压力容器2025，Vol.42Issue(1)：43-53,11.DOI:10.3969/j.issn.1001-4837.2025.01.006
新型车载液氢容器绝热结构设计与分析
Design and analysis of thermal insulation structure of new on-board liquid hydrogen vessel
摘要
Abstract
To develop a novel on-board liquid hydrogen vessel,this study compared the structural characteristics of LNG vessels and proposed a new design for the liquid hydrogen vessel from the perspectives of support structure,insulation layer,and pipeline layout.Strength and heat transfer models of the vessel were established to analyze its structural integrity and thermal insulation performance.Prototype samples were fabricated for daily evaporation rate testing.Results indicate that during vehicle operation,radial loads exert the highest impact on the structure,with the most critical regions being the root of the support neck pipe and the connection between the vacuum chamber and inner vessel head.Within an ambient temperature range of 233～333 K,the heat leakage through the support structure increases gradually with temperature.S-shaped pipelines demonstrate lower heat leakage compared to arc-shaped pipelines,with a heat leakage increment of 0.12 W per temperature rise.Experimental measurements show a daily evaporation rate(using liquid nitrogen as the test medium)below 1%,with a 0.3%deviation from simulation results.Heat leakage from the support structure accounts for approximately 52%of the total.The proposed support structure meets both strength and heat leakage requirements,providing technical guidance and theoretical references for developing large-capacity liquid hydrogen vessels.关键词
液氢容器/支撑结构/漏热量/有限元分析Key words
liquid hydrogen vessel/support structure/heat leakage/finite element analysis分类
机械制造引用本文复制引用
徐敬,秦超,徐理善,刘发安,李超,马树辉,刘培启..新型车载液氢容器绝热结构设计与分析[J].压力容器,2025,42(1):43-53,11.基金项目
中央高校基本科研业务费资助项目(DUT24ZD204) （DUT24ZD204）
