金属丝状材料对预混气体爆炸影响规律研究

Study of the Effect of Metal Filamentary Materials on Premixed Gas Explosion

在自主设计加工的气体爆炸瞬态压力实验装置中,填充Cu、Al、Ni、Fe金属丝状材料后分别进行甲烷-空气(体积比为12%)和丙烷-空气(体积比为8%)预混气体的密闭爆炸实验,测定爆炸瞬态压力变化情况并进行对比分析。研究结果表明:填充金属丝状材料后爆炸压力峰值明显减小,说明能够有效地抑制可燃气体的爆炸;不同金属丝状材料的抑爆效果有明显的差异,其中Ni、Fe金属丝状材料抑爆性能明显优于Cu、Al金属丝状材料;随着可燃气体的分子质量的增加,Ni、Fe金属丝状材料抑爆性能优于Al、Cu金属丝状材料抑爆性能的现象更加明显。

The closed explosion experiments were carried out with an independently designed gas explosion transient pressure test device, filled with Cu, Al, Ni, and Fe metal filamentary materials, and performed respectively under different premixed gases conditions including methane-air(12%) and propane-air(8%,V/V). The changes of the transient pressure in the explosion were tested and the comparative analysis was conducted accordingly. The experimental results show that the explosion pressure peak was significantly reduced after being filled with metal filamentary materials, Which proves that the metal filamentary materials can effectively suppress the explosion of combustible gas. It also can be also seen that Ni, Fe metal filamentary materials have better suppression performance than the Al, Cu metal filamentary materials in the explosion;It is evident that the explosion-suppress performance of Ni, Fe metal filamentary materials is better than that of Al, Cu metal filamentary materials with the increase of the molecular mass of combustible gas.