含焊接错边缺陷压力管道安全性评价软件开发

发布时间：2018-05-01 10:23

本文选题：错边缺陷 + 压力管道　；参考：《科技通报》2017年11期

【摘要】：在压力管道安装中,由于施焊条件的限制,管道连接处存在焊接缺陷,错边缺陷是常见且难以避免的,错边的存在将引起局部应力集中,进而影响管道的使用安全。因此,必须对含焊接错边压力管道进行安全性评价分析。本文对于缺少因子Rbs的API579推荐的安全评价方法,建立各类焊接错边缺陷的三维模型,采用Ansys进行有限元分析得出各类缺陷的不确定因子Rbs的表达方式,得到完整的安全评价方法,根据对应的计算方法编写评价程序,并使用编写的评价软件对扬巴公司现场的缺陷构件进行安全性评价,评价结果与构件实际的可靠性一致。结果表明,使用本文开发的评价软件,只需在软件的界面输入相关的数据,即可立刻得出可靠性评价结果,具有可靠性高、成本低、高效便捷的优点。
[Abstract]:In the installation of pressure pipeline, due to the limitation of welding conditions, there are welding defects in the joint of the pipeline, which are common and difficult to avoid. The existence of the wrong edge will cause the local stress concentration, and then affect the safety of the pipeline. Therefore, it is necessary to evaluate and analyze the safety of the pressure pipeline with welded staggered edges. In this paper, for the safety evaluation method recommended by API579, which lacks factor Rbs, the 3D model of all kinds of weld edge defects is established, and the expression mode of uncertain factor Rbs of various defects is obtained by using Ansys finite element analysis. A complete safety evaluation method is obtained and the evaluation program is compiled according to the corresponding calculation method. The evaluation software is used to evaluate the safety of defective components in Yangba Company. The evaluation results are consistent with the actual reliability of the components. The results show that using the evaluation software developed in this paper, the reliability evaluation results can be obtained immediately by inputting relevant data into the software interface, which has the advantages of high reliability, low cost and high efficiency and convenience.
【作者单位】：四川理工学院机械工程学院;
【基金】：四川省教育厅重点项目(14ZA0209) 四川理工学院培育项目(2012PY07);四川理工学院研究生创新基金(y2015001)
【分类号】：TP311.52;TQ055.81

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