记笔记

Cause analysis of vibration in shell-and-tube heat exchanger

Jia Wu^1,2Jiansheng Hu^1,2Bin Du^1,2Ping Tang^1,2Jie Tang^1,2

1. Zhejiang Academy of Special Equipment Science 2. Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province

摘要：Heat exchanger is a universal process equipment,which is widely used in chemical industry,oil refining,thermal power and other industries.Shell-and-tube heat exchangers often fail prematurely due to flow-induced vibration.In this paper,aiming at the problem of severe vibration of shell-and-tube heat exchanger in an enterprise,the vibration acceleration sensors are used to measure the vibration of shell and tube side of heat exchanger.Through the analysis of the measurement results,it is found that when the flow rate on the shell side of the heat exchanger is greater than 50000 Nm~3/h,the flow-induced vibration of the tube bundle occurs,and the vibration frequency is 57Hz,which is close to the natural frequency of the tube bundle.And the greater the flow rate on the shell side,the more intense the vibration.In order to reduce the vibration of heat exchanger,the damping measure of inserting baffles between tubes is adopted.

基金：

financially supported by the Natural Science Foundation of Zhejiang Province （NO.LQ21E050001）； the science and technology project of Zhejiang Provincial Administration for Market Regulation （NO.CY2022221）；

会议名称：

4th International Conference on Advances in Materials, Machinery, Electronics （AMME 2021）

会议时间：

2021-10-23

会议地点：

中国湖北武汉