Intelligent coal mine local ventilation system

Abstract

The invention discloses an intelligent coal mine local ventilation system which comprises a mining flame-proof type two-circuit feeder switch, two passageway type anti-explosion frequency converters and two local ventilation machines. The mining flame-proof type two-circuit feeder switch is connected with an information collecting module under a coal mine, supplies power for the two anti-explosion frequency converters respectively and controls the two anti-explosion frequency converters to work. The two anti-explosion frequency converters are connected with the two local ventilation machines respectively, and air flow automatic switching devices are further arranged at air outlets of the two local ventilation machines. Under the control of the mining flame-proof type intelligent two-circuit feeder switch, rotation speed of a fan is automatically adjusted, air is supplied according to needs, gas is intelligently exhausted, energy is saved, consumption is reduced, disasters are prevented, and safety and reliability of the local ventilation system are improved.

Description

technical field [0001] The invention relates to a coal mine local ventilation device, in particular to an intelligent coal mine local ventilation system. Background technique [0002] At present, traditional coal mine local ventilator products cannot be controlled by frequency conversion, and the ventilation mode is "one wind blowing". When the mining face changes, the air supply volume of the local ventilator cannot be changed. When the gas is prominent in the mining face, the air volume cannot be increased, which is likely to cause safety accidents; when the mining volume of the working face is reduced, the air volume will be excessive, wasting electric energy. At the same time, the switch between the main and standby fans needs to be operated manually, and automatic control and unattended operation cannot be realized. [0003] Most of the switching between the main and standby fans uses two independent air ducts, or installs switching gates at the connection between each...

AI Technical Summary

Problems solved by technology

[0002] At present, traditional coal mine local fan products cannot be controlled by frequency conversion, and the ventilation method is "one wind blowing". When the mining face changes, the air supply volume of the local fan cannot be changed.

When the gas is prominent in the mining face, the air volume cannot be increased, which may easily cause safety accidents; when the mining volume of the working face is reduced, the air volume will be excessive, wasting electric energy

At the same time, the switch between the main and standby fans needs to be operated manually, and automatic control and unattended operation cannot be realized.

[0003] Most of the switching between the main and standby fans uses two independent air ducts, or installs switching gates at the connection between each fan and the duct. This structure not only takes up a lot of space, but also requires high investment costs, and requires manual operation, resulting in low efficiency. , Switching is slow, which is not conducive to the reliability of mine safety

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