CN217181959U

CN217181959U - Insulation structure of high-temperature-resistant oil-immersed transformer

Info

Publication number: CN217181959U
Application number: CN202123380508.3U
Authority: CN
Inventors: 张孟荷; 宋加春; 董永熠
Original assignee: Ztt Transformer Co ltd
Current assignee: Ztt Transformer Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-08-12
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a high temperature resistant oil-immersed transformer's insulation system, this high temperature resistant oil-immersed transformer's insulation system includes coil and iron core, it has the coil to wind between the iron core, space department between iron core and the coil is equipped with the iron yoke and insulates, wind on the iron core through the coil, then it is insulating to put into the iron yoke in space department between coil and iron core, then both sides set up the folder about the coil, and fix through laminated wood, it is insulating to install the top board again on the folder, install the casting die on the top board is insulating, and fluting on the top board is insulating, make things convenient for the coil oil duct to walk oil, good radiating effect has, the utility model discloses in, trompil on the top board is insulating, make things convenient for iron core department to walk oil, have good radiating effect, adopt four casting dies rather than a whole pressure structure, can make the oil inner loop more unobstructed.

Description

Insulation structure of high-temperature-resistant oil-immersed transformer

Technical Field

The utility model belongs to oil-immersed transformer field, concretely relates to high temperature resistant oil-immersed transformer's insulation system.

Background

The utility model discloses a high temperature resistant insulation structure based on oil-immersed transformer designs, heat-resisting grade F level (155 ℃), the insulation structure of transformer is the important component part of transformer, the insulation structure of transformer and used insulation material's reliability, direct influence to the reliability of transformer operation, direct influence to the transformer operation. The insulation of an oil-immersed transformer can be divided into internal insulation in oil and external insulation in air, wherein the internal insulation is aimed at the internal insulation in oil, the internal insulation can be divided into main insulation and longitudinal insulation, the main insulation is the insulation of each winding to the grounding part and other windings, and the longitudinal insulation is the insulation among turns, layers and line sections of the winding.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistant oil-immersed transformer's insulation system to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an insulation system of high temperature resistant oil-immersed transformer, this insulation system of high temperature resistant oil-immersed transformer includes coil and iron core, the coil has been around having connect between the iron core, the gap department between iron core and the coil is equipped with the iron yoke and insulates, both sides are pressed from both sides tightly through the folder about the coil, install laminated wood between folder and the coil, it is insulating to install the top board on the iron core, the casting die is installed to the insulating upside of top board, the side welding has the hanger plate on the folder, the laminated wood of upside is located between the folder and the coil of upside, the laminated wood of downside is located between folder and the coil of downside, laminated wood is symmetry from top to bottom.

As a further improvement, the upper pressing plate is provided with a through hole in an insulation way, and the upper pressing plate is provided with a hole in an insulation way, so that oil can be conveniently fed to the iron core, and the heat dissipation effect is good.

As a further improvement, the lower end of the upper iron yoke insulator is grooved.

As a further improvement, the upper iron yoke insulation and the upper pressure plate insulation are made of epoxy plates.

As further improvement, the casting die is provided with four casting dies, and four casting dies are adopted instead of a whole casting die structure, so that internal circulation of oil can be smoother.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses in, go up indisputable yoke insulating material and be the epoxy board, the lower extreme fluting, the fluting is in coil oil duct top, makes things convenient for the coil oil duct to walk oily, has good radiating effect, and the position is between coil and iron core simultaneously, has both strengthened the dielectric strength between coil and the iron core, has also strengthened the mechanical strength of transformer, has strengthened the anti short circuit ability of transformer. The transformer insulation structure created by the invention has the advantages of high temperature resistance, strong sudden short circuit resistance, simple and reasonable structure, good heat dissipation effect and obvious economic benefit.

The upper press plate is provided with the insulating upper hole, so that oil can be conveniently fed from the iron core, a good heat dissipation effect is achieved, and the oil internal circulation can be more smooth by adopting four pressing pieces instead of a whole pressing structure.

The insulation structure does not include a core and a coil, but separates the core and the coil, which would otherwise discharge, and laminated wood is also an insulation for separating the coil and the clip.

Drawings

Fig. 1 is a schematic view of the overall structure of the insulation structure of the high temperature resistant oil-immersed transformer of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1 according to the present invention;

fig. 3 is an insulated perspective view of the upper yoke according to the present invention.

In the figure: 1-coil, 2-upper iron yoke insulation, 3-casting die, 4-upper pressing plate insulation, 5-hanging plate, 6-clamping piece, 7-laminated wood and 8-iron core.

Detailed Description

The present invention will be further elucidated below with reference to the accompanying drawings and embodiments, it being understood that the following embodiments are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1-3, an insulation structure of a high temperature resistant oil-immersed transformer includes a coil 1 and an iron core 8, the coil 1 is wound between the iron cores 8, an upper yoke insulator 2 is disposed at a gap between the iron core 8 and the coil 1, upper and lower sides of the coil 1 are clamped by a clamp 6, a laminated wood 7 is installed between the clamp 6 and the coil 1, an upper press plate insulator 4 is installed on the iron core 8, a press piece 3 is installed on an upper side of the upper press plate insulator 4, and a hanger plate 5 is welded on an upper side of the clamp 6.

The upper pressing plate insulation 4 is provided with a through hole.

The lower end of the upper iron yoke insulator 2 is provided with a groove, the upper iron yoke is insulated, the laminated wood 7 is hidden inside the laminated wood 7 to be seen, and the upper iron yoke insulator and the lower iron yoke insulator are symmetrical.

The upper iron yoke insulator 2 and the upper pressure plate insulator 4 are made of epoxy plates.

Four pressing members 3 are provided.

The working principle is as follows: the insulating structure of the high-temperature-resistant oil-immersed transformer comprises a coil 1 and an iron core 8, wherein the coil 1 is wound between the iron cores 8, an upper iron yoke insulator 2 is arranged at a gap between the iron core 8 and the coil 1 and is wound on the iron core 8 through the coil 1, the upper iron yoke insulator 2 is placed in the gap between the coil 1 and the iron core 8, clamping pieces 6 are arranged on the upper side and the lower side of the coil 1 and are fixed through laminated wood 7, an upper pressing plate insulator 4 is arranged on the clamping pieces 6, a pressing piece 3 is arranged on the upper pressing plate insulator 4, and a groove is formed in the upper pressing plate insulator 4, so that oil can be conveniently drained from an oil duct, and a good heat dissipation effect is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents, and it is apparent that the described embodiments of the invention are merely some embodiments of the invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. The utility model provides a high temperature resistant oil-immersed transformer's insulation system which characterized in that: this insulation system of high temperature resistant oil-immersed transformer includes coil (1) and unshakable in one's determination (8), the wire-wound has between unshakable in one's determination (8) coil (1), the space department between unshakable in one's determination (8) and coil (1) is equipped with iron yoke insulation (2), both sides press from both sides tightly through folder (6) about coil (1), install laminated wood (7) between folder (6) and coil (1), install top board insulation (4) on unshakable in one's determination (8), casting die (3) are installed to top board insulation (4) upside, side welding has hanger plate (5) on folder (6).

2. The insulation structure of the high-temperature-resistant oil-immersed transformer according to claim 1, wherein: and the upper pressing plate insulator (4) is provided with a through hole.

3. The insulation structure of the high-temperature-resistant oil-immersed transformer according to claim 2, wherein: the lower end of the upper iron yoke insulator (2) is provided with a groove.

4. The insulation structure of the high-temperature-resistant oil-immersed transformer according to claim 3, wherein: the upper iron yoke insulator (2) and the upper pressure plate insulator (4) are made of epoxy plates.

5. The insulation structure of the high-temperature-resistant oil-immersed transformer according to claim 4, wherein: four pressing pieces (3) are arranged.