输氢管道钢管研究进展

Progress of Research on Steel Pipe for Hydrogen Transmission Pipeline

简述了国内外纯氢及掺氢输送管道的建设现状、输氢管道技术规范的发展现状以及国内外氢气系统的储存、输送、管道设计、临氢材料的试验和评价等。指出随着材料的强度、易于形成偏析的化学元素含量、夹杂物的尺寸和数量、氢气的压力和纯度等的提高,材料的氢脆敏感度增大。焊接钢管的焊接接头等薄弱部位会提高管道的氢脆敏感性;输氢管道的选材应关注钢材纯净化,化学成分设计,非金属夹杂物形态、组织偏析和带状组织控制,涂层方式等。

Briefed in the paper are the current statuses of the constructions of the linepipes for pure hydrogen and hydrogen mixed gas transmission at home and abroad,the current development situation of the technical specifications for hydrogen transport pipelines as well as storage,transport,pipeline design,testing and evaluation of pro-hydrogen materials for domestic and foreign hydrogen systems.Accordingly it is regarded that along with the increases of the strength of the material,the content of the chemical elements that easily form segregation,the size and quantity of the inclusions,and the pressure and purity of hydrogen,etc.,the sensitivity of hydrogen embrittlement increases;and the weak parts such as the weld joint of the welded pipe also increases the sensitivity of hydrogen embrittlement of the pipeline.Furthermore it is recommended that the selection of the materials for the hydrogen transmission pipeline should focus on factors concerning the steel goods,including the cleanness,the chemical composition design,controls of the non-metallic inclusion morphology,the microstructure segregation and the banded microstructure,and the coating method,etc.