工业容器气体泄爆实验研究

为了给降低受限空间爆炸事故的发生率提供依据，揭示约束条件下甲烷-空气预混气体爆炸动力学过程，研究气体爆炸时压力与速度相互作用的规律，利用小尺寸爆炸实验平台，采用唯象法捕捉气体爆炸过程中的动态影像，宏观上揭示火焰传播的变化特征，并利用高速摄影、纹影系统直观地记录火焰传播的瞬态过程以及层流向湍流转变的过程。通过实验研究了不同泄压口比率和不同泄压膜强度时的泄爆规律。实验数据表明，受限环境中爆炸压力不仅决定火焰的传播速度，还影响火焰的结构变化。

Experimental study on vented gas explosion in industrial container

In order to provide theoretical knowledge about reducing the explosion probability within confined space，this study investigated the process of premixed methane-air explosion and the interaction law between gas pressure and speed in a confined space.The experiment was conducted under a small explosion experiment platform to capture the gas explosion dynamic images by phenomenological method，revealing the changes in flame propagation characteristics macroscopically.In addition，with the high-speed photography and schlieren camera system，the transient flame propagation process，and the flame transition from layer flow to turbulence were recorded intuitively.The ratio of different pressure relief openings and the venting law of different vent lamination strength were also studied.The experimental result shows that the explosion pressure within constrained environment not only determines the flame propagation velocity but also affects the flame structure.