Mining cold accumulation type heat exchanger based on freezing shaft sinking and using method

Abstract

The invention discloses a mining cold accumulation type heat exchanger based on freezing shaft sinking and a using method. The mining cold accumulation type heat exchanger comprises a cold accumulation tank, and two types of heat exchange rectangular coil pipes (low-temperature saline water and chilled water flow in the heat exchange rectangular coil pipes respectively) and cold accumulation water are arranged in the cold accumulation tank. And the two types of heat exchange rectangular coil pipes are respectively connected in parallel. A heat preservation layer is arranged outside the cold storage tank, and a heat exchanger protection shell is arranged outside the heat preservation layer. The upper end of the heat exchanger protection shell is provided with a low-temperature saline water inlet and outlet and a chilled water inlet and outlet. The low-temperature brine inlet and outlet of the heat exchanger are connected with low-temperature brine from a refrigeration station; and a chilled water inlet and a chilled water outlet of the heat exchanger are connected with chilled water required by a mining air cooler. According to the invention, low-temperature saline water during freezing shaft sinking construction is utilized, and cold storage water in the cold storage tank is taken as a carrier, so that chilled water required by the mining air cooler is indirectly cooled. The cooling capacity of the low-temperature saline water of the refrigeration station during freezing shaft sinking construction can be fully utilized, the mine cooling cost is reduced, and high economic benefits and practical values are achieved.

Description

technical field [0001] The invention relates to the technical field of cold storage heat exchangers for mines, in particular to a cold storage heat exchanger for mines based on freezing sinking and a use method thereof. Background technique [0002] With the extension of coal mine mining depth, the temperature of surrounding rock continues to rise, making the temperature of mine roadway and mining face too high, and the degree of heat damage is becoming more and more serious. At present, about 90% of my country's coal resources are mined by building wells. In recent years, coal and metal mineral resources buried at a depth of about 1,000 meters in the eastern and western regions have been developed using a 1,000-meter vertical shaft shaft. At present, the coal mines mining deep topsoil in my country mainly choose the freezing sinking method as the well construction technology. The construction feature of the freeze-sinking method is that before the wellbore is drilled, seve...

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Problems solved by technology

Although the low-temperature brine produced by the refrigeration station is a good cooling source during freezing drilling construction, according to the current patents, low-temperature brine is rarely directly used as a cooling source of freezing water during freezing drilling construction, and it has not been fully utilized. Site Conditions During Frozen Sinking Construction

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