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利用多普勒激光测速仪，结合流体力学理论，试验分析了双锥体水力旋流器结构和操作参数对切向速度场的影响。试验分析表明，大锥段和小锥段切向速度分布规律基本相同，均由准自由涡和准强制涡构成，分界面半径ｒｍ没有变化；随着小锥角θ的增加，准自由涡区缩小，准强制涡区扩大，速度梯度增加会加大液滴的乳化程度；随入口流量增加，切向速度增大，经拟合得出大锥段和小锥段的最大切向速度均为入口流量的４９４倍；分流比加大，分界面半径基本不变，最大切向速度增加。指出合理选择小锥角θ，控制操作参数如入口流量Ｑｉ和分流比Ｆ，可得到较好的分离效果。
Using Doppler laser velocimeter and fluid mechanics theory, the influence of the structure and operating parameters of double cone hydrocyclone on the tangential velocity field was analyzed. Experimental analysis shows that the tangential velocity distribution of the large cone section and the small cone section are basically the same and are composed of quasi-free vortex and quasi-forced vortex. The radius of interface rm does not change. With the increase of the small taper angle θ, the quasi-free vortex area Shrinkage and quasi-forced vortex enlargement, and the increase of velocity gradient will increase the degree of emulsion of the droplets. With the increase of inlet flow rate, the tangential velocity increases. The maximum tangential velocity of the large and small cone sections is 4 94 times the inlet flow; diversion ratio increases, the interface radius is basically unchanged, the maximum tangential velocity increases. It is pointed out that a reasonable choice of small taper angle θ, the control of operating parameters such as inlet flow Qi and split ratio F, get a better separation effect.