弯管对瓦斯爆炸的影响研究

Influencing Study of Curved Pipe on Gas Explosion

摘要: 为了预防和降低瓦斯爆炸事故造成的危害，利用自制的水平管道式可燃气体-粉尘爆炸装置模拟矿井巷道，通过改变弯管的角度及位置，研究瓦斯爆炸压力和火焰传播速度的变化规律。结果表明：弯管对瓦斯爆炸具有显著影响，使得最大爆炸压力增大，火焰传播速度加速。弯管角度对瓦斯爆炸影响不同，45°弯管影响最小，90°弯管影响最大。
- 弯管角度 /
- 瓦斯爆炸 /
- 爆炸压力 /
- 火焰速度
Abstract: In order to prevent and reduce the serious damages caused by mine gas explosions, the homemade combustible gas-dust explosion device of horizontal pipeline were used to simulate the mine tunnel. By changing the angle and location of curved pipe，the paper studied the variation law of the gas explosion pressure and flame spreading velocity. The results showed that curved pipe highly increased the gas flame transmission velocity, the max explosion pressure and had great influence on gas explosion. Curved pipes of different angle had different influence on gas explosion，among that curved pipe of 45-degree angle had least influence and curved pipe of 90-degree angle had maximum influence.
- bending angle of curved pipe /
- gas explosion /
- explosion pressure /
- flame velocity

[1]	张景林.气体、粉尘爆炸灾害及其安全技术[J].中国安全科学学报,2002,12(5):9-14.
[2]	贾智伟,刘彦伟,景国勋.瓦斯爆炸冲击波在管道拐弯情况下传播特性[J].煤炭学报,2011,36(1):97-100.
[3]	何学超,孙金华,丁乙斌，等.90°弯管对丙烷-空气预混火焰传播的影响[J].燃烧科学与技术,2010,16(3):241-245.
[4]	侯万兵,谭迎新,张英浩. 模拟煤矿巷道内瓦斯爆炸特性的试验研究[J].煤炭科学技术,2009,37(5):58-61.
[5]	胡宗民,牟乾辉,张德良,等.爆轰波在弯管内传播过程数值分析[J].计算物理,2004,21(5):408-414.
[6]	杨志.气体火焰在弯曲管道中传播特性研究[D].合肥：中国科学技术大学,2006.
[7]	秦涧,谭迎新,王志青，等.管道内障碍物形状对瓦斯爆炸影响的试验研究[J].煤炭科学技术,2012,40(2):60-62.
[8]	丁珏,翁培奋.90°弯管内流动的理论模型及流动特性的数值研究[J].计算力学学报,2004,21(3):314-321.
[9]	Edwards D H, Thomas G O. The diffraction of Detonation Waves in Channels With 90° Bends[J].Combustionis.1983，3(1):65-76.
[10]	Robert Blanchard, Detlef Arndt，Rainer Gratz，et al.Explosions in Closed Pipes Containing Baffles and 90 Degree Bends[J].Journey of Loss Prevention in the Process Industries.2010,23：253-259.
[11]	Cha M S, Kim H G, Chung S H. Boundary-velocity Gradient and Premixed Flame Blowoff in U-Bend Tubes With Secondary Flow[J].Combustion and Flame, 2003,132(4):601-609.