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 (11): 1631-1635.

• • 上一篇    下一篇

侧向喷射条件下细水雾扑灭水平表面流淌火研究

李红钢1，李 强2，熊 杰3，李金梅2   

  1. （1.中国人民警察大学 研究生院，河北 廊坊065000；2.中国人民警察大学 防火工程学院，河北 廊坊 065000；3.四川省建筑科学研究院有限公司 能源与环境研究所，四川 成都 610081）
  • 出版日期:2021-11-15 发布日期:2021-11-15
  • 通讯作者: 李 强，男，中国人民警察大学教授。
  • 作者简介:李红钢（1998-），男，河南安阳人，中国人民警察大学硕士研究生，主要从事细水雾灭火技术相关研究，河北省廊坊市安次区西昌路220号，065000。
  • 基金资助:
    基金项目：河北省高等学校科学技术研究项目（QN2020516）

Study on extinguishing horizontal surface flow fire by water mist under lateral sprayLI Hong-gang

LI Hong-gang1, LI Qiang2,XIONG Jie3, LI Jin-mei2   

  1. 1. Graduate School, China People's Police University, Hebei Langfang 065000, China；2. School of Fire Protection Engineering, China People's Police University, Hebei Langfang 065000, China；3. Energy and Environment Research Institute,Sichuan Institute of Building Research, Sichuan Chengdu 610081,China
  • Online:2021-11-15 Published:2021-11-15

摘要： 为探讨侧向喷射条件下细水雾扑灭流淌火的技术可行性，针对水平表面流淌火，在考虑火焰辐射、燃料与垫层之间的对流换热基础上，建立细水雾在开敞空间扑灭流淌火理论模型，实验研究细水雾喷头排数、倾斜角度对火焰形状、火焰温度、灭火机理和灭火时间的影响。结果表明：细水雾冲击燃料加快其流淌时可以增强灭火能力；采用单排喷头水平喷射时可有效抑制一侧火焰且对火焰拉伸作用最强；采用双排喷头水平喷射时，可有效抑制两侧火焰且灭火速度最快；当喷头向上倾斜15°时，细水雾冷却燃料能力减弱并使灭火时间变长。

关键词: 消防, 细水雾灭火系统, 流淌火, 喷头设置

Abstract: In order to explore the technical feasibility of extinguishing flowing fire by water mist under the condition of lateral injection, a theoretical model of extinguishing flowing fire by water mist in open space was established on the basis of considering the radiation transmission of the flame and the convective heat transfer between the fuel and the cushion. The effects of the number of water mist nozzles and the inclination angle on the flame shape, flame temperature, fire extinguishing mechanism and fire extinguishing time were studied experimentally. The results showed that the fire extinguishing ability can be enhanced when the water mist impinging fuel accelerates its flow. Horizontal spraying with single row nozzle can effectively suppress one side flame and has the strongest flame stretching effect. The two-row nozzle horizontal spraying can effectively suppress the flames on both sides and the fire extinguishing speed is the fastest. When the nozzle tilted upward by 15°, the ability of water mist to cool the fuel weakened and the extinguishing time prolonged.

Key words: fire protection, water mist fine extinguishing system , flowing fire , nozzle setting