瓦斯爆炸冲击波在单向分叉管道内的传播规律试验研究  

Experimental study on propagation law of gas explosion shock wave in one-way bifurcated pipeline

作　　者：贾智伟[1] 许胜铭[1] 景国勋[1] 

机构地区：[1]河南理工大学安全科学与工程学院

出　　处：《中国安全科学学报》2015年第12期51-55,共5页China Safety Science Journal

基　　金：国家自然科学基金资助(51174080);河南理工大学博士基金资助(B2009-20)

摘　　要：为研究瓦斯爆炸冲击波在单向分叉管道内的传播规律,建立瓦斯爆炸试验管道系统,进行瓦斯爆炸试验。根据试验结果,分析单向分岔管道分岔前的超压、分岔角度对管道内冲击波传播的影响。所得研究结论是:管道分叉角度不变时,冲击波超压越大,直线管道超压衰减系数和支线管道超压衰减系数越大。冲击波超压不变时,增大单向分叉管道角度,支线管道冲击波超压衰减系数变大,直线管道衰减冲击波超压系数变小,体现了支线和直线管道内冲击波的分流作用;支线管道的分叉角度越大,对直线管道的分流作用越小。For the sake of studying the propagation law of gas explosion shock wave in one way bifurcated pipe,a gas explosion piping test system was established and used for carrying out gas explosion experiments. Effects of the initial pressure and the bifurcation angle on the propagation of the shock wave in the pipeline were studied. It was concluded that under the condition of constant pipe branch angle,the greater the initial pressure,the bigger the overpressure attenuation coefficient in straight pipeline and the overpressure attenuation coefficient in branched pipeline,that under the condition that the initial impact of the shock wave is constant,the greater the bifurcation angles of the one-way pipeline,the bigger the overpressure attenuation coefficient in branched pipeline,the smaller the overpressure attenuation coefficient in straight pipeline,and that the greater the bifurcation angle of branch pipeline,the smaller the diversion effect.

关 键 词：瓦斯爆炸 衰减系数 分流作用 冲击波 传播特性 

分 类 号：X932[环境科学与工程—安全科学]