摘要
周向引入旋流喷嘴能够有效提高喷嘴内部的液体流速和外流场的雾化效果。针对影响旋流喷嘴的关键参数(射流管直径、喷嘴出口直径、射流水压),分别利用流体动力学软件仿真和实验测试研究了旋流喷嘴内外流场。结果表明:旋流喷嘴上部中心区域压力较低,旋流提高了喷嘴内部水流的速度;在旋流喷嘴内部,随着射流管直径的增大,喷嘴轴线的速率会随之增加,喷嘴内部射流速度均沿着轴线方向表现出单调增加的变化规律;雾化粒度D50随着射流水压和射流管直径的增加而减小;雾化粒度D50随喷嘴出口直径的增加均表现出单调增加的变化。确定最佳喷嘴出口直径为3 mm,射流管直径为4 mm。
The vortex nozzle with circumferential entered can effectively improve the inside fluid flow velocity of the nozzle and atomization effect of flow field. Aiming at the key parameters of vortex nozzle ( jet pipe diameter, nozzle outlet diameter and jet pres-sure), the inside and outside flow fields of vortex nozzle were researched respectively by using the fluid dynamic software simulation and experimental test. The results show that the swirl nozzle upper center area pressure is low, the vortex improves the speed of internal nozzle flow; inside the vortex nozzle, with the increasing of jet pipe diameter, the flow velocity of nozzle axis increases, the nozzle inside jet speed along the axis direction show the changing rule of monotone increasing; atomized particle size D 50 decreases with the increasing of jet pressure and jet pipe diameter; atomized particle size D 50 increases with the increasing of nozzle outlet diameter. The best nozzle outlet diameter of 3 mm, jet pipe diameter of 4 mm are determined.
作者
介石磊
刘兴亚
张明
JIE Shilei;LIU Xingya;ZHANG Ming(School of Automotive Engineering, Huanghe Jiaotong University, Jiaozuo Henan 454950, China;School of Mechanical Engineering, Zhengzhou Information Science and Technology Vocational College, Zhengzhou Henan 450000, China;College of Mechanical Engineering, Henan University of Technology, Jiaozuo Henan 454224, China)
出处
《机床与液压》
北大核心
2019年第1期53-55,32,共4页
Machine Tool & Hydraulics
关键词
压力喷嘴
喷雾压力
雾化粒度
Pressure nozzle
Spray pressure
Atomized particle size
