一次风机失速导致锅炉MFT的事故分析  

Analysis on Boiler MFT Caused by Primary Air Fan Stall

作　　者：童家麟[1] 华国钧 方磊 张江丰[1] 翁景 杨振华[1] 

机构地区：[1]国网浙江省电力公司电力科学研究院 [2]浙江省能源集团有限公司

出　　处：《电站系统工程》2016年第4期79-80,82,共3页Power System Engineering

摘　　要：一次风机失速后的操作不当,会影响机组的稳定运行。以某超超临界锅炉MFT事故为研究对象,对一次风机在磨煤机停运过程中的失速现象进行了深入的分析。分析表明,一次风机工作在高风压、低流量的工况点是造成一次风机失速的主要原因。同时,对一次风机失速后的磨煤机堵煤问题进行了研究,并提出了解决措施。As a result of incorrect operation during the primary air fan stall, the unit has been disturbanced greatly. For boiler MFT of a ultra-supercritical unit, analysis has been carried out by primary fan stall during shutdown process of the coal pulverizer. The results show that the primary air fan working on the condition of higher wind pressure and lower flow is the reason of primary air fan stall. Meanwhile, the mill output after primary air fan stall is also studied. The approaches of mill output are put forward.

关 键 词：一次风机 失速 磨煤机 堵煤 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]