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Epoxy resin pouring shielding cylinder of transformer

A technology of epoxy resin and shielding cylinder, which is applied in the direction of preventing/reducing unnecessary electric/magnetic influences, and can solve problems such as difficult process guarantee, potential safety hazards of transformer operation, and difficult operation, so as to improve the insulation withstand voltage level, Easy operation and assembly, reliable effect of ground shielding

Inactive Publication Date: 2011-03-30
天津市特变电工变压器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to wind the ground shield on the core and the coil, and the process is difficult to guarantee, which poses a safety hazard to the operation of the transformer

Method used

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  • Epoxy resin pouring shielding cylinder of transformer
  • Epoxy resin pouring shielding cylinder of transformer
  • Epoxy resin pouring shielding cylinder of transformer

Examples

Experimental program
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Effect test

Embodiment

[0026] Refer to attached figure 1 , figure 2 and image 3 .

[0027] A transformer epoxy resin casting shielding cylinder is a casting shielding cylinder structure, and the casting shielding cylinder structure is a casting shielding inner insulation 1, a grounding shielding 2 and a casting shielding outer insulation 3 in sequence from the inside to the outside. The grounding shield 2 in the shielding cylinder is two semi-open copper foils 6 with winding structure. The lead-out metal strips 4 are welded on the copper foils 6. The openings 5 ​​of the metal foils are 5mm, and the opening interval of the metal foils 6 is 70mm.

[0028] Concrete structure of the present embodiment and processing procedure thereof:

[0029] According to the design requirements and external dimensions of the transformer, the cast shielding tube mold and the grounding shielding copper foil 2 are made. The ground shield is welded by copper foil 6 and lead-out metal strip 4 . Wherein the copper fo...

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PUM

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Abstract

The invention relates to an epoxy resin pouring shielding cylinder of a transformer, belonging to the technical field of dry type transformers. The epoxy resin pouring shielding cylinder of the transformer is characterized by adopting a structure in the shape of a pouring shielding cylinder; and grounded shields inside the shielding cylinder are a plurality of open type metal straps in winding structures. The invention has the advantages of simple structure, reliable property, high insulating withstand voltage, reduced eddy-current loss, good heat-radiating effect, convenience in operation and assembly, manufacturing cost saving, reliable grounded shielding, safety operation of the transformer, and the like.

Description

technical field [0001] The invention belongs to the technical field of dry-type transformers, in particular to an epoxy resin casting shielding cylinder for transformers. Background technique [0002] At present, the grounding shield of existing dry-type transformers is wound around the iron core or coil with a metal foil material as high as the coil reactance height, which reduces the insulation withstand voltage level and heat dissipation performance of the dry-type transformer. It is difficult to wind the ground shield on the core and the coil, and the process is difficult to guarantee, which poses a safety hazard to the operation of the transformer. Contents of the invention [0003] In order to solve the problems existing in the prior art, the invention provides a transformer epoxy resin casting shielding cylinder. [0004] The object of the present invention is to provide a transformer epoxy with simple structure, reliable performance, high insulation withstand volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/36
Inventor 陈杰王闯李鹏张建永金兴邵巍玮秦晋
Owner 天津市特变电工变压器有限公司
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