Method and device for desalting sea water and generating electricity by utilizing tidal energy drive

Abstract

The invention relates to a method and device for desalting sea water and generating electricity by utilizing tidal energy drive. The high sea water in the sea when in rising tide is utilized to impact a water turbine to rotate in the process of flowing into an impounding reservoir, or the high sea water in the impounding reservoir when in ebbing is utilized to impact the water turbine to rotate in the process of flowing into the sea; the water turbine drives a high-pressure pump to operate to generate high-pressure water which is desalted through a reverse osmosis membrane module; the high-pressure concentrated sea water discharged from the reverse osmosis membrane module impacts a turbo machine to rotate; the turbo machine drives a generator to rotate to generate electric energy, thus realizing the comprehensive utilization and conversion of the tide energy; the effluents in the process of energy utilization and conversion do not cause pollution, are clean and environmental-friendly;the system does not need additionally provided external power, and is low in operation cost; and the tide energy is a renewable energy source, and has the advantages of sustainable development, better social benefits and application value.

Description

technical field [0001] The invention relates to a method and device for seawater desalination and power generation, in particular to a method and device for seawater desalination and power generation driven by tidal energy. Background technique [0002] Water is an important substance for the survival of human beings and all living things. The earth has sufficient water resources. The total amount of water reaches 1.4 billion cubic kilometers. However, there are very few fresh water resources that can be used by human beings, and the reserves only account for the total amount of water in the world. 2.53% of the total, and 68.7% of the fresh water exists in the form of solid glaciers, which are difficult to exploit and utilize. The only fresh water that humans can directly use is groundwater, lake fresh water, and river bed water. The sum of these three accounts for about 0.77% of the total water on the earth. , leading to serious water shortage in more than 80 countries and ...

AI Technical Summary

Problems solved by technology

A typical method of gathering ocean energy is wave energy or tidal energy, which uses tapered channels to send seawater to a certain height to form a potential difference. However, using this method to increase the height of seawater is limited, so only relying on flow The method of improving the potential energy of seawater by the channel structure is far from enough, because the pressure difference is not large, its efficiency is often relatively low, and it is not easy to use

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