电站锅炉火焰检测及燃烧诊断技术

Flame Detection and Combustion Diagnosis Technique for Utility Boiler

电站锅炉的安全运行主要决定于燃烧的稳定性，实时探测燃烧火焰是否稳定，及时作出判断，对电站锅炉安全运行有着重要的实际意义。本文分析了炉膛火焰特征与火焰检测和燃烧诊断的关系，论述了火焰检测的基本原理和方法以及燃烧诊断理论和技术，并对目前火电厂燃煤锅炉应用的各种火焰检测器和燃烧诊断系统进行了分析比较，最后讨论了火焰检测及燃烧诊断技术的进一步研究方向。

Operation safety of utility boiler depends on its combustion stability to a great extent. Real-time detection of combustion flame stability and in-time judgment are important to safety operation of utility boiler. This paper analyzes relations of flame characteristics, flame detection (FD) and combustion diagnosis(CD), discusses the basic principle and methods of FD and theory and technique of CD. compares differences between several flame detectors and CD systems used in the coal-fired boilers, and finally points out the further research direction on FD and CD techniques.