爆炸容器内准静态气压实验研究

摘要

Because of explosion complexities, the investigation on quasi-static pressure after explosion was very scarce. But it was the foundation for safety assessment and failure analysis of explosive containment vessels (ECV). For studying quasi-static pressure in ECV, a reusable ECV of 195 mm in inside diameter and 8. 87 kg/m3 in the largest charge density ratio (Q/V) was designed. The static pressure time-varying law and the fitting equation bwtween quasi-static pressure and charge density ratio were obtained experimentally. The results show that there exists a quick increasing—exponential decreasing—re-rising—quasi-static process.%准静气压是爆炸容器安全设计和失效分析的主要参数,由于爆炸过程的复杂性,国内外对爆后准静态气压研究得较少.为了研究爆炸容器内准静态气压的规律,设计了内径195 mm,最大装药密度即装药量与体积比为8.87 kg/m3的可重复使用爆炸容器.通过实验获得了爆炸准静气压载荷随时间变化规律,存在一个气压快速上升—指数下降—回升—准静气压,获得了准静气压和装药量与体积比的拟合关系.