CN219085782U

CN219085782U - Low-voltage lead structure of dry-type transformer

Info

Publication number: CN219085782U
Application number: CN202223575083.6U
Authority: CN
Inventors: 杨文娟; 冯佳儒; 费东伟; 徐超
Original assignee: Changzhou Pacific Transformer Co ltd; Changzhou Pacific Electric Power Equipment Group Co ltd
Current assignee: Changzhou Pacific Transformer Co ltd; Changzhou Pacific Electric Power Equipment Group Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-26
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a low-voltage lead structure of a dry-type transformer, which comprises three low-voltage coils and clamping pieces, wherein the clamping pieces are positioned above the low-voltage coils, and the low-voltage coils are connected with a head-end copper bar and a tail-end copper bar, and the low-voltage lead structure is characterized in that: the utility model relates to a transformer, which comprises a clamping piece, wherein a first insulator is connected in the clamping piece, the other end of the first insulator is connected with a zero line bar, the zero line bar is positioned on the outer side of the clamping piece, the zero line bar is connected with a tail end copper bar through a fastener, a second insulator is connected between a head end copper bar and the tail end copper bar, the first insulator and the second insulator are distributed in a left-right dislocation way, and the top surfaces of the head end copper bar and the tail end copper bar are at the same height.

Description

Low-voltage lead structure of dry-type transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a low-voltage lead structure of a dry-type transformer.

Background

At present, as shown in fig. 1 and 2, two insulators are generally installed on the conventional planar dry-type distribution transformer low-voltage outgoing copper bars in the market, and in order to prevent the two insulators from interfering with each other during installation, the two insulators are staggered up and down, so that the copper bars are required to be heightened, and the space on the copper bars can meet the requirement of the up-down staggered installation of the two insulators.

The wire outlet structure increases the longitudinal overall dimension of the transformer to a certain extent, increases the consumption of copper bars and increases the product cost. In some specific occasions, such as subways, photovoltaic power stations and other places, stricter requirements are made on the appearance of the transformer, and the structure is required to be more compact, so that the low-voltage lead structure of the dry-type transformer is designed to meet the requirements of the occasions on transformer products.

Disclosure of Invention

The utility model aims to provide a low-voltage lead structure of a dry-type transformer, which is characterized in that the existing first insulator and the second insulator which are distributed in a staggered manner up and down are changed into the left-right staggered manner, so that copper bars are not required to be heightened, the heights of the copper bars at the head end and the tail end are reduced, the position space of the transformer is reduced in the height direction, the volume of the transformer is reduced, the use amount of the copper bars is reduced, and the cost is reduced.

The utility model provides the following technical scheme: the utility model provides a dry-type transformer low voltage lead wire structure, includes three low voltage coil and folder, and the folder is located low voltage coil top, be connected with head end copper bar and terminal copper bar on the low voltage coil, its characterized in that: the novel copper wire clamp is characterized in that a first insulator is connected in the clamp, the other end of the first insulator is connected with a zero line row, the zero line row is located on the outer side of the clamp, the zero line row is connected with a tail end copper bar through a fastener, a second insulator is connected between a head end copper bar and the tail end copper bar, the first insulator and the second insulator are distributed in a left-right staggered mode, and the top surfaces of the head end copper bar and the tail end copper bar are at the same height.

Preferably, the zero line is a strip copper bar, and the three tail end copper bars are all connected to the zero line, so that the connection strength between the zero line and the clamping piece is enhanced by the strip copper bar.

In order to reduce the whole length of the zero line, the tail copper bars at the two ends are just positioned at the two ends of the zero line, and the outer end face of the tail copper bar at one end is flush with the end face of the zero line.

In order to reduce the height dimension of the copper bars, the head end copper bars are flush with the top surface of the tail end copper bars.

For the installation of convenient second insulator, prevent simultaneously that the fastener on second insulator and the terminal copper bar from interfering, the shape of first end copper bar is the same with terminal copper bar, the first end copper bar is bent by a monoblock copper bar twice and takes shape, is the zigzag, and the first end copper bar includes first hem, second hem and third hem, third hem downwardly extending to low voltage coil's bottom, with low voltage coil welding, the second hem of terminal copper bar is located the top of the second hem of first end copper bar, the first hem length of first end copper bar is greater than the first hem of terminal copper bar, the lower extreme at the first hem of first end copper bar is installed to the second insulator.

Compared with the prior art, the utility model has the following beneficial effects: the first insulator and the second insulator are distributed in a left-right staggered mode, the clamping piece is connected with the zero line bar through the first insulator, the first insulator is connected with the tail end copper bar through the second insulator, and compared with the existing insulators which are staggered up and down, the insulators which are distributed in a left-right staggered mode do not need to heighten the copper bars in order to ensure enough up-down distance, so that the heights of the first copper bar and the tail end copper bar are reduced, the longitudinal overall dimension of the copper bars is reduced, the volume of the transformer is further reduced, the consumption of the copper bars is reduced, and the cost is reduced.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of a prior art low voltage lead connection;

FIG. 2 is a schematic diagram of a conventional low voltage lead wire outlet copper bar;

FIG. 3 is a diagram of an insulator and copper bar connection arrangement of the present utility model;

FIG. 4 is a perspective view of the present utility model;

FIG. 5 is a schematic view of the structure of the head-to-tail copper bar of the present utility model;

in the figure: 1. a clamping piece; 2. a first insulator; 3. a zero line row; 4. a terminal copper bar; 5. a head copper bar; 51. a first hem; 52. a second flanging; 53. a third flanging; 6. and a second insulator.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 3 and 4, the present utility model provides the following technical solutions: the utility model provides a dry-type transformer low voltage lead wire structure, includes three low voltage coil and folder 1, and folder 1 is located low voltage coil top, is connected with head end copper bar 5 and terminal copper bar 4 on the low voltage coil, its characterized in that: the clamp 1 is internally connected with a first insulator 2, the other end of the first insulator 2 is connected with a zero line bar 3, the zero line bar 3 is positioned on the outer side of the clamp 1, the zero line bar 3 is connected with a tail end copper bar 4 through a fastener, a second insulator 6 is connected between a head end copper bar 5 and the tail end copper bar 4, the first insulator 2 and the second insulator 6 are distributed in a left-right staggered mode, the head end copper bar 5 and the top surface of the tail end copper bar 4 are at the same height, interference between the first insulator 2 and the second insulator 6 can be avoided, meanwhile, heightening arrangement is not needed for the head end copper bar 5 and the tail end copper bar 4, the size of a lead copper bar is effectively reduced, the use amount of the copper bar is reduced, the cost is reduced, meanwhile, the lead structure is more compact, and the use requirements of certain characteristic occasions are met.

The zero line row 3 is rectangular copper bar, and three terminal copper bars 4 are all connected on the zero line row 3, and both ends and centre all are connected with folder 1 about the rectangular copper bar, effectively improve the joint strength between zero line row 3 and the folder 1, have enlarged the mounted position of terminal copper bar 4 simultaneously.

The copper bars 4 at the tail ends are just positioned at the two ends of the zero line bar 3, the outer end face of the copper bar 4 at the tail end is flush with the end face of the zero line bar 3, the two ends of the zero line bar 3 are limited, the length size of the zero line bar 3 is reduced, and the cost is reduced.

The head end copper bar 5 is flush with the top surface of the tail end copper bar 4, so that the heights of the head end copper bar 5 and the tail end copper bar 4 are reduced, the overall dimension is reduced, the use amount of the copper bars is reduced, and the cost is reduced.

As shown in fig. 5, the shape of the head end copper bar 5 is the same as that of the tail end copper bar 4, the head end copper bar 5 is formed by bending a whole copper bar twice, the head end copper bar 5 is zigzag, the head end copper bar 5 comprises a first folded edge 51, a second folded edge 52 and a third folded edge 53, the third folded edge 53 extends downwards to the bottom end of the low-voltage coil and is welded with the low-voltage coil, the second folded edge of the tail end copper bar 4 is located above the second folded edge 52 of the head end copper bar 5, the length of the first folded edge 51 of the head end copper bar 5 is greater than that of the tail end copper bar 4, the top surfaces of the head end copper bar 5 and the tail end copper bar 4 are at the same height, the surface of the first folded edge 51 is also connected with a fastener, so that the second insulator 6 is installed at the lower end of the first folded edge 51 and is located below the fastener, interference with the fastener is avoided, meanwhile, the second insulator 6 is installed at the lower end of the first folded edge 51, the copper bar is not required to be heightened, the height of the tail end copper bar is reduced, and the cost is reduced.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a dry-type transformer low voltage lead wire structure, includes three low voltage coil and folder, and the folder is located low voltage coil top, be connected with head end copper bar and terminal copper bar on the low voltage coil, its characterized in that: the novel copper wire clamp is characterized in that a first insulator is connected in the clamp, the other end of the first insulator is connected with a zero line row, the zero line row is located on the outer side of the clamp, the zero line row is connected with a tail end copper bar through a fastener, a second insulator is connected between a head end copper bar and the tail end copper bar, the first insulator and the second insulator are distributed in a left-right staggered mode, and the top surfaces of the head end copper bar and the tail end copper bar are at the same height.

2. The dry-type transformer low voltage lead structure of claim 1, wherein: the zero line is a strip-shaped copper bar, and the three tail end copper bars are all connected to the zero line.

3. A dry-type transformer low voltage lead structure as claimed in claim 2, wherein: the two ends of the tail copper bar are just positioned at the two ends of the zero line bar, and the outer end face of the tail copper bar is flush with the end face of the zero line bar.

4. The dry-type transformer low voltage lead structure of claim 1, wherein: the head end copper bar is flush with the top surface of the tail end copper bar.

5. The dry-type transformer low voltage lead structure of claim 1, wherein: the shape of the first end copper bar is the same as that of the tail end copper bar, the first end copper bar is formed by bending a whole copper bar twice and is Z-shaped, the first end copper bar comprises a first folded edge, a second folded edge and a third folded edge, the third folded edge downwards extends to the bottom end of the low-voltage coil and is welded with the low-voltage coil, the second folded edge of the tail end copper bar is located above the second folded edge of the first end copper bar, the first folded edge length of the first end copper bar is greater than the first folded edge of the tail end copper bar, and the second insulator is arranged at the lower end of the first folded edge of the first end copper bar.