CN210722700U - Single spiral coil transposition structure and coil - Google Patents

Abstract

The application discloses single spiral coil transposition structure, coil, this structure includes: the device comprises a bottom supporting plate, side supporting plates and a guide plate, wherein one end of the bottom supporting plate is connected with one end of each side supporting plate through a first turnover plate; the other end of the side supporting plate is connected with one end of the guide plate through a second turnover plate; the other end of the guide plate is formed by extending the vertical side support plate outwards; the long edge of the guide plate comprises: the plane of the third narrow surface is parallel to the plane of the second wide surface. The wires wound on the surface of the paper tube in the plurality of wires connected in parallel in the coil can be sequentially transposed to the outermost layer of the coil, the total transposition frequency is the number of the wires connected in parallel, the wires are uniformly distributed on the whole coil after transposition, and any two wires only have one cross point, so that the occurrence of wire concentrated points can be completely avoided, and the use safety is improved.

Description

Single spiral coil transposition structure and coil

Technical Field

The application relates to a single spiral coil transposition structure and a coil, and belongs to the technical field of power transmission.

Background

The single spiral coil is a winding type commonly adopted by a low-voltage winding of a power transformer, and has the advantages of simple structure and wide application range. The total number of turns of the single-spiral coil is dozens to one hundred, the number of the parallel wires is not more than 48, and in the distribution of the triangular leakage magnetic field, the wires close to the main leakage magnetic air channel are positioned at the position with high leakage magnetic flux density, so that the induced leakage potential is larger than that of the wires far away from the main air channel, and potential difference exists among the parallel wires, thereby causing circulating current.

In order to eliminate or reduce circulating current, the wires need to be transposed, and the transposition is divided into complete transposition and incomplete transposition. The positions of the wires in the leakage magnetic field are the same through transposition, and the wires are called complete transposition, otherwise, the wires are called incomplete transposition.

The transposition structure used by the existing single-spiral coil is mainly one-time standard transposition, 212 transposition, 424 transposition or 242 transposition; the standard transposition is carried out at 1/2 of the total number of turns N of the coil;

212 transposition is to divide the parallel wires into two groups (the difference between the two groups of numbers is less than or equal to 1), and each special transposition is carried out at 1/4 and 3/4 of the total number of turns N, so that the special transposition is combined into one group of standard transposition carried out at 1/2 of the total number of turns N; taking 8 leads as an example, referring to fig. 1, after winding according to the existing transposition method, the number of concentrated points of the leads is large, and the number of concentrated points is increased along with the increase of the number of the leads and the difference of the transposition modes, so that the potential safety hazard of the coil in use is increased.

Because the number of the parallel wound wires of the transformer coil is different, the coil transposition structures exist under the conditions that the leakage flux positions occupied by the wires are different and the positions are not completely transposed; meanwhile, the transposition points of the transposition structure are concentrated, the insulation structure at the transposition position is weak, fault points are easy to occur, the transposition process of the existing transposition structure is complex, and production workers are difficult to master.

SUMMERY OF THE UTILITY MODEL

According to an aspect of the present application, a single spiral coil transposition structure and a coil are provided, which are used for solving the above problems in the prior art.

An aspect of the present application further provides a single spiral coil transposition structure, including: the device comprises a bottom supporting plate, side supporting plates and a guide plate, wherein one end of the bottom supporting plate is connected with one end of each side supporting plate through a first turnover plate;

the other end of the bottom support plate is formed by extending outwards along the vertical side support plate;

the long edge of the side supporting plate comprises: a first broad face and a first narrow face; the long edge of the bottom support plate comprises: a second broad face and a second narrow face,

the first narrow surface faces the second wide surface, and the plane where the first wide surface is located is parallel to the plane where the second narrow surface is located;

the other end of the side supporting plate is connected with one end of the guide plate through a second turnover plate;

the other end of the guide plate is formed by extending the vertical side support plate outwards;

the long edge of the guide plate comprises: the plane of the third narrow surface is parallel to the plane of the second wide surface.

Preferably, the longitudinal center surfaces of the side support plates are in the same plane with the transverse center surfaces of the bottom support plate and the guide plate, respectively.

Another aspect of the present application is also directed to a coil, comprising: at least two wire cakes, the wire cake includes: a paper tube, a transposition structure as shown above, a plurality of wires; the wire is wound on the outer wall of the paper tube to form a wire cake.

Preferably, the transposition arrangement comprises: the wire cake guiding device comprises a bottom supporting plate, side supporting plates and a guide plate, wherein the bottom supporting plate is clamped between two wire cakes;

the side supporting plate is supported on the outer side wall of the paper tube;

the guide plate is arranged on the periphery of the top surface of the paper tube.

Preferably, the wire cake comprises: the initial lead is wound on the outer wall of the paper tube to the transposition point, and then wound on the outer side of the guide plate and wound on the outer wall of the wire cake;

at the transposition points, the initial conductor forms a crossover point with each of the remaining conductors.

Preferably, two adjacent intersections are laterally spaced from each other and longitudinally spaced from each other.

Preferably, the method further comprises the following steps: and a plurality of cushion blocks are arranged between two adjacent wire cakes along the circumferential direction of the wire cakes in a cushioning manner.

Preferably, the method further comprises the following steps: the supporting seat and the supporting strips are arranged on the inner wall of the paper tube along the circumferential direction of the paper tube, and the side walls of the supporting strips are abutted to the inner wall of the paper tube; the fiber container is installed on the supporting seat, and one end of the stay is installed on the supporting seat.

The beneficial effects that this application can produce include:

1) the single-spiral coil transposition structure can sequentially transpose the wires wound on the surface of the paper tube in the plurality of wires connected in parallel in the coil to the outermost layer of the coil, the total transposition times are the number of the wires connected in parallel, the wires are uniformly distributed on the whole coil after transposition, only one cross point exists in any two wires, the phenomenon of a wire concentrated point can be completely avoided, and the use safety is improved.

2) According to the single-spiral coil transposition structure, transposition points are uniformly distributed, and the situation that the transposition points are concentrated is avoided, so that fault points are avoided; in addition, the structure is simple, the operation is convenient, the operation is easy to master, and the situations of different magnetic leakage positions occupied by each wire and incomplete transposition caused by unfamiliarity in operation work are avoided; and the transposition structure is not limited by the number of parallel wires, and is suitable for various coils.

3) The structure is adopted to perform wire transposition, transposition is uniform and ordered, several wires are connected in parallel, and then several times of transposition is performed, so that the operation is convenient, and the wire changing process is easy to memorize. Is suitable for workers with different learning degrees to operate and use.

Drawings

FIG. 1 is a schematic diagram of the arrangement of 212 transposed conductors in parallel connection with 8 conductors by a winding method according to the prior art;

fig. 2 is a schematic perspective structure view of a single spiral coil transposition structure provided by the present application;

fig. 3 is a schematic front view of a single-spiral coil transposition structure provided by the present application;

fig. 4 is a schematic diagram of position arrangement after transposition and winding of 4 wires in the embodiment of the present application;

fig. 5 is a schematic diagram of position arrangement of 8 wires after transposition and winding in the embodiment of the present application;

fig. 6 is a schematic diagram of a coil structure provided in the present application.

Illustration of the drawings:

100. a bottom support plate; 110. a first roll-over plate; 200. side supporting plates; 210. a second roll-over plate; 300. a guide plate; 410. a stay; 420. a paper tube; 430. a wire cake; 440. cushion blocks; 450. And (4) supporting the base.

Detailed Description

The present application will be described in detail with reference to examples, but the present application is not limited to these examples.

Referring to fig. 2, the present application provides a single spiral coil transposition structure, including: the guide plate comprises a bottom support plate 100, side support plates 200 and guide plates 300, wherein the bottom support plate 100 is a short plate, and one end of the bottom support plate 100 is connected with one end of each side support plate 200 through a first turnover plate 110; the other end of the bottom support plate 100 is formed to extend outward in the vertical side support plate 200. The bottom support plate 100 is perpendicular to the side support plates 200. The side support plate 200 includes on the long side: a first broad face and a first narrow face; the bottom support plate 100 includes on the long side: a second broad face and a second narrow face. After the first flipping plate 110 is flipped, the first narrow side of the side support plate 200 faces the second wide side of the bottom support plate 100. The plane of the first wide face of the side support plate 200 is parallel to the plane of the second narrow face.

The other end of the side support plate 200 is connected to one end of the guide plate 300 through the second flipping plate 210. The other end of the guide plate 300 is formed to extend outward from the vertical side support plate 200. The guide plate 300 includes on the long side: and a third narrow surface and a third wide surface, and after the second turning, the plane where the third narrow surface of the guide plate 300 is located is parallel to the plane where the second wide surface of the side support plate 200 is located.

Referring to fig. 3, based on the above embodiment, in a specific embodiment, the longitudinal center planes of the side support plates 200 are in the same plane with the transverse center planes of the bottom support plate 100 and the guide plate 300, respectively. The size of the wire cake 430 can be controlled, and the wire cake 430 can be prevented from being too large.

The transposition structure adopts the structure of overturning and then overturning, so that the effective adjustment of the position arrangement of the winding can be realized, and the technical effect of uniform arrangement of the cross points of the wires after winding is realized. And the operation is simple, the device is suitable for various workers to operate, and the misoperation range is avoided.

In an embodiment, the winding structure provided by the application is adopted to wind 4 wires, the wire 1 is wound on the outer wall of the paper tube 420, when the wire is wound to the first transposition point, the wire 1 is wound from the outer side of the wire guide plate of the transposition structure to the outer side of the wire guide layer and forms a cross point with the wires 2-4 in half, then the wire 1 winds at the outermost side, the winding 1-4 is continued, the wire 2 enters the innermost side, and when the wire 2 reaches the transposition point, the operation is repeated until the whole winding operation is completed. After winding, the cross points of the leads in the coil are uniformly distributed as shown in fig. 4, so that the concentration of the leads can be effectively avoided, and the use safety of the coil is improved. The operation process is simple, and various operators can operate the device.

In another embodiment, 8 wires are wound by using the winding structure provided by the present application, the operation process is the same as that of the previous embodiment, the distribution of the crossing points of the wires after winding is as shown in fig. 5, and after the transposer provided by the present application is used, the crossing points of the wires are distributed uniformly without wire concentration.

Referring to fig. 6, another aspect of the present application is a coil, which includes at least two wire cakes 430, where the wire cakes 430 include a paper tube 420 and the above-mentioned transposition structure, and a plurality of wires; the plurality of wires are wound on the outer wall of the paper tube 420 to form a wire cake 430.

The bottom support plate 100 of the index structure is sandwiched between the wire cakes 430. The side supporting plate 200 is supported on the outer side wall of the paper tube 420; the guide plate 300 is arranged on the periphery of the top surface of the paper tube 420; the wire is wound on the outer wall of the paper cylinder 420, and when the wire is wound to the transposition point, the wire is wound to the outer side of the wire guide plate and is wound on the outer surface of the side support plate 200; at the transposition points, the innermost wires respectively form intersections with the remaining wires. The coil cross points are uniformly distributed, so that the wire cross points or the wires are effectively prevented from being excessively concentrated at the transposition points, and the use stability is improved.

In one embodiment, two adjacent intersections of the wire cake 430 are spaced laterally and longitudinally from each other.

Based on the above embodiment, in another embodiment, the coil further includes: and a plurality of cushion blocks 440 are arranged between two adjacent wire cakes 430 along the circumferential direction of the wire cakes.

Based on the above embodiment, in another embodiment, the coil further includes: the supporting seat 450 and a plurality of stays 410, the stays 410 are arranged on the inner wall of the paper cylinder 420 along the circumferential direction of the paper cylinder 420, and the side wall of each stay 410 is abutted against the inner wall of the paper cylinder 420; the paper cylinder 420 is mounted on the support base 450, and one end of the stay 410 is mounted on the support base 450. So as to support the paper tube 420 with a certain height and improve the bearing capacity of the paper tube 420.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (8)

1. A single spiral coil transposition structure, characterized by comprising: the device comprises a bottom support plate (100), side support plates (200) and guide plates (300), wherein one end of the bottom support plate (100) is connected with one end of each side support plate (200) through a first turnover plate (110);

the other end of the bottom support plate (100) is formed by extending outwards perpendicular to the side support plates (200);

the long side of the side supporting plate (200) comprises: a first broad face and a first narrow face; the bottom support plate (100) includes on the long side: a second broad face and a second narrow face,

the first narrow face faces the second wide face, and a plane where the first wide face is located is parallel to a plane where the second narrow face is located;

the other end of the side supporting plate (200) is connected with one end of the guide plate (300) through a second turnover plate (210);

the other end of the guide plate (300) extends outwards and is formed perpendicular to the side supporting plate (200);

the guide plate (300) includes on its long side: the plane of the third narrow surface is parallel to the plane of the second wide surface.

2. The single-spiral coil transposition structure according to claim 1, wherein the longitudinal center plane of the side support plate (200) is coplanar with the lateral center plane of the bottom support plate (100) and the lateral center plane of the guide plate (300), respectively.

3. A coil, comprising: at least two wire cakes (430), the wire cakes (430) comprising: a paper sleeve (420), a transposed structure as shown in claim 1 or 2, a plurality of wires; the wire is wound on the outer wall of the paper tube (420) to form the wire cake (430).

4. The coil of claim 3, wherein the indexing structure comprises: the wire cake guide device comprises a bottom support plate (100), side support plates (200) and guide plates (300), wherein the bottom support plate (100) is clamped between two wire cakes (430);

the side supporting plate (200) is supported on the outer side wall of the paper tube (420);

the guide plate (300) is arranged on the periphery of the top surface of the paper tube (420).

5. The coil as set forth in claim 3, wherein the cake (430) includes: the initial lead wire is wound on the outer wall of the paper cylinder (420) to the transposition point, wound on the outer side of the guide plate (300) and wound on the outer wall of the wire cake (430);

at the transposition points, the initial lead and each of the remaining leads form intersection points respectively.

6. A coil according to claim 5, wherein two adjacent ones of said intersections are laterally spaced from each other and longitudinally spaced from each other.

7. The coil of claim 3, further comprising: and the cushion blocks (440) are arranged between two adjacent wire cakes (430) along the circumferential direction of the wire cakes in a cushioning mode.

8. The coil of claim 3, further comprising: the supporting seat (450) and a plurality of stays (410), the stays (410) are arranged on the inner wall of the paper tube (420) along the circumferential direction of the paper tube (420), and the side wall of each stay (410) is abutted to the inner wall of the paper tube (420); the paper tube (420) is mounted on the supporting seat (450), and one end of the stay (410) is mounted on the supporting seat (450).

Images