摘要
为研究火灾中球罐应力场分布情况,找到球罐失效破裂条件,以液化石油气为研究对象,基于球罐稳态热响应,通过ANSYS热-结构耦合有限元分析法进行研究。结果表明:充装率85%的液化石油气球罐最高温度部位出现在气相区,约619.66℃;最大应力值出现在气液交界处,约615.18 MPa;得到球罐破裂失效时温度值和应力值,并设置2次预警值。研究结果可为液化石油气储罐失效预警提供参考和判定依据。
Taking the LPG spherical tank in the pool fire environment as the research object,based on the steady-state thermal response of spherical tank,the ANSYS thermal-structural coupling finite element analysis method was used to study the stress field distribution of spherical tank in the fire and find the failure and rupture conditions of spherical tank.The results showed that the highest temperature of LPG spherical tank with a filling rate of 85%occurred at the gas phase zone,which was about 619.66℃.The maximum stress value appeared at the location of gas-liquid junction,about 615.18 MPa.On this basis,the temperature and stress values at the failure and rupture time of spherical tank were obtained,and the two warning values were set.The experimental results in this paper can provide certain data reference and judgment basis for the failure warning of LPG storage tanks.
作者
李伟东
陈明哲
李玉
韩帅
LI Weidong;CHEN Mingzhe;LI Yu;HAN Shuai(China People’s Police University,Langfang Hebei 065000,China;Dongying Fire Rescue Detachment,Dongying Shandong 257000,China;Dezhou Fire Rescue Detachment,Dezhou Shandong 253000,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2021年第2期91-97,共7页
Journal of Safety Science and Technology
基金
国家重点研发计划项目(2016YFC0800609)
中国人民警察大学博士科研创新计划项目(BSKY2018001)
中国人民警察大学国家自然基金培育课题项目(ZKJJPY201805)。
关键词
池火灾
液化石油气球罐
热力学响应
失效判定
pool fire
liquefied petroleum gas(LPG)spherical tank
thermodynamic response
failure determination