封闭管道内瓦斯爆炸引燃瓦斯二次爆炸特性实验研究
Experimental study on characteristics of gas secondary explosion induced by gas explosion in closed pipeline
姚祺 1江丙友 1苏明清 2王培龙 3李静静 1丁大伟 1洪汉1
作者信息
- 1. 安徽理工大学 安全科学与工程学院,安徽 淮南 232001
- 2. 中国安全生产科学研究院,北京 100012
- 3. 安徽金浦新能源科技发展有限公司,安徽 淮北 235000
- 折叠
摘要
为了研究不同前段瓦斯体积分数、不同后段瓦斯体积分数和不同二次引爆距离3 种因素对瓦斯爆炸引燃瓦斯二次爆炸产生影响的规律问题.采用自主搭建的瓦斯爆炸引燃瓦斯二次爆炸实验系统进行实验分析.研究结果表明:当后段瓦斯体积分数固定时,前段瓦斯体积分数接近10%时,二次爆炸压力相较于其他工况最大高出 78.90%;当固定前段瓦斯体积分数时,随着后段瓦斯体积分数的增大,二次爆炸压力表现出先增大后减小的趋势.对0,0.1,0.2 m 3 种二次引爆距离下瓦斯二次爆炸压力分析发现,二次引爆距离在[0,0.2]m内的增大对瓦斯二次爆炸起到促进作用.研究结果为煤矿安全生产过程中研究人员和工程师制定相应的抑爆措施提供参考.
Abstract
In order to investigate the impact of three factors,including different upstream gas volume fraction,different down-stream gas volume fraction,and different secondary detonation distances,on the gas secondary explosion ignited by gas explo-sion,an independently constructed experimental system for gas secondary explosion ignited by gas explosion was employed for experimental analysis.The results show that when the downstream gas volume fraction is fixed,with the upstream gas volume fraction at about 10%,the secondary explosion pressure can be up to 78.90%higher compared to other conditions.When the upstream gas volume fraction is fixed,an increase in the downstream gas volume fraction results in the secondary explosion pressure presents the trend of increasing first and then decreasing.The analysis of gas secondary explosion pressure under three secondary detonation distances of 0,0.1 and 0.2 m reveals that an increase in the secondary detonation distance within the range of 0 to 0.2 m has a promoting effect on gas secondary explosion.The research results provide a reference for in the process of coal mine safety production researchers and engineers in formulating corresponding explosion suppression meas-ures.
关键词
封闭管道/瓦斯二次爆炸/爆炸压力/火焰传播特性Key words
closed pipeline/gas secondary explosion/explosion pressure/flame propagation characteristics引用本文复制引用
基金项目
国家自然科学基金项目(52074012)
安徽省自然科学基金项目(2308085J19)
安徽省高校杰出青年基金项目(2022AH020057)
安徽省高校学科(专业)拔尖人才学术支持项目(gxbjZD2022017)
安徽省学术和技术带头人后备人选学术研究活动资助项目(2022H301)
安徽理工大学研究生创新基金项目(2022CX2014)
出版年
2024
NETL
NSTL
维普
万方数据