摘要
介绍了QFR-400-2-20型发电机单环流式密封油系统的回路构成,分析各个回路的流程和作用,并和双环流密封油系统作简单比较。对正常运行回路和事故运行回路建立了可靠性模型,并采用故障模式影响及危害性分析对"油-氢差压控制单元"进行初步分析,对发电机"进油事故"采取故障树(FTA)方法分析,提出增设发电机底部液位报警装置的建议。
The single-ring type sealing oil system＇s loop build-up, of QFR-400-2-20 type generators, is being described, the flow and function of each loop is analyzed and concisely compared with the double-ring type sealing oil system. Reliability models of the normal running loop and the emergency running loop are set-up, and a preliminary analysis performed, for the ＂oil-hydrogen differential pressure control unit＂, by the FMECA analyzing method. Cases of generator＇s ＂oil-influx accidents＂ are dealt with by the fault tree analysis（FTA） method. The addition of an oil level alarm sounding device, to be fixed at the generator＇s base, is proposed.
出处
《发电设备》
2007年第6期486-490,共5页
Power Equipment
关键词
能源与动力工程
发电机
单环流式密封油系统
回路
可靠性
故障树
energy and power engineering
generator
single-ring type sealing oil system
loop
reliability
fault tree
