管壳式换热器的振动特性分析及模态试验

作者：童鲁海 日期：2009-08-18/span> 浏览：3845 查看PDF文档

管壳式换热器的振动特性分析及模态试验

童鲁海
(杭州职业技术学院 化工系，浙江 杭州 310018)

摘要：针对某一型号管壳式换热器管程入口和出口处容易损坏的问题，采用有限元模态分析和试验模态分析相结合的方法，对其动态特性进行了分析。研究结果表明其固有频率在180 Hz以上，避开了流体诱导振动产生的激振频率，但需加强其管程入口和出口处的刚度和壳体螺栓连接部位的连接强度。有限元模态分析方法可为其他类型管壳式换热器的动态特性快速评价和可靠性优化设计提供参考。
关键词：管壳式换热器；流体诱导振动；振动特性；有限元分析；试验分析
中图分类号：TK172文献标识码：A文章编号：1001-4551(2009)07-0046-03

Vibration characteristics analysis and modal experiment of shell and tube heat exchanger
TONG Luhai
（Department of Chemical & Engineering, Hangzhou Professional Technical College, Hangzhou 310018, China）
Abstract: Aiming at the entrance and exit of one type of shell and tube heat exchanger are easily damaged. With the combination of finite element model analysis and experimental model analysis, the dynamic characteristics of the heat exchanger were analyzed. The results indicate that its natural frequency is above 180 Hz which avoids the excitation frequency produced by flowinduced vibration, but the stiffness of tube entrance and exit and the connection position strength between shell and bolt need to be strengthen. The finite element modal analysis method is verified by experiments which could provide references for rapid evaluation of dynamic characteristics on other types of shell and tube heat exchanger and reliability optimization design.
Key words: shell and tube heat exchanger； flowinduced vibration； vibration characteristic； finite element analysis； experimental analysis
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