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 ›› 2020, Vol. 39 ›› Issue (1): 70-.

• • 上一篇    下一篇

喷头安装角度对综合管廊细水雾灭火的影响

陈雅惠1，李太富1，杨猛2，朱纹静1   

  1. 1.西华大学土木建筑与环境学院，四川成都610039；2.威特龙消防安全集团股份公司，四川成都611731
  • 收稿日期:2019-08-28 出版日期:2020-01-15 发布日期:2020-09-21
  • 作者简介:陈雅惠（1995-），女，西华大学土木建筑与环境学院硕士研究生，主要从事消防性能化设计及应用研究，四川省成都市金牛区土桥金周路999 号，610039。
  • 基金资助:
    四川省科技计划项目（2017JZ0022）

Influence of sprinkler installation angle on water mist extinguishing fire in utility tunnel

CHEN Ya-hui1, LI Tai-fu1,YANG Meng2, ZHU Wen-jing1   

  1. 1.School of Civil Engineering,Architecture and Environment, Xihua University, Sichuan Chengdu 610039, China; 2.Weitelong Fire Safety Group Co.,Ltd., Sichuan Chengdu 611731,China
  • Received:2019-08-28 Online:2020-01-15 Published:2020-09-21

摘要： 为研究综合管廊火灾中喷头安装角度对细水雾灭火效果的影响，搭建实体火灾实验平台，利用FDS 模拟分析7 种喷头安装角度下细水雾对烟气温度和烟气层高度的影响。结果表明：侧喷无线槽工况火场温度下降得更快，降温效果更好；喷头安装角度≤50̊ 时，灭火时间少，灭火效果好，当喷头安装角度＞50̊时，灭火时间增加，灭火效果变差；喷头安装角度与平均温度降低值有一定的关系，但不呈线性关系，结合降温效果与烟气层高度，建议细水雾喷头安装角度为50̊ 。

关键词: 细水雾灭火系统；综合管廊, 火灾；喷头, 安装角度；烟气温度；数值模拟

Abstract: In order to study the effect of nozzle installation angle on the effect of water mist extinguishing fire in the utility tunnel, a physical fire test platform was built, and the effects of water mist on smoke temperature and smoke layer height under seven sprinkler installation angles were simulated by FDS. The results show that the temperature of the fire field in the side-jet wireless trough
is lower and the cooling effect is better; when the nozzle installation angle ≤50̊, the fire extinguishing time is less and the fire extinguishing effect is better. When the sprinkler installation angle >50̊, the fire extinguishing time increases, and the fire extinguishing effect becomes worse; The installation angle of the sprinkler has a certain relationship with the average temperature drop, but it does not show a linear relationship. Considering the cooling effect and the height of flue gas layer, it is suggested that the installation angle of water mist nozzle should be 50̊.

Key words: water mist, fire extinguishing system, utility tunnel;fire, sprinkler, installation angle, smoke temperature, numerical simulation