主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (2): 225-228.

• • 上一篇    下一篇

细水雾系统参数对有障碍物液体火灾灭火效果的影响

邓琦1，马家辉2，陈铁鑫1   

  1. 1. 濮阳市消防救援支队，河南濮阳457000；2. 河南省消防救援总队，河南郑州450008
  • 出版日期:2021-02-15 发布日期:2021-02-15
  • 作者简介:邓琦（1988-），男，濮阳市消防救援支队经济技术开发区大队初级专业技术职务，专业技术十一级，主要从事防火监督工作，河南省濮阳市濮上路3 号，457000。

Influence of water mist system parameters on liquid fire extinguishing effect with obstacles

DENG Qi1, MA Jia-hui2, CHEN Tie-xin1   

  1. 1. Puyang Fire and Rescue Division, Henan Puyang 457000, China; 2. Henan Fire and Rescue Brigade, Henan Zhengzhou 450008, China
  • Online:2021-02-15 Published:2021-02-15

摘要： 利用FDS 数值模拟软件，采取控制变量法设置4 组数值模拟，分别研究细水雾系统水滴粒径、雾化角度、喷水强度、喷头高度对火源周围存在无法燃烧或尚未开始燃烧的障碍物情况下灭火效果的影响。研究发现，当火源设置为乙醇池火时，存在障碍物条件下，细水雾系统水滴粒径设置在250~400 μm，雾化角度设为120°，喷水强度设为2.0~2.5 L/（min·m2），喷头高度距障碍物1 m 时灭火效果较为理想。

关键词: 细水雾, FDS, 数值模拟, 灭火效果, 障碍物

Abstract:

FDS was used to set up four groups of numerical simulation by the control variable method to study the influence of water droplet size, atomization angle, spray intensity and nozzle height on the fire extinguishing effect of fire with obstacles that cannot burn or has not yet begun to burn. It is found that when the fire source is ethanol pool fire and there are obstacles, the fire extinguishing effect is better; when the water droplet size of the water mist system is set at 250~400 μm, the atomization angle is set at 120° , the spray intensity is set at 2.0~2.5 L/ (min·m2), and the sprinkler height is 1 m from the obstacle. 

Key words: water mist, FDS, numerical simulation, fire extinguishing effect, obstacle