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800kv casing with top ring shielding structure

A technology of shielding structure and top ring, which is applied to insulators, electrical components, insulators, etc., can solve the problems of difficult assembly, too many shielding parts, high cost, improve the insulation distance of bushings, and facilitate manufacturing and installation. Production cost reduction effect

Inactive Publication Date: 2017-09-15
SHANGHAI ZONFAEP SUPER PRESSURE ELECTRIC APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of existing 800kV bushings with too many shielding parts, complex structure, high process requirements, difficult assembly, high cost and poor economy

Method used

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  • 800kv casing with top ring shielding structure
  • 800kv casing with top ring shielding structure

Examples

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Embodiment

[0018] Such as figure 1 As shown, an 800kV bushing with a top ring shielding structure provided in this embodiment includes a conductive tube 30 arranged in a hollow composite insulating cylinder 50, and the surface of the part where the two ends of the conductive tube 30 are in contact with other components Silver-plated, this structure can greatly reduce the current skin effect and contact resistance, and significantly improve the overall flow capacity of the bushing. The top of the conductive pipe 30 is fixed on the metal end cover at the top of the hollow composite insulating cylinder 50 by bolts, and the top of the hollow composite insulating cylinder 50 is provided with a pressure equalizing ring 10, and the pressure equalizing ring 10 and the terminal block 20 are also connected to the hollow composite insulating cylinder by bolts. 50 on the top of the metal end cap; the bottom of the hollow composite insulating cylinder 50 is fastened to the transition shell 60 by bolt...

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Abstract

The invention discloses an 800kV bushing with a top ring shielding structure, which is characterized in that it includes a conductive pipe arranged in a hollow composite insulating cylinder, the top of the conductive pipe is connected to a wiring board; the hollow composite insulating cylinder is provided with a top ring for grounding The shielding case includes a main body of the shielding case. The top of the main body of the shielding case is connected to a plurality of overlapping top rings through a plurality of support rods, and the conductive pipe is passed through the top rings. The present invention adds a top ring on the top of the main body of the shielding cover, which significantly improves the problem that the inner wall and outer wall potential lines of the sleeve hollow composite insulating cylinder corresponding to the upper end of the grounding shielding cover with the top ring are too dense, optimizes and reduces the electric field strength value at this place, and the potential The whole line is moved to the upper part of the bushing to make full use of the insulation distance of the bushing and improve the overall insulation performance of the bushing. At the same time, the structure of the bushing is simple, and the manufacture and installation are convenient and fast while ensuring that the insulation performance is basically the same. , The production cost is significantly reduced.

Description

technical field [0001] The invention relates to an 800kV bushing with a top ring shielding structure used in AC high-voltage switchgear, and belongs to the technical field of electric equipment. Background technique [0002] Patent No. CN 202550379 "Single shielding cover for 550kV bushing" introduces a single shielding cover for 550kV bushing, including a cylindrical shielding cover, which is characterized in that the shielding cover is composed of an upper cover body and a lower cover body. The body diameters are the same and coaxial. The insulation performance of the single shield structure used on the 550kV voltage level bushing can meet the technical requirements, but if the single shield structure is used on the 800kV voltage level bushing, there will be a hollow hole corresponding to the upper end of the single shield The potential lines of the inner wall and outer wall of the composite insulation cylinder are too concentrated and the electric field strength value is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/58H01B17/42
CPCH01B17/583H01B17/42
Inventor 杨震殷福煜汤伟李传阳
Owner SHANGHAI ZONFAEP SUPER PRESSURE ELECTRIC APPLIANCE
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