高压静电场雾化过程中荷电微射流体的研究
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摘要
为了研究高压静电雾化过程中荷电微射流体液桥状态对雾化效果的影响,利用无动力空腔针–板放电装置,分析了影响荷电微射流体特性的因素。通过高速摄像机及图像分析软件,测量了不同电压和液体种类下液桥长度、液桥断裂后的平均粒径、雾化均匀度等参数。结果表明:液体介质的粘度系数和表面张力对液桥形成、状态有显著影响,粘度系数与液桥长度呈现正相关性;放电电压、微射流体模式是影响放电空间液滴平均粒径尺寸的主要因素。以雾化均匀度作为雾化效果的评价标准,该研究得出的优化电压值为25kV。
In order to study the influence of the fluid bridge state of charged micro jet on the atomization effect in the process of high voltage electrostatic atomization, we analyzed the factors influencing the characteristics of charged micro jet fluid by using a non-power cavity needle-plane discharge device. By using the high-speed camera and image analysis software, we studied the parameters such as liquid bridge length, average grain diameter after liquid bridge fracture, and atomization uniformity at different voltages and different types of liquid medium. The results show that the viscosity coefficient and surface tension of liquid medium have significant influences on the formation and the state of liquid bridge, and the viscosity coefficient is positively correlated with the length of liquid bridge. Discharge voltage and micro jet fluid model are the main factors influencing the average size of droplet in discharge space. When the atomization uniformity is taken as the evaluation standard of atomization effect, the optimal voltage value obtained in this paper is 25kV.
In order to study the influence of the fluid bridge state of charged micro jet on the atomization effect in the process of high voltage electrostatic atomization, we analyzed the factors influencing the characteristics of charged micro jet fluid by using a non-power cavity needle-plane discharge device. By using the high-speed camera and image analysis software, we studied the parameters such as liquid bridge length, average grain diameter after liquid bridge fracture, and atomization uniformity at different voltages and different types of liquid medium. The results show that the viscosity coefficient and surface tension of liquid medium have significant influences on the formation and the state of liquid bridge, and the viscosity coefficient is positively correlated with the length of liquid bridge. Discharge voltage and micro jet fluid model are the main factors influencing the average size of droplet in discharge space. When the atomization uniformity is taken as the evaluation standard of atomization effect, the optimal voltage value obtained in this paper is 25kV.
引文
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[14]李庆,谭国政,吉晓晓,等.泰勒锥形成与断裂影响因素[J].河北大学学报,2018,38(1):22-27.LI Qing,TAN Guozheng,JI Xiaoxiao,et al.Factors Influencing the formation and fracture of Taylorcone[J].Journal of Hebei University,2018,38(1):22-27.
[15]KRUPA A,JAWOREK A.Charged spray generation for gascleaningapplications[J].Journal of Electrostatics,2013,71(1):260-264.
[16]张永辉.毛细管静电雾化模式与电场特性研究[D].镇江:江苏大学,2016.ZHANG Yonghui.Investigation on characteristics of modes and electro-field in electrohydrodynamics(EHD)atomization with capillary[D].Zhenjiang,China:Jiangsu University,2016.
[17]王军锋,张仕超,左子文.感应荷电过程中喷雾荷电特性影响规律实验研究[J].高电压技术,2017,43(2):514-519.WANG Junfeng,ZHANG Shichao,ZUO Ziwen.Experimental study of influence rules on spray charged characteristics in the induction charging process[J].High Voltage Engineering,2017,43(2):514-519.
[18]李庆,刘志强,张晓军.一种空腔水电极放电雾化装置:ZL200910263946.6[P].2010-12-01.LI Qing,LIU Zhiqiang,ZHANG Xiaojun.A device of cavity hydroelectric discharge atomization:ZL200910263946.6[P].2010-12-01.
[19]果红忠.静电喷雾变量控制系统雾化效果的研究[D].重庆:西南大学,2013.GUO Hongzhong.Research on atomization effect of electrostatic spray variable control system[D].Chongqing,China:Southwest University,2013.
[2]王晓英.荷电液滴雾化机理的研究[D].镇江:江苏大学,2006.WANG Xiaoying.Study on the atomization mechanism of charged droplet[D].Zhenjiang,China:Jiangsu University,2006.
[3]陈汇龙,赵英春.感应荷电喷雾静电场与荷电特性分析[J].高电压技术,2010,36(10):2519-2524.CHEN Huilong,ZHAO Yingchun.Electrostatic induction field and charging droperty of droplet in electrostatic spraying process[J].High Voltage Engineering,2010,36(10):2519-2524.
[4]吴祖良,侯培,赵佳佳,等.电晕放电耦合湿式吸收同时脱硫脱硝的实验研究[J].高电压技术,2016,42(2):398-404.WU Zuliang,HOU Pei,ZHAO Jiajia,et al.Experimental study on simultaneous desulfurization and denitrification by corona discharge coupled wet absorption[J].High Voltage Engineering,2016,42(2):398-404.
[5]邓云天,陈汇龙,赵英春,等.石灰浆液高压静电雾化脱硫试验及机理研究[J].动力工程学报,2011,31(9):693-699.DENG Yuntian,CHEN Huilong,ZHAO Yingchun,et al.Lime slurry wet flue gas desulfurization based on high-voltage electrostatic atomization technology[J].Journal of Chinese Society of Power Engineering,2011,31(9):693-699.
[6]茹煜,周宏平,贾志成,等.航空静电喷雾系统的设计及应用[J].南京林业大学学报:自然科学版,2011,35(1):91-94.RU Yu,ZHOU Hongping,JIA Zhicheng,et al.Design and application of electrostatic spraying system[J].Nanjing Forestry University:Natural Science Edition,2011,35(1):91-94.
[7]苏清风,江惠东,袁雅妮.静电喷涂荧光渗透检测空心结构零件[J].无损检测,2014(11):62-65.SU Qingfeng,JIANG Huidong,YUAN Ya’ni.Electrostatic spraying fluorescent penetrant inspection of hollow-cored structure part[J].Nondestructive Testing,2014(11):62-65.
[8]王琪,柴江松,刘洪豪.基于纸张类型的静电数字印刷复制性能研究[J].科学技术与工程,2015,15(23):178-183.WANG Qi,CHAI Jiangsong,LIU Honghao.Research on reproduction properties of electrophotography digital printing based on paper type[J].Science Technology and Engineering,2015,15(23):178-183.
[9]CHANG C L,CHU T F,HSU C S,et al.Preparation and characterization of reticular SSC cathode films by electrostatic spray deposition[J].Journal of the European Ceramic Society,2012,32(4):915-923.
[10]彭如振,李荣兴,俞小花,等.等离子喷涂参数对TiB2可湿润阴极涂层沉积效率的影响[J].金属热处理,2016,41(3):37-42.PENG Ruzhen,LI Rongxing,YU Xiaohua,et al.Effect of atmospheric plasma spraying parameter on deposition efficiency of Ti B2 wettable cathode coating[J].Heat Treatment of Metals,2016,41(3):37-42.
[11]尹鹏腾,韩雪山,毕铎,等.高压静电雾化液体的测试研究[J].通信电源技术,2014,31(3):68-70.YIN Pengteng,HAN Xueshan,BI Duo,et al.High voltage electrostatic atomization of a liquid test[J].Telecom Power Technologies,2014,31(3):68-70.
[12]李庆,刘晓娃,剧晓晨,等.针-板电极负电晕放电下离子分布状态的影响因素[J].高电压技术,2017,43(5):1700-1706.LI Qing,LIU Xiaowa,JU Xiaochen,et al.Influencing factors of the ions distribution under the needle to plate negative corona discharge[J].High Voltage Engineering,2017,43(5):1700-1706.
[13]李庆,殷宇朝,刘晓娃,等.雾化液滴在高压静电场中的动力学过程[J].高电压技术,2017,43(2):520-525.LI Qing,YIN Yuchao,LIU Xiaowa,et al.Dynamics process of atomization droplets in the high voltage electrostatic field[J].High Voltage Engineering,2017,43(2):520-525.
[14]李庆,谭国政,吉晓晓,等.泰勒锥形成与断裂影响因素[J].河北大学学报,2018,38(1):22-27.LI Qing,TAN Guozheng,JI Xiaoxiao,et al.Factors Influencing the formation and fracture of Taylorcone[J].Journal of Hebei University,2018,38(1):22-27.
[15]KRUPA A,JAWOREK A.Charged spray generation for gascleaningapplications[J].Journal of Electrostatics,2013,71(1):260-264.
[16]张永辉.毛细管静电雾化模式与电场特性研究[D].镇江:江苏大学,2016.ZHANG Yonghui.Investigation on characteristics of modes and electro-field in electrohydrodynamics(EHD)atomization with capillary[D].Zhenjiang,China:Jiangsu University,2016.
[17]王军锋,张仕超,左子文.感应荷电过程中喷雾荷电特性影响规律实验研究[J].高电压技术,2017,43(2):514-519.WANG Junfeng,ZHANG Shichao,ZUO Ziwen.Experimental study of influence rules on spray charged characteristics in the induction charging process[J].High Voltage Engineering,2017,43(2):514-519.
[18]李庆,刘志强,张晓军.一种空腔水电极放电雾化装置:ZL200910263946.6[P].2010-12-01.LI Qing,LIU Zhiqiang,ZHANG Xiaojun.A device of cavity hydroelectric discharge atomization:ZL200910263946.6[P].2010-12-01.
[19]果红忠.静电喷雾变量控制系统雾化效果的研究[D].重庆:西南大学,2013.GUO Hongzhong.Research on atomization effect of electrostatic spray variable control system[D].Chongqing,China:Southwest University,2013.
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