含圆坑缺陷尿塔衬里开裂原因分析

含圆坑缺陷尿塔衬里开裂原因分析

Crack reason analysis of urea reactor lining with a round pit

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山东大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (1): 84-86.

吴俊飞林美祝卫国张艳飞

吴俊飞林美张艳飞：青岛科技大学机电工程学院, 山东青岛 266061；

祝卫国：山东省特种设备检验研究院, 山东济南 250013

收稿日期:2009-08-05 出版日期:2010-02-16 发布日期:2009-08-05
作者简介:吴俊飞(1968-),男,吉林磐石人,教授,硕士生导师,博士,主要研究方向为特种设备安全技术、机器人技术、超高压技术及应用．E-mail:jfw-2002@sina.co m.cn

WU Jun-Fei, LIN Mei, ZHANG Yan-Fei：College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China; ZHU Wei-Guo ：Shandong Special Equipment Inspection and Research Academy, Jinan 250013, China

Received:2009-08-05 Online:2010-02-16 Published:2009-08-05

摘要：

以在衬里背侧检漏孔下方存在一圆坑缺陷的尿塔为研究对象,进行有限元分析和应力腐蚀门槛值计算。结果表明：衬里背侧圆坑引起的应力集中为应力腐蚀的发生提供外部条件,在检漏蒸汽中氯离子的联合作用下最终造成圆坑处的应力腐蚀开裂。

关键词: 尿塔;衬里;ANSYS;氯离子;应力腐蚀

Abstract:

A urea reactor of which the lining has a round pit defect under the leak detecting hole was studied through finite element analysis and stress corrosion threshold value calculation. The results showed that the stress concentration causedby the round pit could provide an external condition for stress corrosion. So thestress corrosion crack happened under the simultaneous actions of stress concentration and chloride ions.

Key words: urea reactor; lining; ANSYS; chloride ion; stress corrosion

吴俊飞林美祝卫国张艳飞. 含圆坑缺陷尿塔衬里开裂原因分析[J]. 山东大学学报(工学版), 2010, 40(1): 84-86.

WU Jun-Fei, LIN Mei, ZHU Wei-Guo, ZHANG Yan-Fei. Crack reason analysis of urea reactor lining with a round pit[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(1): 84-86.

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