CN218676726U

CN218676726U - Low-voltage large-current transformer

Info

Publication number: CN218676726U
Application number: CN202223162970.0U
Authority: CN
Inventors: 卢颖; 杨梓琳; 彭思阳; 帅鹏君; 卢登云; 曾炳尧
Original assignee: Meishan Shengtai Electric Co ltd
Current assignee: Meishan Shengtai Electric Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-03-21
Anticipated expiration: 2032-11-28

Abstract

The utility model provides a low-voltage heavy current transformer, it can give up big copper bar coiling mode, improves secondary winding for the coiling structure can conveniently process and assemble, and can practice thrift the cost, and the transformer still includes: the transformer comprises a multi-stage winding, an insulator string group, a leading-out copper bar, a serial copper bar and a neutral point copper bar, wherein the multi-stage winding is coated on the outer wall of each transformer body, is positioned at the upper, middle and lower parts of the transformer body and is respectively a first winding, a second winding and a third winding; each winding is in a square 6 shape with an unsealed frame; the two ends of the insulator string group are respectively connected with the inner wall of the first transverse copper bar and the outer wall of the second transverse copper bar; the leading-out copper bar is in a corner plate shape, and the vertical section of the leading-out copper bar is connected to the inner wall of the second transverse copper bar; the two ends of the serial copper bar are respectively connected with the outer walls of the first transverse copper bars of the second winding and the third winding; the neutral point copper bar is connected with the outer walls of the first transverse copper bars of the third windings of the transformer bodies.

Description

Low-voltage large-current transformer

Technical Field

The utility model relates to a transformer field particularly, relates to a low-voltage heavy current transformer.

Background

In the prior art, the secondary output of the low-voltage high-current transformer has very large current and correspondingly very large sectional area of the winding electromagnetic wire, which causes certain difficulty for winding the coil of the transformer. The main current solution is to use large copper bars for winding, but the large copper bars used are bulky and high in cost, and are inconvenient for the integral processing of the transformer and the winding of coils.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low-voltage heavy current transformer, it can give up big copper bar coiling mode, improves secondary for the coiling structure can conveniently process and assemble, and can practice thrift the cost.

The embodiment of the utility model is realized like this:

a low-voltage large-current transformer includes a plurality of transformer bodies, and upper and lower supporting members provided at the top and bottom of the transformer bodies, the transformer further including: the transformer comprises a multi-stage winding, an insulator string group, a leading-out copper bar, a serial copper bar and a neutral point copper bar, wherein the multi-stage winding is coated on the outer wall of each transformer body, is positioned at the upper, middle and lower parts of the transformer body and is respectively a first winding, a second winding and a third winding; each winding is in a square 6 shape with an unsealed frame and comprises a first transverse copper bar, a second transverse copper bar, a third transverse copper bar, a first vertical copper bar and a second vertical copper bar, wherein the first transverse copper bar, the second transverse copper bar and the third transverse copper bar are sequentially arranged from outside to inside;

the insulator string group is respectively arranged at the first winding, the second winding and the third winding, and two ends of the insulator string group are respectively connected with the inner wall of the first transverse copper bar and the outer wall of the second transverse copper bar;

the leading-out copper bar is in a corner plate shape, the leading-out copper bar is arranged at the first winding, and the vertical section of the leading-out copper bar is connected to the inner wall of the second transverse copper bar;

the two ends of one serial copper bar are respectively connected with the second winding and the outer wall of the first transverse copper bar of the first winding; two ends of one serial copper bar are respectively connected with the inner wall of a second transverse copper bar of the second winding and the inner wall of a second transverse copper bar of the third winding;

the neutral point copper bar is connected with the outer walls of the first transverse copper bars of the third windings of the transformer bodies.

In a preferred embodiment of the present invention, the second winding and the first winding are disposed in opposite directions.

In a preferred embodiment of the present invention, the insulator string set is composed of two vertically arranged insulators.

The embodiment of the utility model provides a beneficial effect is: the utility model provides a low-voltage heavy current transformer improves the winding structure, decomposes into the multi-stage winding with the winding structure and adds many types of copper bar and connect for low-voltage heavy current transformer's processing and assembly are all very convenient, but also can save secondary winding's tail copper bar, can reduce overall cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic view of a three-dimensional structure of a low-voltage large-current transformer according to an embodiment of the present invention;

fig. 2 is a schematic side view of a low-voltage high-current transformer according to an embodiment of the present invention;

fig. 3 is a schematic front structural diagram of a low-voltage large-current transformer according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a multi-stage winding according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a low-voltage high-current transformer according to an embodiment of the present invention.

Icon: the transformer comprises a transformer body 110, an upper support 120, a lower support 130, a multistage winding 140, an insulator string group 150, a leading-out copper bar 160, a serial copper bar 170, a neutral point copper bar 180, a first winding 141, a second winding 142, a third winding 143, a first transverse copper bar 144, a second transverse copper bar 145, a third transverse copper bar 146, a first vertical copper bar 147 and a second vertical copper bar 148.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

First embodiment

Referring to fig. 1 to 5, the present embodiment provides a low-voltage high-current transformer, which includes a plurality of transformer bodies 110, and an upper support 120 and a lower support 130 disposed at the top and the bottom of the transformer bodies 110, and the transformer further includes: the multi-stage winding 140, the insulator string group 150, the leading-out copper bar 160, the series copper bar 170 and the neutral point copper bar 180.

The multi-stage winding 140 is wrapped on the outer wall of each transformer body 110, and is located at three positions, namely, the upper, middle and lower positions of the transformer body 110, namely, a first winding 141, a second winding 142 and a third winding 143. Each winding is in a shape of 6 with an unsealed square frame, and specifically, referring to fig. 4, the winding comprises a first transverse copper bar 144, a second transverse copper bar 145 and a third transverse copper bar 146 which are sequentially arranged from outside to inside, a first vertical copper bar 147 connecting the first transverse copper bar 144 and the third transverse copper bar 146, and a second vertical copper bar 148 connecting the second transverse copper bar 145 and the third transverse copper bar 146. Wherein, the second winding 142 and the first winding 141 are arranged in opposite directions.

The insulator string group 150 is respectively arranged at the first winding 141, the second winding 142 and the third winding 143, and two ends of the insulator string group are respectively connected with the inner wall of the first transverse copper bar 144 and the outer wall of the second transverse copper bar 145.

The leading-out copper bar 160 is in a corner plate shape, the leading-out copper bar 160 is arranged at the first winding 141, and the vertical section of the leading-out copper bar 160 is connected to the inner wall of the second transverse copper bar 145.

The serial copper bars 170 are plate-shaped, and two ends of one serial copper bar 170 are respectively connected with the inner walls of the second transverse copper bars 144 of the second windings 142 and the third windings 143; two ends of one serial copper bar 170 are respectively connected with the outer walls of the first transverse copper bars of the first winding 141 and the second winding 142.

The neutral copper bar 180 connects the outer walls of the first transverse copper bars 144 of the third windings 143 of the plurality of transformer bodies 110.

A connecting copper bar is further arranged between the first transverse copper bar 144 and the second transverse copper bar 145 of the second winding 142.

In this embodiment, the copper bars of various types, the insulators and the multi-stage windings are connected by bolts.

To sum up, the utility model provides a low-voltage heavy current transformer improves the winding structure, decomposes into the multi-stage winding with the winding structure and adds many types of copper bar and connect for low-voltage heavy current transformer's processing and assembly are all very convenient, but also can save secondary winding's tail copper bar, can reduce overall cost.

This description describes examples of embodiments of the invention, and is not intended to illustrate and describe all possible forms of the invention. It should be understood that the embodiments described in this specification can be implemented in many alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Specific structural and functional details disclosed are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. It will be appreciated by persons skilled in the art that a plurality of features illustrated and described with reference to any one of the figures may be combined with features illustrated in one or more other figures to form embodiments which are not explicitly illustrated or described. The described combination of features provides a representative embodiment for a typical application. However, various combinations and modifications of the features consistent with the teachings of the present invention may be used as desired for particular applications or implementations.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-voltage large-current transformer, comprising a plurality of transformer bodies, and upper and lower supporting members provided at the top and bottom of the transformer bodies, characterized in that the transformer further comprises:

the multi-stage windings are wrapped on the outer wall of each transformer body, are positioned at the upper, middle and lower parts of the transformer body and are respectively a first winding, a second winding and a third winding; each winding is in a square 6 shape with an unsealed frame and comprises a first transverse copper bar, a second transverse copper bar, a third transverse copper bar, a first vertical copper bar and a second vertical copper bar, wherein the first transverse copper bar, the second transverse copper bar and the third transverse copper bar are sequentially arranged from outside to inside;

the two ends of one of the series copper bars are respectively connected with the second winding and the outer wall of the first transverse copper bar of the first winding; two ends of one of the series copper bars are respectively connected with the inner wall of a second transverse copper bar of the second winding and the inner wall of a second transverse copper bar of the third winding;

and the neutral point copper bar is connected with the outer walls of the first transverse copper bars of the third windings of the transformer bodies.

2. The low voltage high current transformer of claim 1, wherein the second winding and the first winding are arranged in opposite directions.

3. A low voltage high current transformer according to claim 1, wherein said insulator string is composed of two vertically arranged insulators.