摘要
基于传递矩阵计算气柱固有频率,针对某单位往复压缩机出口管道以及空冷器的振动情况,研究了管道气流脉动的控制方法。通过对现场管道进行实际测量,建立管道气柱和机械的模型,找到了现场振动大的根本原因,并从气柱和机械2个方面分别进行减振措施,通过增加孔板和增大阻尼来改变其气柱和机械固有频率,现场施工后压缩机组出口管线和空冷器振动明显下降,表明改变气柱固有频率能够有效降低压缩机组出口管道和相应附件的振动,保护机组整体安全稳定运行。
This paper calculates gas natural frequency based on transfer matrix, and studies the control method of pipe flow pulsation aiming at vibration situation of the reciprocating compressor outlet piping as well as the air cooler of an enterprise. The root cause of the vibration at the scene is found through the actual measurement of field pipelines and the establishment of pipeline gas column and mechanical model. Vibration reduction measures are executed respectively from two aspects of the column and machinery. By increasing the orifice plate and the damping, natural frequency of the air column and machines is changed. And after site operation, the vibration of the compressor outlet pipelines and air cooler declined obviously. It indicates that changing air column natural frequency can effectively reduce the vibration of the compressor outlet piping and its accessories, and can protect the safe and stable operation of the whole unit.
出处
《压缩机技术》
2015年第4期21-25,共5页
Compressor Technology
关键词
气流脉动
气柱共振
孔板
gas pulsation
gas resonance
orifice plate
