点火能量对瓦斯爆炸火焰传播速度的影响
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摘要
在封闭的DN700 mm管道的瓦斯-空气混合气体中,进行了不同点火能量条件下的瓦斯爆炸传播试验,试验结果表明:瓦斯爆炸火焰传播速度从起爆位置开始随着传播距离的加长而逐渐增大,在靠近出口附近处达到最大值;点火能量越大,火焰传播速度也越大;在点火能量一定时,瓦斯爆炸火焰传播速度与管道长径比呈对数函数关系;在管道长径比一定时,瓦斯爆炸火焰传播速度与点火能量呈二次函数关系。
A gas explosion travel experiment was conducted in a closed pipeline of DN700 mm with gas-air mixed gas under the conditions of the different ignition energy.The experiment results showed that the flame travel speed of the gas explosion from the explosion location would be steadily increased with the travel distance increased and the max value of the flame travel speed would be reached at the location near the exit.The higher ignition energy was and the higher flame travel speed would be.When the ignition was certain,the flame travel speed of gas explosion and pipeline length and diameter ration would be in a logarithmic function relationship.When the pipeline length and diameter ratio was certain,the flame travel speed of gas explosion and ignition energy would be in a quadratic function relationship.
A gas explosion travel experiment was conducted in a closed pipeline of DN700 mm with gas-air mixed gas under the conditions of the different ignition energy.The experiment results showed that the flame travel speed of the gas explosion from the explosion location would be steadily increased with the travel distance increased and the max value of the flame travel speed would be reached at the location near the exit.The higher ignition energy was and the higher flame travel speed would be.When the ignition was certain,the flame travel speed of gas explosion and pipeline length and diameter ration would be in a logarithmic function relationship.When the pipeline length and diameter ratio was certain,the flame travel speed of gas explosion and ignition energy would be in a quadratic function relationship.
引文
[1]《煤矿瓦斯治理与利用总体方案》编写小组.煤矿瓦斯治理与利用总体方案[M].北京:地震出版社,2005.
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[2]徐景德,徐胜利,杨庚宇.矿井瓦斯爆炸传播的实验研究[J].煤炭科学技术,2004,32(7):55-57.
[3]王海燕,周心权,曲志明.瓦斯爆炸燃烧波与冲击波相互关系及影响研究[J].煤矿安全,2008,39(4):1-4.
[4]赵衡阳.气体和粉尘爆炸原理[M].北京:北京理工大学出版社,1996.
[5]司荣军.矿井瓦斯煤尘爆炸传播规律研究[D].泰安:山东科技大学,2007.
[6]林柏泉,崔恒信.矿井瓦斯防治理论与技术[M].徐州:中国矿业大学出版社,1998.
[7]童宇.井下巷道内瓦斯爆炸阻爆技术研究[D].太原:中北大学,2009.
[8]徐景德,杨庚宇.置障条件下的矿井瓦斯爆炸传播过程数值模拟研究[J].煤炭学报,2004,29(1):53-56.
[9]韩德刚,高盘良.化学动力学基础[M].北京:北京大学出版社,1998.
[10]肖丹.受限空间瓦斯爆炸特性及影响因素研究[D].阜新:辽宁工程技术大学,2006.
[11]王磊.瓦斯浓度对瓦斯爆炸传播的影响研究[D].北京:煤炭科学研究总院,2009.
[12]刘导治.计算流体力学基础[M].北京:北京航空航天大学出版社,1989.
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