2种气体状态下瓦斯爆炸极限范围的研究

为研究2种气体状态下的瓦斯爆炸极限附近的瓦斯爆炸压力规律，运用20 L爆炸特性测试系统，对不同瓦斯浓度下瓦斯爆炸压力变化进行记录，绘图，从而直观性分析瓦斯爆炸压力规律及确定瓦斯爆炸极限范围。研究得出了2种气体状态下瓦斯爆炸上下限的瓦斯浓度范围，确定了瓦斯爆炸极限。同时，还得出在浓度相差不大的瓦斯爆炸压力的大体趋势为，在静止状态下点火后瓦斯爆炸压力随时间增长缓慢增长，而湍流状态下点火后瓦斯爆炸压力增长较为迅速。

Study on the Limit Range of Gas Explosion in Two Kinds of Gas Conditions

In order to study the law of gas explosion pressure near the gas explosion limit in two gas states,the 20 L explosion characteristic test system is used to record and map the gas explosion pressure changes under different gas concentrations,so as to intuitively analyze the gas explosion pressure law and determine the gas.Explosion limit range.The study obtained the gas concentration range of the upper and lower limits of gas explosion under two gas states,and determined the gas explosion limit.At the same time,it is also found that the general trend of gas explosion pressure with little difference in concentration is that the gas explosion pressure increases slowly with time after ignition in the static state,and the gas explosion pressure increases rapidly after ignition in the turbulent state.