方形容器爆燃泄放过程中的压力特性实验研究

doi:10.3969/j.issn.1000-1093.2017.04.013

兵工学报 ›› 2017, Vol. 38 ›› Issue (4): 722-727.doi: 10.3969/j.issn.1000-1093.2017.04.013

方形容器爆燃泄放过程中的压力特性实验研究

赵天辉¹，高康华¹，王明洋¹，李斌²，孙松¹，郭强¹

(1.解放军理工大学爆炸冲击防灾减灾国家重点实验室, 江苏南京 210007； 2.南京理工大学化工学院，江苏南京 210094)

收稿日期:2016-07-26 修回日期:2016-07-26 上线日期:2017-06-06
通讯作者: 王明洋(1966—),男，教授，博士生导师 E-mail:wmyrf@163.com
作者简介:赵天辉（1993—），男，硕士研究生。E-mail:zth0210@163.com
基金资助:
国家自然科学基金青年科学基金项目（51308542）

Experimental Study of Pressure Characteristics during Deflagration Venting in a Square Vessel

ZHAO Tian-hui¹, GAO Kang-hua¹, WANG Ming-yang¹, LI Bin², SUN Song¹, GUO Qiang¹

(1.State Key Laboratory for Explosion & Impact and Disaster Prevention & Mitigation, PLA University of Science & Technology, Nanjing 210007, Jiangsu, China; 2.School of Chemical Engineering， Nanjing University of Science and Technology，Nanjing 210094, Jiangsu, China)

Received:2016-07-26 Revised:2016-07-26 Online:2017-06-06

摘要/Abstract

摘要： 对乙烯-空气预混气体在一端开口的方形容器内泄爆过程进行了实验研究，分析了泄爆面积、泄爆压力和气体浓度对泄爆过程中压力发展和分布特性的影响，结合容器内压力峰值的变化对现有经验公式进行了讨论。结果表明：小面积泄爆时容器内压力出现明显的双峰值现象，且气体浓度主要影响第2个峰值的大小；大面积泄爆时气体浓度对压力峰值影响较小；泄爆面积较小且容器内预混气体接近最佳浓度时方形容器内压力分布梯度明显，远离最佳浓度或泄爆面积较大时容器内压力分布均匀；经验公式计算值与实验值之间的误差随工况变化很大。研究结论为方形容器和建筑物泄爆安全设计提供参考。

关键词: 爆炸力学, 爆燃泄放, 泄爆面积, 压力分布, 气体浓度

Abstract: Experiments were conducted to study the explosion venting process of the ethylene-air mixtures in a square vessel with an open at one end. The influences of venting area,venting pressure and gas concentration on the development and distribution characteristics of pressure in the explosion venting process are studied, and some empirical formulas are discussed with the change of peak pressure in the vessel. Results show that, for small venting area, the pressure shows obvious double peak phenomenon in the vessel, and the gas concentration mainly influences the second peak value; for large venting area, the gas concentration has little influence on the peak pressure; for small venting area and premixed gases closed to optimum concentration, the distribution of gas pressure in the vessel has remarkable gradient, and the distribution of pressure in the vessel is uniform; the error between the calculated value and experimental value varies greatly under different operating conditions. Key

Key words: explosionmechanics, explosionventing, ventingarea, pressuredistribution, gasconcentration

中图分类号:

O389

赵天辉，高康华，王明洋，李斌，孙松，郭强. 方形容器爆燃泄放过程中的压力特性实验研究[J]. 兵工学报, 2017, 38(4): 722-727.

ZHAO Tian-hui, GAO Kang-hua, WANG Ming-yang, LI Bin, SUN Song, GUO Qiang. Experimental Study of Pressure Characteristics during Deflagration Venting in a Square Vessel[J]. Acta Armamentarii, 2017, 38(4): 722-727.

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方形容器爆燃泄放过程中的压力特性实验研究

Experimental Study of Pressure Characteristics during Deflagration Venting in a Square Vessel

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