alternately are generated on the two sides of the pile foundation, and vortex resonance is formed when the vortexes pass through the vibrator; and under the wake flow galloping effect, the vibration amplitude of the vibrator is greater than the vibration amplitude caused by resonance of ordinary vortexes, the vibrator drives the piezoelectric plate to swing left and right, and thus mechanical energy is converted into electric energy.

Description

technical field [0001] The invention relates to the field of ocean energy development and utilization, in particular to an ocean energy power generation device. Background technique [0002] Ocean energy refers to the energy produced by the use of ocean movement. Unlike traditional fossil fuels, it does not produce waste gas or waste water during the production process, has little environmental pollution, and has abundant ocean energy reserves, making it a renewable energy source with great potential. [0003] Among all forms of ocean energy, tidal current energy is a kind of energy extracted by using the horizontal movement of the tide. Because the tidal current has certain periodicity, high energy density and high predictability, it has received more and more attention in recent years. At present, there are mainly three types of tidal current energy generation devices, namely, horizontal axis tidal current energy turbines, vertical axis tidal current energy turbines and os...

AI Technical Summary

Problems solved by technology

At present, there are no patents or research reports on extracting the flow energy of the flow field behind the tidal current turbine pile foundation.

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