摘要
为获得大气压大面积射流低温等离子体,在大气压He中产生稳定的2维射流阵列放电,并通过发光图像、电压电流波形、Lissajous图研究其发光特性和电气特性。在此基础上,研究了电极结构、电压幅值、气体体积流量对2维射流阵列放电特性和均匀性以及射流长度、放电功率和传输电荷等关键放电参数的影响。结果表明:针–环和针–环–板结构的射流阵列在一定条件下都能产生均匀、稳定的等离子体射流阵列。电压幅值的增加对放电均匀性影响不大,但能有效提高射流阵列的放电功率和射流长度,从而提高射流阵列放电强度;气体体积流量对放电强度影响较小,但对放电均匀性影响较大,因此增大气体体积流量可以提高放电均匀性;电极结构对放电功率和传输电荷影响较少,在电压幅值、气体体积流量较小的情况下,板电极的引入有助于获得更长的射流。
In order to obtain jet plasma with large area, a stable two-dimensional plasma jet array discharge in He is generated at atmosphere pressure, and its lighting emission and electrical characteristics are investigated through emission images, voltage and current waveforms, and Lissajous figures. The influences of electrode structure, voltage amplitude, and gas volume flow rate on discharge characteristics, uniformity and length, and the key discharge parameters of discharge power and transported charges of the two-dimensional jet arrays are researched. The results show that the jet arrays with both the needle-ring and the needle-ring-plate electrode structures can produce homogeneous and stable plasmas with relative large area. The increasing of applied voltage amplitude has little effect on discharge uniformity, but can effectively improve the discharge power and jet length, thus improve the discharge strength of the jet arrays. The gas flow rate has a slight effect on discharge strength but has a remarkable influence on the discharge uniformity, and increasing the gas flow rate can improve the uniformity of the jet array. The electrode structure has a slight effect on discharge power and transported charge. In the case of small applied voltage amplitude and low gas flow rate, the introduction of the plate electrode in the needle-ring-plate electrode structure is benefit for obtaining the jets with longer length.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2016年第4期1151-1158,共8页
High Voltage Engineering
基金
国家自然科学基金(51377075)
江苏省自然科学基金(BK20131412)
江苏省高校自然科学研究项目(14KJB470004)
江苏省高校"青蓝工程"项目(20140610)~~
关键词
低温等离子体
射流
射流阵列
发光特性
电气特性
电极结构
low temperature plasma
jet
jet array
lighting emission characteristics
electrical characteristics
electrode structure
