大气压交流旋转滑动弧的放电特性

发布时间：2018-01-09 18:20

本文关键词：大气压交流旋转滑动弧的放电特性　出处：《高电压技术》2017年09期 　论文类型：期刊论文

【摘要】：为研究气体流量和施加电压对旋转滑动弧放电的电信号与电弧运动规律的影响,采用3种不同几何结构的电极分别进行了大气压交流旋转滑动弧放电实验,并记录了其电信号和放电图像。结果表明:滑动弧放电过程中存在2种滑动放电模式,即稳定滑动放电(A-G)和伴随击穿滑动放电(B-G),2者在电信号特征和电弧运动形态上存在明显不同,并受气体体积流量、施加电压等因素的影响;流场环境和施加的电压对电弧形态及发展过程影响显著,随着气体体积流量的增大,滑动弧放电由A-G模式向B-G模式发展;对于E-1型电极,当气体体积流量较大时(77 L/min),电弧滑动周期较小(9 ms),且出口截面电弧旋转速度较大(11 m/s);随着施加电压幅值的增大,电弧滑动放电模式由B-G模式向A-G模式发展,且出口截面电弧旋转速度增大。实验结果对于揭示大气压交流滑动弧放电机理具有参考价值。
[Abstract]:In order to study the effect of gas flow rate and applied voltage on electrical signal and arc motion of rotating sliding arc discharge, three kinds of electrodes with different geometry were used to carry out AC rotating sliding arc discharge experiments at atmospheric pressure. The electrical signals and discharge images are recorded. The results show that there are two kinds of sliding discharge modes in the process of sliding arc discharge: stable sliding discharge (A-G) and accompanied breakdown sliding discharge (B-G). (2) there are obvious differences in electric signal characteristics and arc motion patterns, which are influenced by gas volume flow rate, applied voltage and other factors; The flow field environment and applied voltage have a significant effect on the arc shape and development process. With the increase of gas volume flow rate, the sliding arc discharge develops from A-G mode to B-G mode. For the E-1 type electrode, when the gas volume flow rate is larger, the arc sliding period is smaller than 9 Ms / min, and the arc rotation velocity of the exit section is higher than 11 m / s ~ (-1). With the increase of the applied voltage amplitude, the arc sliding discharge mode develops from B-G mode to A-G mode. The rotating velocity of the arc at the outlet section increases. The experimental results are valuable for revealing the mechanism of AC sliding arc discharge at atmospheric pressure.
【作者单位】：空军工程大学航空航天工程学院;
【基金】：国家自然科学基金(51436008) 陕西省自然科学基金(2015jq5124)~~
【分类号】：O461
【正文快照】： 0引言1滑动弧放电是一种在大气压下产生的非平衡态低温等离子体气体放电形式[1-3]。其基本原理是,在1对或者多个电极上施加强电场激励,使阴阳极之间产生电弧通道,在电极间隙中的气流吹动下,放电电弧会在电极之间沿着气流方向滑动,从而产生滑动放电[4-5]。在滑动弧放电过程中,

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