A transformer core

Abstract

The present invention discloses a transformer core, including a core center column, a core side column, and an iron yoke respectively formed by stacking a plurality of first core sheets, a second core sheet, and a third core sheet, wherein a first notch and a second notch are provided on the first core sheet, a first matching plate and a third matching plate are provided in the first notch, a second matching plate is provided in the second notch, a first matching head matching with the first notch is provided on the second core sheet, a first matching groove matching with the first matching plate and a third matching groove matching with the third matching plate are provided on the front and rear sides of the first matching head, a second matching head matching with the second notch is provided on the third core sheet, and a second matching groove matching with the second matching head is provided on the second matching head. The beneficial effect of the present invention is that in the process of stacking the core, the operator does not need to manually adjust the position of the core sheets repeatedly, which saves time and effort and improves the stability of the produced core.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer cores, and in particular relates to a transformer core. Background Art

[0002] The transformer core is the main magnetic circuit of the transformer, and its main function is to conduct magnetism. It converts the electrical energy of the primary circuit into magnetic energy, and then converts the magnetic energy into the electrical energy of the secondary circuit. At the same time, the core also plays the role of supporting the inside of the transformer.

[0003] The production of transformer cores requires cutting, deburring, stacking cores, and binding and fixing. Stacking cores is the most critical step, which will affect the overall stability of the subsequent cores. Stacking cores is to stack the core pieces that make up the various parts of the core in sequence. However, there is a lack of corresponding matching structure between the existing core pieces used to make up the different parts of the core. On the one hand, during the stacking process, the operator needs to manually adjust the position of the core pieces repeatedly, which is inconvenient. On the other hand, it also leads to poor overall stability of the stacked core. Summary of the invention

[0004] In view of the existing transformer core, during the process of stacking the core, the operator needs to make repeated manual adjustments, which is time-consuming and labor-intensive, and the overall stability of the core after stacking is poor. The following invention is now proposed:

[0005] A transformer core comprises a core center column and core side columns arranged on both sides of the core center column, wherein an iron yoke connected to the core side columns is respectively provided at the top and bottom of the core center column, and the iron yoke, the core side columns and the core center column are respectively formed by stacking a plurality of first iron core sheets, a second iron core sheets and a third iron core sheets, the first iron core sheet is provided with a first notch located on both sides and a second notch located in the middle, the first notch is provided with a first matching plate and a third matching plate overlapping each other, the second notch is provided with a second matching plate, the upper and lower ends of the second iron core sheet are provided with a first matching head matching with the first notch, the front and rear sides of the first matching head are provided with a first matching groove matching with the first matching plate and a third matching groove matching with the third matching plate, the ends of the third iron core sheet are provided with a second matching head matching with the second notch, and the second matching head is provided with a second matching groove matching with the second matching plate.

[0006] Furthermore, the first mating plate, the second mating plate and the third mating plate are partially mated in the first mating groove, the second mating groove and the third mating groove respectively, so that after each first iron core piece is installed, part of it protrudes from the surface of the second iron core piece and the third iron core piece, and after the second iron core piece and the third iron core piece are installed, part of it protrudes from the surface of the first iron core piece.

[0007] Furthermore, the first matching plates and the third matching plates on both sides of the first core sheet are arranged in opposite directions.

[0008] Furthermore, on the same second core sheet, the front-to-back arrangement of the first mating groove and the second mating groove on the two upper and lower mating heads is opposite.

[0009] Furthermore, air gaps are provided between adjacent first, second and third core sheets.

[0010] Furthermore, the first iron core sheet, the second iron core sheet and the third iron core sheet are provided with matching fixing holes, and fasteners for fixing and connecting the iron yoke with the iron core side column and the iron core middle column are inserted into the fixing holes.

[0011] The present invention provides a transformer core, which has the beneficial effect of eliminating the need for operators to manually adjust the core pieces during the process of stacking the cores, saving time and effort, and also improving the stability of the stacked core, making it more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the iron core in the present invention;

[0013] Figure 2 It is a schematic diagram of the partially split structure of the iron core in the present invention;

[0014] Figure 3 is a schematic diagram of the three-dimensional structure of the first core sheet in the present invention;

[0015] Figure 4 is a schematic diagram of the three-dimensional structure of the second core sheet in the present invention;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the third iron core sheet in the present invention.

[0017] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0018] 1. Iron yoke; 2. Iron core side column; 3. Iron core middle column; 4. Fixing hole; 5. Air gap; 11. First iron core sheet; 12. First notch; 13. First matching plate; 14. Second matching plate; 15. Third matching plate; 16. Second notch; 21. Second iron core sheet; 22. First matching groove; 23. Third matching groove; 24. First matching head; 31. Third iron core sheet; 32. Second matching groove; 33. Second matching head. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with embodiments.

[0020] Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. in this application indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly for better describing the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] like Figure 1-Figure 5 As shown, it is a transformer core, including a core center column 3 and core side columns 2 arranged on both sides of the core center column 3, wherein an iron yoke 1 is provided at the top and bottom of the core center column 3, and the two ends of the iron yoke 1 are fixedly connected to the core side columns 2, wherein the iron yoke 1, the core side columns 2, and the core center column 3 are respectively composed of a plurality of first core sheets 11, second core sheets 21, and third core sheets 31 stacked. Specifically, a first notch 12 is provided on both sides of the first core sheet 11, and first mating heads 24 matching the first notch 12 are provided at both ends of the second core sheet 21, respectively, and a second notch 16 in a triangular shape is provided on both sides of the first core sheet 11, and second mating heads 33 matching the second notch 16 are provided at both ends of the third core sheet 31. On this basis, a first matching plate 13 and a third matching plate 15 stacked front and back are provided in the first notch 12, wherein the third matching plate 15 is shorter than the first matching plate 13, and a first matching groove 22 matching with the first matching plate 13 and a third matching groove 23 matching with the third matching plate 15 are respectively provided on the front and rear sides of the first matching head 24, a second matching plate 14 extending toward the opening of the second notch 16 is provided in the second notch 16, and a second matching groove 32 matching with part of the second matching plate 14 is respectively provided on the front and rear sides of the second matching head 33.

[0023] In order to further improve the stability of the matching between the iron core sheets, the front and rear stacking positions of the first matching plate 13 and the third matching plate 15 in the first notch 12 on both sides of the first iron core sheet 11 are exactly opposite, and the upper and lower first iron core sheets 11 located at the same horizontal height are centrally symmetrical. Correspondingly, on the upper and lower first matching heads 24 of each iron core sheet, the front and rear arrangement of the first matching groove 22 and the third matching groove 23 is also exactly opposite.

[0024] When laminating the transformer core, Figure 2 As shown, in the first notches 12 on the left and right sides of the upper first iron core sheet 11, the third matching plate 15 is respectively located at the front and rear sides of the first matching plate 13, and in the first notches 12 on the left and right sides of the lower first iron core sheet 11, the third matching plate 15 is respectively located at the rear and front sides of the first matching plate 13. On the first mating head 24 of the second iron core sheet 21 which matches with the left notch of the first iron core sheet 11, there are respectively provided a first mating groove 22 located on the front side of the first mating head 24 and a third mating groove 23 on the rear side. After the second iron core sheet 21 and the third iron core sheet 31 are mated and stacked on the first iron core sheet 11, the rear halves of the second iron core sheet 21 and the third iron core sheet 31 are mated in the first notch 12 and the second notch 16, and the front halves of the second iron core sheet 21 and the third iron core sheet 31 protrude from the surface of the first iron core sheet 11, and the protruding parts of the second iron core sheet 21 and the third iron core sheet 31 just match with the rear half of the first iron core sheet 11 to be installed subsequently, and the cyclic stacking installation of the first iron core sheet 11, the second iron core sheet 21 and the third iron core sheet 31 can be completed in this cycle.

[0025] Furthermore, the thicknesses of the first mating plate 13, the second mating plate 14, and the third mating plate 15 are slightly larger than the first mating groove 22, the second mating groove 32, and the third mating groove 23, so as to leave a small air gap 5 between the first iron core sheet 11, the second iron core sheet 21, and the third iron core sheet 31. Furthermore, matching fixing holes 4 are provided in all mating plates and mating grooves, and by inserting fasteners such as screws into the fixing holes 4, fixed connection between the iron yoke 1 and the iron core side column 2 and the iron yoke 1 and the iron core middle column 3 can be achieved.

[0026] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A transformer core, comprising a core center column (3) and core side columns (2) arranged on both sides of the core center column (3), wherein an iron yoke (1) connected to the core side columns (2) is respectively arranged at the top and bottom of the core center column (3), and the iron yoke (1), the core side columns (2), and the core center column (3) are respectively formed by stacking a plurality of first core sheets (11), a second core sheet (21), and a third core sheet (31), wherein: The first core sheet (11) is provided with first notches (12) located on both sides and a second notch (16) located in the middle; a first matching plate (13) and a third matching plate (15) overlapping each other are provided in the first notch (12); a second matching plate (14) is provided in the second notch (16); a first matching head (24) matching with the first notch (12) is provided at the end of the second core sheet (21); a first matching groove (22) matching with the first matching plate (13) and a third matching groove (23) matching with the third matching plate (15) are provided at the front and rear sides of the first matching head (24); a second matching head (33) matching with the second notch (16) is provided at the end of the third core sheet (31); and a second matching groove (32) matching with the second matching plate (14) is provided on the second matching head (33); The first matching plate (13), the second matching plate (14), and the third matching plate (15) are partially matched in the first matching groove (22), the second matching groove (32), and the third matching groove (23), respectively, so that each first core sheet (11) partially protrudes from the surface of the second core sheet (21) and the third core sheet (31) after installation, and the second core sheet (21) and the third core sheet (31) partially protrude from the surface of the first core sheet (11) after installation; The first matching plates (13) and the third matching plates (15) on both sides of the first core sheet (11) are arranged in opposite directions in front and back; On the same second core sheet (21), the first matching groove (22) and the second matching groove (32) are arranged in the opposite direction on the two upper and lower matching heads.

2. The transformer core according to claim 1, characterized in that: An air gap (5) is provided between adjacent first iron core sheets (11), second iron core sheets (21), and third iron core sheets (31).

3. The transformer core according to any one of claims 1 to 2, characterized in that: Matching fixing holes (4) are provided on the first iron core sheet (11), the second iron core sheet (21) and the third iron core sheet (31), and fasteners for fixing and connecting the iron yoke (1) with the iron core side column (2) and the iron core middle column (3) are inserted into the fixing holes (4).

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