煤矿安全2025，Vol.56Issue(4)：19-25,7.DOI:10.13347/j.cnki.mkaq.20231850
N2-水雾气液两相耦合抑制甲烷爆炸特性研究
Study on characteristics of methane explosion suppression by N2-water mist gas-liquid two-phase coupling
摘要
Abstract
To investigate the effect of N2-water mist gas-liquid two-phase coupling on the propagation of methane explosion flames,based on a self-made mesoscale shock wave pipeline,we investigate the effect of N2 at different injection pressures on the propaga-tion of methane explosion flames,and visualize the flame propagation process of N2 and water mist at different injection positions by Fluent.The results show that the performance of N2 explosion suppression is closely related to its injection pressure.When sprayed pressure is 3.5 MPa,the flame propagation speed is greatly reduced,and the explosion begins to be suppressed.The N2 sprayed into the pipeline ito the pipeline is influenced by the flame movement and is mostly pushed downstream to mix with methane premixed gas,diluting methane concentration.N2 relative to water mist will first diffuse and dilute methane concentration,and then the two-phase coupling will suppress the acceleration mechanism of flame wave and pressure wave mutual promotion;the explosion suppres-sion effect of water mist and N2 staggered injection is better than that of parallel injection and opposite injection.关键词
甲烷爆炸/气液两相/抑爆/Fluent/火焰传播Key words
methane explosion/gas-liquid two phase/explosion suppression/Fluent/flame propagation分类
矿业与冶金引用本文复制引用
张莉聪,李斯曼,徐景德..N2-水雾气液两相耦合抑制甲烷爆炸特性研究[J].煤矿安全,2025,56(4):19-25,7.基金项目
中央高校基本科研业务费资助项目(3142016004) （3142016004）
应急管理部工业安全事故分析与监测预警重点实验室开放基金资助项目(F2302) （F2302）
国家自然科学基金面上资助项目(51874134) （51874134）
