电极参数影响射流喷雾荷电量的试验研究  

Experimental Study of Electrode Parametersê Effect on Jet Spray Charge

作　　者：崔海蓉[1] 杨超珍[1] 余盛兵 周佳标 

机构地区：[1]宁波工程学院,宁波315016 [2]浙江元凯科技有限公司,宁波315010

出　　处：《高电压技术》2015年第12期4042-4047,共6页High Voltage Engineering

基　　金：国家高技术研究发展计划(863计划)(2008AA100905);宁波市工业择优项目(2010B10036)~~

摘　　要：为研究环形电极直径及其相对于喷头的布置方式对雾滴荷电效果的影响,在TR80-02C圆锥雾喷头上,采用5种不同直径的环形电极和5种安装位置进行全因素射流荷电喷雾试验,用网状目标法测量群体雾滴的荷电电流、总质量和试验时间,用荷质比来评价雾滴的感应荷电性能。详细分析荷电电压、电极环直径和安装位置对雾滴荷质比的影响,并在理论上对其显示的特性和机理给出科学的解析。试验结果表明:荷电量随作用于电极上的荷电电压提高而增大;电极环直径增大,雾滴的荷电量反而减小;电极安装位置沿喷射方向前移,其雾滴荷电量增大;荷电量与电极环直径和安装位置间存在线性关系。通过进一步分析,构建了荷电系数与电极参数和位置关系的经验公式,该公式可用于计算和预测感应电极荷电量,为电极参数与静电喷头的合理设计提供科学依据。To study the effect of electrode diameter and its relative position to the nozzle on the induction charging per- formance, we conducted the experiment for all-factor jet charged spray at a TR80-02C cone nozzle by selecting five electrode ring diameters and five installation positions. In the meantime, we used the net target method to measure the current, total mass and test time of group droplets, and used the charge-mass ratio to evaluate the induction charging per- formance. Moreover, we analyzed the effects of charging voltage, electrode ring diameter, and installation position on charging volume in detail, and got the theoretical explanations on the characteristics shown in the experiment and the mechanism. The results indicate that the charging Capacity will increase with the increase of charging voltage,and de- crease with the increase of electrode ring diameter. The charging capacity will increase while the electrode position goes forward along the spraying direction. There is a distinct linear relation among the charging capacity, charging voltage, and electrode position. Through further analysis, an empirical formula of the relationship between the coefficient of charge and the electrode parameters and position can be constructed. This formula can be used to calculate and predict the load capacity of the inductive electrode, providing the scientific basis for the reasonable design of the electrode parameters and electrostatic spray nozzle.Through further analysis, empirical formulae for computing the charging coefficient and posi- tion can be obtained to calculate and predict the electrode charging capacity, providing the scientific basis for electrode parameters and electrostatic spray.

关 键 词：静电喷雾 感应荷电 环形电极 喷头设计 电极参数 布置方式 

分 类 号：S491[农业科学—植物保护]