槽孔式水力驱动控制棒槽孔阻力系数实验研究

对槽孔式水力驱动控制棒槽对孔阻力系数进行了大量实验研究，获得了槽孔式水力驱动控制棒槽对孔阻力系数和其随槽对孔位移的变化规律，分析了槽对孔阻力系数与控制棒槽对孔结构参数之间的关系。结果表明：随槽对孔位移的增加，槽对孔阻力系数从某一较大的定值迅速降低到某一较小的定值，然后再迅速反回到初始的定值，形成一个对称的宽幅波谷；槽高使阻力系数曲线波谷幅宽发生变化，也使完全不重合段的阻力系数发生变化；随内套孔径的增大，阻力系数有所降低，其对阻力系数的影响也进一步减弱。孔径增大到一定程度，阻力系数基本不受孔径参数的影响。

Experimental Study on Resistance Coefficient of Chamfer-Hole for Hydraulic Drive Control Rod

An amount of experimental study on resistance coefficient of chamfer-hole for Hydraulic Drive Control Rod has been achieved.This paper obtained the resistance coefficient of chamfer-hole and the curve of resistance coefficient versus the displacement from chamfer to hole,and analyzed the relationship between the resistance coefficient and the structural parameters of chamfer-hole.The results are:with in creased displacement,the resistance coefficient reduces rapidly from the higher level to the lower level,then increases rapidly to the original level,thus forms a wide symmetry trough;increased the chamfer's height,the width of the trough part increases,and the resistance coefficient varies in the region where the chamfer and the hole don't face each other;the larger the inner tube hole,the less the resistance coefficient,and the weaker its effect on the resistance coefficient.After reaching a certain value,further increase of the inner tube hole doesn't affect the resistance coefficient.