Anti-freezing system and method for well mouth of auxiliary well of mine

Abstract

The invention discloses an anti-freezing system and method for a well mouth of an auxiliary well of a mine. The anti-freezing system and method are used for the mine. The mine comprises a main well and the auxiliary well communicating with the main well. The main well is provided with a draught fan. The auxiliary well supplies air to the main well under the effect of the draught fan. The anti-freezing system for the well mouth of the auxiliary well of the mine comprises a well mouth room, heat exchangers and hot air curtains. The well mouth room is arranged at the well mouth of the auxiliary well, and the well mouth is sealed in the well mouth room. The heat exchangers conduct heat exchange by means of geothermal water in the main well. The hot air curtains are arranged at the top of a room door of the well mouth room, and air curtains used for preventing air exchange from being conducted on the room door are formed. The well mouth room is in a sealed state, negative pressure is formed under the effect of the draught fan, and hot air is delivered into the well mouth through inlets of the heat exchangers. According to the anti-freezing system and method for the well mouth of the auxiliary well of the mine, the geothermal water is used as a heat source, fire coal is not needed, energy is saved, and environmental friendliness is achieved; and the heat exchangers are used for supplying hot air, negative pressure is achieved in the well mouth room, the effect that hot air is provided through the auxiliary well is guaranteed, scalding is prevented, and safety and reliability are guaranteed.

Description

technical field [0001] The invention relates to antifreeze in mines, in particular to an antifreeze system and a method for antifreezing the wellhead of auxiliary shafts in mines. Background technique [0002] At present, with the development of my country's economy and society, the demand for energy is increasing, and coal, as the main body of my country's primary energy consumption, has a particularly large demand. In 2009, my country's raw coal consumption was 3.05 billion tons, accounting for 68% of primary energy. Therefore, coal mine safety work has always been the top priority of my country's national safety work. A mine usually includes a main shaft and an auxiliary shaft. As the main passage for pedestrians and unloading materials, the auxiliary shaft is very important in the safety of coal mines. In winter, the wellheads of most mines in northern my country will form ice walks in the wellheads due to the cold, which poses a serious threat to the lives of workers ...

AI Technical Summary

Problems solved by technology

Due to the characteristics of openness, no noise, and large load of wellhead heating, the use of steam for antifreeze heating at the wellhead can easily cause energy waste. Taking Xuzhou as an example, a mine with an annual output of 2.5 million tons is only one part of the antifreeze heating at the wellhead. One heating season needs to consume more than 7000 tons of coal

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