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葛天竹,李佳,周昌玉,贺小华.钛管换热器液压胀接接头性能分析[J].稀有金属材料与工程(英文),2018,47(12):3800~3805.[Ge Tianzhu,Li Jia,Zhou Changyu and He Xiaohua.Study on the Performance of Hydraulic Expanding-jointof Titanium Tube Heat Exchanger[J].Rare Metal Materials and Engineering,2018,47(12):3800~3805.]
Study on the Performance of Hydraulic Expanding-jointof Titanium Tube Heat Exchanger
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Received:March 27, 2017  Revised:August 30, 2017
DOI:
Key words: TA2 tube  hydraulic expansion  residual contact stress  initial clearance
Foundation item:国家自然科学基金资助项目(51675260,51475223)
Author NameAffiliation
Ge Tianzhu,Li Jia,Zhou Changyu and He Xiaohua  
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Abstract:
      Based on the finite element software,the performance of the hydraulic expanded joint of heat exchanger was analyzed.The effect of expansion pressure,material and initial clearance on the capacity and tightness of expanded joints was investigated.Results show that the capacity and tightness of expanded joints will be apparently enhanced with increasing pressures.Under the same pressure,the capacity and tightness of the joint of TA2 tube and TA2 tubesheet is better than the performance of the TA2-Q345R material combination.As the initial clearance is smaller,the residual contact pressure and pull-out force will decrease with the increasing initial clearance.As the initial clearance is larger,the residual contact pressure and pull-out force will retain a constant value regardless of the initial clearance.