圆孔障碍物对压力重叠影响的实验研究  

Experimental study on the influence of circular hole obstacles on pressure overlap

作　　者：马云龙 MA Yunlong(China Coal,Technology and Engi.neering Group Shenyang Research Institute,Fushun 113122,China;State Key Lahoratory of Coal,Mine Safety Technology,Fushun 113122,China)

机构地区：[1]中煤科工集团沈阳研究院有限公司检测分院,辽宁抚顺113122 [2]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《煤矿安全》2022年第7期70-73,共4页Safety in Coal Mines

摘　　要：为了研究圆孔障碍物对压力重叠的影响,利用爆炸测试系统,对不同的圆孔障碍物进行实验,获得了不同的甲烷空气爆炸传播过程。对爆炸过程分析表明:圆板孔尺寸与压力上升速率成指数关系;当圆板中间孔直径为16 mm时,爆炸压力最大为1.129 MPa,当圆板中间孔直径为160 mm时,爆炸压力最小为0.290 MPa:当圆板中间孔直径小于70%的管道内径,便会发生压力重叠。In order to study the influence of circular hole obstacles on pressure overlap, different circular hole obstacles were tested to obtain different methane air explosion propagation process by explosion test system. The analysis of the explosion process shows that the size of the round plate has an exponential relationship with the rate of pressure rise;when the size of the round hole is 16 mm, the maximum explosion pressure is 1.129 MPa;when the size of the round plate is 160 mm, the minimum explosion pressure is 0.290 MPa;when the size of the round hole is less than 70% of the inner diameter of the pipe, the pressure overlap will occur.

关 键 词：隔爆外壳 压力重叠 圆孔障碍物 甲烷爆炸 GB3836.2 

分 类 号：TD684[矿业工程—矿山机电]