Comprehensive anti-scaling system for mine cooling engineering

Abstract

A comprehensive anti-scaling system for a mine cooling engineering sequentially comprises a multistage multi-channel filter, a heat exchange tube section and a physical descaling device from the upstream of a water route to the downstream of the water route, wherein the multistage multi-channel filter is used for filtering large particles, the heat exchange tube section for recovering heat energy of mine water is provided with a heat exchanger, and the physical descaling device is parallelly connected between two ends of the heat exchange tube section. The physical descaling device comprises a ball catching device, a ball transmitting tube and a transmitting water pump, the ball catching device is arranged at the water outlet tube end of the heat exchange tube section and used for recovering cleaning small balls passing the heat exchange tube section, the recovered cleaning small balls are collectively stored in a small ball collector, one end of the ball transmitting tube is connected at the water inlet tube end of the heat exchange tube section, the other end of the ball transmitting tube is connected with the small ball collector, so that small balls in the small ball collector pass and enter the water inlet tube end of the heat exchange tube section, the transmitting water pump is connected with a circulating pipeline through two groups of water-intake paths and two groups of water return paths, the cleaning small balls are washed into the heat exchange tube section by the aid of high-pressure and high-speed water flow according to an angle to form turbulent flow, so that the cleaning small balls rapidly collide with the tube wall of the heat exchange tube section, and descaling efficiency is improved.

Description

Technical field [0001] The invention relates to the field of comprehensive utilization of mining engineering and geothermal engineering, in particular to a comprehensive anti-scaling system for mine cooling engineering. Background technique [0002] The scaling problem is a common problem in the circulating water system of mine cooling and mine geothermal utilization engineering. According to research, the geothermal systems of Japan, Iceland, Tibet, Beijing, Tianjin, Henan, Liaoning and other countries and regions of China have different degrees of fouling. More than 90% of heat exchangers have different degrees of fouling. The increase in the amount of fouling directly leads to a decrease in the heat transfer coefficient of the pipeline. If the fouling is 0.5mm, the heat transfer coefficient will drop by 30%, and if the fouling is 1mm, it will drop by 50%. Steinhagen made a rough estimate of the losses caused by dirt in the industrial sectors of developed countries in 1992. Th...

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Problems solved by technology

At present, chemical methods are used in the industry for descaling, but the chemical substances used for descaling are often acidic, and at the same time, there will be a certain degree of corrosion on the components of the pipeline itself and the sealing ring of the pipeline, which reduces the wear and tear of the pipeline. service life

In addition, although there are some physical systems or equipment for descaling pipelines, their descaling efficiency is not high, the amount of residual dirt is large, the structure of the descaling system is complicated, the control and operation procedures are troublesome, and the maintenance cost of equipment is high.

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