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为研究动车组支柱绝缘子伞裙不同部位积污特性,将动车组支柱绝缘子伞裙分为迎风面、背风面和侧风面,建立了积污特性的流场计算模型,以质量沉积率为表征积污特性的参数,分析了不同部位质量沉积率与污秽颗粒粒径、气流速度之间的关系,比较了不同部位质量沉积率的差异性。仿真结果表明:迎风面和侧风面质量沉积率随污秽颗粒粒径的增大而增大,背风面质量沉积率随污秽颗粒粒径的增大而减小;不同部位质量沉积率与气流速度的关系受污秽颗粒粒径的影响,当污秽颗粒的粒径大于10μm时,随着气流速度增大,迎风面和侧风面质量沉积率增大,背风面质量沉积率保持为0,在相同污秽颗粒粒径和气流速度条件下,迎风面质量沉积率大于侧风面,而当污秽颗粒的粒径小于10μm时无上述规律。
In order to study the fouling characteristics of the different parts of the umbrella insulator of the pillar insulator of EMU, the umbrella skirt of the insulator of the EMU pillar insulator is divided into the windward surface, the leeward surface and the crosswind surface, and the flow field calculation model of the fouling characteristics is established, characterized by the mass deposition rate The relationship between the mass deposition rate of different parts and the particle size and air velocity of the fouling particles was analyzed. The differences of mass deposition rate between the different parts were compared. The simulation results show that the mass deposition rate of the windward and side winds increases with the increase of the particle size of the fouling particles, and the deposition rate of the leeward mass decreases with the particle size of the foul particles. The mass deposition rate and the air velocity When the particle size of the fouling particles is more than 10μm, the mass deposition rate of the windward and side winds increases with the increase of air velocity, and the deposition rate of the leeward mass remains at zero Fouling particle size and airflow velocity conditions, the windward surface mass deposition rate is greater than the crosswind surface, and when the particle size of foul particles less than 10μm when the above rules.