摘要
采用有限元分析方法,利用ANSYS Workbench软件,对不同腐蚀深度、长度、宽度下的埋地管道最大应力以及剩余强度进行模拟分析。结果表明:腐蚀深度对最大应力以及承压能力的影响程度要远大于腐蚀宽度和长度,腐蚀深度也是影响管道外层寿命的最大影响因素。腐蚀长度和宽度没有腐蚀深度对剩余强度的影响程度大。相同腐蚀深度条件下,大面积腐蚀的最大应力高于全面积腐蚀,大面积腐蚀的剩余强度低于全面积腐蚀。该研究结论可以为石化运输管道寿命预测、安全运行、强度监视等提供理论指导。
The maximum stress and residual strength of buried pipelines with different corrosion depth, length and width are simulated by using finite element analysis method and ANSYS Workbench software. The results show that the effect of corrosion depth on the maximum stress and bearing capacity is much greater than that of corrosion width and length, and corrosion depth is also the biggest factor affecting the outer life of pipeline. The corrosion length and corrosion width have less effect on the residual strength than corrosion depth. Under the same corrosion depth, the maximum stress of large area corrosion is higher than that of full area corrosion, and the residual strength of large area corrosion is lower than that of full area corrosion. The conclusion can provide theoretical guidance for the life prediction, safe operation and strength monitoring of petrochemical transportation pipeline.
作者
刘宗虎
王富强
LIU Zonghu;WANG Fuqiang(Xi′an Aerospace Test Technology Research Institute,Xi′an 710100,China)
出处
《能源化工》
2020年第1期71-76,共6页
Energy Chemical Industry
关键词
输油管道
腐蚀缺陷
剩余强度
有限元分析法
oil pipeline
corrosion defect
residual strength
finite element analysis method
作者简介
刘宗虎(1965-),男,陕西岐山人,本科,高级工程师,现主要从事机械设计及液体火箭发动机试验技术的研究工作。E-mail:3164466763@qq.com;联系人:王富强。E-mail:wangfuqi_52382962@qq.com。
