水力旋流器溢流余能回收技术探究

为了充分利用旋流器溢流剩余动能，利用水轮机发电原理，设计了一套于旋流器溢流管出口处安装的溢流余能回收装置。为探究该装置的余能回收效果以及对旋流器分级效果的影响，分别进行清水试验和煤泥分级试验，试验变量为旋流器入料压力、旋流器溢流管直径和叶轮叶片角。通过清水试验结果绘制入料压力与转轴转速关系图，得到清水条件下叶轮转速随着入料压力的增大而变大的规律，其中最佳叶轮叶片角为20°。对溢流余能回收效率进行了定性分析，得到20°叶轮的余能回收效率随入料压力增大先增后减的规律；通过煤泥分级试验得到最佳叶轮叶片角为15°，叶片的安装对旋流器分级效果基本无影响。

Surplus Energy Recovery on Overflow in Hydrocyclones

For the using of complementary energy of overflow pipe in hydrocyclone, energy recovery device which installed in overflow pipe port is designed by using the principle of turbine power generation. To study the effects of its residual energy recovery and the classification effect of hydrocyclone, clear water and coal slime grading test are respectively carried out. The test variables are feed pressure, overflow pipe diameter and impeller blade angle. According to the results of clear water experiment, feed pressure and rotor speed relation graph is drawn. It shows that impeller speed increased with the increase of feed pressure, and the optimal blade is 20°. Based on the qualitative analyses on the recovery efficiency of surplus energy, the laws of recovery efficiency of 20° impeller first increased and then decreased with the increase of feed pressure is obtained. Through fines grading test, the optimal blade angle is 15°, and there has no effect on the classification effect of hydrocyclone ( with or without a blade ).