丝网结构对容器管道开口系统气体爆炸的影响

Effect of wire mesh on gas explosion in spherical vessel connected to pipe opening to atmosphere

为研究丝网结构对容器管道开口系统气体爆炸的影响,通过改变丝网结构的层数和目数,对连接有一段管道的球形容器进行实验。研究发现,当系统处于开口状态时,在管道处加入具有抑爆效果的丝网后,容器内最大泄爆压力增大,且最大泄爆压力随着丝网层数以及丝网目数的增加而增大。建立数学模型对容器内部最大泄爆压力进行拟合,通过拟合公式发现,丝网层数对容器管道开口系统气体爆炸时的最大泄爆压力有一定的影响,并且开始时最大泄爆压力随着丝网层数的增加而增加,随后丝网结构对最大泄爆压力的影响逐渐减小,最大泄爆压力趋于稳定。

To study the effect of a multi-layer wire mesh on gas explosion in spherical vessel connected to a pipe opening to atmosphere,experiments were conducted under different layers and meshes.The results show that the explosion intensity is enhanced in an open system while a wire mesh is added in pipe,and that the maximum explosion pressure increases with the increasing numbers of layer and mesh.A mathematical model was built by the method of curve fitting.The maximum explosion pressure was fitted according to the model.Fitting formula shows that a wire mesh with less layers has a positive effect on the maximum explosion pressure.However,the effect is weakened with the increase of the number of layers.When the number of layers is large enough,the maximum explosion pressure tends to be constant.