高温蒸汽管道焊接接头缺陷失效分析与安全评定
Failure Analysis and Safety Evaluation of Weld Joints on Steam Pipes in High Temperature Service
方学锋，张伯君*，梁斌，雒相垚，文耀华，周丹，姜君
作者单位：南京市锅炉压力容器检验研究院
中文关键字：高温；蒸汽管道；失效分析；安全评定；焊接接头
英文关键字：high temperature; steam pipes; failure analysis;safety evaluation; weld joints
中文摘要：当管道内部含有超标缺陷且不易消除时，如何保证这些带病管道安全运行是工程界经常遇到的难题之一。本文以某高温蒸汽管道为例，通过有限元分析对含缺陷管道的强度进行计算，再根据GB/T 19624标准对超标缺陷进行安全评定，为后续管道的安全使用提供数据支撑。
英文摘要：How to ensure the safe operation of pipes with defects was one of the problems often encountered in the engineering,when it was not easy to eliminate them.In this paper, the strengths of steam pipes operated in high temperature environment were analyzed using finite element method, and risks of dangerous locations with defects beyond tolerancewere assessed by terms in GB/T 19624 standard.It could give technical supports for safety evaluation of pipes containing defects.