分子筛吸附塔温度交变载荷下的热-力耦合应力场分析  

Analysis of thermal-mechanical coupling stress field of molecular sieve adsorption tower under temperature alternating load

作　　者：陈建国[1] 王传平[1] 熊涛[1] 朱琳[1] 周兆明[2] 张佳 CHEN Jianguo;WANG Chuanping;XIONG Tao;ZHU Lin;ZHOU Zhaoming;ZHANG Jia(The First Gas Production Plant of Xinjiang Oilfield Company,Karamay 834000,China;Southwest Petroleum University,School of Mechanical Engineering,Chengdu 610500,China;State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]新疆油田公司采气一厂,新疆克拉玛依834000 [2]西南石油大学机电工程学院,成都610500 [3]油气藏地质及开发工程国家重点实验室,成都610500

出　　处：《压力容器》2021年第11期64-72,共9页Pressure Vessel Technology

基　　金：国家自然科学基金项目(51974271);四川省重点研发项目(2020YFG0180);中国石油新疆油田分公司项目(CQYC-2020-133)。

摘　　要：基于瞬态热力学基础理论,建立全尺寸吸附塔有限元模型,分析了温度交变载荷下塔体关键部位热应力分布规律,并对最大等效应力位置进行强度评估。结果表明,最大应力集中处于塔体开孔接管进出口内壁倒角处,最大为313.34MPa,等效应力沿接管逐渐向四周扩散;塔体内表面应力随着时间的增加呈先减小、后增大的趋势,外表面应力呈先增大、后减小的趋势;裙座连接处内外表面热应力大于塔体封头内外表面热应力;最大应力集中位置各评定路径对应的应力线性化结果均通过评定。所得结论可为吸附塔在复杂温度交变工况下的强度设计、寿命预测及维护提供理论依据。Based on the basic theory of transient thermodynamics,the finite element model(FEM)of the full-size adsorption tower was established.The distribution of thermal stress in key parts of the tower under temperature alternating load was analyzed.The strength of the maximum equivalent stress position was evaluated.The results show that the maximum stress concentration is located at the inlet and outlet of the adsorption tower,and the maximum stress concentration is 313.34 MPa.The equivalent stress gradually diffuses along the nozzles.With the increase of time,the inner surface stress decreases first and then increases,while the outer surface stress increases first and then decreases.The thermal stress on the inner and outer surface of the skirt joint is greater than that on the inner and outer surface of the tower body head.The stress linearization results of each evaluation path corresponding to the concentration position of maximum stress all passed the evaluation.The results can provide a theoretical basis for the strength design,life prediction and maintenance of the adsorption tower under complex temperature alternating conditions.

关 键 词：吸附塔 温度交变 应力场 热-力耦合 

分 类 号：TH49[机械工程—机械制造及自动化] O343.6[理学—固体力学]