A Composite Insulator for Motor Car Roof with Anti-pollution Shed

Abstract

The invention relates to the field of motor trains, in particular to a motor train roof composite insulator with anti-fouling umbrella skirts. The motor train roof composite insulator with the anti-fouling umbrella skirts comprises a supporting body. The axially-arranged umbrella skirts are arranged around the side wall of the supporting body. The slant angle of the upper surfaces, relative to the radial section of the supporting body, of the umbrella skirts ranges from 8.5 degrees to 9.5 degrees. The slant angle, relative to the radial section of the supporting body, of the lower surfaces of the umbrella skirts ranges from -0.8 degree to -1.2 degrees. The umbrella skirts have the efficient anti-fouling capacity and has the good fouling accumulation characteristic under the dynamic environment, it is effectively ensured that the surfaces of the umbrella skirts are clean, pollution flashover is prevented, the motor train roof composite insulator is completely suitable for safe operation of the motor trains under the high wind speed condition, and meanwhile the phenomenon that rain flashover is caused due to the fact that the rainwater is easily connected into a chain shape when it rains heavily or intensely through the dense umbrella skirt structural design is avoided.

Description

technical field [0001] The invention relates to the field of motor vehicles, in particular to a composite insulator on the roof of a motor vehicle with an anti-pollution shed. Background technique [0002] With the opening of the world's first high-speed railway, Japan's Tokaido Shinkansen, on October 1, 1964, the development of high-speed EMUs has become increasingly widespread. After more than 40 years of continuous development, three technical systems of high-speed EMUs represented by the Japanese Shinkansen, the German ICE and the French TGV have basically been formed. Starting from the actual needs of each country, EMUs in each country have their own characteristics, which have played a very positive role in the development of high-speed railways in the world. [0003] France began to study TGV-PSE since 1976, and it was put into use in September 1981. In May 1990, the TGV-A325 train set reached a running speed of 515.3km per hour on the Atlantic line, creating a worl...

AI Technical Summary

Problems solved by technology

[0008] However, the slope of the upper surface and the lower surface of the umbrella skirt of the motor car roof composite insulator in the prior art is relatively gentle, and the anti-pollution ability is poor, especially in a dynamic environment, the pollution accumulation characteristics are poor, and the product cannot be effectively guaranteed. The cleanness of the surface is likely to cause pollution flashover, especially when the motor vehicle is running safely under high wind speed conditions, the relatively dense shed structure design is easy to connect rainwater into a chain under heavy rain or heavy rain, causing rain flash

[0009] In view of the above problems, there is an urgent need for a motor car roof composite insulator with anti-pollution sheds to solve the problem of poor anti-pollution ability of motor car roof composite insulators in the prior art

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