中国舰船研究2024，Vol.19Issue(4)：186-192,7.DOI:10.19693/j.issn.1673-3185.03616
掺氢环境下含腐蚀缺陷X52天然气管道的结构强度失效机理研究
Structural strength failure mechanism of X52 natural gas pipeline with corrosion defects under hydrogen-blended environment
摘要
Abstract
[Objective]This study aims to explore the structural strength deterioration mechanism of pipe-lines with corrosion defects in hydrogen-blended environments.[Methods]Based on the experimental data,an analysis is made of the load bearing performance of X52 steel under different levels of hydrogen blending,and the structural strength failure mechanism of an X52 hydrogen-blended natural gas pipeline under different corrosion defects is described using the nonlinear finite element method.[Results]When the hydrogen blend level increases to 50.0%,under a combined load,the pipeline reaches minimum displacement failure at 2.58 mm,and the structural toughness deteriorates to a greater degree;at a hydrogen blend level of 25.0%,the defect depth is greater and the degree of structural failure more serious;comparing square and circular defects,the maximum stress of the square defects is higher than that of the circular defects.[Conclusions]The ma-terial property-based defective pipeline model can realize the assessment of the structural bearing capacity de-terioration of natural gas pipelines under different hydrogen-blending conditions,providing engineering sug-gestions for the design and health monitoring of new energy pipelines.关键词
氢能/掺氢天然气管道/腐蚀缺陷/非线性有限元方法/劣化程度Key words
hydrogen energy/hydrogen-blended natural gas pipeline/corrosion defect/nonlinear finite ele-ment methods/degree of deterioration分类
交通工程引用本文复制引用
曹宇,陈鹏,杨建功,王德强,白勇..掺氢环境下含腐蚀缺陷X52天然气管道的结构强度失效机理研究[J].中国舰船研究,2024,19(4):186-192,7.基金项目
大连理工大学工业装备结构分析国家重点实验室开放课题基金资助项目(GZ22113) （GZ22113）
