储氢高压容器钢壁中氢的浓度分布规律研究  

Research into hydrogen content distribution in the steel wall of hydrogen deposited pressure vessel

作　　者：柳爱群[1] 杨中[1] 杨烨[2] 

机构地区：[1]鲁东大学土木工程学院,烟台264025 [2]湖南大学建筑学院,长沙410012

出　　处：《计算力学学报》2013年第S1期7-9,15,共4页Chinese Journal of Computational Mechanics

摘　　要：储氢高压容器中的氢通过渗透会进入容器钢壁并在钢壁中扩散,最终透过容器外表面进入容器存放环境中。在容器钢壁中的氢会引起材料力学性能变化,从而引起容器承载能力变化。要认识这些变化,首先就要了解氢在钢壁中的渗透、扩散规律和浓度的瞬态分布规律。针对球形高压容器外表面满足一般传质边界条件的情况,建立求解容器壁中氢浓度的解析理论模型,导出了容器壁中瞬态氢浓度和渗透到环境中的氢累积量的理论公式。通过解析计算,给出了器壁中氢浓度和氢在环境中的累积渗透量随时间的变化曲线,分析了相应的变化规律。这些公式和规律性认识为后续的容器壁材料力学性能分析和容器承载能力评估提供了前提。Through permeation,hydrogen diffuses in the steel wall of a high pressure vessel,and further diffuses over the wall into the environment.Hydrogen in the steel wall can make the material mechanical properties change.A theoretical model of hydrogen permeation in the steel wall of a high pressure vessel whose outer surface is with a general condition of mass transfer was developed and formulas of hydrogen content in the steel wall and permeation amount into the environment were deduced.Through analytic calculations,curves of hydrogen content in steel wall versus radius and time and accumulative permeation amount versus time were theoretically plotted.These results can be used as premise of analyses of material mechanical properties.

关 键 词：球形压力容器 钢壁 氢 扩散 浓度分布 

分 类 号：TH49[机械工程—机械制造及自动化]