压力容器2016，Vol.33Issue(12)：41-48,8.DOI:10.3969/j.issn.1001-4837.2016.12.007
大型LNG全容罐泄放阀火灾安全性分析
Safety Analysis for Relief Valve Fire of LNG Full Containment Tanks
摘要
Abstract
The analysis method for relief valve fire of LNG full containment tanks was proposed based on the heat radiation theory and bearing capacity evaluation of concrete structures.First the thermal analysis model including fire heat radiation was established by ANSYS.Based on the FE model,the temperature variation tendency of LNG tank in the case of relief valve fire lasting 6 hours were obtained through transient heat transfer method.Then the thermal results acted as the temperature boundary conditions were applied to the structural analysis model by thermal-structural coupling method,and the mechanical results in fire condition were calculated.Finally,the bearing capacity of roof structure and the stresses of the pres tressing tendons in the case of relief valve fire were verified.The results show that the temperature of roof outer increases rapidly because of the relief valve fire,and part of the concrete structure splited due to the high temperature,but the overall structure of LNG tank can meet the safety requirements.关键词
LNG全容罐/泄放阀火灾/辐射分析/热固耦合Key words
LNG full containment tank/relief valve fire/radiation theory/thermal-structural coupling analysis分类
机械制造引用本文复制引用
张超,陈团海,彭延建..大型LNG全容罐泄放阀火灾安全性分析[J].压力容器,2016,33(12):41-48,8.基金项目
中国海油总公司课题“大型LNG储罐结构设计软件开发”资助项目(CNOOC-KJ 135 KJXM QD 2016-002) （CNOOC-KJ 135 KJXM QD 2016-002）
