球形容器泄爆收容的实验分析

Experimental analysis of explosion in spherical vessel vented into dump vessel

为研究气体爆炸泄爆收容过程中爆炸容器和收容容器内的压力变化规律及其影响因素,对球形容器在不同收容容器和爆炸容器体积比以及不同导管长度条件下的泄爆收容过程经行了实验研究。结果表明:收容容器体积越大,爆炸容器的压力峰值越小,爆炸压力下降的速度越快;收容容器的体积达到或超过爆炸容器体积的5倍时,接近敞开泄爆的压力峰值;泄爆导管的长度越长,爆炸容器的压力峰值越小;收容泄爆时,火焰的传播速率随着导管传播距离增加而降低,泄爆口处火焰传播速率最高。

To study the evolution of the pressures and the influencing factors in the process of ＂dump vessel vented＂, gas explosion experiment in spherical vessel vented into a dump vessel for different volume ratio of the dump vessel and the explosion vessel and different length of pipelines was carried out. It is shown that the maximum pressure of the explosion vessel reduces and the rate of the pressure drop increases with the increase of the dump vessel＇s volume; that the radio of the dump vessel volume to the explosion vessel is more than or equal to 5, that the maximum pressure in the explosion vessel approximately equals to the maximam pressure of the simple vented;that the maximum pressure of the explosion vessel reduces with the in- crease of the connecting ducfs length; and that the rate of the flame propagation reduces with the increase of the transmission distance and the highest rate of the flame propagation appears at the beginning of the vent opening.