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 ›› 2024, Vol. 43 ›› Issue (6): 850-854.

• • 上一篇    下一篇

全氟己酮和氮气混合协同灭火效能试验研究

马建琴1,2,3, 羡学磊1,2,3, 赵青松1,2,3, 王皓轩1,2,3   

  1. （1. 应急管理部天津消防研究所，天津300381；2. 工业与公共建筑火灾防控技术应急管理部重点实验室，天津 300381；3. 天津市消防安全技术重点实验室，天津 300381）
  • 出版日期:2024-06-15 发布日期:2024-06-15
  • 作者简介:马建琴（1983— ），女，甘肃张掖人，应急管理部天津消防研究所副研究员，主要从事固定灭火系统技术开发与研究，天津市南开区卫津南路110号，300381，majianqin@tfri.com.cn。
  • 基金资助:
    国家重点研发计划项目（2023YFC3010200）；天津市科技计划项目（22JCZDJC00900）；应急管理部天津消防研究所基科费项目（2021SJ03）

Study on the synergistic fire extinguishing efficiency of C6F12O/N2 mixed N2

Ma Jianqin1,2,3, Xian Xuelei1,2,3, Zhao Qingsong1,2,3, Wang Haoxuan1,2,3   

  1. (1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 2. Laboratory of Fire Protection Technology for Industry and Public Building, Ministry of Emergency Management, Tianjin 300381, China; 3. Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China)
  • Online:2024-06-15 Published:2024-06-15

摘要： 为研究全氟己酮和氮气的气液两相流混合协同作用的灭火效能，研发了混合气体灭火浓度测试装置和基于缩尺灭火模型的两相流灭火浓度测试装置，测定了全氟己酮气体和氮气混合灭火浓度及全氟己酮经氮气雾化后的两相流灭火浓度，并通过全淹没灭火试验测试了对正庚烷火的灭火效果。结果表明，全氟己酮气体和液体雾化后的灭火浓度都与氧浓度呈线性正相关；缩尺灭火模型可准确测定液体灭火剂雾化后的灭火浓度，偏差不超过1.36%；基于氮气和全氟己酮混合后的两相流喷放方案，通过在灭火过程中同时降低保护空间氧浓度的方式，降低了全氟己酮的灭火浓度，同时还实现了大孔径喷头下的全氟己酮灭火剂低压大流量雾化和快速喷放；在100 m3全淹没灭火条件下，降低灭火剂浓度及灭火剂用量达27%。

关键词: 全氟己酮, 氮气, 协同灭火, 灭火浓度, 全淹没试验

Abstract: In order to study the fire extinguishing efficiency of mixed gas-liquid flow of C6F12O/N2, developed a fire extinguishing concentration test device of mixed gas and a two-phase flow fire extinguishing concentration test device based on a scaled fire extinguishing model. Then measured the fire extinguishing concentration of C6F12O/N2 and the two-phase flow fire extinguishing concentration of C6F12O after nitrogen atomization，and verified by full-scale fire extinguishing experiment. The results show that the fire extinguishing concentration of C6F12O gas and liquid after atomization is linearly positively correlated with the oxygen concentration. The scale fire extinguishing model can accurately measure the extinguishing concentration of liquid fire extinguishing agent after atomization, and the deviation is less than 1.36%. Based on the two-phase flow spray scheme mixed with C6F12O/N2, the fire extinguishing concentration of C6F12O was reduced by reducing the oxygen concentration in the protective space during the fire extinguishing process. At the same time, under the large?aperture nozzle, realized the low pressure, large flow atomization and rapid spray of C6F12O. Finally, through the physical fire experiment, the concentration and amount of C6F12O can be reduced by 27% under the fire extinguishing condition of 100 m3 total flooding.

Key words: perfluorohexane, nitrogen, synergistic fire extinguishing, fire extinguishing concentration, total flooding test