CN213400814U

CN213400814U - Lower iron core arm-tie structure of temperature rise and have its transformer

Info

Publication number: CN213400814U
Application number: CN202022787846.8U
Authority: CN
Inventors: 李子兴; 刘政道; 孙佳忠; 王昊新
Original assignee: Changzhou Xd Transformer Co ltd; China XD Electric Co Ltd
Current assignee: Changzhou Xd Transformer Co ltd; China XD Electric Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-06-08
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a lower arm-tie structure unshakable in one's determination of temperature rise, including the metal sheet, the metal sheet is provided with a plurality of, and a plurality of metal sheet stacks to be connected and connect through the face between the adjacent metal sheet, and the side and the contact unshakable in one's determination of just every metal sheet are connected to a plurality of metal sheet and unshakable in one's determination. The utility model discloses a stacked structure of a plurality of can help the arm-tie of unshakable in one's determination to dispel the heat fast to reduce the temperature rise of the arm-tie unshakable in one's determination, reduce near insulating oil schizolysis, thereby reduced the potential safety hazard of transformer, be favorable to the transformer design very much. The method is suitable for large power transformers with similar structures.

Description

Lower iron core arm-tie structure of temperature rise and have its transformer

Technical Field

The utility model belongs to the technical field of power transformer, specifically belong to the lower iron core arm-tie structure of temperature rise and have its transformer.

Background

In a power transformer, a core pulling plate is required to fix a core. And there is the magnetic leakage between iron core and the coil, when the magnetic leakage is through the iron core arm-tie, because the material of making the iron core arm-tie is the monoblock steel sheet, can produce a large amount of eddy current losses, finally leads to the temperature rise of iron core arm-tie. In the case of a transformer with a small capacity, the magnitude of the temperature increase is not very large. However, when the capacity of the transformer is increased, particularly a generator transformer, the temperature rise of the iron core pulling plate is particularly high, so that nearby insulating oil is cracked, a large amount of harmful gas is generated, and the safe operation of the transformer is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art, the utility model provides a lower iron core structure of temperature rise and have its transformer solves the great problem of present iron core arm-tie temperature rise.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a lower iron core arm-tie structure of temperature rise, includes the metal sheet, the metal sheet is provided with a plurality of, and a plurality of metal sheet is folded and is connected and connect through the face between the adjacent metal sheet, and a plurality of metal sheet and iron core are connected and the side and the contact of iron core of every metal sheet.

Furthermore, the plate surfaces of the adjacent metal plates are connected through cementing.

Furthermore, the metal plates and the iron cores are bound and connected through binding bands.

Furthermore, both ends of the metal plate are connected with reinforcing members.

Furthermore, the metal plate is a silicon steel sheet plate.

Further, the reinforcing member is a steel structure end seat.

Furthermore, the steel structure end seat and each metal plate are connected by welding.

The utility model also provides a transformer, including coil and the lower arm-tie structure unshakable in one's determination of foretell temperature rise, coil and the arm-tie structure interval that unshakable in one's determination set up, the arm-tie structure that unshakable in one's determination is located between unshakable in one's determination and the coil.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the utility model provides a lower arm-tie structure unshakable in one's determination of temperature rise, constitute the arm-tie structure unshakable in one's determination through a plurality of range upon range of metal sheet, the structure of adopting the monoblock metal sheet at present and adopt the steel sheet has been abandoned, the steel sheet has been solved and a large amount of turbine losses can be produced, the arm-tie temperature rise of unshakable in one's determination can high problem very much, and the monoblock metal sheet is installed and is dispelled the relatively poor problem of heat on unshakable in one's determination, the heat dissipation of arm-tie has been increased through the range upon range of metal sheet of a plurality of, even the material of arm-tie is for leading to the temperature rise when higher easily, the arm-tie fast heat dissipation can be helped to the range upon range of a. The method is suitable for large power transformers with similar structures.

Furthermore, the adjacent metal plates are directly connected conveniently and quickly through adhesive binding, and the metal plates and the iron cores are connected through binding bands, so that the installation is convenient, and the overhaul is convenient.

Further, the metal sheet is through adopting the silicon steel sheet board, because the magnetic permeability of silicon steel sheet is high, is higher than ordinary steel sheet far away, thereby the eddy current loss of production is very little, and the temperature rise of the arm-tie unshakable in one's determination is very low, guarantees the stable safe operation of the arm-tie unshakable in one's determination, and is similar to the lower material of this kind of intensity of silicon steel sheet board, can increase the intensity of the arm-tie unshakable in one's determination through a plurality of layers of stacked structure, guarantees the steady operation of the arm-tie unshakable in one's determination, simultaneously, the utility model discloses at the both ends welded reinforcement steel sheet structure of silicon steel sheet, can further ensure the intensity of the arm-tie unshakable in one's determination, and the.

Drawings

FIG. 1 is a schematic diagram of a transformer body structure;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a left side view of the structure of FIG. 2;

FIG. 4 is a schematic view of a core and core tie plate binding arrangement;

in the drawings: 1-iron core pulling plate, 2-iron core, 3-metal plate, 4-reinforcing member, 5-binding band and 6-coil.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, the utility model provides a lower arm-tie structure unshakable in one's determination of temperature rise, including metal sheet 3, metal sheet 3 is provided with a plurality of, connects through the face between 3 range upon range of connections of a plurality of metal sheet and the adjacent metal sheet 3, and a plurality of

metal sheet

3 and 2 connection unshakable in one's determination 2 and the side of every metal sheet 3 and the contact of unshakable in one's determination 2.

Specifically, as shown in fig. 2 and 3, the core pulling plate 1 is formed by laminating a plurality of metal plates 3, each metal plate 3 is connected by glue, the plate surfaces of the adjacent metal plates 3 are connected, the plurality of metal plates 3 are laminated and then installed on the iron core 2, one side surface of each metal plate 3 is in contact with the iron core 2, the core pulling plate 1 and the iron core 2 are installed together and then arranged on the transformer body to form a transformer in cooperation with a coil, wherein the coil 6 and the core pulling plate 1 are arranged at intervals, the core pulling plate structure is located between the iron core 2 and the coil 6, and the iron core 2, the core pulling plate 1 and the coil 6 are sequentially arranged from the inner diameter side to the outer diameter side of the transformer body.

As shown in fig. 4, in this embodiment, the iron core pulling plate 1 and the iron core 2 are bound and connected by using a plurality of binding bands 5, the plurality of binding bands 5 are a group to bind the iron core pulling plate 1 and the iron core 2, and the binding bands 5 of each group are arranged at equal intervals.

Preferably, the metal plate 3 is a silicon steel sheet plate, and compared with the conventional iron core pulling plate 1 of a steel plate, the magnetic permeability of the steel plate is very low, so that a large amount of eddy current loss is generated. Through adopting the utility model discloses an iron core arm-tie 1 of silicon steel sheet board utilizes the magnetic permeability high performance of silicon steel sheet, is higher than ordinary steel sheet far away to the eddy current loss of production is very little, and the temperature rise of iron core arm-tie 1 is very low, makes the utility model discloses the effectual temperature rise that reduces iron core arm-tie 1, thereby has reduced the potential safety hazard of transformer, is favorable to the transformer design very much. The method is suitable for large power transformers with similar structures.

In this embodiment, because the less condition of intensity of silicon steel sheet edition can pass through the utility model discloses a plurality of layers of stacked structure compensate, increase the intensity of the arm-tie unshakable in one's determination that silicon steel sheet board constitutes when improving the heat-sinking capability of arm-tie 1 unshakable in one's determination, moreover, the both ends of silicon steel sheet board still all are provided with reinforcement 4, and preferred reinforcement 4 is the steel construction end seat, the terminal surface welded connection of steel construction end seat and every silicon steel sheet board.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The iron core pulling plate structure with lower temperature rise is characterized by comprising metal plates (3), wherein the metal plates (3) are provided with a plurality of metal plates (3), the metal plates (3) are connected in a stacking mode and adjacent metal plates (3) are connected through a plate surface, the metal plates (3) are connected with an iron core (2), and the side surface of each metal plate (3) is in contact with the iron core (2).

2. A core puller structure with lower temperature rise as set forth in claim 1, characterized in that the plate faces of adjacent metal plates (3) are connected by gluing.

3. A core puller structure with lower temperature rise as set forth in claim 1, c h a r a c t e r i z e d in that the number of metal plates (3) and the core (2) are bound together by means of binding bands (5).

4. A lower temperature rise core puller structure as set forth in claim 1, wherein said metal plate (3) is connected at both ends with reinforcing members (4).

5. A core puller structure with low temperature rise as set forth in claim 4, characterized in that said metal plate (3) is a silicon steel sheet.

6. A lower temperature rise core puller plate structure as set forth in claim 4, wherein said reinforcement members (4) are steel structural end mounts.

7. A lower temperature rise core puller plate structure as set forth in claim 6, wherein said steel structural end mounts and each of said metal plates (3) are welded together.

8. A transformer, characterized in that it comprises a coil and a core pulling plate structure with a low temperature rise according to any of claims 1-7, said coil (6) and core pulling plate structure being arranged at a distance, said core pulling plate structure being located between the core (2) and the coil (6).