航空发动机气路故障静电监测技术研究

Research on Electrostatic Monitoring Technology for Fault Diagnoses of Aero-engine Gas Path

航空发动机气路中任一部件的故障都会严重影响发动机的性能,甚至造成严重后果。本文研究了基于静电监测机理的发动机气路碎屑监测技术,设计了一套航空发动机气路故障静电监测系统,并在发动机模拟试验台上进行了两种典型故障模拟试验。研究表明,该系统通过监测发动机排气颗粒的静电电荷水平和变化规律,可判断发动机气路部件的故障情况,为发动机故障诊断和健康管理提供关键技术手段。

The failure of any part of the aero-engine gas path will seriously affect the performance of the engine,and even cause serious consequences.In this paper,the monitoring technology of engine gas path debris based on electrostatic monitoring mechanism was studied,an aero-engine gas path fault electrostatic monitoring system was designed,and two typical fault simulation experiments were carried out on the engine simulation test-bed.The research shows that the system can judge the fault of the engine gas path components by monitoring the electrostatic level and change rule of the engine exhaust particles,and provide the key technical means for the engine fault diagnosis and health management.