密闭空间甲烷-空气混合物爆炸传播过程研究  

Study on Explosion Propagation Process of Methane-Air Mixture in Confined Space

作　　者：谭迎新 于硕 韩意[2] 

机构地区：[1]中北大学环境与安全工程学院 [2]中国人民解放军63961部队

出　　处：《中北大学学报（自然科学版）》2017年第5期605-608,共4页Journal of North University of China(Natural Science Edition)

基　　金：山西省重点研发计划项目资助(201603D121012)

摘　　要：利用自行研制的管道式气体粉尘爆炸试验装置,研究了管道内甲烷-空气混合物的爆炸过程,对爆炸过程进行了模拟仿真.研究得到的仿真模拟结果与实验数据的偏差<12%,与文献数据基本吻合.试验研究表明:试验管道的长径比L/D较小时对管道内火焰的加速效应有限,不同时刻管道内压力波集中在火焰面前方一个很薄的区域内,随着火焰从左向右传播,最终在管道右端达到最大压力0.92 MPa;密闭空间内,气体爆炸最大压力值的大小与点火位置无关.A pipe device was self-designed.The explosion propagation process of methane-air mixture in confined space was studied by experimental test and analog simulation.The error between analog simulation result and experimental data was less than 12%.They were all close to the literature data.Test study indicates,when the ratio of length and diameter（L/D）was lower,the flame can be not accelerated.The pressure wave was focused in a very thin area in the front of flame.With flame propagation from left to right,the maximum explosion pressure of methane-air mixture was up to 0.92 MPa.The maximum explosion pressure value have nothing to do with pipe ignition point in confined space.

关 键 词：气体爆炸 甲烷 爆炸压力 火焰传播 

分 类 号：X932[环境科学与工程—安全科学]