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在实验的基础上对瓦斯爆炸传播过程中火焰温度和传播速度间的相互关系进行了研究,并分析了火焰温度诱导火焰加速的机理。研究结果表明:火焰温度和传播速度的变化趋势是一致的,但火焰温度对传播速度的影响较为明显,随着温度的升高,火焰传播速度不断增大。分析认为高温促进甲烷的分解产生更多的自由基,且自由基在高温条件下易于扩散,反应更为剧烈是火焰加速的诱因。
Based on the experiment, the relationship between flame temperature and propagation velocity during gas explosion propagation was studied, and the mechanism of flame temperature induced flame acceleration was analyzed. The results show that the variation trend of flame temperature and propagation velocity are consistent, but the influence of flame temperature on propagation velocity is more obvious. With the increase of temperature, flame propagation velocity increases. Analysis suggests that high temperature to promote the decomposition of methane to produce more free radicals, and the free radicals in the high temperature conditions easy to spread, the reaction is more intense is the incentive to accelerate the flame.