CN205900176U - Electromagnetic wire, electromagnetism pencil and transformer - Google Patents

Abstract

The utility model provides an electromagnetic wire, electromagnetism pencil and transformer. Wherein, the electromagnetic wire includes: wire, first insulation layer and an at least optic fibre, wherein, first insulation layer package is located the outside of wire, optic fibre inlays to be located the first insulation in situ is used for gathering the deflection of wire. The utility model discloses an optic fibre is established through inlaying at the outside first insulation in situ of wire to the electromagnetic wire, deformation volume that light through optical fiber transmission comes the real -time supervision wire, and the deformation condition that makes the staff can know the wire is in real time in time changed the wire that reaches the deformation limit, has avoided because the deformation of wire and the production accident that causes.

Description

Electromagnetic wire, electromagnetic wire harness and transformer

Technical Field

The utility model relates to an electric power system technical field particularly, relates to an electromagnetic wire, electromagnetism pencil and transformer.

Background

Electromagnetic wires are used as an important element for transmitting current, and are widely used in the field of power systems. Generally, a magnet wire includes a conductive wire and an insulating layer, and during energization of the magnet wire, an electromotive force generated by a short-circuit current may deform the conductive wire in the magnet wire, thereby indirectly affecting an electric device in which the magnet wire is installed. For example, when a transformer winding is wound by an electromagnetic wire and an external short circuit occurs in the transformer, the short circuit current flows through the transformer winding to generate electromotive force, which causes deformation of a conductor in the electromagnetic wire. At present, the method for detecting the deformation condition of a transformer winding is to discharge oil to the transformer, and the winding is manually detected by opening an oil tank. In addition, the detection mode cannot find the deformation condition of the transformer winding in time and cannot deal with potential accident danger in time.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an electromagnetic wire aims at solving because can not carry out real-time supervision to the deformation of wire and lead to the problem of potential safety hazard. The utility model also provides an electromagnetism pencil and transformer.

In one aspect, the present invention provides an electromagnetic wire. This magnet wire includes: a wire, a first insulating layer, and at least one optical fiber; wherein the first insulating layer is arranged outside the lead; the optical fiber is embedded in the first insulating layer and used for collecting the deformation of the lead.

Further, in the electromagnetic wire, the optical fiber is embedded along a length direction of the wire.

Furthermore, in the electromagnetic wire, the optical fiber is provided with a plurality of optical fibers; the optical fibers are uniformly distributed along the circumferential direction of the first insulating layer.

Further, in the electromagnetic wire, the first insulation layer is a paint layer coated on the outer surface of the wire.

The utility model discloses an electromagnetic wire is through establishing optic fibre at the outside embedded optical fiber that establishes of first insulation layer of wire, and the deformation volume of light through optical fiber transmission comes the real-time supervision wire makes the deformation condition that the staff can know the wire in real time, in time changes the wire that reaches the deformation limit, has avoided the production accident that causes because the deformation of wire.

On the other hand, the utility model also provides an electromagnetic wire harness, which comprises a second insulating layer and at least two electromagnetic wires according to one aspect of the utility model; wherein each electromagnetic wire is arranged along the length direction; the second insulating layer is arranged outside each electromagnetic wire.

Further, in the electromagnetic wire bundle, each of the electromagnetic wires is divided into two rows, and the two rows of the electromagnetic wires are transposed according to a transposition method of the transposed conductor.

Furthermore, in the electromagnetic wire bundle, a third insulating layer is arranged between two columns of the electromagnetic wires.

Further, in the electromagnetic wire harness, the conducting wire is a flat copper wire.

Further, in the electromagnetic wire harness, the second insulating layer is insulating paper.

Since the magnet wire has the above-mentioned effects, the magnet wire bundle having the magnet wire also has corresponding technical effects.

In another aspect, the present invention further provides a transformer, including a winding, the winding is according to the present invention, on the other hand, the electromagnetic wire harness.

Since the electromagnetic wire harness has the above effects, the transformer having the electromagnetic wire harness also has corresponding technical effects.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a cross-sectional view of an electromagnetic wire according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of optical fiber distribution in an electromagnetic wire according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of an electromagnetic wire harness provided in an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Electromagnetic wire embodiment:

referring to fig. 1, fig. 1 is a cross-sectional view of an electromagnetic wire according to an embodiment of the present invention. As shown, the magnet wire includes: a wire 1, a first insulating layer 2 and an optical fiber 3. Wherein,

the first insulating layer 2 is provided outside the wire 1. In a specific implementation, the first insulating layer 2 may be disposed on an outer side surface of the wire 1. The conducting wire 1 can be selected from copper wire, iron wire or aluminum wire. The cross-sectional shape of the lead 1 may be rectangular, circular, oval, irregular, or the like. The first insulating layer 2 may be a paint layer sprayed on the outer surface of the wire 1.

The optical fiber 3 is embedded in the first insulating layer 2 and used for collecting the deformation of the lead 1. During specific implementation, the optical fiber 3 is embedded in the first insulating layer 2 along the length direction of the wire 1, so that the optical fiber 3 can collect deformation of each position of the length of the wire 1, and the monitoring efficiency is improved.

It will be appreciated by those skilled in the art that the optical fiber in this embodiment should also have a processing device attached thereto. During detection, light is irradiated into the optical fiber 3 by the light source, the optical fiber 3 transmits the light, and after the light is scattered, part of the light returns from the optical fiber 3 and is input to the processing device. When a certain position of the wire 1 is deformed, the first insulating layer 2 is deformed, so that the optical fiber 3 is deformed, at this time, the wavelength of light returning from the optical fiber 3 is changed, and the processing device determines the deformation amount of the wire 1 according to the changed wavelength of the light. In specific implementation, the deformation amount of the winding may be determined according to a change in the wavelength of the light returning to the wire, and of course, the deformation amount of the wire may also be determined according to a change in other parameters of the light known to those skilled in the art, which is not limited in this embodiment. It should be noted that the method for determining the deformation amount of the conductive wire according to the variation of the wavelength of light and other parameters is well known to those skilled in the art, and therefore, will not be described in detail.

It can be seen that this embodiment is through establishing optic fibre at the outside first insulating layer of wire embedded, and the scattered light through optical fibre transmission comes the deformation volume of real-time supervision wire, makes the staff know the deformation condition of wire in real time, in time changes the wire that reaches the deformation limit, has avoided the production accident that causes because the deformation of wire.

Referring to fig. 2, in the above embodiment, there may be one optical fiber 3 or a plurality of optical fibers. When optic fibre 3 was many, many optic fibres 3 along the circumference evenly distributed of first insulating layer 2, this distribution mode can evenly set up a plurality of monitoring points in the circumference of wire 1 to can monitor the deformation condition of wire 1 better.

In conclusion, in the embodiment, the optical fiber is embedded in the first insulating layer outside the lead, and the deformation of the lead is collected through the optical fiber, so that the electric device made of the electromagnetic wire can be well protected.

Electromagnetic wire harness embodiment:

referring to fig. 3, fig. 3 is a cross-sectional view of an electromagnetic wire harness provided in an embodiment of the present invention. As shown, the electromagnetic wire harness includes: a second insulating layer 4 and at least two magnet wires. The specific implementation process of the electromagnetic wire may be as described above, and this embodiment is not described herein again.

Each magnet wire is arranged along the length direction. The second insulating layer 4 is wrapped around the outside of each magnet wire. In specific implementation, the second insulating layer 4 may be insulating paper, or may be other insulating materials known to those skilled in the art, such as plastic sheets, and the embodiment does not limit the specific implementation form of the second insulating layer 4. Preferably, the wires in the electromagnetic wires are flat copper wires.

The electromagnetism pencil in this embodiment is including many electromagnetic wires, all inlays in the first insulating layer of every electromagnetic wire and is equipped with optic fibre, and the scattering light through optical fiber transmission comes the deformation volume of wire in the real-time supervision electromagnetic wire, makes the deformation condition that the staff can know the wire in real time to in time change the wire that reaches the deformation limit, avoided because the deformation of wire and the production accident that causes. In addition, since each electromagnetic wire in the embodiment is provided with the optical fiber, the deformation condition of each electromagnetic wire can be monitored.

When the magnet wire is used as a winding coil, such as a winding in a transformer, an axial electromagnetic field (longitudinal magnetic field) is generated in a main part (middle part) of the winding, and the magnetic field forms an eddy current inside a winding wire through electromagnetic induction, so that eddy current loss is caused, the eddy current loss not only reduces the efficiency of the transformer, but also causes an undesirable local over-high temperature, and the high temperature can cause damage to the insulation of the winding. In order to solve this problem, the above embodiment may be further modified: the electromagnetic wires are divided into two rows, and the two rows of electromagnetic wires are transposed according to the transposition method of the transposed conductor, see fig. 3.

It should be noted that the number of columns of each magnet wire can be determined according to actual situations, and this embodiment does not limit the number of columns.

In order to protect the insulation between two rows of magnet wires and prevent the interference between two rows of magnet wires, a third insulation layer 5 may be disposed between two rows of magnet wires in the magnet wire bundle in the above embodiments. Preferably, the third insulating layer 5 is arranged in the middle of the two columns of magnet wires, i.e. the third insulating layer 5 is equidistant from the two columns of magnet wires.

In summary, in the present embodiment, each electromagnetic wire in the electromagnetic wire bundle is provided with the optical fiber, so that the deformation condition of each electromagnetic wire can be monitored.

The embodiment of the transformer comprises:

the embodiment of the invention also provides a transformer, which comprises a winding, wherein the winding is the electromagnetic wire harness in any embodiment. It is to be understood that the winding is formed by winding the electromagnetic wire bundle. The specific implementation process of the electromagnetic wire harness may be as described above, and this embodiment is not described herein again.

Since the electromagnetic wire harness has the above effects, the transformer having the electromagnetic wire harness also has corresponding technical effects.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. An electromagnetic wire, comprising: a wire (1), a first insulating layer (2) and at least one optical fiber (3); wherein,

the first insulating layer (2) is arranged outside the lead (1);

the optical fiber (3) is embedded in the first insulating layer (2) and used for collecting the deformation of the lead (1).

2. The magnet wire according to claim 1, characterised in that the optical fibres (3) are embedded along the length of the wire (1).

3. The magnet wire according to claim 1,

the optical fibers (3) are multiple;

the optical fibers (3) are uniformly distributed along the circumferential direction of the first insulating layer (2).

4. The magnet wire according to claim 2, characterised in that the first insulating layer (2) is a lacquer layer applied to the outer surface of the conductor wire (1).

5. An electromagnetic wire harness, characterized by comprising a second insulating layer (4) and at least two electromagnetic wires according to any one of claims 1 to 4; wherein,

each electromagnetic wire is arranged along the length direction;

the second insulating layer (4) is arranged outside each electromagnetic wire in a wrapping mode.

6. The electromagnetic wire harness according to claim 5, wherein each of the electromagnetic wires is divided into two columns, and the two columns of the electromagnetic wires are transposed according to a transposition method of the transposed conductor.

7. A bundle according to claim 6, characterized in that a third insulating layer (5) is arranged between two columns of said magnet wires.

8. The electromagnetic wire harness of claim 5, wherein the wire is a flat copper wire.

9. The electromagnetic wire harness of claim 5, wherein the second insulating layer is an insulating paper.

10. A transformer comprising a winding, characterized in that said winding is an electromagnetic bundle according to any one of claims 5-9.