燃机安全油回路问题分析及优化

Analysis and Optimization of Safety Oil Circuit Problems in Gas Turbine

三菱M701F4型燃气-蒸汽联合循环分轴布置的燃机安全油跳闸回路只设计有一个跳闸电磁阀,存在因单一跳闸电磁阀故障,机组拒动或误动的安全风险。通过对燃机安全油回路以及跳闸电磁阀控制回路的优化,将单一跳闸电磁阀改造为4个电磁阀双通道先并联再串联控制,解决了机组存在误动或拒动的安全隐患,同时实现了电磁阀在线试验功能,提高了运行的可靠性,在同类型燃气机组中具有普遍的推广价值。

The safety oil trip circuit of the Mitsubishi M701F4gas steam combined cycle split shaft arrangement is originally equipped with only one trip solenoid valve,thereby presenting a safety concern of potential unit refusal or misoperation in the event of a single solenoid valve failure.Through the optimization of the safety oil circuit and trip solenoid valve control circuit of the gas turbine,a transformation was implemented whereby a single trip solenoid valve was replaced by four solenoid valves featuring dual channels.Initially first connected in parallel and subsequently in series for control,this modification effectively mitigated the safety risks associated with unit misoperation or refusal of operation.Concurrently,the implementation of online testing function for the solenoid valve was achieved,improving operational reliability,and it has universal promotion value in the same type of gas turbine.