CN212084677U

CN212084677U - Seven-core aluminum transposition electromagnetic wire

Info

Publication number: CN212084677U
Application number: CN201922330022.5U
Authority: CN
Inventors: 杨帆; 方建跃
Original assignee: Tianjin Jingwei Zhengneng Electrical Equipment Co ltd
Current assignee: Tianjin Jingwei Zhengneng Electrical Equipment Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-12-04
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to a reactor technical field especially relates to a seven core aluminium transposition electromagnetic wire, including aluminium circle line, aluminium circle line diameter is between 0.5 ~ 1.3mm, aluminium circle line is seven, seven aluminium circle lines stranding seven strand wires, seven strand wires outsourcing have first insulation film and second insulation film to constitute the monomer wire, and a plurality of monomer wires constitute the electromagnetic wire of rectangle, and the electromagnetic wire outsourcing has third insulation film and fourth insulation film. The utility model discloses an exchange dry-type air-core reactor to large capacity heavy current, the big direct current of higher harmonic current or exchange dry-type air-core reactor replace traditional monofilament circle line or transposition electromagnetic wire. The problems of large loss and high local temperature rise caused by eddy current are solved, the weight of the reactor is reduced, and the cost is greatly reduced.

Description

Seven-core aluminum transposition electromagnetic wire

Technical Field

The utility model relates to a reactor technical field especially relates to a seven-core aluminium transposition electromagnetic wire.

Background

For the alternating current dry-type air-core reactor with large capacity and large current, the direct current or alternating current dry-type air-core reactor with large higher harmonic current has large eddy current loss and high local temperature generated by the reactor winding under the action of skin effect due to very large fundamental frequency alternating current or large high frequency current. The traditional reactor generally adopts monofilament round wires or transposed electromagnetic wires, the sectional areas of the wires are large, and the direct proportion relation between induced electromotive force and the areas can be known according to an electromagnetic induction formula, so that the eddy current loss generated when the wires are used is large, the temperature is increased, more wires are increased to meet the design requirements, the coil is heavier in weight, the cost is higher, the loss is large, and the temperature is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a seven-core aluminum transposition electromagnetic wire.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides a seven core aluminium transposition electromagnetic wires which characterized in that: the aluminum round wire comprises an aluminum round wire, the diameter of the aluminum round wire is 0.5-1.3 mm, the aluminum round wire comprises seven aluminum round wires, seven aluminum round wires are twisted into seven stranded wires, the seven stranded wires are wrapped with a first insulating film and a second insulating film to form a single conductor, a plurality of single conductors are combined into a rectangular electromagnetic wire, and a third insulating film and a fourth insulating film are wrapped on the electromagnetic wire.

Preferably, the number of the electromagnetic wires is two, and each row is 8.

A manufacturing method of a seven-core aluminum transposition electromagnetic wire is characterized by comprising the following steps: the method comprises the following steps: step 1: drawing an aluminum rod into an ultra-fine monofilament aluminum round wire with a design specification, wherein the diameter of the monofilament aluminum round wire is 0.5-1.3 mm;

step 2: 7 monofilament aluminum round wires are stranded into seven stranded wires according to a certain lay length, the round cross section is formed regularly, and obvious stranding deformation does not exist;

and step 3: wrapping the seven strands of twisted wires by two layers of insulating polyester films or polyimide films;

and 4, step 4: forming a rectangular cross section by regularly wrapping the insulated seven strands of twisted wires according to a certain twisting pitch, wherein no obvious twisting deformation exists;

and 5: wrapping the twisted wire in the step 4 by two layers of insulating films;

step 6: and finally, the insulation among the seven stranded wires in the obtained electromagnetic wire needs to be perfect, and the aluminum wires are not conducted. The mutual difference of the direct current resistance of each seven stranded wire in the electromagnetic wire relative to the average value is not more than +/-1%, the insulation resistance of each seven stranded wire in the electromagnetic wire to other seven stranded wires is required to be more than 500 MOmega, and 500V voltage is applied.

The utility model has the advantages that: the utility model discloses an exchange dry-type air-core reactor to large capacity heavy current, the big direct current of higher harmonic current or exchange dry-type air-core reactor replace traditional monofilament circle line or transposition electromagnetic wire. The problems of large loss and high local temperature rise caused by eddy current are solved, the weight of the reactor is reduced, and the cost is greatly reduced.

Drawings

FIG. 1 is a schematic structural diagram of a twisted wire in the present invention;

fig. 2 is a schematic structural view of the device.

Detailed Description

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1-2, a seven-core aluminum transposed electromagnetic wire includes an aluminum round wire 1, the diameter of the aluminum round wire is 0.5-1.3 mm, the aluminum round wire includes seven aluminum round wires, the seven aluminum round wires are twisted into seven strands, the seven strands are wrapped by a first insulating film 2 and a second insulating film 3 to form a single conductor, the plurality of single conductors are combined into a rectangular electromagnetic wire, and the electromagnetic wires are arranged in two rows, each row including 8 electromagnetic wires. The electromagnetic wire is coated with a third insulating film 4 and a fourth insulating film 5. When the lead wire is applied to the condition that fundamental frequency alternating current is very large or high frequency current is large, the loss of the reactor can be greatly reduced, the local overheating of the reactor can be reduced, and the weight of the reactor is reduced.

The manufacturing method of the structure comprises the following steps: step 1: drawing the aluminum rod into a superfine monofilament aluminum round wire with a design specification, wherein the diameter of the monofilament aluminum round wire is 0.5-1.3 mm.

Step 2: 7 monofilament aluminum round wires are stranded into seven stranded wires according to a certain lay length, the round cross section is formed regularly, and obvious stranding deformation does not exist.

And step 3: seven strands of twisted wire were wrapped around two layers of insulating polyester film or polyimide film, see fig. 1.

And 4, step 4: the seven strands of twisted wires wrapped with the insulation are regularly formed into a rectangular section according to a certain lay length, and no obvious twisting deformation exists.

And 5: and (4) wrapping the stranded conductor in the step (4) by two layers of insulating films.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a seven core aluminium transposition electromagnetic wires which characterized in that: the aluminum round wire comprises an aluminum round wire, the diameter of the aluminum round wire is 0.5-1.3 mm, the aluminum round wire comprises seven aluminum round wires, seven aluminum round wires are twisted into seven stranded wires, the seven stranded wires are wrapped with a first insulating film and a second insulating film to form a single conductor, a plurality of single conductors are combined into a rectangular electromagnetic wire, and a third insulating film and a fourth insulating film are wrapped on the electromagnetic wire.

2. The seven-core aluminum transposed electromagnetic wire of claim 1, wherein: the electromagnetic wires are arranged in two rows, and each row comprises 8 electromagnetic wires.