Intelligent local fan workstation

Abstract

The invention relates to an intelligent local fan workstation which comprises an external power supply, a rectifying device, a control device, an inverter and a local fan. The rectifying device, the control device and the inverter are electrically connected in sequence, and the output end of the inverter is connected with a local fan; the rectifying device is electrically connected with an external power supply to supply power to the whole system; and one end of the battery unit is electrically connected with the control device, the other end of the battery unit is connected to a line between the inverter and the rectifying device, and the line between the connecting part and the rectifying device and the line between the connecting part and the inverter are controlled by a switch. According to the intelligent local fan work station, the local fan can accurately provide the air supply amount according to the needed air amount set by the working face, meanwhile, the intelligent local fan work station has the accurate compensation function, the problem that in the prior art, a large horse pulls a small car in a local fan of a driving working face is solved, and waste is avoided; the intelligent local fan workstation is ingenious in structural design, safe, reliable and suitable for being popularized and used in coal mine underground tunneling workplaces.

Description

Technical field [0001] The present invention relates to the field of mine ventilation technology, specifically to an intelligent bureau fan workstation. Background [0002] Since the coal mine underground boring workplace is gushing out a large amount of gas at every moment, in order to ensure safe production, the coal mine safety regulations have made strict requirements for the installation and operation of the excavation surface fan, requiring that each boring face must be installed with two bureau fans with the same power model to supply the working surface with air, two bureau fans are used and prepared, and each bureau fan is composed of two fans with the same power model and the opposite direction of rotation. The power of the cyclone is configured according to the maximum wind pressure and maximum air supply of the boring working surface plus a certain safety margin, and the maximum wind pressure and maximum air supply of the boring working surface are at the farthest dis...

AI Technical Summary

Problems solved by technology

[0002] Because a large amount of gas is gushing out of the coal mine excavation work place all the time, in order to ensure safe production, the coal mine safety regulations have made strict requirements on the installation and operation of the partial fan on the excavation face, requiring that each excavation face must be installed with two Local fans with the same power type supply air to the working face. Two local fans are used and the other is standby. Each local fan is composed of two fans with the same power model and opposite rotation directions. The maximum wind pressure and maximum air supply volume of the excavation face are configured with a certain safety margin, while the maximum wind pressure and maximum air supply volume of the excavation face are all at the time when the excavation is the longest distance, that is, when the excavation face is completed. The local fans of the working face all use three-phase asynchronous non-speed-adjustable power frequency motors, which means that the partial fans of the excavation working face are always working in the state of "big horse-drawn carts", resulting in great waste

In addition, when there is an accident and power failure in the authority fan power supply, it will stop running, which will cause the accumulation of gas in the excavation face or even exceed the limit, causing safety hazards

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