高电压技术2016，Vol.42Issue(3)：731-738,8.DOI:10.13336/j.1003-6520.hve.20160308015
多针-平板电极气液两相介质阻挡的放电特性
Discharge Characteristic of Multiple Needles to Plate Dielectric Barrier Discharge in Gas-liquid Mixture
摘要
Abstract
In order to further understand the mechanism and characteristics of dielectric barrier discharge (DBD) in gas-liquid mixture, the electrical and optical characteristics of DBD in gas-liquid mixture with multiple needles to plate electrode structure were measured.The changing trends of electrical parameters and intensities of the main particles with the applied voltage were studied.Moreover, the equivalent electrical model for DBD in gas-liquid mixture was established according to experimental results, and it was used to analyze the experimental results.Results show that the discharge characteristics of DBD in gas-liquid mixture are similar to those in pure gas, but the impact of liquid resistance on the discharge should be taken into account.Its discharge current is in resistance-capacitance type, whose phase angle leads that of voltage less than 90 °.A large number of N2, O, OH, and other high-active particles are produced in gas phase of the discharge, and the discharge power, transmission charge, electron density and the main discharge parameters increase with the increasing of applied voltage but the gas capacitance decreases with the increasing of applied voltage.When the applied voltage is 20.5 kV, their values are 78 W, 1 060 nC, 1.87×1011 cm-3 ,and 8.07 pF, respectively.The gas discharge can be equivalent to a voltage-controlled current source (VCCS), resistance and variable capacitance, and the liquid can be equivalent to a variable resistor, whose value is calculated to be 825 Ω before discharge.关键词
低温等离子体/介质阻挡放电/多针电极/气液两相/放电特性/发光图像/发射光谱/电气模型Key words
low temperature plasma/dielectric barrier discharge/multiple needle electrode/gas-liquid mixture/discharge characteristics/light-emission pictures/optical emission spectroscopy/electrical model引用本文复制引用
方志,谈坚,杨静,阮陈..多针-平板电极气液两相介质阻挡的放电特性[J].高电压技术,2016,42(3):731-738,8.基金项目
国家自然科学基金(51377075) （51377075）
江苏省自然科学基金(BK20131412) （BK20131412）
江苏省高校自然科学研究项目(14KJB470004) （14KJB470004）
江苏省高校"青蓝工程"项目(20140610).Project supported by National Natural Science Foundation of China (51377075), Natural Science Foundation of Jiangsu Province (BK20131412),Natural Science Foundation of the Jiangsu High Education (14KJB470004),‘Qing Lan Project’ of Jiangsu Province (20140610). （20140610）
