基于火焰面积法的产气药剂燃烧稳定性研究

消防科学与技术 ›› 2022, Vol. 41 ›› Issue (3): 413-416.

基于火焰面积法的产气药剂燃烧稳定性研究

张承琛，朱晨光，严晨光，端木凡顺

（南京理工大学化学与化工学院，江苏南京 210094）

出版日期:2022-03-15 发布日期:2022-03-15
作者简介:张承琛（1996-），男，南京理工大学化学与化工学院硕士研究生，主要从事产气剂与气溶胶灭火剂的研究，江苏省南京市玄武区孝陵卫200号，210094。
基金资助:
国家自然科学基金资助项目（51676100，51076066）

Study on the combustion stability of gas generant based on flame area analysis

ZHANG Cheng-chen， ZHU Chen-guang， YAN Chen-guang， DUANMU Fan-shun

( School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing 210094, China)

Online:2022-03-15 Published:2022-03-15

摘要/Abstract

摘要： 间歇性爆喷是非储压式干粉灭火装置使用时的常见问题，与产气剂配方、混合均匀程度和结构有关，而燃烧稳定性是影响产气剂燃烧效果的直接表现。基于一种产气剂配方，分别采用机械混合与冷冻干燥两种制备方法，利用高速摄影仪，对产气剂燃烧稳定性进行了研究。用扫描电子显微镜表征形貌，显示出冷冻干燥法在混合均匀度上明显优于机械混合。通过MATLAB量化燃烧火焰面积，结果表明：当对稳定燃烧时段与总燃烧时间的比值进行比较时，机械混合药剂平均值仅有13%，冷冻干燥药剂达到35.19%；当对稳定燃烧阶段的平均火焰面积变化标准差进行比较时，机械混合药剂为9.263，冷冻干燥药剂为5.924。

关键词: 产气剂；燃烧稳定性；火焰面积；混药

Abstract: Intermittent explosion spray is a common problem when using dry powder fire extinguishing device. This problem is related to the formulation, uniformity and structure of the gas generating agent while the combustion stability is a direct manifestation of the combustion effect of the gas generating agent. In this paper, a kind of gas generating agent was prepared by mechanical mixing and freeze-drying, and the combustion stability of the gas generating agent is analyzed by high-speed camera. The scanning electron microscopy (SEM) was used to characterize the morphology of gas generating agent. The SEM images showed that the freeze-drying method was significantly better than mechanical mixing in the uniformity of samples. The combustion flame area is quantified by Matlab, and the results indicate that when comparing the ratio of the stable combustion time to the total combustion time, the average value of the mechanical mixing agent is only 13% while the freeze-drying agent reaches to 35.19%; when comparing the standard deviation of average flame area in the stable combustion stage, the mechanical mixing agent is 9.263 while the freeze-drying agent is 5.924.

Key words: gas generant; combustion stability; flame area;mixed medicine

张承琛，朱晨光，严晨光，端木凡顺. 基于火焰面积法的产气药剂燃烧稳定性研究[J]. 消防科学与技术, 2022, 41(3): 413-416.

ZHANG Cheng-chen， ZHU Chen-guang， YAN Chen-guang， DUANMU Fan-shun. Study on the combustion stability of gas generant based on flame area analysis[J]. Fire Science and Technology, 2022, 41(3): 413-416.