论文部分内容阅读
针对燃气涡轮发动机燃烧室状态监测方法不足,故障定位难和故障早期发现难的问题,以涡轮排气温度场周向数据为分析依据,通过研究燃气在涡轮通流部分的偏转规律,利用核主元分析(KPCA)方法对经过有效性处理后的温度场数据进行分析,并结合两台发动机的故障数据,分别对燃烧系统自身故障和热电偶传感器故障进行检测与识别,验证了排气温度场燃气偏转规律与核主元分析相结合的方法对燃烧系统故障和传感器故障进行诊断的有效性.结果表明:该方法能够将安装了环管式分布火焰筒的燃气涡轮发动机燃烧室的故障诊断定位层次从目前的燃烧室这个大部件提高到火焰筒级别的小部件.
Aiming at the insufficiency of gas turbine engine combustion chamber condition monitoring method, the difficulty of fault location and the early detection of fault, based on the analysis of the circumferential data of turbine exhaust temperature field, by studying the deflection of gas in turbine flow passage, Element analysis (KPCA) method to analyze the temperature field after the effectiveness of the treatment, combined with the two engine fault data, respectively, the combustion system failure and thermocouple sensor failure detection and identification to verify the exhaust temperature field Gas deflected law and KPCA method to diagnose the combustion system failure and sensor failure.The results show that the method can locate the fault diagnosis location of the gas turbine engine combustion chamber Level from the current combustion chamber of this large parts to raise the flame tube level of the small parts.