等离子体射流参数对染污硅橡胶憎水迁移速率的影响

发布时间：2018-05-09 14:08

本文选题：复合绝缘子 + 硅橡胶　；参考：《高电压技术》2014年12期

【摘要】：硅橡胶的憎水性及憎水迁移性是复合绝缘子能够防治污闪事故的主要原因,快速提高染污硅橡胶材料的表面憎水迁移速率具有重要意义。为此,采用介质阻挡放电(DBD)产生的低温等离子体射流装置对染污后的硅橡胶材料进行了处理,研究了不同等离子体射流处理参数对染污硅橡胶憎水迁移速率的影响。研究结果表明:等离子体射流放电电压、射流处理间距、射流气体体积流量、染污灰密度(NSDD)等因素对提高染污硅橡胶憎水迁移速率有较大影响;外加射流放电电压幅值越高、射流气体体积流量越大,则射流处理后初始接触角越大、憎水迁移性越好;射流处理存在有效间距,等离子体与染污硅橡胶间距超过4 cm后,处理效果将大大降低;染污灰密度增大,射流处理后憎水性改善效果变差。分析实验结论推测等离子体射流作用过程中射流能量是促使憎水迁移速率加快的主要因素。
[Abstract]:The hydrophobicity and hydrophobicity of silicone rubber are the main reasons that composite insulators can prevent pollution flashover. It is of great significance to improve the surface hydrophobic migration rate of contaminated silicone rubber materials quickly. A low temperature plasma jet device produced by dielectric barrier discharge (DBD) was used to treat the contaminated silicone rubber material. The influence of different plasma jet treatment parameters on the hydrophobic migration rate of contaminated silicone rubber was studied. The results show that the discharge voltage of plasma jet, the treatment distance of jet, the volume flow of jet gas, the density of polluted ash and so on have great influence on the hydrophobic migration rate of contaminated silicone rubber, and the higher the discharge voltage amplitude of external jet is, The larger the volume flow of jet gas is, the greater the initial contact angle is and the better the hydrophobicity is after jet treatment, and the more effective the distance between plasma and contaminated silicone rubber is, the less the effect of treatment will be when the distance between plasma and contaminated silicone rubber exceeds 4 cm. The improvement of hydrophobicity after jet treatment becomes worse with the increase of ash density. The experimental results suggest that jet energy is the main factor to accelerate the hydrophobic migration rate during the process of plasma jet action.
【作者单位】：国网江苏省电力公司电力科学研究院;清华大学深圳研究生院;
【基金】：国网江苏省电力公司科技项目深圳市科技研发资金(JCYJ20130402145002399)~~
【分类号】：TM216

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