甲烷气氛条件下网状铝合金材料阻隔防爆性能研究

Study on the barrier explosion-proof performance of mesh aluminum alloy under methane atmosphere

基于网状铝合金材料的抑爆机理,自制水平激波管为主要研究设备,通过控制材料填充密度和甲烷气体浓度两个变量,开展实验探究激波管内网状铝合金材料在不同工况条件下的抑爆效果。结果表明:当甲烷浓度为最佳化学计量浓度,网状铝合金材料填充密度为27.39 kg/m^3时抑爆效果最佳;随着甲烷浓度增加,各填充密度下的燃爆压力均出现先增大后减小的趋势,即"倒U型"变化趋势。增加网状铝合金材料填充密度或提高压力管道的耐压能力,更有利于提高网状铝合金材料在甲烷气氛条件下的阻隔防爆性能和生产实践中的安全性。

Based on the anti-explosion mechanism of mesh aluminum alloy material,the horizontal shock tube was made to be the main research equipment.By controlling the packing density of the material and the concentration of methane gas,we wanted to know how they influence the internal explosion pressure under different circumstances.The results showed that the best explosion suppression effect when methane concentration is the best stoichiometric concentration and the mesh aluminum alloy material has a packing density of 27.39 kg/m^3;With the increase of methane concentration,the explosion pressure at each packing density first increases and then decreases,that is,the trend of“inverted U-shaped”;Increasing the packing density and the pressure resistance of the pressure pipe are more conducive to improving the barrier explosionproof performance of the mesh aluminum alloy under the methane atmosphere condition and the safety in the production practice.