半受限空间油气无约束泄爆外场特性研究

doi:10.16265/j.cnki.issn1003-3033.2017.08.009

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (8): 50-55.doi: 10.16265/j.cnki.issn1003-3033.2017.08.009

半受限空间油气无约束泄爆外场特性研究

李阳超, 杜扬教授, 王世茂, 齐圣, 李国庆

中国人民解放军后勤工程学院军事供油工程系,重庆 401331

收稿日期:2017-04-20 修回日期:2016-06-20 出版日期:2017-08-20 发布日期:2020-10-13
作者简介:李阳超(1991—),男,新疆乌鲁木齐人,硕士研究生,研究方向为油气安全防护技术。E-mail:liyangchao91@163.com。
基金资助:
国家自然科学基金资助(51276195)。资助项目:重庆市研究生科研创新项目(CYS15235)。

Study on external characteristics of gasoline-air mixture's free venting explosion in semi-confined space

LI Yangchao, DU Yang, WANG Shimao, QI Sheng, LI Guoqing

Department of Petroleum Supply Engineering, Logistic University of PLA, Chongqing 401331, China

Received:2017-04-20 Revised:2016-06-20 Online:2017-08-20 Published:2020-10-13

摘要/Abstract

摘要： 为研究半受限空间油气无约束泄爆外场特性,基于爆炸力学、可燃气体爆炸超压评估法则和化学动力学等理论,建立评估外场爆燃超压的无量纲比例距离模型;采用模拟试验的研究方法,测量外场爆燃超压并记录火焰形态变化过程;基于此,分析外场超压与火焰形态变化规律,提出外场超压-比例距离变化半经验公式。结果表明:外场横纵方向上最大爆燃超压与比例距离成负指数函数关系;流场与火焰间的正反馈作用决定了火焰传播过程中的形态变化。

关键词: 油气, 半受限空间, 爆燃, 超压, 火焰

Abstract: External characteristics of gasoline-air mixture's free venting explosion in the semi-confined space were studied experimentally. A model was built for the relation between the overpressure and the dimensionless scaled distance based on the chemical kinetics of explosion and flammable gas explosion overpressure assessment method among others. According to the experimental results, a semi-empirical formula was worked out for the relation between external maximum overpressure and the scaled distance. The conclusion is that the maximum deflagration overpressure is a negative exponential function of the scaled distance and that the positive feedback effects between the flow field and flame lead to changes in the shape of flame during the propagation.

Key words: gasoline-air mixture, semi-confined space, deflagration, overpressure, flame

中图分类号:

X932

李阳超, 杜扬, 王世茂, 齐圣, 李国庆. 半受限空间油气无约束泄爆外场特性研究[J]. 中国安全科学学报, 2017, 27(8): 50-55.

LI Yangchao, DU Yang, WANG Shimao, QI Sheng, LI Guoqing. Study on external characteristics of gasoline-air mixture's free venting explosion in semi-confined space[J]. China Safety Science Journal, 2017, 27(8): 50-55.

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半受限空间油气无约束泄爆外场特性研究

Study on external characteristics of gasoline-air mixture's free venting explosion in semi-confined space

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