摘要
大型往复式压缩机的曲轴-连杆-活塞结构因其产生的不平衡力,极易发生疲劳断裂,对断裂原因进行有效分析对故障消除措施的制定具有重要作用。针对某气田压缩机组联轴器的多发性断裂故障,首先对断裂螺栓进行理化分析,再通过仿真计算系统扭振固有频率,并对系统进行扭振及轴功率、扭矩测试,诊断出故障产生原因是系统第5阶次扭振共振且峰值扭矩超标,继而在压缩机组光轴段加装一个惯性飞轮对系统扭振特性进行调频处理,使螺栓断裂故障得以根治。这种将理论和测试结合的故障诊断方法可用于其他类似问题,具有理论和工程实际意义。
The crankshaft-connecting rod-piston structure of large reciprocating compressor may have fatigue fracture very easily due to its unbalanced force. Therefore, effective analysis of fracture causes plays an important role in the formulation of fault elimination measures. In this paper, the coupling of a natural gas compressor with frequently-occurring fracture failures is studied. Firstly, the physical and chemical analysis of fractured bolts is carried out. Then, the system natural frequencies of torsional vibration are calculated by simulation. Moreover, the torsional vibrations, working torque and power are measured. It is found that the fifth order torsional vibration resonance exists and the peak torque exceeds the bolt allowable value. Thus, an inertial flywheel is added to the shaft to modify the system resonance torsional vibration frequency. In this way, the bolt fracture failure is cured. This fault diagnosis method combines theoretical analysis with testing, which can also be used to solve some other similar problems. It has theoretical and practical engineering significance.
作者
王志华
张聪
刘文华
WANG Zhihua;ZHANG Cong;LIU Wenhua(School of Energy and Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Wuhan Xinxin Semiconductor Manufacturing Corporation,Wuhan 430205,China)
出处
《噪声与振动控制》
CSCD
2018年第6期150-154,共5页
Noise and Vibration Control
关键词
振动与波
压缩机故障诊断
金属理化分析
扭振仿真
扭振及扭矩测试
vibration and wave
fault diagnosis of compressor
physical and chemical analysis of metals
torsional vibration simulation
measurement of torsional vibration and torque
作者简介
王志华（1972-），男，武汉市人，博士，副教授，主要研究方向为船舶机械设备状态监测与故障诊断技术。E—mail：zhwang@whut．edu．cn
