Liquid Bridge Formed by Droplets Under Uniform DC Electric Field

被引：0
|
作者：
Li D. [1 ]
Wang T. [1 ]
Chen S. [1 ]
Liu Q. [1 ]
Xie Y. [1 ]
Liu C. [1 ]
机构：
[1] School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding
来源：
Gaodianya Jishu/High Voltage Engineering | 2021年 / 47卷 / 12期
关键词：
Droplet; Hydrodynamics; Liquid bridge; Multiphase flow; Uniform electric field;
D O I：
10.13336/j.1003-6520.hve.20201506
中图分类号：
学科分类号：
摘要：
Liquid bridge is often formed in transformer, oil-water separator and electric demulsifier under the action of electric field. The discharge phenomenon caused by the liquid bridge has a great influence on the normal operation and service life of equipment. In order to study the process and development of droplet bridging under a uniform DC electric field, a visual experimental system was designed and built. A number of experiments were carried out by changing the droplet size and voltage, and three types of liquid bridges, namely, columnar liquid bridge, pearl chain liquid bridge, and column cap liquid bridge, were observed. In the columnar liquid bridge phenomenon, a long liquid column connects the upper and lower plates, but the duration is short. After the liquid bridge broken, a large droplet is formed between the plates. In the phenomenon of pearl chain liquid bridge, a number of droplets are connected in series like a pearl necklace and last for a long time. There will be electric sparks between adjacent droplets. The discharge will lead to the breakup of droplet bridge and the formation of bubbles. In the columnar cap liquid bridge phenomenon, the short liquid column is connected with the large droplet placed on the lower plate, and the short liquid column breaks up quickly and lasts for a short time. © 2021, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：4396 / 4403
页数：7
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