浮顶储罐环形池火轴向温度分布研究  

Research on axial temperature distribution of annular pool fires of floating roof tanks

作　　者：张亦翔 李玉星[1,2] 朱建鲁 杨玉锋[3] ZHANG Yixiang;LI Yuxing;ZHU Jianlu;YANG Yufeng(College of Pipeline and Civil Engineering,China University of Petroleum,Qingdao Shandong 266580,China;Shandong Provincial Key Laboratory of Oil and Gas Storage and Transportation Safety,Qingdao Shandong 266580,China;Petro China Pipeline Science&Technology Research Center,Langfang Hebei 065000,China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [2]山东省油气储运安全省级重点实验室,山东青岛266580 [3]中国石油天然气股份有限公司管道分公司管道科技研究中心,河北廊坊065000

出　　处：《中国安全科学学报》2019年第8期61-66,共6页China Safety Science Journal

基　　金：国家重点研发计划(2016YFC0802104,2017YFC0805800);山东省重点研发计划(2017GSF220007)

摘　　要：为提高大型浮顶储罐的消防应急能力,利用乙醇开展3组环形池火燃烧试验。首先测量池火燃烧的质量损失速率、轴向温度和温度场分布等参数;然后将试验温度测量值与经典羽流模型计算值进行对比;最后修正羽流轴线温度计算模型。结果表明:环形池火出现火焰融合阶段,导致池火的燃烧速率相对于圆形液池(0.62 g/s)分别增加8.1%和48.4%;火焰的轴向温度均呈现先增大后减小的趋势,导致燃烧的最高温度在火焰轴线高度的20%~60%处,得到的修正模型计算值与实测温度更加吻合;在热成像图中融合火焰产生的热气流会增强对外界的热扩散危害。In order to improve fire emergency response ability of large floating roof tanks,three annular pool fire tests are conducted by using ethanol.Firstly,the mass loss rate,axial temperature and flame distribution of pool fires were measured.Then a comparison was made between the measured temperature and the calculation from traditional plume models.Finally,the calculation model of plume axis temperature was modified.The results show that the burning rate of annular pool fire increases by 8.1%and 48.4%compared with that in circular pool fire(0.62 g/s)as it comes to fusion combustion stage;the axial flame temperature increases first and then decreases,resulting in a maximum temperature between 20%-60%of flame height,and the calculated values obtained from the modified model are more consistent with the measured temperature;the thermal steam flow generated by the fusion flame in infrared camera will increase the hazards of thermal diffusion to external conditions.

关 键 词：环形池火 融合火焰 燃烧速率 轴线温度 修正模型 

分 类 号：X932[环境科学与工程—安全科学]