【摘要】 为获取煤粉炉内详细而有效的检测参数,通过布置在某300MW电厂锅炉炉本体上的16支CCD(Charge Coupled Device,电荷耦合器件)火焰探头从不同高度、不同层面实时拍摄炉内火焰图像,经图像处理技术处理后得到反映炉内多个区域燃烧强度的多层辐射能信号。通过对一次炉膛灭火事故的分析表明,炉内多层辐射能事故响应时间更迅速,提供的炉内燃烧工况信息更全面。在查明灭火事故的起始位置及发展过程的基础上,采取了相关措施后,该炉至今未发生类似灭火事故。多层辐射能检测信号可作为一个有效工具应用于大型燃煤电厂锅炉的燃烧诊断中。更多还原

【Abstract】 The combustion flame images were captured by 16 CCD flame probes installed in the furnace of 300 MW utility boiler with different height and level to obtain the detailed and valid detection parameters inside the boiler. The Multiple Radiant Energy Signals (MRES) are acquired through image processing technology. The analysis of a boiler flame-extinction incident shows that MRES reflects the incident more quickly and comprehensively than other parameters such as negative pressure, oxygen content etc. In addition, MRES can help to locate the original incident and find out the development process. The similar incident has not happened after taking some countermeasures. MRES can play an important role in the combustion diagnosis of large scale coal-fired boilers.更多还原