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| 液化石油气点火能试验及爆炸火焰传播分析 | |
| 引用本文： | 邵辉,段国宁,邵峰,王春华,侯丽娟.液化石油气点火能试验及爆炸火焰传播分析[J].中国安全科学学报,2011,21(8). |
| 作者姓名： | 邵辉 段国宁 邵峰 王春华 侯丽娟 |
| 作者单位： | 1. 常州大学环境与安全工程学院,江苏常州,213164 2. 安徽财贸职业学院电子信息系,安徽合肥,230601 3. 中盐常州化工股份有限公司安保部,江苏常州,213200 |
| 基金项目： | 2009年江苏省科技支撑计划 |
| 摘 要： | 为研究液化石油气体积分数与点火能的关系以及爆炸火焰的传播过程,在实验室应用特制的爆炸试验装置,采用调节点火能和液化石油气体积分数的方法,进行一系列爆炸试验,并使用高速摄像机记录爆炸的动态过程。试验结果表明,当液化石油气的试验爆炸体积分数在5%～9%时,其体积分数与点火能之间呈现比较平缓的变化关系,而当其体积分数小于5%或大于9%时,体积分数的稍微变化,其点火能将发生显著的变化。爆炸过程图像分析显示,在爆炸初期,火焰阵面的微分加速起主导作用。随着火焰从点火源位置向四周扩散,光滑的层流火焰开始逐步"湍流化",火焰阵面出现皱折,燃烧面积增加,火焰传播速度逐渐上升直至最大值。在整个过程中,火焰阵面出现非稳定的加速。 |
| 关 键 词： | 液化石油气 爆炸体积分数 点火能 火焰结构 火焰加速 传播机理 |
Experiment on Ignition Energy of LPG and Analysis on Flame Propagation of Explosion |
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| SHAO Hui,DUAN Guo-ning,SHAO Feng,WANG Chun-hua,HOU Li-juan.Experiment on Ignition Energy of LPG and Analysis on Flame Propagation of Explosion[J].China Safety Science Journal,2011,21(8). | |
| Authors: | SHAO Hui DUAN Guo-ning SHAO Feng WANG Chun-hua HOU Li-juan |
| Institution: | SHAO Hui1 DUAN Guo-ning1 SHAO Feng2 WANG Chun-hua3 HOU Li-juan1(1 Department of Environment and Safety Engineering,Changzhou University,Changzhou Jiangsu213164,China 2 Department of Electron and Information,Anhui Finance & Trade Vocational College,Hefei Anhui230601,China 3 Security Department,Salt Chemical Co.,Ltd.Changzhou,Changzhou Jiangsu213200,China) |
| Abstract: | The relation between volume fraction of LPG and ignition energy and analysis on fame propagation of explosion were studied.A series of explosion experiments were conducted based on a special device by adjusting volume fraction of LPG to ignition energy.The high-speed camera was used to record the dynamic process of LPG explosion.The results show that the relation between volume fraction and ignition energy changes slowly when the volume fraction of LPG explosion is amongst 5%-9%,and any slight changes of vo... |
| Keywords: | liquefied petroleum gas(LPG) explosion volume fraction ignition energy flame structure flame acceleration mechanism of flame propagation |
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