摘要
单位面积内的抑爆剂浓度是影响瓦斯爆炸抑制效果的关键因素。为研究抑爆剂面密度对瓦斯爆炸传播抑制效果的影响,在500 mm爆炸管道内开展了5种不同面密度抑爆剂作用下的抑爆实验。研究表明:ABC超细干粉灭火剂对爆炸火焰的抑制作用较对爆炸压力的衰减作用更明显,实验中爆炸压力降幅最高为57.6%,火焰速度降幅最高达100%。抑爆效果随抑爆剂面密度的增大而增强,只有当抑爆剂面密度大于临界值时,爆炸压力与火焰才能同时得到有效控制,实验中测得的临界面密度为40.8 kg/m^2。
The explosion suppression agent concentration of unit area is a key factor affecting gas explosion suppression effect. To study the effect of surface density of explosion suppression agent on inhibiting effect of gas explosion propagation,we carried out explosion suppression experiment in a 500 mm pipeline under the action of five kinds of different surface density of explosion suppressant agent.The results show that the inhibiting effect of ABC superfine powder extinguishing agent on explosion flame is more obvious than the attenuation effect on explosion pressure; the decreasing amplitude of explosion pressure is up to 57. 6% in the experiments,and the flame speed is up to 100%. Explosion suppression effect is enhanced with the increase of surface density of explosion suppression agent,the explosion pressure and flame can be effectively controlled only when the surface density of explosion suppressant is higher than the critical value,and the measured surface density was 40. 8 kg/m^2.
出处
《煤矿安全》
CAS
北大核心
2016年第12期168-171,共4页
Safety in Coal Mines
基金
中煤科工集团科技创新基金资助项目(2014MS007)
中煤科工集团重庆研究院有限公司青年创新基金资助项目(2014QNJJ03)
关键词
瓦斯爆炸
火焰速度
压力峰值
ABC干粉灭火剂
抑爆剂面密度
gas explosion
flame speed
peak pressure
ABC dry powder extinguishing agent
surface density of explosion suppression
