单色火焰图象处理技术在锅炉燃烧监控中的应用研究  

STUDY ON APPLICATION OF MONOCHROMATIC FLAME IMAGE PROCESSING TECHNIQUE IN COMBUSTION MONITORING AND CONTROL OF BOILERS

作　　者：周怀春[1] 娄新生[1] 尹鹤龄[1] 邓元凯[2] 顾一之 孙国俊[2] 

机构地区：[1]华中理工大学煤燃烧国家重点实验室 [2]甘肃省电力试验研究所

出　　处：《电力系统自动化》1996年第10期18-22,共5页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目

摘　　要：首先分析了火焰图象处理中单色性选择的意义，然后重点介绍了在２００ＭＷ电站锅炉上实现的炉膛燃烧二维温度分布检测的试验研究。结果显示，即使炉内燃烧工况比较平稳，燃烧温度的波动幅度也达到１８０Ｋ；燃烧温度随燃料调节呈现相应变化；过热器壁温及烟气含氧量也与燃烧温度明显关联。最后简要介绍了在此基础上构成的一种炉膛燃烧三维温度分布检测方法，以及将反映炉膛辐射能量的图象灰度作为中间被调量构成的一种新型燃料控制方式，展望了这几种新方法在电站锅炉上的广阔的应用前景。The advantage of monochromatic flame image processing is discussed first, then the experiments on the application of this technique in the measurement of two dimensional temperature distribution of a 200 MW utility boiler are described. The main results are (1) even if the combustion state in the furnace is very steady, the fluctuation of the combustion temperature reached up to 1800 K, (2) the combustion temperature varied with the fuel adjustment process, and (3) the temperatures on the surface of the superheaters and of the flue gases are associated closely with the combustion temperature. A measurement method of three dimensional temperature distribution in utility furnaces based on this technique and a new two loop fuel control strategy, which takes the average grey scale of the flame radiative images as an intermediate controlled parameter, are described briefly, and the application potential of these new methods are discussed.

关 键 词：锅炉 燃烧监控 图象处理 

分 类 号：TK223.61[动力工程及工程热物理—动力机械及工程]