旋转机械油膜轴承故障诊断的研究

摘要

In order to solve the problem of rotating machinery oil turbulence is more difficult to diagnose ,through the establish-ment of oil turbulence fault model ,set oil turbulence fault state in Bently rotor test rig to get oil turbulence vibration characteris -tics.The results show that the time domain waveform diagram of the rotor in the oil turbulence becomes 1/2 of the original wave-form.The turbulence frequency occurs in a frequency of about 1/2 of the working frequency .The axis rotates about a half cycle . All in all,the experimental results and the theoretical analysis is closer ,it provides a theoretical basis for oil turbulence of rotating machinery fault diagnosis .%为解决旋转机械油膜涡动故障较难诊断的问题，通过建立油膜涡动故障模型，利用实验室Bently转轴试验台设置油膜涡动故障状态，获得轴承在油膜涡动状态下的主要振动特征。结果显示，转轴轴心在油膜涡动时的时域波形变为原来的1/2，涡动频率大约为工作频率的1/2左右，转轴轴心转动半个周期。综合得出，试验结果与理论分析较为接近，为旋转机械油膜涡动故障诊断提供了一定的实践依据。