CN218471733U

CN218471733U - High-voltage phase connecting line

Info

Publication number: CN218471733U
Application number: CN202222505401.5U
Authority: CN
Inventors: 缪红娣; 黄雪梅; 金承祥
Original assignee: Clp Jiangsu Transformer Manufacturing Co ltd
Current assignee: Clp Jiangsu Transformer Manufacturing Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-02-10
Anticipated expiration: 2032-09-22

Abstract

The high-voltage phase connecting wire is characterized in that phase connecting wires are arranged on the inlet end and the outlet end of a three-phase winding on a three-phase transformer, the phase connecting wires comprise a similar phase connecting wire and a span phase connecting wire, the phase connecting wires are made of copper pipes, the similar phase connecting wire is connected with the similar winding, the span phase connecting wire is connected with the windings on two sides, a trapezoidal folded angle is arranged in the middle of the similar phase connecting wire, two ends of the similar phase connecting wire are horizontally collinear, the middle of the span phase connecting wire is a large trapezoidal folded angle, two ends of the span phase connecting wire are horizontally collinear with each other, and the high-voltage phase connecting wire improves the connecting stability and the connecting electrical strength of the high-voltage phase connecting wire under the same electrical safety distance; the overall dimension of the transformer is reduced, the safe distance between the transformer and the shell to the ground is reduced, the overall dimension of the shell is reduced, the use space of a power distribution room is reduced, and the operation is simple and convenient.

Description

High-voltage phase connecting line

Technical Field

The present document proposes the technical field of high voltage phase connection lines, in particular to a reduced volume high voltage phase connection line.

Background

When the connection group of the high-voltage winding of the three-phase transformer is D connection, the connection lead between the three-phase high-voltage coils is triangle connection, and the triangle connection line is usually respectively crossed and connected by a wire inlet end (A, B, C) and a wire outlet end (X, Y, Z) of the three-phase winding.

The method is characterized in that the two ends of the copper pipe are flattened, then the left end and the right end of the copper pipe are symmetrically extended inwards for a certain distance, and then the copper pipe is bent outwards at a certain angle to form an I shape, the outward deviation bending height of the span-wise connecting wire AZ is equal to the distance between two connecting wire leads from AZ to BX or from AZ to CY, the distance is related to the requirement of the insulation safety distance between the electric wires specified by the standard, the higher the voltage is, the larger the electric safety distance between the two connecting wires is, and the external dimension of the transformer is increased.

Dry-type transformers are also generally required to be provided with an enclosure to meet the requirements of protection class as electrical equipment. After the transformer is installed, when the transformer operates in a live state, the high-voltage connection wires need to have certain safety distances to the shell of the transformer or the wall in the distribution room, so that the size of the shell needs to be increased along with the difference of voltage levels, the space of the distribution room is increased, and the comprehensive cost of the transformer with the shell is increased.

SUMMERY OF THE UTILITY MODEL

The high-voltage phase connecting wire is provided, the electrical insulation distance between a span connecting wire and the surface of a high-voltage coil is changed by changing the manufacturing style of the similar phase connecting wire, and the connection stability and the electrical strength of the high-voltage connecting wire are improved.

A high-voltage phase connecting wire is characterized in that phase connecting wires are arranged on the wire inlet end and the wire outlet end of a three-phase winding on a three-phase transformer and comprise close phase connecting wires and span phase connecting wires, and the phase connecting wires are made of copper tubes.

The close phase connecting lines are connected with the close windings, the span phase connecting lines are connected with the windings on two sides, the middle parts of the close phase connecting lines are provided with trapezoid folded angles, two ends of the close phase connecting lines are horizontally collinear, the middle parts of the span phase connecting lines are provided with large trapezoid folded angles, and two ends of the span phase connecting lines are horizontally collinear.

According to the high-voltage connecting wire, under the same electrical safety distance, the electrical insulation distance between the span connecting wire AZ and the surface of the high-voltage coil is changed by changing the manufacturing patterns of the adjacent connecting wires BX and CY, so that the connecting stability and the electrical strength of the high-voltage connecting wire are improved; the overall dimension of the transformer is reduced, the safe distance between the transformer and the shell to the ground is reduced, the overall dimension of the shell is reduced, the using space of a power distribution room is reduced, the operation is simple and convenient, the expected effect is achieved, and the comprehensive cost of the transformer is saved.

One end of the phase connecting wire is connected with the wire inlet end of the winding, the other end of the phase connecting wire is connected with the wire outlet end of the winding, the adjacent connecting wire is connected with the winding in a downward trapezoidal mode, the span connecting wire is connected with the winding in an upward trapezoidal mode, the space between the adjacent connecting wires can be kept at the same electrical safety distance through the connecting wires with different heights and directions, the upward height of the span connecting wire can be correspondingly reduced by the inward deviation size of the corresponding adjacent connecting wire, and namely the electrified distance between the span connecting wire and the surface of the high-voltage coil can be correspondingly reduced.

The bottom surface of the small trapezoid dog-ear of close looks connecting wire is equipped with safe interval with the top surface of the big trapezoid dog-ear of span looks connecting wire between, through dog-ear formula looks connecting wire and the looks connecting wire of different difference in height, under the prerequisite of the insulating safe distance of guaranteeing electrical room, reduced the overall dimension of transformer, reduced the space size of shell, practiced thrift the construction area of distribution room, reduced the comprehensive cost of transformer.

Has the advantages that:

the high-voltage connecting wire achieves the purpose of changing the electrical insulation distance between the span phase connecting wire AZ and the surface of a high-voltage coil by changing the manufacturing patterns of the adjacent phase connecting wires BX and CY under the same electrical safety distance, and improves the connection stability and the electrical strength of the high-voltage connecting wire; the overall dimension of the transformer is reduced, the safe distance between the transformer and the shell to the ground is reduced, the overall dimension of the shell is reduced, the using space of a power distribution room is reduced, the operation is simple and convenient, the expected effect is achieved, and the comprehensive cost of the transformer is saved.

Drawings

FIG. 1 is a front view of a high voltage phase connection;

FIG. 2 is a side view of a high voltage phase connection;

FIG. 3 is a top view of a high voltage phase connection;

in the figure; 1. a close phase connecting line and 2, a span phase connecting line.

Detailed Description

For the purpose of enhancing understanding of the present disclosure, the following detailed description is given with reference to the examples and the accompanying drawings, which are provided for illustration purposes only and do not limit the scope of the present disclosure.

As shown in fig. 1, 2, 3;

the utility model provides a high-voltage phase connecting wire, three-phase transformer go up the inlet wire end and the leading-out terminal of three-phase winding and be equipped with looks connecting wire, the connecting wire include similar looks connecting wire 1 and span looks connecting wire 2, the material of looks connecting wire is the copper pipe, similar looks connecting wire 1 link to each other with similar winding, span looks connecting wire 2 link to each other with the winding of both sides, 1 middle part of similar looks connecting wire be equipped with trapezoidal dog-ear, the mutual level collineation in both ends of similar

looks connecting wire

1, 2 middle parts of span looks connecting wire be big trapezoidal dog-ear, the mutual level collineation in both ends of span looks connecting wire 2, the inlet wire end of one end and winding of looks connecting wire links to each other, the other end of looks connecting wire links to each other with the leading-out terminal of winding, the trapezoidal continuous with the winding that down of similar looks connecting wire 1 trapezoidal of looks connecting wire 2, the bottom surface of the similar trapezoidal dog-ear of looks connecting wire 1 is equipped with the safe interval between the top surface of big trapezoidal dog-ear of span looks connecting wire 2.

A work flow;

two ends of the copper pipe are flattened close to the connecting lines 1BX and CY, then the left end and the right end which are centrosymmetric are respectively extended inwards for a certain distance and are deviated from a certain angle and then are bent inwards, and the bent copper pipe forms a trapezoidal connecting copper pipe which is respectively connected with two binding posts on the high-voltage coil; the span phase connecting wire 2AZ is connected with two binding posts on the high-voltage coil, two ends are flattened during manufacturing, the left end and the right end of the central symmetry respectively extend inwards for a certain distance and then deviate from a certain angle, and then the bent copper pipe forms a trapezoidal connecting copper pipe.

The improved high-voltage connecting lines AZ, BX and CY are easy to operate, and the bent connecting lines have better stability and electrical strength; because the safe distance from the span phase connecting wire 2AZ to the surface of the high-voltage coil is reduced, the overall dimension of the transformer is reduced, the safe distance from the outer shell to the ground is reduced, the overall dimension of the outer shell is reduced, the using space of a power distribution room is reduced, the operation is simple and convenient, the expected effect is achieved, and the comprehensive cost of the transformer is saved.

The above description is intended only to serve as a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, as any modification, equivalent replacement, or improvement made within the spirit and scope of the present disclosure should be included in the present disclosure.

Claims

1. The utility model provides a high-voltage phase connecting wire, is equipped with looks connecting wire on three-phase winding's inlet wire end and leading-out terminal on the three-phase transformer, its characterized in that, the connecting wire include close looks connecting wire and span looks connecting wire, the material of looks connecting wire is copper, close looks connecting wire and close winding link to each other, span looks connecting wire and the winding of both sides link to each other, close looks connecting wire middle part be equipped with little trapezoidal dog-ear, the mutual level collineation in both ends of close looks connecting wire, span looks connecting wire middle part be big trapezoidal dog-ear, the mutual level collineation in both ends of span looks connecting wire.

2. A high voltage phase connection according to claim 1 wherein the material of said adjacent phase connection is a short copper tube.

3. The high voltage phase connection line according to claim 1, wherein the material of the span phase connection line is a long copper tube.

4. A high-voltage phase connection according to claim 1, characterized in that one end of said phase connection is connected to the incoming end of the winding and the other end of said phase connection is connected to the outgoing end of the winding.

5. A high voltage phase connection according to claim 1 wherein said adjacent phase connection is connected to the winding with the phase connection line facing trapezoidally downward and said span phase connection is connected to the winding with the phase connection line facing trapezoidally upward.

6. A high voltage phase connection according to claim 3, wherein a safety distance is provided between the bottom surface of the small trapezoidal fold of the adjacent phase connection and the top surface of the large trapezoidal fold of the span phase connection.

7. A high voltage phase connection according to claim 1, wherein the phase connection lines are provided with insulating sleeves on the outside.