叶轮机械叶片故障的叶间动态压力诊断法  

Diagnosing Blade Faults in Turbo Machinery by Probing the Fluid's Dynamic Pressure in the Blade Path

作　　者：孙红岩[1] 谢志江[1] 陈平[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《动力工程》2005年第4期563-566,共4页Power Engineering

基　　金：国家十五科技攻关计划项目(2001BA957C)

摘　　要：叶间动态压力诊断法是叶轮机械叶片故障诊断的一种新方法。该方法采用安装在外壳上的动态压力传感器非接触测量旋转叶片间流体的动态压力信号,通过分析该信号的时域波形、频谱和对数差谱,可获取叶片故障信息。实验证明该诊断方法是正确的、有效的。图10参12。Blade path dynamic pressure diagnosis is a new non-contacting way of diagnosing blade faults in turbo machineries. With this method, the dynamic pressure signal of the fluid in the blade path is being measured by a dynamic pressure sensor fixed on the casing wall. Blade fault informations can be obtained by analyzing the pressure signal＇s wave shape in the time realm, its frequency spectrum and its logarithm difference spectrum. Experiments have verified that this method is accurate and effective. Figs l0 and refs 12.

关 键 词：动力机械工程 叶轮机械 故障诊断 叶间动态压力 非接触测量 

分 类 号：TH165[机械工程—机械制造及自动化]