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Dry type capacitive short tail type GIS sleeve

A capacitive type, bushing technology, applied in the direction of electrical components, switchgear, switchgear settings, etc., to achieve the effect of light weight, short production cycle, and strong versatility

Inactive Publication Date: 2015-10-28
NANJING ELECTRIC HIGH VOLTAGE BUSHING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional dry high-voltage GIS bushing has serious material loss, long production cycle, general purpose, and extremely low versatility

Method used

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  • Dry type capacitive short tail type GIS sleeve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The dry capacitive short-tailed GIS bushing mainly consists of 1. Pressure equalizing sealing cover; 2. O-shaped sealing ring; 3. Shed structure; 4. Bushing core; 5. Capacitive screen; 6. Measurement terminal; 7. Casing flange; 8. Pressure equalizing ball; 9. Conductive rod. The laying of the capacitive screen is different from the traditional way, and it is arranged in an inverted way. The length below the flange is greatly reduced due to the use of an inverted capacitive screen. The whole structure has the advantages of reducing the weight of the casing, adapting to installation in a small space, saving production materials, short production cycle, strong versatility, and convenient installation. The φ70 aluminum guide rod is selected as the No. 0 electric screen. The conductive rod is polished, and 14 semiconductor electric screens are distributed outside. The insulation thickness between the electric screens is 2mm, the thickness of the semiconductor electric screen...

Embodiment 2

[0026] The main structure of this embodiment is consistent with that of Embodiment 1. The aluminum guide rod of φ70 is selected as the No. 0 electric screen. The conductive rod is polished, and 14 semiconductor electric screens are distributed outside. The thickness of the screen is 0.1mm, the total insulation thickness is 27.2mm, the thickness of the semiconductor electric screen is 0.1mm, the total insulation thickness is 27.2mm, the outer diameter of the core is φ135, the average field strength is 3.39kV / mm, and the maximum field strength is 5.63kV / mm, located where there is no screen.

[0027] The capacitive screen distribution starts from 1 pressure equalizing sealing cover, the first step difference is 200mm, the length of the rolled first screen is 590mm; the second step difference is 45mm, that is, on the basis of the first screen 590mm, from the head Then give up 45mm, roll the length of the second screen is 600mm, and so on, the capacitive screen is rolled down laye...

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Abstract

The present invention provides a dry type capacitive short tail type GIS sleeve aiming at the problems that a conventional dry type high voltage GIS sleeve is severe in material loss, long in production cycle and very low in universality and versatility. The dry type capacitive short tail type GIS sleeve of the present invention comprises a conductive rod, a sleeve core body arranged outside the conductive rod, a voltage-sharing sealing cover and a sleeve flange, and an umbrella skirt structure is arranged outside the sleeve core body. The dry type capacitive short tail type GIS sleeve is characterized in that a set of inverted capacitive screens are arranged inside the sleeve core body and are located between the voltage-sharing sealing cover and the sleeve flange, and the core body at the lower end of the flange is a 2 to 4-step stepped shape. The dry type capacitive short tail type GIS sleeve of the present invention enables the weight to be reduced, is suitable for the narrow space installation, saves the production materials, is short in production cycle and strong in versatility, and is convenient to install.

Description

Technical field: [0001] The invention relates to a dry capacitive short-tail GIS bushing, which belongs to the technical field of supporting equipment for electric bushings. Background technique: [0002] At present, the insulation structure at the tail of the bushing of the traditional dry high-voltage GIS (that is, gas-insulated metal-enclosed switchgear) increases the length of the oil or gas correspondingly in order to ensure the electrical performance of the core, which makes the length of the tail relatively large. At the same time It also causes a larger space for installing the GIS casing. Because the tail of the traditional dry high-voltage GIS bushing is long, the weight of the bushing increases accordingly, and the size of the matching metal shell needs to be increased to meet the weight of the supporting bushing and the installation space, and the metal shell must be compatible with the bushing. Tube matching. The traditional dry high-voltage GIS bushing has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B13/035
Inventor 孙闻峰蔡培荣辛万鹏孙永林
Owner NANJING ELECTRIC HIGH VOLTAGE BUSHING
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