关键词: 旋风分离器, 升气管, 插入深度, 直径, 分离效率, 切向速度, 轴向速度

Abstract: The vortex finder is the core component of the vortex separator, and its insertion depth and diameter are critical to the separation performance. To further clarify the relationship between the maximum efficiency insertion depth and diameter of the vortex finder, a combined method of numerical simulation and experiments is employed to analyze the effects of the insertion depth on the separation efficiency and flow field under different diameters of the vortex finder. The results indicate that as the insertion depth of the vortex finder increases, the separation efficiency of the vortex separator first increases and then decreases, revealing the existence of a maximum efficiency insertion depth, which varies with the diameter of the vortex finder. The flow field mechanism forming the maximum efficiency insertion depth is also revealed. Based on experimental data, a formula for calculating the maximum efficiency insertion depth of the vortex finder is derived, aiming to provide assistance for the design of vortex finders in vortex separators.

Key words: cyclone separator, vortex finder, insertion depth, diameter, separation efficiency, tangential velocity, axial velocity