A medium-speed coal mill operation safety online monitoring and early warning system and method

Abstract

The invention discloses an on-line monitoring and early warning system and method for the operation safety of a medium-speed coal mill. Sensors, coal mill body vibration sensor, coal mill outlet air pressure sensor, coal mill outlet temperature sensor and data processing center, stone coal level sensor, coal mill base vibration sensor, coal mill inlet air pressure sensor and The air temperature sensor at the entrance of the coal mill, the real-time operation parameter acquisition system of the coal mill, the air pressure sensor at the exit of the coal mill, the temperature sensor at the exit of the coal mill, and the vibration sensor of the coal mill body are all connected to the data processing center. The system and method can On-line monitoring and early warning of the operation safety of medium-speed coal mills.

Description

technical field [0001] The invention relates to an on-line monitoring and early warning system and method, in particular to an on-line monitoring and early warning system and method for operating safety of a medium-speed coal mill. Background technique [0002] At present, the coal quality of thermal power plants is complex and changeable, which puts forward higher requirements for the safety of coal mill operation. The common operation safety risks of medium-speed coal mills are mainly the abnormal vibration of the coal mill, the blockage of the coal mill, the deflagration of the powder pipe of the coal mill, and the backfilling of the pebble coal bunker into the pulverizer after the silo is full, causing the pebble coal scraper of the pulverizer to break. Even the coal mill is blocked and so on. Because the thermal power plant's monitoring methods for the common operation safety risks of the above-mentioned medium-speed coal mills are mainly intermittent manual on-site in...

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Problems solved by technology

There is a certain monitoring vacuum period in the intermittent manual on-site inspection, and the time is long. Usually, the common safety risks of medium-speed coal mills cannot be discovered and warned in time, and can only be responded to after the safety risks have occurred. Dial parameter monitoring Because the operator needs to monitor and adjust all the operating parameters of the entire thermal power unit at all times, the amount of monitoring and operation is very large, it is difficult to realize timely discovery and early warning of common safety risks of medium-speed coal mills, and some safety risks only Can only be monitored on the spot

The safety of the medium-speed coal mill plays a very important role in the operation safety and stability of the entire power plant unit, but there is no relatively mature online monitoring and early warning system for the operation safety of the medium-speed coal mill in China

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