喷射火环境下石化管廊管道失效特征试验研究  被引量:5

Experimental study on failure features of petrochemical pipelines under jet fire

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作  者:周宁 吴露露 李雪 李徐伟 时静洁 曹林林 ZHOU Ning;WU Lulu;LI Xue;LI Xuwei;SHI Jingjie;CAO Linlin(School of Petroleum Engineering,Changzhou University,Changzhou Jiangsu 213164,China;School of Environmental and Safety Engineering,Changzhou University,Changzhou Jiangsu 213164,China)

机构地区:[1]常州大学石油工程学院,江苏常州213164 [2]常州大学环境与安全工程学院,江苏常州213164

出  处:《中国安全科学学报》2022年第1期135-141,共7页China Safety Science Journal

基  金:江苏省“六大人才高峰”创新人才团队项目(TD-JNHB-013);江苏省研究生培养创新工程研究生科研与实践创新计划(KYCX20_2576);江苏省研究生培养创新工程研究生科研与实践创新计划(SJCX20_0986);江苏省高等学校自然科学研究面上项目(19KJB620002)。

摘  要:为探究喷射火灾下石化管廊管道热力学响应特征,依据流体力学相似理论搭建缩比试验平台,开展石化管廊管道热力学响应试验研究。通过分析火灾中管道热力学响应特征及事故多米诺演化特征,探讨各因素对管道升温和失效的影响程度,并结合强度理论建立管道失效时间定量计算模型。研究结果表明:火灾功率是管道失效的主导因素,随着火灾功率的增大,管道失效时间缩短;水平方向喷射火影响程度最大,相较于垂直方向喷射火管道峰值温度提升近一倍;多喷射火源下火焰强度、覆盖范围急剧增加,受火管道峰值温度达到800℃,钢结构管道强度基本丧失;液相介质会加速管道失效,且管道压力、管道尺寸、距火源远近程度对管道失效影响显著。In order to explore thermodynamic response law of petrochemical pipelines under jet fire,a scale-up test platform was built according to similarity theory to carry out experimental study on this topic.Based on analysis on pipelines'thermodynamic response and domino evolution in fire,influence of various factors on their temperature rise and failure was discussed,and a quantitative calculation model of pipeline failure time was established by adopting strength theory.The results show that fire power is a dominant factor of pipeline failure,along with its increase,failure time will be shortened.Horizontal jet fire has the greatest impact,and the peak temperature of pipeline is nearly doubled compared with the case of vertical jet fire.Under the situation of multiple jet fire sources,flame intensity and coverage area increase sharply,while peak temperature reaches as far as 800℃,resulting in failure of steel structure pipelines'strength.Liquid medium will accelerate pipeline failure,and pipeline pressure,size,distance from fire source all have significant influence on its failure.

关 键 词:喷射火 石化管廊 热响应 管道失效 火灾功率 

分 类 号:X937[环境科学与工程—安全科学]

 

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