Mine air quality composite index and ventilation energy-saving linkage system

Abstract

A mine air quality composite index and ventilation energy-saving linkage system comprises a carbon monoxide detector, a hydrogen sulfide transmitter, a sulfur dioxide detector, a nitrogen dioxide transmitter, a dust detector, a programmable logic controller (PLC), a main fan, a main fan frequency converter, an industrial computer and a local area network, wherein the carbon monoxide detector, the hydrogen sulfide transmitter, the sulfur dioxide detector, the nitrogen dioxide transmitter and the dust detector are connected with the input end of the PLC, the output end of the PLC is connected with the main fan frequency converter, the main fan frequency converter is connected with the main fan, the PLC is bidirectionally connected with the industrial computer, and the industrial computer is connected with the local area network. according to the invention, a ventilation effect of the underground mining surface (or main working middle section) in a nonferrous mine is improved, and the underground working environment of workers is improved. A mine ventilation system time-interval seasonal frequency-conversion energy-saving control system is established to reduce the ventilation energy consumption of an underground ventilation system in the nonferrous metal mine by more than 14%.

Description

technical field [0001] The invention relates to the field of mining, in particular to a mine air quality comprehensive index and ventilation energy-saving linkage system. Background technique [0002] At present, most of the non-ferrous metal mines in our country have entered the middle and deep mining. As the mining depth increases, ventilation becomes difficult. The power of the main and auxiliary fans of the ventilation system is increasing, and the ventilation cost is getting higher and higher. According to our institute's survey on the ventilation systems of some non-ferrous metal mines in Hunan, the power consumption of each mine ventilation system accounts for 17% to 30% of the total underground power consumption, and the proportion has shown an increasing trend in recent years. At present, some mine underground ventilation systems use frequency conversion technology to reduce the speed of the main fan. Although the power consumption of the ventilation system is reduc...

AI Technical Summary

Problems solved by technology

At present, some mine underground ventilation systems use frequency conversion technology to reduce the speed of the main fan. Although the power consumption of the ventilation system is reduced and the ventilation cost is reduced, the total air supply volume of the ventilation system is also reduced, which is prone to high levels of toxic and harmful substances in the air of some mining faces. , it is difficult to remove toxic gas, and the poor air quality of the mining face affects the safety of workers

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