点火方式对受限空间油气爆燃规律的影响

doi:10.11949/j.issn.0438-1157.20150958

化工学报 ›› 2016, Vol. 67 ›› Issue (4): 1626-1632.DOI: 10.11949/j.issn.0438-1157.20150958

• 其他 • 上一篇

点火方式对受限空间油气爆燃规律的影响

吴松林^1,2, 杜扬¹, 张培理¹, 梁建军¹

1. 后勤工程学院重庆火灾与爆炸重点实验室, 重庆 401311;
2. 后勤工程学院基础部, 重庆 401311

收稿日期:2015-06-19 修回日期:2015-10-12 出版日期:2016-04-05 发布日期:2016-04-05
通讯作者: 吴松林
基金资助:
国家自然科学基金项目(51276195);重庆市基础与前沿研究项目(cstc2013jcyjA00006)。

Effect of ignition node on gasoline-air deflagration behavior in confined space

WU Songlin^1,2, DU Yang¹, ZHANG Peili¹, LIANG Jianjun¹

1. Chongqing Key Laboratory of Fire and Explosion Safety, Logistical Engineering University, Chongqing 401311, China;
2. Department of Fundamental Studies, Logistical Engineering University, Chongqing 401311, China

Received:2015-06-19 Revised:2015-10-12 Online:2016-04-05 Published:2016-04-05
Supported by:
supported by the National Natural Science Foundation of China (51276195) and the Basic and Frontier Research Project of Chongqing (cstc2013jcyjA00006).

摘要/Abstract

摘要：

通过可视化和数据分析方法,针对电火花、突遇高温热壁、直接加热热源和持续加热热壁4种常见的点火方式,对油气在受限空间的整个爆燃过程进行了对比分析。不同点火方式下油气爆燃的起燃条件、起燃速度、火焰结构、火焰颜色存在很大的区别,并进行了细节分析。尽管油气在受限空间的爆燃过程都呈现出4个阶段,但火焰颜色、持续时间对不同的点火方式是不同的。通过对最大爆炸超压和超压典型曲线的分析,最大爆炸超压由大到小的点火方式依次是突遇高温热壁、电火花、直接加热热源和持续加热热壁,并分析了受限空间中超压曲线的典型特征。

关键词: 受限空间, 油气, 混合物, 爆炸, 点火方式, 实验验证

Abstract:

For four daily ignition modes, including electric spark, hot wall suddenly touched, hot resource direct heated and hot wall continuous heated, a comparative analysis of the whole process of gasoline-air deflagration in confined space was made through visualization experiment and data analysis. There were great differences in ignition condition, combustion speed, flame structure and flame color for gasoline-air deflagration under different ignition mode. Although there were four stages during the process of gasoline-air deflagration in confined space, their duration time and flame color were all different. According to analysis for maximum explosion overpressure and explosion pressure curves, the ignition modes of maximum explosion overpressure from big to small were hot wall suddenly touched, electric spark, hot resource direct heated and hot wall continuous heated. At the same time the typical features of overpressure curve was analyzed.

Key words: confined space, gasoline-air, mixture, explosions, ignition mode, experimental validation

中图分类号:

X932

吴松林, 杜扬, 张培理, 梁建军. 点火方式对受限空间油气爆燃规律的影响[J]. 化工学报, 2016, 67(4): 1626-1632.

WU Songlin, DU Yang, ZHANG Peili, LIANG Jianjun. Effect of ignition node on gasoline-air deflagration behavior in confined space[J]. CIESC Journal, 2016, 67(4): 1626-1632.

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点火方式对受限空间油气爆燃规律的影响

Effect of ignition node on gasoline-air deflagration behavior in confined space

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