Online monitoring and fault-diagnosing device of main fan for mines

Abstract

The invention discloses an online monitoring and fault-diagnosing device of a main fan for mines. An air pressure signal sensor is arranged at the air opening of the main fan and is connected with PLC through a differential pressure transmitter; an air flow temperature sensor is arranged at the air opening of the main fan and is connected with the PLC through a temperature and humidity transmitter; a motor vibration sensor is arranged on a motor of the main fan and is connected with the PLC through a vibration transmitter; a temperature sensor is arranged on a winding of a motor and is connected with the PLC; a temperature sensor is arranged in a bearing of the motor and is connected with the PLC; a signal sensor is arranged in an electrical cabinet and is connected with the PLC; a voltage and current sensor is arranged on the electrical cabinet and is connected with the PLC through an electricity quantity parameter analyzer; a valve signal sensor is arranged at a valve and is connected with the PLC; the PLC is connected with a switch; the switch is connected with a displayer and a mine safety monitoring center respectively. According to the technical scheme, the drawback that the main fan for mines in the prior art uses a singlechip for control and lacks fault diagnosis is overcome and the device is suitable to be used for monitoring various main fans in mines and giving automatic alarms in case of fault.

Description

Technical field [0001] The invention relates to an on-line monitoring and fault diagnosis device for a mine main fan. Background technique [0002] The main ventilator is the key equipment of coal mine production. The normal operation of the unit directly affects the safety production and economic benefits of the coal mine. In recent years, the main ventilator failure accidents of domestic coal mines have occurred from time to time, and some are even devastating. The establishment of a networked online monitoring and fault diagnosis system for the main ventilator that meets the needs of the coal mine is an important part of the realization of the safety of coal mine production and the stable and long-term operation of the equipment. It is also a requirement for the modern management of coal mine equipment. In the prior art, the control and processing of the main fan parameter data collection adopts self-made electronic component board and single-chip control. The signal processin...

AI Technical Summary

Problems solved by technology

In the prior art, the control and processing of the main fan parameter data acquisition adopt self-made electronic component boards and single-chip microcomputer control. The signal processing and control are easily disturbed by the outside world, and the anti-interference ability and use stability are poor. There is no fault diagnosis and fault judgment ability. The temperature signal adopts an independent temperature transmission box mode, which only converts the temperature signal into an electrical signal, and also needs to be logically controlled by other electronic components, which increases the cost

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