换热管与管板液压胀接技术进展  

Development of Hydraulic Expansion of Tubes Intotubesheets

作　　者：李志海[1,2,3] 刘雁[1,2,3] 宣征南[1,2,3] 杜继盛 

机构地区：[1]广东石油化工学院,广东茂名525000 [2]广东省石化装备故障诊断重点实验室,广东茂名525000 [3]广东省石油化工装备工程技术研究中心,广东茂名525000

出　　处：《机械设计与研究》2016年第6期81-86,共6页Machine Design And Research

基　　金：广东省普通高校青年创新人才项目(自然科学类)(2014KQNCX198);广东省石化装备故障诊断重点实验室开放基金(GDUPTLAB201609);大学生创新创业训练项目(201411656006)

摘　　要：换热管与管板接头是换热器中最容易发生失效的地方。换热管与管板连接接头的可靠性一直是管壳式换热器设计中受到重点关注的问题。目前常用的液压胀接技术是管壳式换热器换热管与管板连接技术的发展方向之一。换热管与管板接头胀接的研究主要从理论分析、有限元分析和试验研究三个方面进行。其理论分析的模型主要有换热管是单管,管板是无限平板模型和单管套筒模型。有限元分析模型主要有平面应力模型或平面应变模型、2D轴对称模型和3D模型。实验研究包括拉脱实验(压脱试验)、密封实验、应力腐蚀试验、X光衍射试验和应变测量等。通过这些试验来分析不同结构参数下胀接接头的连接强度和密封性能和胀后残余应力,并与理论分析的结果进行比较研究。The tube-to-tubesheet connection joints are the easiest in failure during the application process. The reliability of tube-to-tubesbeet connection joints has been a key concern in the design of shell and tube heat exchangers. At present, the commonly used hydraulic expanding technology is one of the development directions of the technology of tube-to-tubesheet connection joints in heat exchanger. Various techniques are used to investigate the hydraulically expanded tube-to-tubesheet joints, namely： analytical, numerical and experimental. The main analytical analysis models are the single tube and infinite tubesheet model and the single sleeve model. Three different finite element models are used for the numerical analysis, namely： plane stress/strain, 2D axisymmetric and 3D. Experimental study includes pull-out test （push-out test）, seal test, stress corrosion tests, X-Ray diffraction stress measurements and strain gage measurements. The strength, sealing performance and residual stress of hydraulically expanded tube-to- tubesheet joints with different structural parameters are analyzed by these tests. And they were compared with the results of theoretical analysis.

关 键 词：液压胀接 换热器 有限元分析 换热管与管板 

分 类 号：TQ051.5[化学工程]