某型燃气轮机温度场异常故障排查处理

Toubleshooting of abnomal tempenature field of a gas turbine

燃油系统是某型燃气轮机关键系统之一,对燃气轮机的正常运行起着至关重要的作用。文章针对某型燃气轮机在运行过程中出现的温度场异常现象,介绍了故障的排查处理经过,结合燃油系统的基本结构和工作原理,分析了故障的原因,提出针对性的排查方法和预防措施。通过排查确认,温度场出现异常的原因是燃油系统中的燃油分配器内部二油路滑阀卡滞导致其不能正常开闭,进而造成工作喷嘴二油路供油异常。

The fuel system is one of the central systems of a gas turbine,and it plays an essential role in ensur⁃ing the normal operation of the gas turbine.In view of the abnormal temperature field of a gas turbine in operation,this paper introduces the troubleshooting process and analyzes the causes of the fault according to the basic structure and working principle of the fuel system.In addition,the paper puts forward targeted troubleshooting methods and preventive measures.It is confirmed by troubleshooting that the abnormal temperature field is caused by the stagna⁃tion of the No.2 fuel slide valve inside the fuel distributor of the fuel system,which leads to the failure of the No.2 fuel slide valve to open and close normally and then the abnormal fuel supply to the No.2 fuel line of the working nozzle.