Modular energy conversion device and working method and application thereof

Abstract

The invention discloses a modular energy conversion device and a working method and application thereof, and belongs to the field of wave energy power generation. The modular energy conversion device comprises an actuator module, a cartridge valve module, a high-pressure energy accumulator module, a power generation module and a floater module, wherein the actuator module comprises a first-stage hollow piston rod, a second-stage hollow piston rod and a low-pressure energy accumulator, the inner circular wall of the low-pressure energy accumulator is used for arranging the first-stage hollow piston rod, the second-stage hollow piston rod is arranged in a hollow structure of the first-stage hollow piston rod in a sliding mode, the first-stage hollow piston rod is connected with the floater module and can move along with movement of the floater module, and a hydraulic motor is connected with a generator. According to the modular energy conversion device and the working method and application thereof, modular and integrated design is adopted, the modular energy conversion device can be suitable for various wave energy power generation devices, wave energy is collected through heaving movement of the floater module, the wave energy can be collected in the ascending stage and the descending stage of the floater module, and the characteristic of collecting the wave energy in a two-way mode is achieved.

Description

technical field [0001] The invention relates to a modular energy conversion device and its working method and application, belonging to the technical field of wave energy power generation. Background technique [0002] China is a big industrial country with relatively complete industrial chains of light and heavy industries and a strong demand for energy. At present and for a period of time in the future, fossil energy is still the primary choice and has a dominant position in the world's energy. The extensive use and combustion of fossil fuels has led to a series of environmental problems such as air pollution, global warming, and extreme weather. In order to reduce greenhouse gas emissions while ensuring economic development, countries around the world are actively developing renewable energy such as wind energy, solar energy, and ocean energy, and optimizing their energy supply structure. Among them, the ocean occupies 71% of the earth's surface area, and there are more ...

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Problems solved by technology

[0004] Chinese patent document CN 108240280 A discloses a "modularized ultra-large floating platform and wave energy device integrated system", which converts the heave motion of the float into the horizontal reciprocating motion of the actuator piston rod through a rack and pinion drive, and then Drive the hydraulic motor to generate electricity. The structure of the patented device is complex and the function is single. It is mainly used for large-scale wave energy generation devices. It is difficult to maintain in the later stage and the cost of maintaining operation is high. It is difficult to promote the commercialization and industrialization of wave energy generation devices.

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