针对燃气轮机液体燃料计量阀执行机构关键部件局部高温的问题，开展了关键部件散热技术的研究。通过数值计算方法分析了典型工况下关键部件温升原因，建立了不同部件热防护方法，探究了环境温度、燃油流量、气凝胶厚度、热管冷凝端长度及等效导热系数对部件散热的影响。结果表明：典型工况下，电机局部高温主要受环境影响，电磁阀高温是其高功率密度所致；添加10mm气凝胶隔热层可以使电机在许可温度下工作；热管冷凝端长度增长22.8 mm，电磁阀表面温度降低2K；热管的等效导热系数为3000 W·(m·K)-1时，电磁阀表面温度降低22.7%；若继续提高热管等效导热系数，冷却系统散热量增加，但增加速率逐步降低，对散热系统散热性能效果并不明显。研究可为计量阀执行机构高效散热设计提供参考。

In response to the problem of high local temperature of key components of the actuator of the liquid fuel metering valve of gas turbine, the research on the heat dissipation technology of key components has been carried out. The reasons for the temperature rise of key components under typical working conditions were analysed through numerical calculations, and thermal protection methods for different components were established, and the effects of ambient temperature, fuel flow rate, aerogel thickness, heat pipe condensation end length, and equivalent thermal conductivity on component heat dissipation were investigated. The results show that: under typical working conditions, the local high temperature of the motor is mainly affected by the environment, and the high temperature of the solenoid valve is caused by its high power density; the addition of a 10mm aerogel insulation layer can make the motor work under the permissible temperature; The length of the heat pipe condensation end increased by 22.8 mm, the surface temperature of the solenoid valve decreased by 2K.The surface temperature of the solenoid valve is reduced by 22.7% when the equivalent thermal conductivity of the heat pipe is 3000 W·(m·K)-1. If the equivalent thermal conductivity of the heat pipe continues to increase, the cooling system heat dissipation increases, but the rate of increase gradually decreases, and the effect on the heat dissipation performance of the cooling system is not obvious. The study can provide a reference for efficient heat dissipation design of metering valve actuators.