Pressure-adjustable mine high- and low-pressure water energy exchange system

Abstract

The invention discloses a pressure-adjustable mine high- and low-pressure water energy exchange system. The pressure-adjustable mine high- and low-pressure water energy exchange system comprises an underground integrated control center system of a monitoring system, which comprises an industrial control computer and is connected with a hydraulic station and a three-cavity water energy exchange device. While high-pressure freezing water is subjected to pressure relief, hot water is conveyed to the ground surface from the underground part through a water energy conversion pipe, so that the potential energy exchange between the cold water and the hot water is realized; the opening degree of an electric flow adjusting valve is controlled through signals of the temperature and the flow acquired by a temperature sensor and a flow sensor, and the flow of the cold water is adjusted to be matched with end load; an underground circulating water treatment unit guarantees the backwater quality of the hot water, makes sure the quality of the water flowing through the valve, and prolongs the service life of the valve; a variable frequency water complementing system guarantees the system to stably run; and the hydraulic station is used for controlling the valve to open and close according to a certain logic sequence through an instruction of the industrial control computer, guaranteeing the system to continuously and stably run, and monitoring the status of the system equipment.

Description

technical field [0001] The invention relates to a mine cold and hot water exchange system, in particular to a mine cold and hot water exchange system which uses high-pressure cold water to push low-pressure hot water to the ground. Background technique [0002] As the mining depth of the mine increases, when the cold water of the centralized refrigeration unit on the mine ground is transported underground, the static pressure of the water has far exceeded the pressure range of the terminal air cooler. This high-low pressure exchange device can make the high-pressure cold water pressure Reduced to meet the requirements of the air cooler, and the cooling loss is extremely small. This device utilizes the principle of U-shaped tubes. The water inlet pipe and the return water pipe form a U-shaped pipe, so that high-pressure cold water can push low-pressure hot water to the ground, thereby realizing energy exchange, and there is no need to use pumps to directly transport hot water...

AI Technical Summary

Problems solved by technology

But for the entire cooling system, how to overcome the problem that the cooling load of the unit cannot match the end load; how to improve the circulation efficiency of the three-way water distributor and how to improve the phenomenon of water hammer and surge in the pipeline due to pressure fluctuations; Furthermore, in the process of hot and cold water circulation, due to some impurities in the water quality, the water quality cannot meet the requirements, thus deteriorating the working environment of various valves and shortening the service life of the valves; causing a certain degree of water leakage or circulation in the pipeline system Water loss phenomenon, if the pressure in the return water pipe changes during the hot and cold water circulation, it cannot ensure that the flow of cold water input and hot water output in the entire system is equal, so that the continuous and stable operation of the system cannot be guaranteed

Images