本文从三基色测温原理出发,讨论了它在火焰温度场测量应用中受到的限制因素.通过对火焰模型和CCD光谱响应的简化,推导出了便于应用的测温公式.提出了通过系统标定和三种比色温度的相关性校正测量误差的方法.利用设计的一套测量系统,对某200 MW的锅炉的温度场分布进行了测量,并与双色温度计的测量数据进行了比较.结果表明,上述方法简单可靠、测量误差小于5%,可满足系统燃烧诊断和实时测控的目的,工程上有一定的应用前景.
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