Wellhead anti-freezing system based on large temperature difference heat exchange technology and operation control method

Abstract

The invention provides a wellhead anti-freezing system based on a large temperature difference heat exchange technology and an operation control method thereof. The wellhead anti-freezing system comprises a heat pump unit, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a first radiator, a central controller and a first temperature sensor, wherein the heat pump unit, the second heat exchanger, the third heat exchanger and the fourth heat exchanger are connected through pipelines; and under the control of the central controller, heat can be continuously supplied to the first radiator, and the first radiator continuously supplies heat to a mine wellhead, so that the anti-freezing effect of the wellhead is realized. Compared with the prior art, the absorption type heat pump unit and the two heat exchangers are arranged, four-stage gradient utilization of one-network heating water is achieved, the temperature difference between supply water and return water of the one-network heating water is increased, power consumption of a water pump is reduced, and the low-temperature waste heat recycling capacity of the heat source side is improved; and heat supply load adjustment is achieved through a waterway adjusting valve and a peak heater.

Description

technical field [0001] The invention relates to a wellhead antifreeze system and an operation control method based on a large temperature difference heat exchange technology. Background technique [0002] The antifreeze facilities at the air intake wellhead of the mine are very important for all underground mining enterprises in northern my country. Once the air intake wellhead or shaft freezes, it may cause serious injury to personnel and equipment, and even lead to mine production stagnation. . my country's "Coal Mine Safety Regulations" stipulates that the air temperature (dry bulb temperature) below the air inlet wellhead must be above 2°C. The mainstream heat source of mine antifreeze system in my country uses coal-fired boilers to provide steam or hot water, and heats the air temperature at the wellhead through tube-fin heat exchangers. Recently, with the deepening of energy-saving awareness, the wellhead air heater has gradually replaced the traditional convection tu...

AI Technical Summary

Problems solved by technology

Recently, with the deepening of energy-saving awareness, the wellhead air heater has gradually replaced the traditional heat convection tube-fin heater with a fan-forced air circulation heat exchanger, making it possible to carry out energy-saving transformation on the heat source side.

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