方形容器爆燃泄放过程中的压力特性实验研究

发布时间：2018-03-15 10:14

本文选题：爆炸力学　切入点：爆燃泄放　出处：《兵工学报》2017年04期 　论文类型：期刊论文

【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。
[Abstract]:In this paper, the experimental study on the venting process of ethylene air premixed gas in a square vessel with an opening at one end is carried out, and the effects of venting area, venting pressure and gas concentration on the pressure development and distribution in the process of venting are analyzed. Combined with the variation of the peak pressure in the vessel, the existing empirical formulas are discussed. The results show that the pressure in the vessel appears obvious double peak when the explosion is small area, and the gas concentration mainly affects the size of the second peak value. The gas concentration has little effect on the peak pressure when the explosion is large and the pressure gradient in the square vessel is obvious when the explosion area is small and the premixed gas in the vessel is close to the optimum concentration. The pressure distribution in the vessel is uniform when it is far from the optimum concentration or large explosion discharge area, and the error between the calculated value of empirical formula and the experimental value varies greatly with the working conditions. The conclusion of the study provides a reference for the safety design of explosion release in square container and building.
【作者单位】：解放军理工大学爆炸冲击防灾减灾国家重点实验室;南京理工大学化工学院;
【基金】：国家自然科学基金青年科学基金项目(51308542)
【分类号】：X932

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