Wave-tide direct-driven water-pumping pressure-accumulation sea water desalination machine

Abstract

The invention provides a device for performing sea water desalination by using waves and tides to directly drive a water-pumping pressure-accumulation pump. The device consists of a sea water desalination system and a wave-tide direct-driven water-pumping pressure-accumulation device. A vane wing unit captures water to ensure that a turbine main shaft rotates along a fixed direction, rotational mechanical energy can be directly transferred to a water-pumping screw, sea water is sucked into a sea water pipeline to accumulate pressure continuously, and finally fresh water is generated through a reverse osmosis system. The sea water desalination machine disclosed by the invention makes use of the advantage that a wave-tide turbine rotates along a fixed direction, and a water-pumping screw pump matched with the wave-tide turbine is designed, so that the mechanical energy can be directly transferred to reduce intermediate energy consumption; on the other hand, an accumulator and a valve control type energy recovery device are used for performing flexible treatment on the water pressure of the sea water desalination system, so that the desalination pressure is sufficient while a reverse osmosis membrane is protected. The device provided by the invention can solve the problem of lack of fresh water of ships, naval vessels and offshore islands, and can meet requirements for energy conservation and sustainability.

Description

technical field [0001] The invention relates to a seawater desalination machine, in particular to a reverse osmosis seawater desalination device which directly uses wave energy to pump water and store pressure. Background technique [0002] Water is the source of life and a precious and irreplaceable natural resource for human beings. As an open source technology, seawater desalination can increase the total amount of water resources. Seawater desalination methods currently used in the world mainly include multi-stage flash evaporation, multi-effect evaporation and reverse osmosis. Among them, reverse osmosis technology has the advantages of less investment, convenient operation, and short construction period, and has been widely used in the world. [0003] For ocean-going ships, using traditional fossil fuels (coal, oil) to solve the energy problem of seawater desalination will cause huge transportation burden and financial expenditure, which is energy-consuming and unecono...

AI Technical Summary

Problems solved by technology

However, these explorations have not been applied on a large scale, and seawater desalination machines equipped on ships are still generally powered by diesel engines.

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