水平管道截面积突然扩大对冲击波传播的影响  

The Effect of Suddenly Extended Cross-sectional Area of Horizontal Pipe on the Explosion Shock Wave Propagation

作　　者：蔺照东[1] 李如江[1] 陈兴[1] 王喜 

机构地区：[1]中北大学化工与环境学院,山西太原030051 [2]西安物华巨能爆破器材有限责任公司,陕西西安710061

出　　处：《煤矿安全》2014年第5期141-143,147,共4页Safety in Coal Mines

摘　　要：初步探究水平管道截面积突然扩大对甲烷爆炸冲击波传播特性的影响。实验中,在水平管道不同位置处设置了扩充管道,并测试了扩充管道不同位置处的火焰传播速度、爆炸压力以及爆炸压力上升速度,对管道截面积突然扩大影响爆炸冲击波传播的原因进行了分析。结果表明:扩充管道的设置明显影响了爆炸冲击波的传输,管道截面积突然变大使气体膨胀导致明显的爆炸冲击波超压衰减。This article presents the effect of suddenly extended cross - sectional area of horizontal pipe on the methane explosion shock wave propagation characteristics. In the experiment, the expansion pipe is arranged at different locations of the horizontal pipe, and the flame propagation speed, the explosion pressure and the explosion pressure rising rate over the expansion pipe has been determined to reveal the effect of suddenly extended cross - sectional area of horizontal pipe on the methane explosion shock wave propagation. The results show that the transmission of shock wave from the explosion is greatly affected by the suddenly extended cross - sectional area of horizontal pipe because the extending of the cross - sectional area of horizontal pipe results in the apparent gas expansion that leads to the obvious attenuation of shock wave explosion overpressure.

关 键 词：水平管道 扩充管道 形状 火焰传播速度 爆炸压力 

分 类 号：TD712.7[矿业工程—矿井通风与安全]