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Motor train roof composite insulator with interface breakdown prevention function

A composite insulator, motor vehicle roof technology, used in insulators, insulators, motor vehicles, etc., can solve problems such as unfavorable withstand impulse voltage, interface breakdown, etc. big effect

Inactive Publication Date: 2014-08-06
BEIJING RAILWAY INST OF MECHANICAL & ELECTRICAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the above problems, there is an urgent need for an EMU roof composite insulator with anti-interface breakdown to solve the problems in the prior art that the arrangement of sheds is not conducive to withstand the impact voltage and easily causes interface breakdown

Method used

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  • Motor train roof composite insulator with interface breakdown prevention function

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Embodiment Construction

[0029] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0030] Aiming at the deficiencies of the prior art, this embodiment provides a new composite insulator, the structure of which is as follows figure 2 As shown, the motor car roof composite insulator with anti-interface breakdown includes a support body 21, and at least 5 groups of the sheds 22 arranged side by side in the axial direction are arranged around the side wall of the support body 21, wherein the at least 5 groups The set of sheds includes: each of at least four sheds 22 at the upper end includes a large umbrella and a small umbrella, and at least one set of sheds 22 at the lowermost end includes two small umbrellas.

[0031] In this embodiment, as a preferred solution, the diameter of the large umbrella is 172mm-180mm.

[0032] In this embodiment, as a preferred solution, the diameter o...

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Abstract

The invention relates to the field of motor trains, in particular to a motor train roof composite insulator with the interface breakdown prevention function. The motor train roof composite insulator with the interface breakdown prevention function comprises a supporting body. At least five sets of umbrella skirts are arranged side by side in the axial direction by surrounding the side wall of the supporting body. According to the at least five sets of umbrella skirts, the at least four umbrella skirts located at the upper end respectively comprise a large umbrella and a small umbrella, and the at least one set of umbrella skirts at the bottommost end respectively comprise two small umbrellas. Due to the improved umbrella skirt structure, surge voltage withstanding is facilitated, an interface is not easily broken down, even, the intensity of an electric field of the improved interface is not larger than 3 kV / mm, and interface breakdown does not occur even if gas exists in the interface.

Description

technical field [0001] The invention relates to the field of motor vehicles, in particular to a composite insulator for motor vehicle roofs capable of preventing interface breakdown. 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/14H01B17/42
CPCH01B17/14H01B17/525B61C3/00B61C17/00H01B17/56
Inventor 黎莎刘广丹王乐仁沈晓清刘江峰
Owner BEIJING RAILWAY INST OF MECHANICAL & ELECTRICAL ENG
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