Electric sectioning device of railway contact network

Abstract

The invention provides an electric sectioning device of a railway contact network, and relates to the technical field of rail transit. The electric sectioning device comprises section insulators, a contact network and an isolation switch. The section insulators comprise a first section insulator and a second section insulator; each section insulator comprises a sliding plate and an insulating rod,a pair of long sliding plates and a pair of short sliding plates are arranged on the sliding plate, air gaps are reserved between the long sliding plates and the short sliding plates, arc extinguishing angles are arranged at the ends of the long sliding plates and the short sliding plates, a contact network transition section is arranged between the first section insulator and the second sectioninsulator, and the isolation switch is arranged between the contact network transition section and the contact network. A series gap and isolation switch combined system solution is adopted so that the problem that the electrical gap of the sliding plate and the creepage distance of the insulating rod are increased on the single section insulator is avoided.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to an electrical segmenting device for a railway catenary. Background technique [0002] At present, the known electrified railway catenary subsection device has a structure in which the intermediate insulating rod is the main supporting force-bearing member, and the attached four metal slides are guide rails for the smooth passage of the locomotive pantograph. The air gap formed between the insulating rod and the sliding plate guide rail is the purpose of realizing the electrical isolation of the charged bodies at both ends of the segmental insulator. For 25kV electrified railways, when the altitude is below 1500m, the air gap value in our country is 300mm, and the creepage distance of insulating rods is 1600mm. As the altitude increases, both the air gap and the creepage distance of the insulating rod must be corrected and increased to meet the requirements of the electrical...

AI Technical Summary

Problems solved by technology

The increase of these two parameters will bring the following adverse consequences: (1) The longitudinal and transverse dimensions of the segmented insulator are increased, thereby increasing the weight, which is not conducive to the stability and current receiving quality of the locomotive pantograph when it passes, and increases Increases the risk of bowing when passing; (2) increases the number of non-standard parts used, which in turn increases manufacturing and procurement costs; (3) increases the workload of operation and maintenance

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