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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.
Taking the vertical vault storage tank as the research object, the influence of gas volume and geometry structure in the storage tank was comprehensively considered: According to TNT equivalent method, the calculation formula of overpressure of tank under implosion load was deduced and the different initiation points Under the overpressure distribution curve.When the detonation point in the tank axis, the tank top or tank bottom pressure is about 6 times the opposite side; when the detonation point near the tank wall side, near the top of the explosion tank roof Or the pressure at the bottom of the tank is about 30 times of the opposite side.Finally, the damage of the tank at different initiation points and different liquid levels is evaluated by the dynamic simulation calculation under the implosion load of the tank.The finite element calculation results show that : The tank should be controlled in the process of its liquid level in more than half a tank can be guaranteed at any initiation point where the top of the tank and tank bottom are destroyed.