机电工程
機電工程
궤전공정
MECHANICAL & ELECTRICAL ENGINEERING MAGAZINE
2009年
7期
46-48
,共3页
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
管殼式換熱器%流體誘導振動%振動特性%有限元分析%試驗分析
관각식환열기%류체유도진동%진동특성%유한원분석%시험분석
shell and tube heat exchanger%flow-induced vibration%vibration characteristic%finite element analysis%experimen-tal analysis
针对桌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.
針對桌一型號管殼式換熱器管程入口和齣口處容易損壞的問題,採用有限元模態分析和試驗模態分析相結閤的方法,對其動態特性進行瞭分析.研究結果錶明其固有頻率在180 Hz以上,避開瞭流體誘導振動產生的激振頻率,但需加彊其管程入口和齣口處的剛度和殼體螺栓連接部位的連接彊度.有限元模態分析方法可為其他類型管殼式換熱器的動態特性快速評價和可靠性優化設計提供參攷.
침대탁일형호관각식환열기관정입구화출구처용역손배적문제,채용유한원모태분석화시험모태분석상결합적방법,대기동태특성진행료분석.연구결과표명기고유빈솔재180 Hz이상,피개료류체유도진동산생적격진빈솔,단수가강기관정입구화출구처적강도화각체라전련접부위적련접강도.유한원모태분석방법가위기타류형관각식환열기적동태특성쾌속평개화가고성우화설계제공삼고.
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 flow-induced vi-bration, but the stiffness of tube entrance and exit and the connection position strength between shell and bolt need to be strength-en. The finite element modal analysis method is verified by experiments which could provide references for rapid evaluation of dy-namic characteristics on other types of shell and tube heat exchanger and reliability optimization design.
