External column type voltage limiter for urban rail catenary

A technology for urban rail and catenary, applied in the field of external post-type voltage limiters for urban rail catenary, can solve the problems of irregular shape of insulators, low reliability of lightning arresters, large installation limitations, etc., and achieve simplified installation steps, Prevent aging damage and reduce circuit cost

Inactive Publication Date: 2014-01-01
SHANDONG XUNSHI ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shape and size of the wrist-arm insulators on urban rail lines are not consistent, and some insulators are even irregular in shape, and the installation is very limited. Therefore, the lightning arresters installed with the wrist-arm insulators have low reliability, complicated installation, small scope of application, and high cost. ; and although the gapless arrester can be installed and used far away from the insulator, it is prone to accelerated aging and damage due to long-term continuous system voltage, and accidents and losses will occur if there is no accurate maintenance

Method used

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  • External column type voltage limiter for urban rail catenary
  • External column type voltage limiter for urban rail catenary

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing:

[0017] Such as figure 1 The external post-type voltage limiter for the urban rail catenary shown includes the cross arm 5 of the pole tower, and also includes the arrester body 1 and the post insulator 2. The arrester body 1 is equipped with a spherical electrode, the arrester body 1 and the post insulator 2. It is connected by conductive metal row 3; an arc strike plate 4 is also installed between the tower cross arm 5 and the post insulator 2, and the arc strike plate 4 is closely electrically connected with the tower cross arm 5; the arrester body 1 is connected to the The upper fittings 6 of the post insulator 2 are tightly electrically connected; an air gap 10 is formed between the arc strike plate 4 and the spherical electrode

[0018] The conductive metal row 3 is formed by bending a complete copper plate, and has an integrated structure, and is connected and fixed ...

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Abstract

The invention relates to an external column type voltage limiter for an urban rail catenary. The external column type voltage limiter comprises a cross arm of a tower and further comprises a lightning arrester body and a post insulator. A spherical electrode is installed on the lightning arrester body, the lightning arrester body is connected with the post insulator through a conductive metal bar, a run-on plate is further installed between the tower cross arm and the post insulator and is in tight electric connection with the tower cross arm, the lightning arrester body is in tight electric connection with a fitting positioned on the post insulator, and an air gap is formed between the run-on plate and the spherical electrode. The external column type voltage limiter can be installed away from the insulator and provide multiple protections for the insulator and is suitable for being used on an urban rail catenary system.

Description

technical field [0001] The invention relates to an external post-type pressure limiter for urban rail catenary. Background technique [0002] With the rapid development of urban rail transit, the lines are becoming more and more dense, and the elevated lines are gradually increasing. The traction power supply system is an important system in rail transit engineering, and its function is to provide reliable power supply to vehicles. The equipment insulation level of the traction power supply system is very low, and it is difficult to resist lightning overvoltage. Many lightning disasters have occurred in many projects put into operation, causing damage to catenary insulators or traction substation equipment, and even affecting driving. On the elevated lines of urban rail transit, the number of lightning disasters in the traction power supply system is more, and the loss is greater. [0003] At present, most of the urban rail projects that have been put into operation in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T4/10H01C7/12
Inventor 尹彬
Owner SHANDONG XUNSHI ELECTRIC
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