基于TNT当量法的储罐内爆压力简化计算与应力分析

发布时间：2018-02-03 13:49

  本文关键词： 储罐 内爆 破坏 动力学 有限元　出处：《数学的实践与认识》2017年08期 　论文类型：期刊论文

【摘要】：以立式拱顶储罐为研究对象,综合考虑储罐内气体容积与几何结构的影响:依据TNT当量法推导了内爆载荷下储罐超压计算公式并计算得到了储罐内不同起爆点下的超压分布曲线.当起爆点在储罐中轴线时,罐顶或罐底压力约为相反侧的6倍;当起爆点在靠近罐壁一侧时,靠近爆炸点一侧的罐顶或罐底压力约为相反侧的30倍.最后,通过储罐内爆载荷下的动力学仿真计算,对储罐在不同起爆点和不同液位的破坏情况进行了评定.有限元计算结果表明:储罐在操作过程中应控制其液位在半罐以上,可保证在任意起爆点位置罐顶均先与罐底发生破坏.
[Abstract]:The vertical dome storage tank is taken as the research object. Considering the influence of gas volume and geometric structure in the tank:. According to the TNT equivalent method, the formula for calculating the overpressure of the storage tank under the implosion load is derived, and the distribution curve of the overpressure under different initiation points in the tank is obtained, when the ignition point is in the central axis of the tank. The pressure on the top or bottom of the tank is about 6 times that of the opposite side. When the initiation point is near the side of the tank wall, the pressure on the top or bottom of the tank near the side of the explosion point is about 30 times that of the opposite side. Finally, the dynamic simulation of the tank under the implosion load is carried out. The failure of the tank at different initiation points and different liquid levels is evaluated. The finite element calculation results show that the liquid level of the storage tank should be controlled above the half tank during operation. It can be guaranteed that the top of the tank is destroyed with the bottom of the tank at any starting point.
【作者单位】： 东北石油大学机械科学与工程学院;中国石化建设工程公司;
【基金】：国家自然科学基金青年基金项目(51604080) 中国石油和化学工业联合会科技指导计划项目(2016-01-01) 东北石油大学青年科学基金(NEPUQN2015-1-09)
【分类号】：TE972;TQ053.2
【正文快照】： 石油化工行业立式储罐中储存液态烃类物质,这类物质由于自身挥发物性会在罐体内积聚一定量可燃气体,当遇到外界诱因并达到爆炸极限后就会发生燃烧爆炸[11.据相关部门统计,由于爆炸引发的事故是石油化工行业的最大威胁,每年造成了巨大的经济损失[21.从50年代起,国内外对于油罐，

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