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Dry type transformer and cushion block compressing structure thereof

A dry-type transformer and compression structure technology, applied in the direction of transformer/inductor parts, transformer/inductor coil/winding/connection, electrical components, etc., can solve problems such as disc spring dislocation, avoid lateral dislocation, ensure Squeeze effect, lateral squat reduction effect

Active Publication Date: 2017-01-04
STATE GRID CORP OF CHINA +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a pad pressing structure to solve the problem that disc springs in the prior art are prone to excessive lateral displacement and cause misalignment; dry type transformer

Method used

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  • Dry type transformer and cushion block compressing structure thereof
  • Dry type transformer and cushion block compressing structure thereof
  • Dry type transformer and cushion block compressing structure thereof

Examples

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Embodiment Construction

[0027] An example of a dry-type transformer is Figure 1~Figure 5 As shown, it includes the iron core 8 and the low-voltage winding 5 and the high-voltage winding 4 arranged in turn on the periphery of the iron core 8. The part of the iron core 8 higher than the low-voltage winding 5 and the high-voltage winding 4 is fixed with an upper clamp 7, and the upper clamp A fixing nut 6 is fixed on the side of 7, specifically, the fixing nut 6 is a hexagonal nut, and one side of the hexagonal surface of the hexagonal nut is welded and fixed to the upper clamping member 7.

[0028] Above the low-voltage winding 5 and the high-voltage winding 4, a pad pressing structure is provided, and the pad pressing structure includes elastic nails 1, pads 2 and insulating silicone pads 3 arranged in sequence along the up and down direction, wherein the elastic pressing The nail 1 includes a compression bolt 11 , a guide sleeve 14 sleeved on the compression bolt 11 , a disc spring set 13 sleeved ou...

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Abstract

The invention provides a dry type transformer and a cushion block compressing structure thereof. The cushion block compressing structure comprises a compressing bolt and a cushion block which are arranged along the up and down direction; a groove, into which a bolt head of the compressing bolt can be embedded, is arranged on the cushion block; a disc spring set sleeves the compressing bolt; the bottom disc spring in the disc spring set is in pressing fit with the cushion block; a compressing nut is screwed above the disc spring set on the compressing bolt; the top disc spring in the disc spring set is in pressing fit with the compressing nut; a guiding sleeve is sleeved in an inner hole of the disc spring set on the compressing bolt. The cushion block compressing structure has the beneficial effects that the existence of the guiding sleeve can reduce a clearance between the compressing bolt and the inner hole of the disc spring set; when the transformer is greatly vibrated in the transporting and running processes, the horizontal vibration of the disc springs in the disc spring set can be obviously reduced, so that the horizontal dislocation of the disc springs can be avoided; the use effect of the disc springs can be guaranteed; the compressing effect of the cushion block compressing structure and the normal safe use of the transformer can be lastly guaranteed.

Description

technical field [0001] The invention relates to a dry-type transformer and its block pressing structure. Background technique [0002] The block compression structure for dry-type transformers is a key structure used to support and compress the high and low voltage windings of the transformer. Usually, it adopts the combination of nails, disc springs and spacers. The authorized announcement number is CN201788796U, and the authorized announcement date is The Chinese utility model patent of 2011.04.06 discloses a three-phase five-column dry-type transformer, including upper and lower clamps, elastic pressure nails are installed on the outer edges of the upper and lower clamps, and the upper and lower ends of the high-voltage winding and low-voltage winding , and the lower ends are equipped with resin pads, the elastic nails press and fix the resin pads and the high and low voltage windings, and the joints of the elastic nails and the resin pads are provided with disc springs, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/30
CPCH01F27/306
Inventor 田程涛陈新谷文天陈智马光杨富尧郗亮陈永杰周永亮张勇强阮夫明
Owner STATE GRID CORP OF CHINA
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