X52M螺旋缝埋弧焊钢管输氢关键技术研究

Research on Key Technologies for the Hydrogen Transmission in X52M SAWH Steel Pipe

对输氢管道的国内外标准进行梳理,对比各类标准对输氢工况下管道选材的相关要求,对国内外输氢管道已建工程的管材选用情况进行整理,总结出X52及以下钢级在输氢管道中的适用性。对X52M卷板及螺旋缝埋弧焊管材进行了试制,并对标准卷板、试制卷板及试制螺旋缝埋弧焊管材开展了氢环境下的适用性评价,评价结果显示,X52M螺旋缝埋弧焊钢管在输氢管道上的应用是可行的,但需根据氢相容性要求,对化学元素、硬度、夹杂及晶粒度等性能提出更高的要求。对站场、站外输氢管道在不同地形地貌、管径、壁厚及组焊方式下的焊接方式适用性进行了总结,同时给出了氢环境下的特殊要求。

Both domestic and foreign codes for hydrogen pipelines were discussed,including having their requirements for selecting the hydrogen pipelines compared and the pipeline materials applied in the in-service projects put in order and the applicability of X52 in hydrogen pipeline summarized.In addition,the trial production of X52M strap and SAWH pipe was implemented and the applicability of both standard strap and trial strap in hydrogen environment was evaluated to show that,through considering hydrogen compatibility,applying X52M SAWH pipe to the hydrogen pipeline is feasible and higher requirements for chemical elements,hardness,inclusion and grain size become necessary.Meanwhile,the applicability of welding methods for hydrogen transmission pipeline under different terrains,pipe diameters,wall thickness and assembly welding methods were summarized and the special requirements under hydrogen environment were proposed.