某涡轴发动机转速异常波动故障分析

Fault Analysis of Abnormal Rotating speed fluctuation of a Turboshaft

针对某涡轴发动机地面台架出现转速异常波动的故障,建立了故障树,排查分析了故障树中的各底事件,确定故障原因为泵调节器计量活门挡板组件中挡板与薄片铆接处松动。同时,提出了在挡板组件铆接前,增加铆钉与其接触零件结合面处涂胶的改进措施。经试验验证表明,改进措施有效。

A fault tree is established for the fault of the turbulence engine ground gantry. The fault tree is established.The bottom events in the fault tree are analyzed and analyzed. The cause of the fault is determined by the pump regulator metering shutter assembly. Loose. At the same time, it is proposed to improve the glue coating at the joint surface of the rivet and its contact parts before the baffle assembly is riveted. Tests have shown that the improvement measures are effective.