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Railway switch high-voltage casing pipe

A technology for high-voltage bushings and switches, applied in circuits, multi-conductor connectors, electrical components, etc., can solve problems such as cracking and failure of copper parts and solid-sealing materials, reduce partial discharge, improve insulation life, and reduce volume Effect

Inactive Publication Date: 2019-06-07
BEIHAI GALAXY SWITCH DEVICES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cases of failure of existing solid-sealed bushings due to heat occur from time to time
It is urgent to solve the problem of cracking between copper parts and sealing materials caused by thermal expansion and cold contraction

Method used

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  • Railway switch high-voltage casing pipe
  • Railway switch high-voltage casing pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Such as figure 1 and figure 2 As shown, a railway switch high-voltage bushing includes a cable connection end 1, a switch connection end, a conductive copper piece, an insulating layer 4, a semi-conductive shielding layer 7, and a semi-conductive buffer layer 11. The cable connection end has a cable sealing cone 2 With the cable end flange 3, the switch connection end has an outer cone flange 5 and an outer cone surface 6. The copper conductive piece at the switch connection end is provided with a conductive connection sink hole 9, and is connected with the switch copper conductive piece through the spring contact finger. The bushing live sensor 8 is located in the insulating layer 4 between the conductive copper piece and the cable end flange 3, covering the interface between the cable sealing cone 2 and the cable end flange 3, and uniforming the electric field between the cable and the cable end flange transition surface . There are two symmetrically distributed b...

Embodiment 2

[0017] The solid insulating material is epoxy resin. The charged sensor is made of 0.5 mm thick stainless steel mesh.

[0018] All the other are with embodiment 1.

Embodiment 3

[0020] The solid insulating material is EPDM rubber. The charged sensor is made of carbon fiber through mold processing.

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Abstract

The invention relates to the field of high-voltage electrical equipment, in particular to a railway switch high-voltage casing pipe. The railway switch high-voltage casing pipe comprises a cable connecting end, a switch connecting end, a conductive copper part, an insulation layer, a semi-conductive buffer layer and a semi-conductive shielding layer, the cable connecting end is provided with a cable sealing conical face and a cable end flange, and the switch connecting end is provided with an outer conical flange and an outer conical face. The copper conductive part at the switch connecting end is provided with a conductive connecting countersink, and the conductive connecting countersink is connected with the switch copper conductive part through a spring button contact. The semi-conductive buffer layer is arranged on the outer surface of the conductive copper part between a casing pipe charged sensor and an outer cone charged sensor. The semi-conductive shielding layer is cured at the non-connection part of the surface of a solid insulating material and connected with a shell. According to the railway switch high-voltage casing pipe, the bus staggered connection problem is solved; and the partial discharge capacity of a product is decreased, the service life of the product is prolonged, and reliability is improved.

Description

technical field [0001] The invention relates to the field of high-voltage electrical equipment, in particular to a high-voltage bushing for a railway switch. Background technique [0002] With the continuous development of China's economy, railway transportation is playing an increasingly active role in the important means of transportation in China. China's railway construction will enter a golden period, and high-speed rail and bullet trains have become the main means of transportation for travel. The safety and reliability of traction substations that provide power for electrified locomotives are also becoming more and more important. With the advent of the high-speed rail era, they are facing increasingly strong market demand. Railway traction power supply lines implement segmental power supply. When locomotives pass by, the current of this section of the line is relatively large (for example, the current required by the Fuxing bullet train reaches 1000A); when the locom...

Claims

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Application Information

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IPC IPC(8): H01R11/01H01R11/03
Inventor 侯峰茅传强詹永钦
Owner BEIHAI GALAXY SWITCH DEVICES