Novel energy-gathering duct type self-variable-pitch direct-drive wave power generation device

Abstract

The invention provides a novel energy-gathering duct type self-variable-pitch direct-drive wave power generation device. The device comprises a floating body floating on the sea surface and an energy-gathering conversion mechanism located underwater. The energy-gathering conversion mechanism comprises an outer cylinder (a cylinder with the two ends penetrating through), an inner column (located at the circle center axis of the outer cylinder and kept relatively fixed with the outer cylinder), a power generator (arranged in the inner column) and a passive self-variable-pitch turbine (arranged on the inner column, the passive self-variable-pitch turbine is connected with a rotor of the power generator, an impeller is arranged around the inner column, and a rotating shaft of the impeller coincides with a center shaft). The energy-gathering conversion mechanism is driven by the wave energy to generate displacement relative to fluid so as to drive the impeller to rotate, and therefore the rotor is driven to rotate, and power generation through the wave energy is achieved. The passive self-variable-pitch turbine can automatically adjust the pitch angle of blades in the impeller to adapt to the change of the flow direction of seawater when the energy-gathering conversion mechanism converts the movement direction, so that the rotation direction of the impeller is kept unchanged, and the wave energy comprises kinetic energy of standing waves in the outer cylinder and potential energy of sea surface traveling waves.

Description

technical field [0001] The present application relates to the technical field of ocean power generation, in particular to a novel energy-gathering ducted self-variable-pitch direct-drive wave power generation device. Background technique [0002] According to the working environment of wave energy power supply equipment in the South China Sea and the characteristics of utilizing wave energy, the following key issues and technical difficulties need to be solved: [0003] (1) Anti-corrosion and anti-fouling of the overall structure in the marine environment, especially the salt corrosion, electrochemical corrosion, and marine organism adhesion of metal parts in the seawater immersion environment. [0004] (2) Design and manufacture of energy-gathering carriers, energy conversion turbines and underwater direct-drive generators for efficiently harvesting wave energy. The particle velocity of seawater formed by standing wave movement of wave energy in the South my country Sea is...

AI Technical Summary

Problems solved by technology

However, this method increases the weight and moment of inertia of the turbine, affects the start-up performance of the turbine, and at the same time puts forward higher requirements for the bearing, and increases the cost

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