多孔材料抑制氢气爆轰实验装置研究  

Experimental device for hydrogen detonation inhibition using porous materials

作　　者：高玉坤 赵焕娟[1] 冯芊 康会峰[2] 王秋香[2] GAO Yukun;ZHAO Huanjuan;FENG Qian;KANG Huifeng;WANG Qiuxiang(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;School of Aeronautics and Astronautics,North China Institute of Aerospace Engineering,Langfang 065000,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]北华航天工业学院航空宇航学院,河北廊坊065000

出　　处：《实验技术与管理》2024年第4期125-131,共7页Experimental Technology and Management

基　　金：北京科技大学实验室研究项目(FRF-DF-20-19)。

摘　　要：由于氢气具有点火能低、燃烧范围宽的特性,因此其爆轰产生的破坏力巨大,在氢气输送管道中安装多孔材料,可阻碍氢气爆轰产生的爆轰波的传播。该文搭建了预混气爆轰实验系统,在圆形光滑管道中改变初始压力、多孔材料的孔隙度及材料类型,研究多孔材料抑制氢气爆轰的性能。使用压力传感器、烟膜和数据采集系统采集爆轰波数据,分析爆轰波的传播速度、侧壁烟膜结果、胞格线与传播方向的夹角以及胞格结构等,得到了多孔材料对氢气爆轰抑制作用的规律,对减轻氢气爆炸事故造成的危害具有理论意义和工程应用价值,有助于推动氢能源的大规模利用。[Objective]Owing to its special properties,such as low ignition energy and wide combustion range,hydrogen easily causes explosion accidents in manufacturing,transportation,and use.The detonation wave has a large propagation distance,rapid pressure growth,and great destructive power.In recent years,the inhibition effect of porous materials on explosion has received considerable attention.Herein,the inhibition effect of porous materials on detonation wave propagation in a pipeline is investigated,effectively reducing the harmful consequences caused by hydrogen explosion accidents.[Methods]To investigate the quantitative suppression effect of the material and structure characteristics of porous materials on detonation,a premixed gas detonation experiment system was set up,comprising a detonation pipeline system,a filling and distributing system,an ignition system,and a data acquisition system.Before the experiment,a premixed gas of 2H2+O2+3Ar was configured using the filling and distribution system.During the experiment,the pipeline was first evacuated,and then the premixed gas was filled.The initial pressure of the gas was controlled through the control panel,and the premixed gas in the pipeline was ignited under high pressure using the ignition system to form detonation.The propagation velocity and peak pressure of the detonation wave were recorded using the data acquisition system,and the three-point trajectory of the detonation wave was recorded using a smoke film laid on the side wall of the pipeline.Al2O3 foam ceramics with different pore densities of 10,20,and 40 ppi were selected to conduct experimental research on the detonation mechanism of 2H2+O2+3Ar premixed gas with Al2O3 foam ceramic materials with different pore densities in the pipeline.The effects of the initial pressure,porosity of porous materials,and other parameters on the hydrogen detonation propagation mechanism were considered.The effect of pore density and material properties on the propagation velocity and cell structure of the detonation w

关 键 词：预混气爆轰 多孔材料 侧壁烟膜 胞格结构 

分 类 号：O38[理学—流体力学] V231[理学—力学]