Abstract：In order to balance the axial thrust of centrifugal pumps,the experiment for the axial thrust of shortened impeller back shroud was done.By assuming different angular velocity for the liquid around impeller,the formula for calculating the axial thrust of shortened impeller back shroud was deduced.By contrasting the calculated values of three different back shroud diameters with measured ones,the revised values of a=0.65,b=0.95 and c=0.45 of angular velocities liquid around impeller were confirmed.The angular velocities for liquid in the blade bevel,in the excided back shroud and in the outside impeller shroud were 0.65ω,0.95ω and 0.45ω respectively,where ω was the impeller angular velocity.As a result,the derived formula provides theoretical basis for calculating the balance of axial thrust of shortened impeller back shroud
陆伟刚；李启锋；施卫东；王洪亮. 减小叶轮后盖板直径的轴向力试验[J]. 排灌机械工程学报, 2008, 26(1): 1-5.
LU Wei-gang, LI Qi-feng, SHI Wei-dong, WANG Hong-liang. Experiment for axial thrust of shortened impeller back shroud. Journal of Drainage and Irrigation Machinery Engin, 2008, 26(1): 1-5.
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