能量回收机组异常振动故障的分析诊断  

ANALYSIS AND DIAGNOSIS OF ABNORMAL VIBRATION FAULT OF ENERGY RECOVERY UNIT

作　　者：屈世栋[1] 

机构地区：[1]中国石油化工股份有限公司天津分公司,天津300271

出　　处：《石油化工设备技术》2017年第1期63-66,共4页Petrochemical Equipment Technology

摘　　要：介绍了某石化装置能量回收机组运行过程中烟气轮机(简称烟机)出现的异常振动故障情况。通过在线振动监测,对机组振动信号的特征谱图、历史运行数据及机组结构进行综合分析,找出了引起机组振动故障的主要原因:烟机内部有部件断裂、脱落或有外部异物进入,造成烟机转子发生摩擦碰磨,使得转子对中状况恶化,增大了机组轴向载荷而导致机组轴位移超标至连锁停机。This paper introduces the abnormal vibration fault of the flue gas turbine in the energy recovery unit of a petrochemical plant during its operation process.Through on-line vibration monitoring,the paper makes a comprehensive analysis on the characteristic spectrum,historical operation data and unit structure of the unit vibration signal.It identifies the main reasons for the unit vibration fault involving internal component fracture and shedding of the flue gas turbine or external foreign body into it,resulting in rotor friction and rub of the flue gas turbine and deterioration of rotor alignment.This leads to increase of axial load of the unit and brings about over-standard axis displacement of the unit and chain shutdown.

关 键 词：能量回收机组 烟气轮机 异常振动 故障分析 

分 类 号：TE966[石油与天然气工程—石油机械设备]