Full-submersible type ocean thermal energy underwater energy supply system

Abstract

The invention discloses a full-submersible type ocean thermal energy underwater energy supply system, which comprises a seawater conveying module, a power generation module and a storage and charging module which are arranged under the sea surface, wherein the seawater conveying module comprises a cold seawater pipeline, a warm seawater jet acceleration pipeline, a warm and cold seawater mixing pipeline and a hydraulic power and electric power conversion device, the power generation module adopts a closed ocean thermal energy power generation circulating device and comprises a dividing wall type evaporator, an integrated turbine generator, a dividing wall type condenser, a working medium pump and a pressure-resistant bin, an inlet of the warm seawater jet acceleration pipeline is arranged in surface warm seawater, an outlet of the warm seawater jet acceleration pipeline is connected with the dividing wall type evaporator, an inlet of the cold seawater pipeline is arranged in deep cold seawater, and the outlet of the cold seawater pipeline is connected with the dividing wall type condenser. According to the invention, electric energy supply can be autonomously completed underwater nearby for an autonomous underwater vehicle using a battery as power, and the long-term renewable and high-power energy supply requirements of the autonomous underwater vehicle in the deep and far sea can be met.

Description

technical field [0001] The invention relates to the technical field of underwater energy, in particular to an all-submersible underwater energy supply system for ocean temperature difference energy. Background technique [0002] At present, the world's ocean powers are vigorously developing new underwater equipment. Autonomous underwater vehicle is a kind of underwater monitoring and detection platform. It is a marine high-tech equipment that all marine powers are competing to develop. . At this stage, the energy required by the autonomous underwater vehicle itself mainly depends on the battery pack it carries, and the limited power source not only has great limitations on its navigation speed, endurance, working range and loading capacity of load equipment. Therefore, seeking a sustainable, safe and reliable energy supply solution is a problem that must be solved in the development of autonomous underwater vehicles. [0003] At present, there are four energy supply metho...

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Problems solved by technology

Among them, the recovery and charging method has a long cycle, high failure risk, and high operating costs; although the battery life of self-contained fuel power supply has been improved, it is indeed at the expense of the size of the underwater vehicle, and it still needs to be recycled regularly for fuel replenishment; The power supply of the cable shore station is limited by the length of the submarine cable, so it is difficult to apply to the deep sea energy supply; although the traditional renewable energy power supply methods based on solar energy, offshore wind energy, and wave energy can realize unmanned deep sea underwater energy supply, offshore wind energy , Offshore solar and wave energy power generation platforms need to be located above the sea surface, it is difficult to directly and covertly supply energy for underwater autonomous vehicles underwater and the energy system is easily exposed

The traditional energy supply method that uses solid-liquid phase change temperature difference to power supply with the body, although there is no risk of exposure, still faces problems such as short power supply time, long regeneration time, and low output power.

In the existing conventional ocean temperature difference power generation device, the pipeline needs to consume a lot of pump work in the process of lifting and transporting deep cold seawater, and the generated electric energy needs to be used for the operation of the seawater lifting pump, resulting in excessive self-consumption of the system and reducing The net output power of the thermoelectric power generation system

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