非燃烧区瓦斯爆炸冲击波在单向分岔管道内传播规律的试验研究

发布时间：2018-03-04 11:29

本文选题：安全工程　切入点：瓦斯爆炸　出处：《安全与环境学报》2015年05期 　论文类型：期刊论文

【摘要】：在空间上瓦斯爆炸可以分为瓦斯燃烧区、非瓦斯燃烧区两个区域。在瓦斯燃烧区内冲击波和火焰是相互耦合的;当瓦斯燃烧完毕后燃烧波消失,只剩非瓦斯燃烧区冲击波,冲击波失去能量支持,最终恢复至正常大气参数。为了研究非燃烧区内瓦斯爆炸冲击波在分岔管道中的传播特性,搭建了截面为80 mm×80 mm的方形管道,分别由1 m、1.5 m、2.5 m、3 m、4 m等5种长度不等的管道组合而成。管道由3个部分组成,前端为直管道瓦斯填充区,中间管道为空气直管道和管道末端,末端设计了30°、45°、60°、90°四种单向分岔角度。通过瓦斯填充量和管道分岔角度两个变量,采用TST6300动态数据采集储存仪,对管道内瓦斯爆炸冲击波能量及冲击波在单向分岔情况下超压分流情况进行试验研究。结果表明,管道单向分岔条件下,非燃烧区瓦斯爆炸冲击波分流系数与冲击波初始超压及管道分岔角度有关,分流系数随冲击波初始超压及分岔角度的增加而增加。
[Abstract]:In the space of gas explosion gas combustion zone can be divided into two zones, non combustion gas. Gas combustion in shock wave and flame zone are coupled with each other; when the combustion wave disappeared gas combustion is completed, only the area of shock wave of gas combustion, the shock wave loses energy support, eventually returned to normal atmospheric parameters. In order to study the non combustion wave propagation characteristics in bifurcation duct in the area of gas explosion shock, to build a cross section of 80 mm * 80 mm square tube, respectively by 1 m, 1.5 m, 2.5 m, 3 m, 4 m and 5 kinds of unequal length pipe combination. The pipeline consists of 3 parts composition, front tube gas filling zone, intermediate pipe for air pipe and straight pipe ends, at the end of the design 30 degrees, 45 degrees, 60 degrees, 90 degrees and four kinds of bifurcation angle. Through one-way volume and gas pipeline bifurcation angle of the two variables to fill, using TST6300 dynamic data acquisition and storage apparatus for pipeline Experiments were carried out in gas explosion shock wave and shock wave energy in the case of unidirectional bifurcation overpressure distribution. The results show that under the condition of non pipeline one-way bifurcation, combustion wave shunt coefficient and the initial shock wave overpressure and bifurcation angle pipeline in gas explosion shock, shunt coefficient increases with the increase of initial pressure and shock wave bifurcation angle.

【作者单位】：河南理工大学安全科学与工程学院瓦斯地质与瓦斯治理国家重点实验室培育基地;
【基金】：国家自然科学基金项目(51174080) 河南理工大学博士基金项目(B2009-20)
【分类号】：TD712.7

【参考文献】