CAJ | 학술논문

针对福建龙岩某厂离心压缩机工作中碰摩振动的实际故障,从产生的机理分析入手,总结了碰摩振动的现象、类型、特征和原因,认为发生碰摩时,振动波形和轴心轨迹不稳定,工频是主要成分,严重碰摩时,二、三次谐波幅值增加明显。分析了影响碰摩振动的因素,认为偏心距、转速、半径间隙、偏心量、静子径向刚度等对碰摩振动影响较大。在碰摩振动故障诊断方面提出用HHT诊断方法,可以在早期尽快、准确发现故障;在实际工作中,提出一些具体的改进对策,对减少碰摩故障的发生有指导意义。
침대복건룡암모엄리심압축궤공작중팽마진동적실제고장,종산생적궤리분석입수,총결료팽마진동적현상、류형、특정화원인,인위발생팽마시,진동파형화축심궤적불은정,공빈시주요성분,엄중팽마시,이、삼차해파폭치증가명현。분석료영향팽마진동적인소,인위편심거、전속、반경간극、편심량、정자경향강도등대팽마진동영향교대。재팽마진동고장진단방면제출용HHT진단방법,가이재조기진쾌、준학발현고장;재실제공작중,제출일사구체적개진대책,대감소팽마고장적발생유지도의의。
The paper studies the practical fault of rub-impact vibration of the centrifugal compressor in a certain factory in Longyan.From the analysis of the mechanism,the paper summarizes the rub-impact vibration phenomenon,types,characteristics and reasons.It is found that vibration waveform and orbit of shaft center are unstable when rub-impact happens,and that work frequency is the main reason.Amplitudes of second and third harmonic waves are increased significantly when rub-impact is serious.Factors of rub-impact,radius clearance,eccentricity,rotational speed and radial stiffness of stator are thought to have large effect on rub-impact vibration.By detecting the sign of rub-impact vibration with HHT detection methods,we can detect the fault at an early stage.In actual work,we put forward some concrete improvement measures,which is of guiding significance to reduce the occurrence of rub-impact fault.