摘要
采用预装真空腔对管道内瓦斯爆炸后火焰传播进行遏制是一种新型泄爆抑爆技术,从科学实验、理论分析和数值模拟3个方面初步研究了真空腔对爆炸火焰的窒息作用,结果显示一定体积真空腔的介入使其后的实验管道中不再出现火焰传播,真空腔的存在使燃烧过程的氧化工况由剧烈向缓慢转变,阻止燃烧三角形形成闭环,自由基生长的速度小于自由基的消失速度,爆炸火焰在真空腔内被窒息,证明了真空腔泄爆抑爆技术对爆炸火焰具有明显窒息作用的结论。
A new approach to explosion venting and restraining involves the pre-installation of a Vacuum Cavity in the pipe to prevent the gas explosion flame propagation in it. This paper preliminary studies the suffocation effect of the vacuum cavity on explosion flame by scientific experiment, theoretical analysis and numerical simulation. The main results are as following： the flame propagation stops in the pipe after the vacuum cavity with particular volume works; As the oxidation condition turns from severe to slow because of the existence of the vacuum cavity, the closed circle of the combustion can＇t form; as the growth rate of the free radical becomes less than the vanishing rate, the explosion flame is suffocated. Therefore it can be concluded that the vacuum cavity explosion venting and restraining technology has obvious effect on suffocating the explosion/lame.
出处
《能源与节能》
2014年第3期44-46,共3页
Energy and Energy Conservation
关键词
真空腔
泄爆抑爆
火焰窒息
数值模拟
vacuum cavity
explosion venting and restraining
flame suffocation
numerical simulation
