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A New Transformer Insulation Structure

An insulation structure and transformer technology, applied in the direction of transformer/inductor coil/winding/connection, etc., can solve the problems of large insulation distance and unsatisfactory electric field distribution at the coil end, achieve volume reduction, improve market competitiveness, and improve the competitiveness of the market. The effect of reducing material costs

Active Publication Date: 2017-01-04
SANBIAN SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This capacity section includes two types of insulation structures, the first type is an insulation structure with a capacity of 10000kVA ~ 40000kVA, and the second type is an insulation structure with a capacity of 8000kVA and below. The insulation distance of these two structures is too large, and the electric field distribution at the end of the coil is not ideal.

Method used

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  • A New Transformer Insulation Structure
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  • A New Transformer Insulation Structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the novel transformer insulation structure is an insulation structure with a capacity of 10000kVA to 40000kVA, and it also includes a nail support plate on the clip, a nail, a nail seat, a lock nut, a pressure plate, and a supporting plate. The pressure plate cover is set on The upper part of the upper iron yoke is insulated, the support plate cover is arranged on the lower part of the lower iron yoke insulation, the pressing nail seat is located on the upper part of the pressing plate, and there is a groove for accommodating the pressing nail, and the pressing nail is provided with As for the lock nut, the upper part of the lock nut is provided with the clamp upper nail supporting plate, which is used to compress the entire insulating structure.

[0033] Furthermore, the insulation distance between the lower end surface of the pressing plate and the upper end surface of the low-voltage coil is 40 mm, which is 20 mm shorter than the existing i...

Embodiment 2

[0036] Such as figure 2 As shown, the new transformer insulation structure is an insulation structure with a capacity of 8000kVA and below, and it also includes an upper iron yoke and a lower iron yoke. The cover is provided on the lower part of the lower iron yoke insulation.

[0037] Further, the insulation distance between the lower end surface of the upper iron yoke and the upper end surface of the low-voltage coil is 45mm, which is 20mm shorter than the existing insulation distance. The insulation distance between them is 45mm, which is 20mm shorter than the existing insulation distance, and the insulation distance between the outer surface of the low-voltage coil and the inner surface of the high-voltage coil is 18mm, which is 7mm shorter than the existing insulation distance.

[0038]The formation process of the insulating structure is as follows: the high and low voltage coils are firstly wound on the winding machine respectively. First place the iron yoke insulatio...

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Abstract

The invention relates to a novel transformer coil insulation structure which comprises an iron core post, an upper iron yoke insulator, an upper iron yoke partition, a lower iron yoke partition, an upper high-voltage coil end insulator, a lower high-voltage coil end insulator, an upper low-voltage coil end insulator, a lower low-voltage coil end insulator, a phase partition, a supporting plate, an insulating cylinder, a high and low voltage coil-to-coil paperboard, a brace, a low-voltage coil, a high-voltage coil, an upper formed sectioning angle ring and a lower formed sectioning angle ring. The low-voltage coil is sleeved outside the iron core post, and the high-voltage coil is sleeved outside the low-voltage coil. A main insulation distance inside a transformer is narrowed, the size and the cost of the transformer are reduced, and market competitiveness is improved.

Description

technical field [0001] The invention relates to an insulation structure of a transformer coil. Background technique [0002] At present, the transformer capacity is 40000kVA and below, and the voltage combination is high voltage 35kV / low voltage 10kV or high voltage 35 / low voltage 6.3kV product segment. The insulation distance between the high and low voltage coils of the transformer and the insulation distance between the upper and lower ends of the coil to the upper and lower iron yokes and other issues. The capacity section includes two types of insulation structures, the first type is an insulation structure with a capacity of 10000kVA ~ 40000kVA, and the second type is an insulation structure with a capacity of 8000kVA and below. The insulation distance of these two structures is too large, and the electric field distribution at the end of the coil is not ideal. . Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/32H01F27/30
Inventor 陈世省
Owner SANBIAN SCI TECH