Wave-energy-based seawater desalination system

Abstract

The invention belongs to the field of seawater desalination, and specifically discloses a wave-energy-based seawater desalination system. The system comprises a wave energy conversion device and a seawater desalination device, wherein the wave energy conversion device comprises a first buoy, a second buoy, a third buoy and a fourth buoy which are connected in sequence by transmission bearings, andfurther comprises four sets of supercharging units with the same structure; each set of the supercharging units comprises a piston, a piston cylinder and a hydraulic oil cylinder which are connectedin sequence; the bottom of each hydraulic oil cylinder is an elastic diaphragm; the seawater desalination device comprises four sets of seawater desalination units with the same structure; each set ofthe seawater desalination units is connected with the corresponding supercharging units; pressure applied by the supercharging units enables seawater to be filtered through a reverse osmosis membraneso as to obtain fresh water. According to the seawater desalination system disclosed by the invention, the structure and layout of the wave energy conversion device are optimized, so that the situation that the stretching and compression of the pistons occur in pairs during the change of the angular displacement of one buoy can be ensured, thereby greatly improving the ability to absorb and transform wave energy.

Description

technical field [0001] The invention belongs to the field of seawater desalination, and more specifically relates to a seawater desalination system based on wave energy. Background technique [0002] The ocean contains huge renewable and clean energy and resources, how to rationally develop and utilize marine energy and resources is an important link to achieve sustainable development. Among them, the use of wave energy to desalinate seawater can not only effectively solve the water resource crisis, but also make full use of renewable resources at sea, which has the advantages of economy, environmental protection, and sustainability. [0003] Seawater desalination methods include distillation, reverse osmosis, crystallization, solvent extraction, and ion exchange, among which reverse osmosis refers to applying external pressure on one side of a semi-permeable membrane so that water passes through the semi-permeable membrane while other substances are absorbed. trapped on th...

AI Technical Summary

Problems solved by technology

This invention can directly and efficiently convert wave energy into hydraulic energy for pretreatment and desalination of seawater, but it needs to build a working platform on the sea surface, and the working platform needs to be fixed to the seabed with anchor cables, the installation is more complicated and the cost is higher

CN202926515U discloses a floating body type wave energy seawater desalination system, which includes a wave energy absorption system, a hydraulic system and a seawater desalination system. The hydraulic cylinder and high-pressure oil pipe are connected to the high-pressure oil tank of the hydraulic system, and the pressure-stabilizing accumulator is installed on the high-pressure oil tank. The utility model is mainly composed of a floating body and a hydraulic cylinder to absorb wave energy, resulting in weak wave energy absorption capacity

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