摘要
研究C_(2)H_(2)+2.5O_(2)+85%Ar预混气发散圆柱形爆轰胞格结构及其临界条件,搭建内径3.2 mm,长500 mm的驱动段钢管和直径32 mm钢化玻璃试验台进行燃爆试验,利用高速摄影技术获得爆轰胞格结构,传感器记录压力数据。选取初始压力分别为55,45,40,30 kPa,得到4种不同的胞格结构。结果显示,初始压力高于临界压力时,柱爆轰产生的胞格随着初始压力增大而减小,且结构清晰,大小规则,胞格结构大体上呈现出内小外大的形式;接近临界压力时,爆轰胞格不明显。
In order to study the structure and critical conditions of C_(2)H_(2)+2.5O_(2)+85%Ar premixed divergent cylindrical detonation cell,a drive section steel pipe with an inner diameter of 3.2 mm and a length of 500 mm and toughened glass with a diameter of 32 mm were designed to build an experimental platform to conduct the combustion and explosion experiment.The detonation cell structure was obtained by high-speed photography,and the pressure data were recorded by sensors.The initial pressures were 55 kPa,45 kPa,40 kPa and 30 kPa,respectively,and four different cell structures were obtained.When the initial pressure was higher than the critical pressure,the cell lattice generated by column detonation decreased with the increase of the initial pressure.And the structure was clear and the size was regular.The cell lattice structure generally presents the form of small inside and large outside.When approaching the critical pressure,the detonation cell was not obvious.
作者
赵焕娟
药慧妹
林敏
萧星宇
王家俊
Zhao Huanjuan;Yao Huimei;Lin Min;Xiao Xingyu;Wang Jiajun(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing,100083;Key Laboratory of Gas Geology and Gas Control-Cultivation Base of State Key Laboratory Jointly Built by the Province and the Ministry,Henan,Jiaozuo,454003;School of Reliability and Systems Engineering,Beihang University,Beijing,100191;School of Mechanical Engineering,McGill University,Montreal,QC H3A 0G4,Canada)
出处
《安全、健康和环境》
2022年第3期22-27,共6页
Safety Health & Environment
基金
国家重点研发计划重点专项(2018YFC0810606-02),救援现场信息动态监测与预处理技术研究
中央高校基本科研业务费(FRF-MP-20-20),大安全框架下的城市防灾社区建设应用技术研究(防灾减灾信息化技术在城市社区中的应用研究)
中央高校基本科研业务费(FRF-TP-19-020A3),预混气在管中管的爆轰内部微结构研究与形成机理探索
河南省瓦斯地质与瓦斯治理重点试验室——省部共建国家重点试验室培育基地等科研平台开放课题(WS2020A03),基于纳米示踪粒子的甲烷预混气爆轰过程三维重构及抑爆机理研究。
关键词
圆柱形爆轰
乙炔预混气
胞格结构
初始压力
临界条件
cylindrical detonation
premixed C_(2)H_(2)+2.5O_(2)+85%Ar gases
cellular structure
initial pressure
critical condition
