Thermal power plant powder conveying auger spontaneous combustion detection fire extinguishing system and working method thereof

Abstract

The invention provides a spontaneous combustion detection and fire extinguishing system for a powder conveying auger of a thermal power plant, and belongs to the technical field of thermal power plant safety protection. Comprising a powder conveying auger box body, a plurality of auger monitoring sections are arranged on the powder conveying auger box body in the axial direction, each monitoring section is provided with a temperature detection module, and each key part of the powder conveying auger can be comprehensively and meticulously covered by adopting a grading response mechanism. Compared with a traditional single monitoring point or limited monitoring range, the system can more accurately capture temperature changes of different positions of the powder conveying auger, potential overheating and spontaneous combustion hidden dangers can be found in time, and the safety of the thermal power plant powder conveying system is greatly improved. When the temperature detection module monitors abnormal temperature data, the intelligent control module can quickly receive and process the information and immediately control the composite fire extinguishing module to start fire extinguishing operation according to preset logic and algorithm, so that the time interval from fire discovering to fire extinguishing is greatly shortened, and further spreading and expansion of the fire are effectively avoided.

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