Study of Atomizing Characteristics of Two-Phase Flow Emulsification Water Mist Nozzles
-
摘要: 为了研究消防领域细水雾灭火系统的关键部件——细水雾喷嘴的雾化结构形式,以空气和水为介质,利用马尔文激光粒度分析仪对两相流乳化型细水雾喷嘴的雾化特性进行了详细的研究.分析了该型喷嘴的工作特点,研究了不同供水压力、供气压力及气液比对喷嘴雾化特性的影响,为细水雾灭火系统及其喷嘴的设计方法和检验标准提供了依据.试验结果表明:该结构喷嘴的雾化性能完全满足细水雾灭火系统的性能要求.Abstract: For the objective of studying the structure of an atomizing nozzle which is the key component of a water mist fire-fighting equipment, this paper presents a detailed experimental investigation of the atomizing characteristics of a two-phase flow emulsification nozzle by the use of a Malvern particle size analyzer. In the experiment, the media is the mixture of water and air. The operating characteristics of the emulsification nozzle and the influences of the water pressure and air pressure on the atomizing characteristics of the nozzle have been analyzed. The experimental results show that the atomizing characteristics of this nozzle satisfy the requirements of the water mist fire-fighting system very well.
-
Key words:
- extinguishing and protection /
- two-phase mixtures /
- emulsification /
- nozzles /
- atomizing
-
[1] 刘江虹,廖光煊,秦 俊,等 细水雾与射流卷吸现象的模拟试验研究[J]火灾科学, 2000,9(2):8~13. [2]姚 斌,廖光煊,范维澄. 受限空间细水雾与火相互作用的实验研究[J].火灾科学 1997,6(2):48~52. [3]董希琳,邢浩颖,杨玉胜. 细水雾与火焰相互作用[J].火灾科学,1999,8(4):8~17. [4]庄逢辰. 液体火箭发动机喷雾燃烧的理论、模型及应用[M].长沙:国防科技大学出版社,1995. [5]杨 V,安德松W E. 液体火箭发动机燃烧不稳定性[M]. 张宝炯等译. 北京:科学出版社,2001. -
点击查看大图
计量
- 文章访问数: 3122
- HTML全文浏览量: 268
- PDF下载量: 1257
- 被引次数: 0
下载:
