高速列车车顶绝缘子积污分布特性及优化策略

发布时间：2018-05-26 13:07

本文选题：污秽 + 绝缘子　；参考：《西南交通大学学报》2014年02期

【摘要】：针对冬季雨、雾环境电气化铁路高速列车车顶绝缘子积污问题,利用流体力学理论分析了高速气流中污秽颗粒的受力和运动,用聚团流化理论对绝缘子表面污秽受力后粘附与分离状况进行了分析,建立了流体力学仿真模型,研究了高速列车车顶绝缘子积污特性,提出了减少表面积污密度的策略.研究结果表明:低温环境高速气流中,车顶绝缘子迎风面与背风面积污较为严重,且主要分布在伞裙根部,侧面积污较轻分布于绝缘子伞裙;无伞棱结构污秽在绝缘子表面分布均匀,积污量较少;积污密度随伞裙下倾角的增大而渐增大,随伞裙间距的增大而减小,建议采用绝缘子伞裙上倾角为8°、下倾角为0°、伞裙下表面无伞楞的结构.
[Abstract]:In view of the pollution of roof insulators of electrified railway high-speed trains in the rain and fog environment in winter, the force and motion of contaminated particles in high speed airflow are analyzed by means of hydrodynamic theory. Based on the cluster fluidization theory, the adhesion and separation of insulator surface fouling were analyzed, the hydrodynamic simulation model was established, the fouling characteristics of roof insulators of high-speed trains were studied, and the strategies to reduce surface area pollution density were put forward. The results show that the pollution of windward and leeward area of roof insulator is more serious in low temperature and high speed airflow, and mainly distributed in the root of umbrella skirt, and the pollution of side area is lighter in insulator skirt. The contamination distribution on the surface of insulator is uniform and the amount of contamination is less. The density of contamination increases with the increase of inclination angle under the umbrella skirt, and decreases with the increase of the distance between the two skirts. It is suggested that the insulator skirt should have an angle of 8 掳on the top and 0 掳on the bottom of the skirt, and that the surface of the skirt has no corrugated surface.
【作者单位】：西南交通大学电气工程学院;青岛四方机车车辆股份有限公司;
【基金】：国家重点基础研究发展计划项目(2011CB711105-4) 国家自然科学基金资助项目(51107104);国家自然科学基金重点项目(U1134205)
【分类号】：TM216

【参考文献】