某船燃气轮机动力涡轮转速不稳故障分析

Analysis of Unstable Speed Fault of Power Turbine

为解决某船燃气轮机动力涡轮转速不稳故障,分析推进遥控系统对燃气轮机油门的闭环控制流程,进一步对燃油作动器、燃气发生器转速传感器、动力涡轮转速传感器、燃机电子柜的电气连接进行检查,与经验数据进行比对,并对重点部位的电气连接件进行拆检。最终结果表明,该燃气轮机动力涡轮转速不稳的原因是箱装体底部电连接器接插件瑕疵,造成接触不良。

In order to solve the unstable speed of the power turbine of a ship's gas turbine,the closed-loop control process of the gas turbine throttle of the propulsion remote control system was analyzed,and the electrical connections of the fuel actuator,gas generator speed sensor,power turbine speed sensor and gas turbine electronic cabinet were further checked,compared with the empirical data,and the electrical connections of key parts were dismantled and checked.The final results show that the unstable speed of the power turbine is caused by the defects of the electrical connector at the bottom of the box body,resulting in poor contact.