碰摩转子轴心运动加速度信号的仿真分析  

The Simulation Analysis of Rub-impact Rotor Axes Motion Acceleration Signal

作　　者：孙云岭[1] 刘树勇[1] 危建辉 

机构地区：[1]海军工程大学船舶与动力学院,武汉430033 [2]海军广州地区装备修理监修室,广州510000

出　　处：《汽轮机技术》2010年第6期451-453,共3页Turbine Technology

基　　金：海军工程大学校自然科学基金(HGDQNJJ012);国防"十一五"预研资助项目(40101020103)

摘　　要：针对早期碰摩时转子振动特征与其它旋转机械常见故障特征相重复的问题,研究转子轴心运动加速度信号中蕴含的早期碰摩故障特征。建立了转子动力学模型并求解得到仿真转子振动信号,从中计算出转子轴心运动加速度信号并进行了分析。结果表明发生早期碰摩时,转子轴心加速度信号会在碰摩点处发生瞬间剧烈波动,可用来指示碰摩故障及部位,故障特征远比轴心振动位移信号和轴心轨迹图明显,可望用于早期碰摩故障的诊断。As the rotor vibration characters of early rub-impact fault are similar to the characters of other constant faults such as misalignment,in this paper rotor axes motion acceleration signals are studied to extract early rub-impact fault features. The rotor dynamics simulation models is set up to request rotor vibration signals, and rotor axes motion acceleration signals are calculated. The analysis outcome indicate that there are transient sharp fluctuation in acceleration signal af rub-impact point which could indicate fault position. The fault features are more clearly in acceleration signal than displacement and axes orbit signal, so it may be using to diagnose rub-impact fault.

关 键 词：转子碰摩 加速度 故障诊断 

分 类 号：TK268[动力工程及工程热物理—动力机械及工程]