排灌机械工程学报
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排灌机械工程学报  2019, Vol. 37 Issue (6): 521-527    DOI: 10.3969/j.issn.1674-8530.17.0144
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喷针-环形电极配置对感应荷电喷雾的影响
刘建河1,李星光2*,许晏铭3
长春理工大学机电工程学院, 吉林 长春130000
Influence of needle-ring electrode configuration on induction charging spray
LIU Jianhe1, LI Xingguang2*, XU Yanming3
College of Mechanical and Electrical Engineering, Changchun University of Science and Technology, Changchun, Jilin 130000, China
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摘要 为充分了解喷针-环形电极配置对静电喷雾所产生的雾滴荷电性能的影响,以Ansoft Maxwell电磁场分析软件为工具,对感应荷电喷雾中喷针与环形电极的各种配置情况进行了数值模拟计算,得出了在不同电极配置方式下静电场的分布特征,并以此为依据,结合感应荷电的原理进行了喷针-环形电极配置对电喷雾雾化效果的试验.结果表明:在所有的喷针-环形电极配置方式下,喷针周围电场强度均为最高并且沿着轴向方向迅速减弱;通过增加充电电压或改变电极配置中的相关几何尺寸,针尖周围的电场强度也随之升高;在考察的几组电极参数中,喷针长度为25mm,环形电极厚度为4mm时,所得到的电场强度最高,感应荷电效果最好.喷针与环形电极相对位置的不同会导致电场方向出现很大差异,进而导致雾滴的运动轨迹不同.仿真结果可为电极结构的合理配置以及感应荷电喷雾的雾化效果提供设计基础和理论依据.
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刘建河
李星光*
许晏铭
关键词电喷雾   感应荷电   喷针-环形电极   数值模拟     
Abstract: In order to fully understand the influence of needle-ring electrode configuration on the pro-perties of charged droplets in electro-spray, the software Ansoft Maxwell was taken as a tool, the diffe-rent needle-ring configurations were simulated, and the electrostatic distribution pattern can be achieved from the simulation results. Based on the simulation results, combined with the induction charging principle, we made some experiments on the influence of the electrode configuration on ato-mized droplets properties. The results show that the electric field intensity around the spray needle is the highest and decreases rapidly along the axial direction under all the spray needle-annular electrode configurations. The electric field intensity around the spray needle increases with the increase of charging voltage or the change of the relevant geometrical size of the electrode configurations. Among the electrode parameters investigated, when the spray needle length is 25 mm and the annular electrode thickness is 4 mm, the electric field intensity obtained is the highest and the induction charging effect is the best. The difference of relative position between the spray needle and the annular electrode will lead to a great difference in the direction of electric field, which will lead to different trajectories of droplets. The simulation results provide the design basis and theoretical basis for the rational configuration of electrode structure and the atomization effect of induction charged spray.
Key wordselectro-spray   inductive charging   needle-ring electrode   numerical simulation   
收稿日期: 2017-06-23;
基金资助:吉林省自然科学基金资助项目(20170101118JC)
引用本文:   
刘建河,李星光*,许晏铭. 喷针-环形电极配置对感应荷电喷雾的影响[J]. 排灌机械工程学报, 2019, 37(6): 521-527.
LIU Jian-He-,LI Xing-Guang-*,XU Yan-Ming-. Influence of needle-ring electrode configuration on induction charging spray[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(6): 521-527.
 
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