Online monitoring and early warning system and method for operation safety of medium-speed coal mill

Abstract

The invention discloses an online monitoring and early warning system and method for the operation safety of a medium-speed coal mill. The online monitoring and early warning system for the operationsafety of the medium-speed coal mill comprises a pebble coal level sensor, a base vibration sensor of the coal mill, an inlet air pressure sensor of the coal mill, an inlet air temperature sensor of the coal mill, a body vibration sensor of the coal mill, an outlet air pressure sensor of the coal mill, an outlet temperature sensor of the coal mill and a data processing center, wherein the pebble coal level sensor, the base vibration sensor of the coal mill, the inlet air pressure sensor of the coal mill, the inlet air temperature sensor of the coal mill, a real-time operation parameter acquisition system of the coal mill, the outlet air pressure sensor of the coal mill, the outlet temperature sensor of the coal mill and the body vibration sensor of the coal mill are all connected with thedata processing center. The system and the method can be used for carrying out online monitoring and early warning on the operation safety of the medium-speed coal mill.

Description

technical field [0001] The invention relates to an online monitoring and early warning system and method, in particular to an online monitoring and early warning system and method for the operation safety of a medium-speed coal mill. Background technique [0002] At present, the quality of coal used in 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 coal pulverizer pipe, and the pouring of the pebble coal bunker into the coal mill after the coal bunker is full, resulting in the breakage of the pebble coal scraper of the coal mill Even the coal mill is blocked. The monitoring methods for the common operation safety risks of the above-mentioned medium-speed coal mills in thermal power plants are mainly intermittent manual on-site insp...

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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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