典型超细干粉与惰性气体的协同灭火效果研究*

doi:10.16265/j.cnki.issn 1003-3033.2021.11.021

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (11): 148-154.doi: 10.16265/j.cnki.issn 1003-3033.2021.11.021

典型超细干粉与惰性气体的协同灭火效果研究^*

梁天水教授, 林争雄, 毛思远, 钟委副教授, 赵军教授

郑州大学力学与安全工程学院,河南郑州 450001

收稿日期:2021-08-02 修回日期:2021-10-16 出版日期:2021-11-28 发布日期:2022-05-28
作者简介:梁天水 (1981—),男,河南周口人,博士,教授,主要从事清洁高效灭火技术方面的研究。E-mail:liangtsh@zzu.edu.cn。
基金资助:
国家自然科学基金资助(51874258);河南省高等学校青骨干教师培养计划项目(2018GGJS002)。

Study on synergistic fire extinguishing effect of typical superfine dry powder and inert gas

LIANG Tianshui, LIN Zhengxiong, MAO Siyuan, ZHONG Wei, ZHAO Jun

School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou Henan 450001, China

Received:2021-08-02 Revised:2021-10-16 Online:2021-11-28 Published:2022-05-28

摘要/Abstract

摘要： 粉体灭火技术中惰性气体常常作为驱动气体,为改进粉体灭火技术,探究惰性气体与粉体之间的协同灭火作用,应用改进的杯式燃烧器,测试超细KHCO₃、超细KH₂PO₄、超细磷酸铵盐ABC等典型干粉熄灭甲烷火的灭火能力;选用超细KHCO₃干粉和超细磷酸铵盐ABC干粉作为研究对象,并选择CO₂、N₂、He、Ar惰性气体灭火剂,分析气固协同灭火效果。结果表明:灭火能力顺序为超细KHCO₃>超细磷酸铵盐ABC干粉>超细KH₂PO₄;超细ABC干粉与4种惰性气体之间具有较好的气固协同灭火效果,协同因子峰值分别为0.47、0.53、0.54和0.51,对应的气体体积分数约为5.5%、5.9%、8.7%和14.4%;而KHCO₃干粉与4种惰性气体的协同灭火效果不明显。

关键词: 超细干粉, 惰性气体, 协同灭火, 复合灭火剂, ABC干粉

Abstract: As inert gas is often used as driving gas in powder fire extinguishing technology, in order to improve the technology and explore the synergistic fire extinguishing effect of inert gas and powder, fire extinguishing ability of ultra-fine KHCO₃ dry powder, ultra-fine KH₂PO₄ dry powder and ultra-fine ammonium phosphate ABC dry powder was studied by using improved cup burner. Then, with ultra-fine KHCO₃ dry powder and ultra-fine ammonium phosphate ABC dry powder as research objects, CO₂, N₂, He and Ar as inert gas extinguishing agents, their gas-solid synergistic fire extinguishing effects were studied. The results show that in terms of fire extinguishing ability, they rank as ultra-fine KHCO₃ > ultra-fine ammonium phosphate ABC dry powder > ultra-fine KH₂PO₄. The middle one shows good gas-solid synergistic fire extinguishing effect with all four kinds of inert gas, with their peak values are 0.47, 0.53, 0.54 and 0.51 respectively, and corresponding gas volume percentage at about 5.5%, 5.9%, 8.7% and 14.4%. However, that of KHCO₃ dry powder with the four of them is not obvious.

Key words: superfine dry powder, inert gas, synergistic fire extinguishing effect, compound fire extinguishing agent, ABC powder

中图分类号:

X932

梁天水, 林争雄, 毛思远, 钟委, 赵军. 典型超细干粉与惰性气体的协同灭火效果研究^*[J]. 中国安全科学学报, 2021, 31(11): 148-154.

LIANG Tianshui, LIN Zhengxiong, MAO Siyuan, ZHONG Wei, ZHAO Jun. Study on synergistic fire extinguishing effect of typical superfine dry powder and inert gas[J]. China Safety Science Journal, 2021, 31(11): 148-154.

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典型超细干粉与惰性气体的协同灭火效果研究^*

Study on synergistic fire extinguishing effect of typical superfine dry powder and inert gas

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