一起轴流压缩机振动间歇波动故障分析与处理

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Analysis and Tr0ublesh00ting 0f Intermittent Vibration Fluctuationfor an Axial CompressorQu Lei Hou Xinjun Jin Ying Zhang Jianfeng Liao YuheAbstract： Vibration fluctuation of an axial compressor intermittently occurred in the case of steady workingcondition.By comparing features such as wave，spectrum，orbit，etc.，bere and after vibration fluctuation，confirmedthat the frequency of rotor oil whirl that existing obviously closed to the first-order nature frequency of rotor was themain reason.Aiming to decrease disturbing force，some aged O-rings of stationary blades were replaced to eliminatethe rubbing between rotor and stationary blades.Moreover，the top clearance of the journal bearing at the inlet sidewas reduced to improve the stability of bearing.After finishing above measures，interm itent vibration fluctuation ofthe compressor completely disappeared。

Key words：Axial compressor；Interm itent fluctuation；Low frequency；Oil whirl；Vibration0 前言大型旋转机械设备广泛应用于冶金、石化、电力及能源等领域，作为工厂关键的动设备，其是否安全、稳定、高效运行，将直接影响到企业的正常生产和经济效益。为降低机组维护、检修费用，提高机组利用率，各工厂的设备检修模式已由传统的定期检修、事后检修向基于机组运行状态的检修模式逐渐转变 [1。伴随着互联网技术、旋转机械设备故障诊断技术的日益发展与成熟，以远程监测设备为载体的远程在线监测技术凭借其实效性强、特征信息全面、响应速度快 、故障定位效率高等优势[21，深受广大设备管理者青睐。

本文主要针对国内某化工企业硝酸装置中轴流压缩机出现的间歇性振动波动故障。利用远程监测平台对故障现象进行精密分析与诊断，定位故障源并提供排查、检修措施，有效地提高了设备检修效率，保证了该机组的安全、稳定运行。

瞿雷，男，1984年生，硕士，助理工程师。西安市，710075。