CN217719256U

CN217719256U - Paper-wrapped transposition copper stranded wire for iron resistance

Info

Publication number: CN217719256U
Application number: CN202220832866.9U
Authority: CN
Inventors: 全伟
Original assignee: SHANGHAI SHUNCHAO INDUSTRY CO LTD
Current assignee: SHANGHAI SHUNCHAO INDUSTRY CO LTD
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-11-01
Anticipated expiration: 2032-04-12

Abstract

The utility model discloses an iron reactance paper package transposition copper stranded wire, which is characterized in that the iron reactance paper package transposition copper stranded wire comprises 8 copper stranded wire bodies which are arranged in an upper row and a lower row through transposition, wherein a first insulating layer and a second insulating layer are arranged outside the copper stranded wire bodies; the first insulating material is of a belt-shaped structure, and the first insulating layer is wound and wrapped on the surface of the copper stranded wire body by adopting the first insulating material; the second insulating material is of a strip-shaped structure, and the second insulating layer is wound and wrapped outside the first insulating layer by adopting the second insulating material. Compared with the prior use of the copper flat wire, after the copper wire is used for changing the wire, the average temperature rise of the winding is 59K, the temperature rise of the oil top layer is 49.1K, the temperature rise of the winding is 10K, the loss is reduced by about 4-5 kW, and the additional loss is reduced by at least 20%.

Description

Paper-wrapped transposition copper stranded wire for iron resistance

Technical Field

The utility model belongs to the technical field of the stranded conductor technique and specifically relates to a paper package transposition copper strand wires for iron reactance is related to.

Background

The core type reactor has been used with a wire-covered or enameled flat copper wire, which has a high hardness, so that the winding difficulty is increased, and the wire-covered or enameled flat copper wire can cause environmental pollution. According to experience of manufacturing the transposed aluminum stranded wire for many years, a paper-wrapped transposed copper flat wire is developed, so that a wound cable is softer, eddy current loss is smaller, and a lead can be manufactured more environmentally friendly.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above technical problem, provide an iron is anti with paper package transposition copper strands, it not only can make the coiling cable conductor softer, and eddy current loss is littleer, more enables the more green of wire preparation.

In order to solve the technical problem, an embodiment of the present invention provides an iron reactance paper-wrapped transposed copper stranded wire, which includes 8 copper stranded wire bodies arranged in two rows up and down through twisting transposition, wherein a first insulating layer and a second insulating layer are arranged outside the copper stranded wire body;

the first insulating material is of a strip-shaped structure, and the first insulating layer is wound and wrapped on the surface of the copper stranded wire body by adopting the first insulating material;

the second insulating material is of a strip-shaped structure, and the second insulating layer is wound and wrapped outside the first insulating layer by adopting the second insulating material.

Further, in the copper stranded wire body, the wire diameter of each copper wire is 1.6mm.

Further, the first insulating material and the second insulating material are paper materials.

Further, an adhesive layer is arranged on the surface of the first insulating material layer.

Furthermore, the copper stranded wire body is provided with a radial tapping line outgoing line, an L-shaped turning part is arranged at the connecting part of the radial tapping line outgoing line and the copper stranded wire body, and the L-shaped turning part is welded and fixed on the copper stranded wire body.

Further, the first insulating material and the second insulating material are cable paper.

Further, the first insulating material and the second insulating material are made of aramid fiber paper.

Furthermore, the surface of the copper stranded wire body is provided with equidistant indentation parts perpendicular to the length extension direction of the copper stranded wire body, and the indentation parts are matched with the wire diameter of the copper wire.

Of course, an intermediate layer may be disposed between the first and second insulating layers, and the intermediate layer includes, but is not limited to, a carbon fiber layer, and may also be an aluminum foil layer.

Further, the thickness of the cable paper is 0.075mm.

The utility model discloses following beneficial effect has:

1. the small-size iron-core type reactor wire coiling radius is little, but has reduced the coiling degree of difficulty behind the copper wire replacement line of using the paper package for work efficiency.

2. Compared with the prior use of the copper flat wire, after the copper wire is used for changing the wire, the average temperature rise of the winding is 59K, the temperature rise of the oil top layer is 49.1K, the temperature rise of the winding is 10K, the loss is reduced by about 4-5 kW, and the additional loss is reduced by at least 20%.

Drawings

Fig. 1 is a schematic structural view of a paper-wrapped transposed copper stranded wire for iron reactance in a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a paper-wrapped transposed copper stranded wire for iron reactance in a second embodiment of the present invention.

Fig. 3 is a schematic structural view of a transposed copper stranded wire wrapped with paper for iron reactance in a third embodiment of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.

The utility model discloses a first embodiment provides iron is anti with paper package transposition copper strands, refers to fig. 1, and it includes 8 copper strands bodies 1 of arranging through transposition formation upper and lower two rows, in the copper strands body, the line footpath of every copper line 1-1 is 1.6mm, copper strands body outside has two-layer cable paper 2 around the package, the thickness of cable paper is 0.075mm.

The technical parameters of the paper-wrapped transposition copper stranded wire after being used for the 3800/66 type oil-immersed reactor are compared:

the utility model discloses a second embodiment provides iron resists paper package transposition copper strand wires, and it includes the cable paper after 0.075mm, the inside copper line of cable paper, here the inside copper line structure of cable paper is 2 x 4/1.6's structure, and copper line footpath is 1.6mm promptly, and the form of arranging is two rows of arranging about forming through the transposition of transposition, and every copper line quantity of arranging is four.

In this embodiment, referring to fig. 2, 8 copper stranded wire bodies 1 arranged in two rows up and down are formed by twisting transposition, a first insulating layer 2a and a second insulating layer 2b are arranged outside the copper stranded wire bodies, and in this figure, it can be seen that the first insulating material and the second insulating material are both in a belt-shaped structure and are distributed in a winding and wrapping manner, and the first insulating material and the second insulating material may be cable paper or other materials, for example, aramid fiber paper is selected in this embodiment, or a combination of the aramid fiber paper and the cable paper (in this case, the first insulating material is cable paper, and the second insulating material is aramid fiber paper).

It should be noted that, considering that the two insulating material windings wrap the exterior of the copper stranded wire body, the surface of the copper stranded wire body can be provided with the equally spaced indentations 3 perpendicular to the length extension direction thereof, the indentations can avoid the problem of slippage between the insulating material and the copper stranded wire body, and the occurrence of the indentations can be used as a winding reference object for the first insulating material winding to ensure the structural uniformity of each winding.

The utility model discloses a third embodiment provides iron is anti to be wrapped with paper transposition copper strands, see fig. 3, the surface insulation structure who comprises first insulating layer 2a and second insulating layer 2b is shown in this figure, the first insulating layer can adopt aramid fiber paper, this aramid fiber paper is the tape structure, aramid fiber paper's width is a centimetre (for example 2-3 cm), and second insulating layer material insulating paper, insulating paper's width is b centimetre (0.5-1.5 cm), wherein, a > b, as an option, with a value 2cm, b value 0.7cm, can cover interior copper line structure fast through the second insulating layer of broad, and outer second insulating layer can improve the overlap joint distance of the adjacent position department of outer insulating layer through narrower structure and improve outermost insulation structure's structural strength and stability.

The copper stranded wire bodies 1 arranged inside the two insulating layers are formed by 8 copper wires distributed in an upper row and a lower row through transposition, and in order to improve the stability and the strength of the insulating structure outside the copper stranded wire bodies, bonding layers such as bonding glue can be arranged outside the first insulating layer, so that the compactness of the external structure can be further prompted.

The utility model discloses a fourth embodiment provides iron is anti to be wrapped with paper and is transposed copper strand, in this embodiment, the copper strand body is provided with radial shunting line lead-out wire 4 (this radial shunting line lead-out wire 4's structure can participate in arbitrary iron is anti to be wrapped with paper and is transposed copper strand in embodiment 1-embodiment 3), and radial shunting line lead-out wire is provided with L type turn portion with the connecting portion position of copper strand body, and L type turn portion welded fastening is in the copper strand body.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims

1. The paper-wrapped transposition copper stranded wire for the iron resistance is characterized by comprising 8 copper stranded wire bodies which are arranged in an upper row and a lower row and are formed by transposition, wherein a first insulating layer and a second insulating layer are arranged outside the copper stranded wire bodies;

2. The iron resistance paper-covered transposition copper strand as claimed in claim 1, wherein the wire diameter of each copper wire in the copper strand body is 1.6mm.

3. The ferroresistant paper-covered transposed copper strand of claim 1, wherein said first and second insulating materials are paper materials.

4. The iron resistance paper-covered transposition copper strand as claimed in claim 1, wherein an adhesive layer is provided on the surface of the first insulating material layer.

5. The ferroresistant paper-covered transposition copper stranded wire according to claim 1, wherein the copper stranded wire body is provided with a radial tap line outgoing wire, an L-shaped turn portion is provided at a connecting portion of the radial tap line outgoing wire and the copper stranded wire body, and the L-shaped turn portion is welded and fixed to the copper stranded wire body.

6. The paper-covered transposed copper strand for iron resistance according to claim 3, wherein said first and second insulating materials are cable paper.

7. The paper-covered transposed copper strand for iron resistance according to claim 3, wherein the first insulating material and the second insulating material are aramid fiber paper.

8. The paper-covered transposition copper stranded wire for iron resistance according to claim 1, characterized in that the surface of the copper stranded wire body is provided with equally spaced indentations perpendicular to the direction in which the length thereof extends.

9. The anti-iron paper-covered transposition copper strand as claimed in claim 6, wherein the thickness of the cable paper is 0.075mm.