CN221352528U

CN221352528U - Adjustable transformer core

Info

Publication number: CN221352528U
Application number: CN202323498538.3U
Authority: CN
Inventors: 樊泽轩; 聂晓星
Original assignee: Hebei Jijixuan Transformer Co ltd
Current assignee: Hebei Jijixuan Transformer Co ltd
Priority date: 2023-12-21
Filing date: 2023-12-21
Publication date: 2024-07-16
Anticipated expiration: 2033-12-21

Abstract

The application relates to the technical field of transformer cores, in particular to an adjustable transformer core; the application provides an adjustable transformer iron core, which comprises a core body formed by stacking silicon steel sheets, and also comprises a frame, wherein the frame is symmetrically arranged at the upper end and the lower end of the outer side of the core body and is used for clamping and fixing the core body; the adjusting piece is arranged between the frames and is used for elastically connecting the frames; the restraint piece is arranged between the frames and is used for positioning and limiting the core body; because the transformer iron core is provided with the adjusting piece and the restraining piece, the elastic connection between the frames can be realized through the adjusting piece, so that an expansion space is provided for the heated and expanded core body, and the core body and the frames can be effectively positioned and connected through the restraining piece, so that the problem that the normal use of the transformer is affected by the permanent deformation of the silicon steel sheet due to the fact that the silicon steel sheet is free to deform after the transformer iron core is heated in working engineering in the prior art is solved.

Description

Adjustable transformer core

Technical Field

The application relates to the technical field of transformer cores, in particular to an adjustable transformer core.

Background

In the prior art, the transformer iron core is a main magnetic circuit part in the transformer and consists of silicon steel sheets and a frame which are mutually stacked, and the iron core can generate more heat in the working process of the transformer so as to cause the expansion operation of the silicon steel sheets, however, the frame which has binding effect on the silicon steel sheets can cause free deformation of the silicon steel sheets without binding due to the lack of a compensation adjusting structure, so that the situation that the normal use of the transformer is influenced by the permanent deformation of the silicon steel sheets is easily caused.

Disclosure of utility model

The application aims to solve the problems that the prior transformer iron core is heated in the working engineering, and the silicon steel sheet can be free to deform unconstrained due to the lack of a compensation adjusting structure, so that the permanent deformation of the silicon steel sheet is easy to cause to influence the normal use of the transformer.

In order to solve the technical problems, the application provides an adjustable transformer iron core, which comprises a core body formed by stacking silicon steel sheets, and also comprises

The frames are symmetrically arranged at the upper end and the lower end of the outer side of the core body and are used for clamping and fixing the core body;

The adjusting piece is arranged between the frames and is used for elastically connecting the frames;

and the restraint piece is arranged between the frames and is used for positioning and limiting the core body.

Because the transformer iron core is provided with the adjusting piece and the restraining piece, the elastic connection between the frames can be realized through the adjusting piece, so that an expansion space is provided for the heated and expanded core body, and the core body and the frames can be effectively positioned and connected through the restraining piece, so that the problem that the normal use of the transformer is affected by the permanent deformation of the silicon steel sheet due to the fact that the silicon steel sheet is free to deform after the transformer iron core is heated in working engineering in the prior art is solved.

Drawings

Fig. 1 is a schematic perspective view of an embodiment.

Fig. 2 is a schematic diagram of the front view structure of the embodiment.

Fig. 3 is a schematic side view of an embodiment.

Fig. 4 is a schematic top view of an embodiment.

FIG. 5 is a schematic view of a through slot, restraint structure.

Fig. 6 is a schematic structural view of the through slot and the adjusting member.

Fig. 7 is a schematic view of the structure of the boss and the pull plate.

Fig. 8 is a schematic diagram of the structure at a in fig. 7.

In the figure: 1. a frame; 2. a core; 3. a restraint; 4. an adjusting member; 5. a through groove; 6. bracing; 7. a bolt; 8. a protrusion; 9. pulling a plate; 10. a pull rod; 11. and a tension spring.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Examples

The application relates to an adjustable transformer core, as shown in figures 1-8, which comprises a core body 2 formed by stacking silicon steel sheets, wherein the upper end and the lower end of the outer side of the core body 2 are symmetrically provided with a frame 1 which is detachably connected with the core body for clamping and fixing the core body, and in order to not only assist in fixing the core body 2, but also effectively limit the core body when the core body is deformed due to thermal expansion, an adjusting piece 4 for elastic connection is arranged between the frame 1, and in order to prevent the core body 2 from being separated from the frame 1 or dislocated, a restraint piece 3 for positioning and limiting the core body 2 is uniformly arranged between the frame 1.

In order to enable the frames 1 to be uniformly stressed and simultaneously have a stable limiting effect on the silicon steel sheets arranged in the vertical direction, the number of the adjusting pieces 4 is two, each group is three, and the adjusting pieces are uniformly arranged on the outer surfaces of the silicon steel sheets arranged in the vertical direction and form stable connection with the frames 1.

The adjusting piece 4 comprises pull plates 9, pull rods 10 and tension springs 11, in order to realize the compensation adjusting function, therefore, the number of the pull plates 9 is two, the pull plates 9 are symmetrically arranged between the frames 1, the end parts of the pull plates 9 are connected with the frames 1, the tail parts of the pull plates 9 are connected through the pull rods 10 with adjustable intervals, in order to facilitate the assembling and disassembling operation of the pull rods 10, the pull rods 10 are threaded rods with detachable nuts at two ends, so that the pull rods 10 can be in the movable stroke of the threaded rods, the deformation stretching operation of the silicon steel sheets in the vertical direction after being heated is assisted, the silicon steel sheets can have proper deformation space after being heated, and because the pull plates 9 and the pull rods 10 are of rigid structures, in order to prevent the movement difference between the pull plates 9, the tension springs 11 with elastic connecting function are symmetrically arranged at two sides of the pull rods 10, and the pull plates 9 can form elastic connection in the movable stroke of the pull rods 10 by means of the action of the tension springs 11.

In order to further improve the adjusting capability of the adjusting piece 4, therefore, the end part of the pull rod 10 is additionally provided with a protrusion 8 protruding outwards, and a through groove 5 matched with the protrusion 8 is arranged at a corresponding position on the upper part of the frame 1, so that the protrusion 8 has proper moving capability in the through groove 5, and the through groove 5 has a water drop-shaped structure with wide upper part and narrow lower part, so that the protrusion 8 has small moving capability on the upper half part of the through groove 5.

The restraint 3 includes brace 6, bolt 7, and brace 6 sets up the lateral part at core 2, because the marginal position silicon steel sheet of core 2 is the high both sides low uplift structure in centre, consequently, brace 6's cross-sectional shape also is uplift structure, and in order to make things convenient for the handling operation of arm-tie 9, consequently, connect through detachable bolt 7 between brace 6's both ends and the bracket, in order to promote the constraint ability of restraint 3 to core 2, consequently, brace 6's quantity is two generally, adopts side by side arrangement mode to be connected with frame 1.

When the expansion device is used, the adjusting piece 4 and the restraining piece 3 are arranged between the frames 1, the restraining piece 3 prevents dislocation displacement between the core body 2 and the frames 1 through the action of the pull rod 6, after the core body 2 is heated and expanded, the pull plate 9 arranged outside the silicon steel sheets plays an effective limiting role on the core body 2 to prevent the core body from generating excessive expansion, in the vertical direction, due to the action of the pull rod 10 and the tension spring 11, a proper space for the expansion of the silicon steel sheets is arranged between the frames 1, the upper part of the frames 1 is additionally provided with the through groove 5 and the bulge 8 for further lifting the expansion space, the compensation quantity of the tension spring 11 can be adjusted according to the diameter, the material and the number of turns of the tension spring 11, and the transformation efficiency is influenced for preventing the excessive compensation of the core body 2, so that the compensation quantity is set to be 2-4 mm.

It will be understood that the application has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this application, but that the application will include all embodiments falling within the scope of the appended claims.

Claims

1. An adjustable transformer core, includes core (2) that is piled up by the silicon steel sheet, its characterized in that: and also comprises

The frames (1) are symmetrically arranged at the upper end and the lower end of the outer side of the core body (2) and are used for clamping and fixing the core body (2);

The adjusting piece (4) is arranged between the frames (1) and is used for elastically connecting the frames (1);

And the restraint piece (3) is arranged between the frames (1) and is used for playing a role in positioning and limiting the core body (2).

2. The conditioning transformer core of claim 1, wherein: the number of the adjusting parts (4) is two, each group is three, and the adjusting parts are uniformly arranged on the outer surface of the vertically arranged silicon steel sheet and form stable connection with the frame (1).

3. The conditioning transformer core of claim 1, wherein: the adjusting piece (4) comprises two pull plates (9) and pull rods (10), the pull plates (9) are symmetrically arranged between the frames (1), the end parts of the pull plates (9) are connected with the frames (1), and the tail parts of the pull plates (9) are connected through the pull rods (10) capable of adjusting the distance between the pull plates.

4. A conditioning transformer core according to claim 3, characterized in that: the pull rod (10) is a screw rod with detachable nuts at two ends.

5. A conditioning transformer core according to claim 3, characterized in that: the adjusting piece (4) further comprises tension springs (11), and the tension springs (11) with elastic connection function are symmetrically arranged on two sides of the pull rod (10) between the pull plates (9).

6. A conditioning transformer core according to claim 3, characterized in that: the end part of the pull rod (10) is provided with a protrusion (8) protruding outwards, and the upper part of the frame (1) is provided with a through groove (5) matched with the protrusion (8).

7. The conditioning transformer core of claim 6, wherein: the through groove (5) is in a water drop-shaped structure with a wide upper part and a narrow lower part.

8. The conditioning transformer core of claim 1, wherein: the restraint (3) comprises a brace (6) and bolts (7), the brace (6) is arranged on the side portion of the core body (2), and two ends of the brace (6) are connected with the brackets through the detachable bolts (7).

9. The conditioning transformer core of claim 8, wherein: the cross section of the brace (6) is of a raised structure with a high middle and two low sides.

10. The conditioning transformer core of claim 8, wherein: the number of the braces (6) is two, and the braces are connected with the frame (1) in a side-by-side arrangement mode.