Research on Stress Intensity of Variable Cross-section H-type Structure in Heat Exchanger with Longitudinal Flow of Shell Side
Variable cross-section H-type structure, which is used in the new type of heat exchanger with longitudinal flow of shell side, could reduce the scour action of imports fluid on tube bundle and prevent the vibration of tube bundle.It can also improve the state of the shell side fluid flow, reduce the flow dead zone, which can make more efficient use of the heat transfer area and improve the energy efficiency.The new structure will make the temperature and stress distribution in the heat distribution more complex, so it is necessary to analyze the stress intensity of variable cross-section H-type structure.Three-dimensional finite element model of variable cross-section H-type structure is established in this paper, the surface temperature of the various parts of the heat exchanger are determined through temperature analysis.Using ANSYS Workbench software, thermal-stress analysis of H-type structure with different structural parameters is applied and temperature and stress field of which is obtained.The results show that: Ring plate of H-type structure has a larger temperature gradient along the thickness direction.The maximum stress of the heat exchanger is 203.13 MPa, which occurred on the connections of ring plate and jacket in the lower temperature side.Ring plate thickness of H-type structure has a great influence on its maximum stress, therefor, a reasonable selection of ring thickness is important for the safety of the heat exchanger.
heat exchanger variable cross-section H-type structure thermal stress stress intensity
Zunchao Liu Ke Wang Xin Gu Minshan Liu
Thermal energy engineering research center of Zhengzhou University,Zhengzhou 450002,China
国际会议
2014 International Symposium on Structural Integrity,ISSI2014(2014国际结构完整性学术会议)
兰州
英文
169-174
2014-08-20（万方平台首次上网日期，不代表论文的发表时间）