对转双转子局部碰摩故障实验  

Experimental Study on Local Rub-Impact Fault of Counter-Rotating Dual-Rotor

作　　者：王四季[1] 廖明夫[1] 蒋云帆[1] 丁小飞[1] 

机构地区：[1]西北工业大学动力与能源学院,陕西西安710072

出　　处：《推进技术》2013年第1期31-36,共6页Journal of Propulsion Technology

摘　　要：针对航空发动机涡轮机匣的结构特点,设计了一种可以模拟局部碰摩故障的实验装置。利用对转双转子实验器,实验研究了高、低压转子对转时,单独及同时发生局部碰摩的振动特性。结果表明,对转双转子涡轮发生局部碰摩时,静子的振动信号中会出现高倍频、分数倍频及组合频率成分,通过组合频率成分,可以判断是否发生碰摩及碰摩发生的部件。According to the structure features of turbine casing, an experimental device which is used to study on local rub-impact fault was designed. When the high and low rotors are counter-rotating , by using the counter-rotating dual-rotor experimental apparatus as platform, the vibration characteristics excited by high rotor local rub-impact fault and low rotor local rub-impact fault were studied through the experiment. The experimental results show that when local rub-impact fault occurs on counter-rotating dual-rotor, there will be high harmonics, low harmonics and combined frequencies in the vibration signal of stator. And the position of the local rub-impact fault can be defined by analyzing the combined frequencies.

关 键 词：航空发动机 对转双转子 局部碰摩 故障诊断 组合频率 

分 类 号：V231.96[航空宇航科学与技术—航空宇航推进理论与工程]