多孔聚丙烯复合材料的抑爆性能研究

Study on explosion suppression performance of porous polypropylene

为分析填充多孔材料对管道中瓦斯爆炸压力的抑制效果,采用自主搭建的气体爆炸测试平台,试验研究多孔聚丙烯复合材料的内径、填充位置和填充长度等参数影响瓦斯爆炸压力的机制。结果表明:与空管道爆炸状态比较,填充多孔材料后最大爆炸压力、最大爆炸压力上升速率都明显降低;当填充多孔材料为实心,即内径为0 mm,填充在距离点火源最近处、填充长度为2 m时,管道末端最大爆炸压力值衰减69.64%,最大爆炸压力上升速率降低58.31%,对瓦斯爆炸压力的抑爆效果最佳;改变材料内径、填充位置和填充长度等因素均会对多孔材料的抑爆性能产生显著影响。

In order to analyze suppression effect of porous materials on gas explosion pressure in pipelines,a self-built gas explosion test platform was used to investigate influencing mechanism of inner diameter,filling position,and filling length of porous polypropylene composite material on explosion pressure. The results show that compared with explosion of empty pipelines,maximum explosion pressure and maximum pressure rise rate are significantly decreased by filling such porous materials. When the material’s inner diameter is 0 mm,namely it is solid,and it is put closest to fire source with a filling length of 2 m,it will show the optimal suppression effect,with the maximum explosion pressure value at the pipeline end being attenuated by 69. 64%,and maximum rise rate reduced by 58. 31%. Changes in inner diameter,filling position and filling length and other factors will all have a significant impact on explosion suppression performance of these materials.