Buoyant pendulum mechanism and oscillating water column type wave power generation device

Abstract

The invention provides a buoyant pendulum mechanism and oscillating water column type wave power generation device and belongs to the technical field of new energy. According to the power generation device, when waves move towards a coastal plate or retreats, a buoyant pendulum is pushed to swing back and forth, and a piston in a double-action hydraulic cylinder conducts reciprocating motion so asto continuously supply pressure oil to a hydraulic motor generator set; meanwhile, an oscillating water column oscillates up and down, air in an air chamber is pushed to enter an air channel to drivea turbine generator set. When waves act at a low frequency, mainly the oscillating water column pushes the air to pass by the air channel in a reciprocating manner so as to push the turbine power generation device to generate power; when the wave frequency is high, mainly the buoyant pendulum pushes the hydraulic cylinder to provide hydraulic oil for power generation. The buoyant pendulum mechanism and oscillating water column type wave power generation device can be used in combination with a revetment and bulwark and can also be arranged along the coastline for use, so that the utilizationrate of wave energy is improved, the coastal protection function and other functions are also taken into consideration. Due to the above reasons, the buoyant pendulum mechanism and oscillating water column type wave power generation device can be widely applied to the technical fields of coastal engineering, ocean engineering and clean energy.

Description

technical field [0001] The invention relates to a buoyancy pendulum mechanism and an oscillating water column type wave energy generating device, belonging to the technical field of new energy sources. Background technique [0002] my country has a coastline of more than 18,000 kilometers. Making full use of ocean energy resources is an important development direction of clean energy in my country. Among many ocean energy resources, wave energy has been favored due to its advantages of large resource storage, good stability, and low construction cost. growing attention. Among them, the oscillating water column wave energy conversion device has attracted more attention due to its advantages of reliable performance, simple structure, and high power generation efficiency. [0003] Although it has many advantages, the oscillating water column wave energy conversion device mainly relies on the large amplitude vibration of the water column, and the gas in the compressed air chambe...

AI Technical Summary

Problems solved by technology

When the wave frequency is low, the oscillating water column will have a "piston" resonance mode, and the water column will move up and down with a large amplitude, thus having a high power generation efficiency; but when the wave frequency is high, the oscillating water column will undergo a "sloshing" resonance Mode, at this time, the water body in the oscillating water column wave energy conversion device produces a movement similar to the sloshing of the liquid tank, and the water body mainly flows in the horizontal direction, and the gas in the compressed gas chamber is generated to drive the turbine to rotate, resulting in low device efficiency

Therefore, the traditional oscillating water column wave energy conversion device has a high wave energy capture efficiency only when the wave frequency is low

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