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基于气柱共振的往复压缩机出口管道减振
技术应用樊良，回志澎
(1.武汉工商学院公共基础课部，湖北武汉430065；2.92537部队，北京100000)
[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固，并从气柱和机械 2个方面分则进行减振措施，通过增加孔板和增大阻尼来改变其气柱和机械围有频率，现场施工后压缩机组出口管线和空冷器振动明显下降，表明改变气柱围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。[关键调]：气流脉动；气拉共振；孔板
中图分类号：TH457
文献标志码：A
文章编号：1006-2971(2015)04-0021-05
Application of ReciprocatingCompressor Outlet Pipeline Vibration Technology Based on GasResonance
FAN Gen', HUI Zhipeng
(1. Department of Publie Basie Course, Wuhan Technology and Business University, Wuhan, 430065, China; 2 N0.92537 PLA, Beijing 100000, China)
Abstract: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 in-creasing 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 fre-quency 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.
Key words: gas pulsation; gas resonance; orifice plate
引言 1
往复压缩机主要功能是压缩气体，提高其压力，达到输送或者工艺要求。其工作特点是压力高，工作介质复杂，工作环境比较恶劣。由于压缩机周期性排气，导致排气管路内始终存在气流脉动，它在弯头，异径，阀门等变截面处产生激
收稿日期：201503-23
■2015年04期（总第252期）
振力使管系振动加剧。管路存在2种固有频率，-种是管路内气体构成的气柱固有频率；另-种是结构构成的固有频率。当激振频率与上述两者有重合时，就形成共振，使振动急剧增大。
在气柱固有频率方面：1962年，L.E.Kinsl和 A.K.Frey得出了平面波动理论方程，在工程中得到普遍应用叫；普渡大学对压缩机气体的热力性质及
压痛机技术21 sad