CN207587500U - A kind of transformer body insulating compressing structure - Google Patents

Abstract

The utility model relates to an insulating and compacting structure of a transformer body. An insulation compression structure for a transformer body, comprising a fixed plate, a fixed plate, a magnetic shield of a lung lobe, a cardboard, an insulating iron yoke pad, an insulating plate, an iron yoke pad, and an end pressure plate; Above the plate, the insulating iron yoke block is pressed under the fixed plate, and the magnetic shielding of the lung lobe is set in the groove on the upper surface of the insulating iron yoke block; the magnetic shielding of the lung lobe is divided into two pieces, separated by cardboard in the middle; The part pressing plate is arranged under the insulating iron yoke pad; an insulating plate and an iron yoke pad are also arranged between the end pressing plate and the insulating iron yoke pad. The insulation compression structure of the transformer body of the utility model replaces the compression structure of the pressure nails with the insulation parts to reduce the eddy current loss at the end of the iron core and improve the safety factor; the connecting holes on both sides of the insulating iron yoke pad block are changed to The threaded hole can effectively avoid the bursting phenomenon caused by the jacking up of the pressing bag during the pressing process of the leaking parts on both sides of the insulating iron yoke pad.

Description

A transformer body insulation compression structure

technical field

The utility model relates to the field of transformer manufacturing, in particular to an insulating and compacting structure of a transformer body.

Background technique

The insulation and compression structure of the transformer body, especially for large transformers, is traditionally used more often with the nail structure, and the more metal parts in the nail structure are likely to increase the eddy current loss at the end of the core, which not only increases the cost but also poses a safety hazard.

Utility model content

In order to solve the above technical problems, the utility model provides a transformer body insulation compression structure, which replaces the compression nail compression structure with insulating parts, reduces the eddy current loss at the end of the iron core, and improves the safety factor of the product; the insulation The connecting holes on both sides of the iron yoke block are changed to threaded holes, which can effectively avoid the bursting phenomenon caused by the pressure bag jacking up of the leaking parts on both sides of the insulating iron yoke block during the compaction process.

The technical scheme adopted by the utility model to solve the technical problem is: a transformer body insulation compaction structure, which includes a fixed plate limb plate, a fixed plate, a magnetic shield of the lung lobe, a cardboard, an insulating iron yoke pad, an insulating plate, an iron Yoke spacer and end pressure plate; the fixed plate limb plate is arranged above the fixed plate, the insulating iron yoke spacer is pressed under the fixed plate, and the magnetic shielding of the lung lobe is arranged in the groove opened on the upper surface of the insulating iron yoke spacer The magnetic shielding of the lung lobe is divided into upper and lower parts, which are separated by cardboard in the middle; the end pressing plate is arranged under the insulating iron yoke pad; Insulation plates and iron yoke spacers.

The end pressure plate is connected with the upper end coil of the transformer coil.

The insulating plate and the iron yoke pad are tightly attached between the insulating iron yoke pad and the end pressure plate, and the upper part of the end pressure plate is provided with an arc-shaped groove matching the iron yoke pad, which is used for pressing the transformer. When tightening, drive the iron yoke pads in order to compress the structure.

The insulating plate and the iron yoke block are respectively provided with threaded holes, and the threaded holes of the insulating plate and the iron yoke block are threadedly connected with an insulating screw; the upper and lower sides of the insulating screw respectively connect the insulating plate and the The iron yoke block is tightened and fixed.

The connecting holes on both sides of the insulating iron yoke block are threaded holes, and the remaining connecting holes in the middle part are made light holes.

Beneficial effects of the utility model: The utility model provides a transformer body insulation compression structure, which replaces the compression nail compression structure with insulating parts, reduces the eddy current loss at the end of the iron core, and improves the safety factor of the product; the insulation The connecting holes on both sides of the iron yoke block are changed to threaded holes, which can effectively avoid the bursting phenomenon caused by the pressure bag jacking up of the leaking parts on both sides of the insulating iron yoke block during the compaction process.

Description of drawings

Fig. 1 is a schematic diagram of an insulation compression structure of a transformer body in an embodiment.

Detailed ways

In order to deepen the understanding of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, which are only used to explain the utility model, and do not limit the protection scope of the utility model.

Example

As shown in Figure 1, this embodiment provides a transformer body insulation compression structure, which includes a fixed plate limb plate 1, a fixed plate 2, a magnetic shield 3 for lung lobes, a cardboard 4, an insulating iron yoke pad 5, an insulating plate 6. Iron yoke pad 9, end pressure plate 10; the fixed plate limb plate 1 is set above the fixed plate 2, the insulating iron yoke pad 5 is pressed under the fixed plate 2, and the lung lobe magnetic shield 3 is set on the insulating iron In the groove opened on the upper surface of the yoke block 5; the magnetic shield 3 of the lung lobe is divided into two pieces, the upper and lower parts, which are separated by a cardboard 4 in the middle; the end pressure plate 10 is arranged under the insulating iron yoke block 5; An insulating plate 6 and an iron yoke pad 9 are also arranged between the end pressing plate 10 and the insulating iron yoke pad 5; the end pressing plate 10 is connected to the upper end ring of the transformer coil; the insulating plate 6 is connected to the iron yoke pad The block 9 is tightly attached between the insulating iron yoke pad 5 and the end pressure plate 10, and the upper part of the end pressure plate 10 is provided with an arc-shaped groove matching the iron yoke pad 9, which is used for compressing the transformer, Drive the iron yoke blocks 9 in order to compress the structure; the insulating plate 6 and the iron yoke block 9 are respectively provided with threaded holes, and the threaded holes of the insulating plate 6 and the iron yoke block 9 are threadedly connected with an insulating screw rod 8; the upper and lower sides of the insulating screw rod 8 respectively tighten and fix the insulating plate 6 and the iron yoke pad 9 through the insulating nut 7; the connecting holes on the two sides of the insulating iron yoke pad 5 are opened into threaded holes, The connecting holes in the rest of the middle part are opened into light holes.

The insulation compression structure of the transformer body in this embodiment uses insulating parts to replace the compression structure of the nails, which reduces the eddy current loss at the end of the iron core and improves the safety factor of the product; The connecting hole is changed into a threaded hole, which can effectively avoid the bursting phenomenon caused by the jacking up of the pressure bag during the pressing process of the leaking parts on both sides of the insulating iron yoke pad.

The above-mentioned embodiments shall not limit the present utility model in any way, and all technical solutions obtained by means of equivalent replacement or equivalent conversion fall within the protection scope of the present utility model.

Claims (5)

1. A transformer body insulation compaction structure, characterized in that: it includes a fixed plate limb plate, a fixed plate, a lung lobe magnetic shield, a cardboard, an insulating iron yoke pad, an insulating plate, an iron yoke pad, and an end pressing plate; The limb plate of the fixed plate is arranged above the fixed plate, the insulating iron yoke block is pressed under the fixed plate, and the magnetic shielding of the lung lobe is arranged in the groove opened on the upper surface of the insulating iron yoke block; the magnetic shield of the lung lobe is divided into The upper and lower pieces are separated by cardboard in the middle; the end pressure plate is arranged under the insulating iron yoke pad; an insulating plate and an iron yoke pad are also arranged between the end pressure plate and the insulating iron yoke pad. 2 . The insulating and compacting structure of a transformer body according to claim 1 , wherein the end pressure plate is connected to the upper end coil of the transformer coil. 3 . 3. A transformer body insulation compression structure according to claim 1, characterized in that: the insulating plate and the iron yoke block are closely attached between the insulating iron yoke block and the end pressure plate, and the end The upper part of the pressure plate is provided with arc-shaped grooves matching the iron yoke pads, which are used to drive the iron yoke pads in order to compact the structure when the transformer is compacted. 4. The insulating and compacting structure of a transformer body according to claim 1, characterized in that: the insulating plate and the iron yoke block are respectively provided with threaded holes, and the threads of the insulating plate and the iron yoke block are The hole is threadedly connected with an insulating screw; the upper and lower sides of the insulating screw respectively tighten and fix the insulating plate and the iron yoke pad through insulating nuts. 5. The transformer body insulation compaction structure according to claim 4, characterized in that: the connecting holes on both sides of the insulating iron yoke block are threaded holes, and the remaining connecting holes in the middle part are made light holes.