Transformer terminal board fixing structure and transformer

Abstract

The utility model discloses a transformer terminal board fixing structure and a transformer, and belongs to the field of transformer winding installation, the transformer terminal board fixing structure comprises a board main body, and a central bending line is transversely arranged in the central area of the board main body. The plate body is divided into a first cover plate and a second cover plate which are longitudinally equal in length through the center bending line, two first bending plates which are symmetrical along the longitudinal center line are arranged on the two sides of the first cover plate, and two second bending plates which are symmetrical along the longitudinal center line are arranged on the two sides of the second cover plate. The longitudinal length of the first bent plate is larger than that of the second bent plate. By arranging the transverse center bending line in the center of the plate body, the symmetry of the structure is achieved, the installation stability is improved, the first bending plate and the second bending plate are arranged to be different in length, and the stability of the fixing structure can be directly guaranteed by means of folding installation of the first bending plate and the second bending plate which are different in length in the installation process; and an additional supporting structure is not needed.

Description

Technical Field

[0001] The utility model belongs to the field of transformer winding installation, and in particular relates to a transformer terminal board fixing structure and a transformer. Background Art

[0002] In power systems, transformers are key electrical devices responsible for voltage conversion to meet the needs of various electrical devices and the transmission requirements of the power grid. Transformers are precision-engineered, and the terminal block, a key component connecting the high- and low-voltage windings with the external circuit, has a crucial bearing on the transformer's safe operation, ease of maintenance, and stable electrical performance.

[0003] However, the transformer terminal board fixing mechanism in the prior art is not very reasonable. For example, the utility model patent with publication number CN218730318U discloses a transformer terminal fixing structure and a transformer. The terminal fixing structure includes: an insulating plate body, which is a double-layer plate body, the first end of the first plate body is connected to the first end of the second plate body, and the second ends of the first plate body and the second plate body are bent in the same direction on both sides to form a bent portion; a first mounting hole and a second mounting hole are provided at the connection between the two plates, and a third mounting hole on the same side as the first mounting hole and a fourth mounting hole on the same side as the second mounting hole are provided in the middle of the second plate body. The first terminal connected to the transformer winding is installed in the first mounting hole and the third mounting hole, and the second terminal connected to the transformer winding is installed in the second mounting hole and the fourth mounting hole; a fixing part is located at the second end of the insulating plate body, and the fixing part fixes the insulating plate body to the transformer winding.

[0004] In the solution disclosed in this utility model patent, the structure is unstable and a hard support plate needs to be added inside to ensure the stability of the fixed structure and prevent it from shaking. The structure is unreasonable and the installation steps are relatively cumbersome.

[0005] In view of this, this application is hereby filed. Utility Model Content

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a transformer terminal board fixing structure and a transformer. The present invention is achieved through the following technical solutions:

[0007] A transformer terminal plate fixing structure includes a plate body, a central bending line is horizontally arranged in the central area of the plate body, and the central bending line divides the plate body into a first cover plate and a second cover plate of equal length in the longitudinal direction. Two first bent plates are arranged on both sides of the first cover plate, which are symmetrical along the longitudinal center line. Two second bent plates are arranged on both sides of the second cover plate, which are symmetrical along the longitudinal center line. The longitudinal length of the first bent plate is greater than the longitudinal length of the second bent plate.

[0008] Preferably, the plate body is made of insulating material.

[0009] Preferably, two first bending lines symmetrical to each other along the longitudinal center line are longitudinally arranged on the first cover plate, the first bending plate is bent along the first bending line, and the two first bending plates are both extended toward the outside, and two second bending lines symmetrical to each other along the longitudinal center line are longitudinally arranged on the second cover plate, the second bending plate is bent along the second bending line, and the two second bending plates are both extended toward the outside.

[0010] Preferably, the extension lines of the first bending line and the second bending line on the same side are arranged to coincide with each other.

[0011] Preferably, two first mounting holes are formed on the central bending line, and two second mounting holes are formed on the second cover plate corresponding to the two first mounting holes.

[0012] Preferably, the two first mounting holes and the two second mounting holes are correspondingly arranged on the extension lines of the two first bending lines.

[0013] Preferably, the ends of the first bent plate and the second bent plate are both arranged beyond the two side edges of the plate body.

[0014] Preferably, the first cover plate is arranged in contact with the winding of the transformer, and the second cover plate is folded upward along the central bending line to cover the first cover plate to form a fixed structure.

[0015] Preferably, a first fixing belt is wound around the fixing structure along the longitudinal center line, and a second fixing belt is wound around one end of the fixing structure where the first mounting hole is provided.

[0016] The utility model also provides a transformer, comprising a magnetic core and a winding wound on the magnetic core, wherein the transformer terminal board fixing structure as described above is installed on the winding, and a first cover plate of the transformer terminal board fixing structure is arranged in contact with the winding.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By setting a horizontal center bending line in the center of the plate body, the symmetry of the structure is achieved and the stability of the installation is improved. The first bending plate and the second bending plate are set to different lengths. During installation, the stability of the fixed structure can be directly ensured by folding the first bending plate and the second bending plate of different lengths without the need for additional supporting structure.

[0019] 2. By providing symmetrical first and second bending lines on the first and second cover plates and extending the bending plates outward, the mechanical stability of the structure can be enhanced.

[0020] 3. By arranging the first bending line and the extension line of the second bending line on the same side to coincide with each other, the installation and positioning process is simplified, the assembly accuracy is improved, the fixed structure is made more compact and unified, the error during assembly is reduced, and the overall coordination and aesthetics of the structure are enhanced.

[0021] 4. By designing the first mounting hole opened on the bending line and the corresponding second mounting hole on the second cover, a precise position is provided for fixing screws or fasteners, which facilitates quick installation and disassembly, improves maintenance efficiency, and also enhances the firmness of the terminal board fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the main body of the plate of the utility model;

[0023] Figure 2 This is a schematic diagram of the installation structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the installation of the fixed structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the transformer winding installation structure in the utility model.

[0026] In the figure: 1. Plate body; 11. Center bending line; 12. First cover plate; 13. Second cover plate; 14. First bending plate; 15. Second bending plate; 16. First bending line; 17. Second bending line; 18. First mounting hole; 19. Second mounting hole; 2. Winding; 3. First fixing strap; 4. Second fixing strap. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 1 – Figure 4 As shown, this embodiment provides a transformer terminal board fixing structure, including a plate body 1, a central bending line 11 is horizontally arranged in the central area of the plate body 1, and the central bending line 11 divides the plate body 1 into a first cover plate 12 and a second cover plate 13 of equal length in the longitudinal direction, two first bending plates 14 symmetrical along the longitudinal center line are arranged on both sides of the first cover plate 12, and two second bending plates 15 symmetrical along the longitudinal center line are arranged on both sides of the second cover plate 13, and the longitudinal length of the first bending plate 14 is greater than the longitudinal length of the second bending plate 15.

[0029] By setting a transverse center bending line 11 in the center of the plate body 1, the symmetry of the structure is achieved and the stability of the installation is improved. The first bending plate 14 and the second bending plate 15 are set to different lengths. During installation, the stability of the fixed structure can be directly ensured by folding and installing the first bending plate 14 and the second bending plate 15 with different lengths without the need for additional supporting structure.

[0030] Preferably, the plate body 1 is made of insulating material. Since the fixed structure is applied to a transformer, using insulating material as the plate body 1 can improve the electrical safety performance of the transformer, prevent the risk of current leakage and short circuit, and ensure the long-term stable operation of the transformer.

[0031] Two first bending lines 16 symmetrical to each other along the longitudinal center line are longitudinally provided on the first cover plate 12, the first bending plate 14 is bent along the first bending line 16, and the two first bending plates 14 are extended toward the outside, and two second bending lines 17 symmetrical to each other along the longitudinal center line are longitudinally provided on the second cover plate 13, the second bending plate 15 is bent along the second bending line 17, and the two second bending plates 15 are extended toward the outside.

[0032] By providing symmetrical first and second bending lines 16 and 17 on the first cover plate 12 and the second cover plate 13 and extending the outer sides of the bending plates, the mechanical stability of the structure can be enhanced. The first bending plate 14 and the second bending plate 15 are respectively buckled on both sides of the winding 2 in the transformer. The distance between the two bending plates is preferably the thickness of the winding 2, or slightly larger than the thickness of the winding 2.

[0033] Preferably, the extensions of the first bending line 16 and the second bending line 17 on the same side are arranged to coincide with each other. This arrangement simplifies the installation and positioning process, improves assembly accuracy, makes the fixed structure more compact and unified, reduces assembly errors, and enhances the overall coordination and aesthetics of the structure.

[0034] Two first mounting holes 18 are defined on the center bend line, and two second mounting holes 19 are defined on the second cover plate 13, corresponding to the two first mounting holes 18. The first mounting holes 18 are used to pass through the protruding end of the terminal block of the terminal block, while the second mounting holes 19 are used to expose the input end of the terminal block for connection to the wire of winding 2.

[0035] Preferably, the two first mounting holes 18 and the two second mounting holes 19 are correspondingly arranged on the extension lines of the two first bending lines 16. The first mounting holes 18 and the second mounting holes 19 are correspondingly arranged on the extension lines of the bending lines. This layout optimizes force distribution, ensures uniform force transmission during tightening, avoids local stress concentration, and improves the durability and stability of the structure.

[0036] The ends of the first bent plate 14 and the second bent plate 15 are both arranged beyond the edges of the plate body 1. The arrangement of the ends of the first bent plate 14 and the second bent plate 15 beyond the edges of the plate body 1 increases the contact area between the fixing structure and the winding 2, further improving the stability of the fixing structure, and also facilitating the fixing and wrapping of cable ties or tape, thereby enhancing the overall fixing effect.

[0037] The first cover plate 12 is arranged to fit the winding 2 of the transformer, and the second cover plate 13 is folded upward along the central bending line 11 and covers the first cover plate 12 to form a fixed structure.

[0038] Furthermore, the fixing structure is wrapped with a first fixing belt 3 along the longitudinal centerline, and a second fixing belt 4 is wrapped around one end of the fixing structure where the first mounting hole 18 is provided. Specifically, the first fixing belt 3 and the second fixing belt 4 are commonly used fastening belts such as adhesive tape or cable ties.

[0039] This embodiment also provides a transformer, including a magnetic core and a winding 2 wound on the magnetic core, the winding 2 is installed with the transformer terminal board fixing structure as described above, and the first cover plate 12 of the transformer terminal board fixing structure is arranged in contact with the winding 2.

[0040] During installation, the terminal plate is installed in the first mounting hole 18 and the second mounting hole 19, the second cover plate 13 is folded upward along the center bending line 11 and covers the first cover plate 12, and then the fixing structure and the terminal plate are fastened by the first fixing belt 3 and the second fixing belt 4, and then the first cover plate 12 is adhered to the winding 2 to prevent, first bend the first bending plate 14 along the first bending line 16, adhere the first bending plate 14 to both sides of the winding 2, and then bend the second bending plate 15 along the second bending line 17, so that the second bending plate 15 covers the first bending plate 14, and finally use a fastening belt such as insulating tape or insulating binding tape to wrap the fixing structure and fix it to the winding 2.

Claims

1. A transformer terminal board fixing structure, comprising a board body (1), characterized in that: A central bending line (11) is transversely arranged in the central area of the plate body (1), and the central bending line (11) divides the plate body (1) into a first cover plate (12) and a second cover plate (13) of equal length in the longitudinal direction. Two first bending plates (14) symmetrical along the longitudinal center line are arranged on both sides of the first cover plate (12), and two second bending plates (15) symmetrical along the longitudinal center line are arranged on both sides of the second cover plate (13). The longitudinal length of the first bending plate (14) is greater than the longitudinal length of the second bending plate (15).

2. The transformer terminal board fixing structure according to claim 1, characterized in that: The plate body (1) is made of insulating material.

3. The transformer terminal board fixing structure according to claim 1, characterized in that: The first cover plate (12) is longitudinally provided with two first bending lines (16) symmetrical to each other along the longitudinal center line, the first bending plate (14) is bent along the first bending line (16), and the two first bending plates (14) are both extended outwards, and the second cover plate (13) is longitudinally provided with two second bending lines (17) symmetrical to each other along the longitudinal center line, the second bending plate (15) is bent along the second bending line (17), and the two second bending plates (15) are both extended outwards.

4. The transformer terminal board fixing structure according to claim 3, characterized in that: The extension lines of the first bending line (16) and the second bending line (17) on the same side are arranged to overlap.

5. The transformer terminal board fixing structure according to claim 4, characterized in that: Two first mounting holes (18) are formed on the central bending line (11), and two second mounting holes (19) are formed on the second cover plate (13) corresponding to the two first mounting holes (18).

6. The transformer terminal board fixing structure according to claim 5, characterized in that: The two first mounting holes (18) and the two second mounting holes (19) are correspondingly arranged on the extension lines of the two first bending lines (16).

7. The transformer terminal board fixing structure according to claim 3, characterized in that: The ends of the first bent plate (14) and the second bent plate (15) are both arranged beyond the two side edges of the plate body (1).

8. The transformer terminal board fixing structure according to claim 1, characterized in that: The first cover plate (12) is arranged to fit the winding (2) of the transformer, and the second cover plate (13) is folded upward along the central bending line (11) and covers the first cover plate (12) to form a fixed structure.

9. The transformer terminal board fixing structure according to claim 8, characterized in that: A first fixing belt (3) is wound around the fixing structure along a longitudinal center line, and a second fixing belt (4) is wound around one end of the fixing structure where a first mounting hole (18) is provided.

10. A transformer comprising a magnetic core and a winding (2) wound around the magnetic core, characterized in that: The transformer terminal plate fixing structure according to any one of claims 1 to 9 is installed on the winding (2), and the first cover plate (12) of the transformer terminal plate fixing structure is arranged in contact with the winding (2).

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