Ice-melting system for mine

Abstract

The invention discloses an ice-melting system for a mine, comprising a low-temperature cold water tank, an ice melting tank, a water distributor, an ice delivering pipe, a circulating water returning pipe and a low-temperature cold water outlet pipe, wherein the ice melting tank is arranged above the low-temperature cold water tank; water outlet holes are uniformly formed in the bottom of the ice melting tank; the water distributor is arranged on the upper part of the ice melting tank; water distributing holes are uniformly formed in the bottom of the water distributor; the ice delivering pipe is located above the water distributor, and enters the ice melting tank by passing through a through hole reserved in the water distributor; the circulating water returning pipe is located above the water distributor, and enters the water distributor through a through hole reserved in a detachable cover plate at the upper part of the water distributor; the low-temperature cold water tank is communicated with a water inlet pipe of cooling equipment of a mine ice cooling system through the low-temperature cold water outlet pipe, the circulating water returning pipe is communicated with a water returning pipe of the cooling equipment of the mine ice cooling system; the ice melting tank is connected with a sprinkling can, and the sprinkling can is filled with a supersaturated potassium chloride solution. The ice-melting system for the mine can be used for quickly acquiring a saline solution with the temperature being lower than 0 DEG C.

Description

technical field [0001] The invention relates to a device for preparing low-temperature salt solution, in particular to an ice-melting system for mines. Background technique [0002] With the increase of mine mining depth, the formation temperature is getting higher and higher, resulting in higher and higher temperature of underground mining working face, more and more serious heat damage, which seriously endangers the health of workers and affects labor production efficiency. It has been proved by practice that the most effective technology to prevent and control mine heat damage is to implement artificial refrigeration and cooling technology. Artificial refrigeration cooling technology mainly includes artificial cooling water cooling technology, artificial ice cooling technology. Under the current technical conditions, the artificial cooling water cooling technology can provide cold water at a minimum of 3°C (the refrigerant is fresh water); while the artificial ice coolin...

AI Technical Summary

Problems solved by technology

There are following deficiencies in this ice-melting pool: the first is that the water temperature in the cold water chamber is always affected by the high-temperature return water entering the ice-melting pool

Because of the temperature difference between the cold and hot water, natural convection will occur between the ice-melting chamber and the cold water chamber, causing the water temperature in the cold water chamber to be unstable, and even the cold water temperature cannot reach the expected near 0°C

The second is that after the high-temperature circulating return water enters the ice-melting chamber, the water flow rate quickly approaches 0, and the ice and water suspended in the ice-melting chamber basically only rely on molecular diffusion and natural convection for cooling, and the cooling intensity is relatively small. , the cooling efficiency is low, and the melting speed of crushed ice is slow

Third, the journey of the high-temperature return water entering the ice-melting chamber is uncertain, and the contact time with the crushed ice suspended in the ice-melting chamber cannot be guaranteed, so that the temperature drop of the high-temperature return water from the ice-melting chamber to the cold water chamber cannot be guaranteed.

Although this ice-melting pool has a backwater chamber compared with the previous ice-melting pool, the water in the three pools is always mixed together

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