| 考虑壳体-管板温差的换热器强度公式推导 |
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| 引用本文： | 刘天丰,陈建良,林兴华.考虑壳体-管板温差的换热器强度公式推导[J].压力容器,2007,24(10):22-26. |
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| 作者姓名： | 刘天丰 陈建良 林兴华 |
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| 作者单位： | 1. 江南大学,机械工程学院,江苏,无锡,214122
2. 浙江大学,化工机械研究所,浙江,杭州,310027 |
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| 摘 要： | 在管壳式换热器的强度计算规范中,没有考虑管板和壳体间温差而引起的径向内力,而该应力有时应当引起重视。基于弹性力学中的板壳理论,根据管板和壳体连接处变形协调一致的条件,推导考虑该因素的强度计算公式。通过算例与有限元数值解进行比较,发现用于强度校核时它是保守的,该公式可叠加至其它载荷下的计算结果中。
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| 关 键 词： | 换热器 管板 强度 有限元 温差应力 |
| 文章编号： | 1001-4837（2007）10-0022-05 |
| 修稿时间： | 2007-08-02 |
Heat Exchanger Strength Calculation Formula Deduction Considering Shell-tubesheet Temperature Difference |
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| LIU Tian-feng,CHEN Jian-liang,LIN Xing-hua.Heat Exchanger Strength Calculation Formula Deduction Considering Shell-tubesheet Temperature Difference[J].Pressure Vessel Technology,2007,24(10):22-26. |
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| Authors: | LIU Tian-feng CHEN Jian-liang LIN Xing-hua |
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| Affiliation: | 1.School of Mechanical Engineering College, Southern Yangtze University, Wuxi 214122, China; 2.Research Institute of Chemical Machinery, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | In the tube and shell heat exchanger strength calculator criterions,there are no radial internal force brought by tubesheet and shell's different temperature,however,these forces should be paid attention sometimes.Based on elastic plate and shell mechanics theory,according to the condition of compatible deformation at tubesheet-shell joint,the strength calculation formula was deduced considering factor above.In a sample,the FEM numerical and analytic results were compared,and the deduced analytic formula is conservative in strength checkage.Based on elastic mechanics postulates,these formulas can be added into result calculated under other loads. |
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| Keywords: | heat exchanger tubesheet strength FEM temperature difference stress |
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