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通过实验研究了管径和气体入口条件对竖直管内淹没和流向反转的影响。实验结果表明,当气体入口阻力减小时,在一定的条件下,淹没开始点所对应的气体流量会大大提高。气体入口为直角时,管径不同对淹没开始点无影响。气体入口为喇叭口形时,管径对淹没开始点有影响。气体入口条件对全部携带点无影响,但管径对全部携带点有影响,管径越小全部携带点所对应的J_8值越大。管径及气体入口条件对流向反转点均无影响。气体入口条件对减少气流量的淹没消失点无影响,但管径不同对淹没消失点有影响。
The effects of tube diameter and gas inlet conditions on inundation and reversal of flow in a vertical tube were investigated experimentally. The experimental results show that when the gas inlet resistance decreases, the gas flow corresponding to the start of submergence will be greatly increased under certain conditions. Gas inlet at right angles, the diameter of the submerged start point has no effect. When the gas inlet is in the shape of a bellmouth, the pipe diameter has an influence on the starting point of inundation. Gas inlet conditions have no effect on the total carrying point, but the pipe diameter has an impact on the total carrying point. The smaller the pipe diameter, the larger the J_8 value corresponding to all the carrying points. Pipe diameter and gas inlet conditions have no effect on the reversal point. Gas inlet conditions have no effect on reducing the submergence and disappearance of gas flow, but different pipe diameters have an impact on the submergence vanishing point.