有限元分析在管壳式换热器定期检验中的应用
董伟雄，欧阳星峰，戚道华
（绍兴市特种设备检测院，浙江 绍兴 312071）
摘要：换热器常处于高温高压的工作环境下，并且受力复杂。在定期检验工作中比较难以掌握它的受力情况。应用有限元分析对管壳式换热器在机械场和耦合场两种不同工况下进行应力分析，分别确定应力集中位置，得出应力集中位置应力最大理论值。通过对两种工况的比较，分析得出热载荷是换热器应力值增大的主要影响因数，并且把应力集中位置作为定期检验工作的重点，从而提高缺陷的检出率，消除检验死角，为检验师制定全面检验方案提供理论基础。
关键词：换热器；有限元；机械场；耦合场
中图分类号：TK172 文献标志码：A doi：10.3969/j.issn.1006-0316.2016.05.006
文章编号：1006－0316 (2016) 05－0022－04
The finite element analysis application in tube and shell heat exchanger regular inspection
DONG Weixiong，OUYANG Xingfeng，QI Daohua
( Shaoxing Special Equipment Testing Institute, Shaoxing 312071, China )
Abstract：Heat exchanger is often in high temperature and high pressure working environment, and the stress is complex. in the regular inspection, it is difficult to know its force. In this paper, finite element analysis is used to analyze tube and shell heat exchanger in mechanical field and coupling field stress analysis under two different conditions, determine the differentiate position of stress concentration and conclude the stress concentration position stress maximum theoretical value. By comparing two kinds of working condition, this paper analyzed heat exchanger heat load is the main influence factor of stress value increases and use it as the focus of the regular inspection, so as to improve the detection rate of defects, eliminate blind Angle inspection, which provides the theoretical foundation for docimaster examination scheme.
Key words：heat exchanger；finite element；mechanical field；coupling field
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收稿日期：2016－01－06
基金项目：不锈钢管壳式换热器事故规律分析与失效周期预测（20120257）
作者简介：董伟雄（1978－），男，浙江绍兴，硕士，工程师，主要从事压力容器检验工作。
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