气泡雾化喷嘴的试验研究

气泡雾化是一种新型的两相流雾化方法,具有更小的雾滴直径和更低的工作压力.为此,设计了一种新型农业施药用的气泡雾化喷嘴,并对其流量和雾化特性进行了实验研究.其试验结果发现:喷嘴的雾化特性主要受气液比的影响,流量特性比较复杂, 气体流量和液体流量之间相互影响,一相流量的变化必引起另一相的流量变化;水平喷射时,颗粒直径沿径向的分布不对称,下方沿径向增大;上方基本不变.喷嘴出口直径的大小对雾化质量影响较小.

Experimental Study on Effervescent Atomizer

Effervescent atomization is a new method of twin-fluid atomization, which leads to significant improvements in performance in terms of smaller drop sizes and lower injection pressures. We designed a new kind of effervescent Atomizer for pesticide application. Then studied the characteristics of flow rate and atomization. We find that the atomization is mainly governed by the air liquid mass ratio, the flow rate characteristics of the air and the liquid is complex, one fluid change may cause another change. The Sauter mean diameters are dissymmetry. Below the axes, The mean diameters along radial position increase with the increase of the distance to axis, while there is no evident change above the axes. The droplet size is largely independent of the final discharge orifice diameter.