摘要
细水雾作为抑爆介质具有高效、环保等优点,受到越来越多的重视。以透明管道为基础搭建了细水雾抑制瓦斯爆炸的实验平台,通过改变喷嘴个数、喷雾压力研究了不同细水雾流量、粒度对瓦斯爆炸上限的影响。根据实验物理模型,进行了细水雾与瓦斯燃烧爆炸相互作用过程的数值模拟。结果表明:随着细水雾粒度变小,瓦斯爆炸上限降低,水雾粒度与爆炸上限呈一阶增加指数关系;细水雾粒度相对水雾流量在抑制瓦斯爆炸过程中起主导作用,190μm左右的细水雾粒度具有更好的抑爆效果。研究得出的规律性结论可以为细水雾抑爆技术及装备的研究提供理论基础。
Explosion suppression medium water mist has the advantages of high efficiency and environ- mental protection ,receiving more and more attention. In this paper, we build the experimental platform on water mist suppressing gas explosion, based on the transparent pipeline. We studied the impact of gas upper explosion limit under different water mist flow and particle size, by changing the number of nozzles and spray pressure. According to experimental physics model, we did numerical simulation on the inter- action process of water mist and gas explosion. Study found that with the decrease of water mist particle size, gas upper explosion limit reduce, water mist particle size and the gas upper explosion limit have first-order increasing exponential relationship. Relative to water mist flow, water mist particle size plays a dominant role in the process of suppressing gas explosion. Water mist particle size of about 190 μm has better explosion suppression effect. The regularity conclusions of the study can provide a theoretical basis for the study of mist explosion suppression technology and equipment.
出处
《西安科技大学学报》
CAS
北大核心
2015年第5期644-649,共6页
Journal of Xi’an University of Science and Technology
关键词
细水雾粒度
喷雾压力
爆炸上限
抑爆效果
数值模拟
water mist particle size
spray pressure
upper explosion limit
explosion suppression effect
numerical simulation
