摘要
为了进一步探究瓦斯爆炸冲击波火焰波的传播特性,在自行设计并搭建的复杂管网中进行瓦斯爆炸实验。实验中利用高精度压力传感器和温度传感器收集压力变化和温度峰值数据;使用火焰传感器采集爆炸过程中出现的火焰波信号,根据理论公式计算得出火焰波传播速度;利用Origin软件对实验数据进行综合处理,研究复杂管网中瓦斯爆炸时的冲击波、火焰波传播特性。结果表明:管道内各测点最大压力峰值为0.599 MPa,最小压力峰值为0.297 MPa,管道内火焰波速度峰值为214.04 m/s,在管道L_(4)上速度值降低为0 m/s,各测点温度峰值最大值为1837 K,最小值为1521 K。随着爆炸冲击波与火焰波在复杂管网内的传播距离不断增大,压力衰减趋势和速度突变趋势更为显著。
For the purpose of further exploring the flame wave propagation characteristics of the gas explosion shock wave,the gas explosion experiment was carried out in a complex pipe network designed and built by ourselves.In the experiment,a high precision pressure sensor and a temperature sensor were used to collect pressure changes and temperature peak data.By using the flame sensor to collect the flame wave signal in the process of explosion,the flame wave propagation velocity was calculated according to the theoretical formula,and the Origin software was used to comprehensively process the experimental data to study the shock wave and flame wave propagation characteristics of gas explosion in the complex pipe network.The results show that in the pipeline the peak value of maximum pressure and minimum pressure at each measuring point is 0.599 MPa and 0.297 MPa,the peak value of flame wave velocity is 214.04m/s,and the value of velocity on the pipeline L_(4) decreases to 0 m/s.The peak value of temperature at each measuring point is 1,837 K and the minimum is 1521 K.As the propagation distance of the blast wave and flame wave increases in the complex pipe network,the trend of pressure attenuation and velocity mutation becomes more significant.
作者
贾进章
王东明
牛鑫
李斌
朱金超
王枫潇
JIA Jinzhang;WANG Dongming;NIU Xin;LI Bin;ZHU Jinchao;WANG Fengxiao(College of Safety Science and Engineering,Liaoning Technical University,Fuxin 123000,China;Key Laboratory of Mine Power Disaster and Prevention of Ministry of Education,Liaoning Technical University,Huludao 125105,China)
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2022年第4期84-91,共8页
Coal Geology & Exploration
基金
国家自然科学基金面上项目(52174183)。
关键词
瓦斯爆炸
冲击波
火焰波
传播特性
复杂管网
gas explosion
shock wave
flame wave
propagation characteristic
complex pipe network
