关键词: 甩油盘;旋转雾化;液雾分布;多普勒相位分析仪

Abstract: In order to improve the atomization quality of slinger, the atomization characteristics of a blade slinger with three different outlets was studied by experimental research methods, and compared with the slinger with only one round hole. The research shows that the spray SMD (Sauter mean diameter) becomes smaller and the concentration decreases as rotating speed increases. When flowrate increases, the spray concentration increases, the slinger with one round hole’s spray SMD become larger but the blade slinger’s spray SMD changes irregularly. The spray SMD is inversely proportional to the concentration as a whole, where the SMD is smaller, the concentration is larger; where the SMD is larger, the concentration is smaller. The spray SMD first becomes smaller then becomes larger with the increase of radial distance. When the rotating speed is greater than 12kr/min, the minimum SMD point is about 20mm away from the outlet in radial distance. Under the same flowrate and rotating speed, the slinger with one round hole’s spray SMD is smaller, but the blade slinger’s spray has better uniformity and a wider axial distribution range. Slotting after the outlet of blade slinger can significantly reduce the spray SMD; the zigzag outlet can increase the spray concentration and reduce the spray SMD when the rotating speed is low.

Key words: Slinger;Rotating atomization;Spray distribution;PDPA