煤矿安全2023，Vol.54Issue(12)：1-10,10.DOI:10.13347/j.cnki.mkaq.2023.12.003
惰性气体参数对瓦斯爆燃火焰传播抑制效果的研究
Experimental study on inhibition effect of inert gas parameters on gas deflagration flame propagation
摘要
Abstract
In this paper,we continue to build an ultra-high speed laser schlieren testing system on the self-developed mesoscale ex-plosion pipeline to explore the flame propagation characteristics of nitrogen and carbon dioxide inhibiting gas/air premixed gas de-flagration under different injection positions and pressures.The results show that:in the experiment of inert gas inhibiting gas/air premixed gas deflagration,with the gradual increase of injection pressure,the flame propagation speed shows a trend of first increas-ing and then decreasing,the flame shape also gradually stretches and deforms from fingertip shape,and the middle protruding part becomes smaller until it is nearly flat;the maximum flame propagation speed of CO2 injection near the ignition end is 20.79%lower than that of N2 injection far away from the ignition end,and 20.25%lower than that of N2 injection;when CO2 is injected far from the ignition end,the minimum flame speed is 9.68%lower than that of CO2 injection,and 12.86%lower than that of N2 injection;compared with the two kinds of flame retarding and explosion inhibition gases,the highest flame propagation speed of CO2 sprayed near the ignition end is 21.78%lower than that of N2,and the lowest flame propagation speed is 1.82%lower than that of N2.The highest flame velocity and the lowest flame velocity are 21.25%and 5.27%lower than N2 when CO2 is sprayed at the far ignition end.关键词
瓦斯爆燃/惰性气体/阻燃抑爆/火焰传播/激光纹影Key words
gas deflagration/inert gas/flame retardant and explosion suppression/flame propagation/laser schlieren分类
矿业与冶金引用本文复制引用
胡洋,杨雨欣,石云东,吕硕,陶红..惰性气体参数对瓦斯爆燃火焰传播抑制效果的研究[J].煤矿安全,2023,54(12):1-10,10.基金项目
中央引导地方科技发展资金资助项目(226Z1708G) （226Z1708G）
爆炸科学与技术国家重点实验室开放基金资助项目(KFJJ15-15 m) （KFJJ15-15 m）
国家自然科学基金资助项目(51974126) （51974126）
