CN209912691U

CN209912691U - Improved transformer iron core structure

Info

Publication number: CN209912691U
Application number: CN201920857050.XU
Authority: CN
Inventors: 周佳文; 韩成云; 伦臣芳; 陈春龙
Original assignee: Jiangsu Jinjia Iron Core Co Ltd
Current assignee: Jiangsu Jinjia Iron Core Co Ltd
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-01-07
Anticipated expiration: 2029-06-10

Abstract

The utility model discloses an improved generation transformer core structure relates to transformer core technical field. The utility model comprises a clamping frame, wherein a transformer iron core group is movably connected between the opposite surfaces of the clamping frame; the transformer iron core group comprises transformer iron chips; the peripheral side surface of the transformer iron chip is fixedly connected with radiating fins; two positioning grooves, two groups of heat dissipation holes and a plurality of mounting holes are respectively formed in one surface of the transformer iron chip; the inner wall of the positioning groove is connected with a heat dissipation frame in a sliding manner. The iron core structure used by the utility model is formed by splicing and assembling a plurality of silicon steel sheets in a shape like the Chinese character 'kou' with the same structure, and is matched with the clamping frame, thereby facilitating the whole installation and fixation operation of the iron core; simultaneously transformer iron core piece structurally cooperates louvre and the fin that has the array to arrange, through this kind of structure, effectively improves ventilation cooling effect from the iron core both sides, effectively promotes the heat dispersion of transformer iron core piece body then.

Description

Improved transformer iron core structure

Technical Field

The utility model belongs to the technical field of transformer core, especially, relate to an improved generation transformer core structure.

Background

The iron core is the main magnetic circuit part in the transformer; usually, the silicon steel sheet is formed by stacking hot-rolled or cold-rolled silicon steel sheets which have higher silicon content and are coated with insulating paint on the surfaces; the iron core and the coil wound on the iron core form a complete electromagnetic induction system; the size of power transformer transmission power depends on the material and the cross-sectional area of iron core, and the silicon steel sheet is used for low frequency transformer, and its kind is many, can divide into according to its shape difference: EI-type, UI-type, C-type and mouth-type silicon steel sheets are usually used in transformers with high power, have good insulating property and short magnetic circuit, and are mainly used for transformers with power of more than 500-1000W and high power.

The transformer iron core is usually fastened into a whole by four screws after being laminated, and the screws and nuts are manually fastened by a screwdriver, so that the fixing mode is simple, heat dissipation measures for the transformer iron core are lacked, and the transformer iron core is easy to generate heat during use, so that the transformer iron core is damaged; the CN201811537594.4 patent publication number is CN201811537594.4, which provides a structure to solve the above problems, but the cooling method of the middle structure is only limited to external forced air cooling, and the transformer core itself lacks a proper heat dissipation structure, which is then limited in improving the heat dissipation performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improved generation transformer core structure, through the design of transformer core piece, fin, louvre and holding ring and locating hole, solved the relatively poor problem of current transformer core structure thermal diffusivity.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to an improved transformer iron core structure, which comprises a clamping frame, wherein a transformer iron core group is movably connected between the opposite surfaces of the clamping frame; the transformer iron core group comprises transformer iron chips;

the peripheral side surface of the transformer iron chip is fixedly connected with radiating fins; two positioning grooves, two groups of heat dissipation holes and four mounting holes are respectively formed in one surface of the transformer iron chip; the inner wall of the positioning groove is connected with a heat dissipation frame in a sliding manner; a positioning hole is formed in one surface, away from the mounting hole, of the transformer iron chip; one end of the positioning hole is communicated with the mounting hole; a positioning ring is fixedly connected to one surface of the transformer iron chip; the peripheral side surface of the positioning ring is matched with the positioning hole.

Further, the heat dissipation holes are T-shaped holes; the heat dissipation holes are distributed on one surface of the transformer iron chip in a linear array; the two groups of heat dissipation holes are symmetrically distributed by taking the center line of the transformer iron chip as a symmetry axis.

Furthermore, four first threaded rods penetrate through one surface of the clamping frame respectively; four second threaded rods penetrate through one surface of the clamping frame from the mounting hole; the second threaded rod is positioned on the inner side of the first threaded rod; and the peripheral side surfaces of the second threaded rod and the first threaded rod are in threaded connection with locking nuts.

Furthermore, two cooling fans are arranged inside the cooling frame.

Furthermore, the transformer iron chip and the radiating fins are of a square structure with round corners; the cross section of the positioning groove is of a trapezoidal structure.

Furthermore, the four mounting holes are distributed on one surface of the transformer iron chip in a rectangular array; the axial leads of the mounting hole, the positioning hole and the positioning ring are the same.

The utility model discloses following beneficial effect has:

1. the iron core structure used by the utility model is formed by splicing and assembling a plurality of silicon steel sheets in a shape like the Chinese character 'kou' with the same structure, and is matched with the clamping frame, thereby facilitating the whole installation and fixation operation of the iron core; simultaneously transformer iron core piece structurally cooperates louvre and the fin that has the array to arrange, through this kind of structure, effectively improves ventilation cooling effect from the iron core both sides, effectively promotes the heat dispersion of transformer iron core piece body then.

2. The utility model discloses a design of mounting hole, locating hole and holding ring can fix a position when transformer iron core piece closed assembly through the block structure, promotes the closed assembly efficiency and the location effect of transformer iron core piece then.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an improved transformer core structure;

FIG. 2 is a schematic structural diagram of an iron core set of a transformer;

FIG. 3 is a schematic structural diagram of a transformer core plate;

FIG. 4 is a schematic view of the front view structure of FIG. 3;

in the drawings, the components represented by the respective reference numerals are listed below:

1-clamping frame, 2-transformer iron core group, 3-heat dissipation frame, 101-first threaded rod, 102-second threaded rod, 103-locking nut, 201-transformer iron chip, 202-heat dissipation fin, 203-positioning groove, 204-heat dissipation hole, 205-mounting hole, 206-positioning hole and 207-positioning ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention relates to an improved transformer core structure, which includes a clamping frame 1, wherein a transformer core assembly 2 is movably connected between opposite surfaces of the clamping frame 1; the transformer iron core group 2 comprises a transformer iron core sheet 201;

the peripheral side surface of the transformer iron chip 201 is fixedly connected with a radiating fin 202; the radiating fins 202 and the transformer iron chip 201 are of an integrated structure; is made by punching; the radiating fin 202 is positioned in the middle of the transformer chip 201; the whole thickness of the transformer is one third of that of the transformer iron chip 201; two positioning grooves 203, two groups of heat dissipation holes 204 and four mounting holes 205 are respectively formed on one surface of the transformer iron chip 201; the inner wall of the positioning groove 203 is connected with a heat dissipation frame 3 in a sliding manner; a positioning hole 206 is formed in one surface of the transformer iron chip 201 away from the mounting hole 205; one end of the positioning hole 206 is communicated with the mounting hole 205; a positioning ring 207 is fixedly connected to one surface of the transformer iron chip 201; the peripheral side surface of the positioning ring 207 is matched with the positioning hole 206; the positioning ring 207 is engaged with the positioning hole 206 at its peripheral side.

As shown in fig. 1-4, the heat dissipation holes 204 are T-shaped holes; the heat dissipation holes 204 form heat dissipation channels from the inner side through the T-shaped structure; the heat sink 202 forms a heat dissipation channel from the outside; the heat dissipation holes 204 are distributed in a linear array on one surface of the transformer iron chip 201; the two sets of heat dissipation holes 204 are symmetrically distributed with the center line of the transformer core 201 as the symmetry axis.

Wherein, four first threaded rods 101 respectively penetrate through one surface of the clamping frame 1; four second threaded rods 102 penetrate through the mounting hole 205 on one surface of the clamping frame 1; the second threaded rod 102 is located inside the first threaded rod 101; lock nuts 103 are screwed to the circumferential side surfaces of the second threaded rod 102 and the first threaded rod 101.

Wherein, two heat radiation fans are arranged inside the heat radiation frame 3; the heat dissipation fan is used for forced air cooling.

Wherein, the transformer iron chip 201 and the heat sink 202 are both in a square structure with round corners; the cross section of the positioning groove 203 is of a trapezoidal structure; the positioning groove 203 is provided to facilitate positioning of the transformer core pieces 201 during stacking.

The four mounting holes 205 are distributed on one surface of the transformer iron chip 201 in a rectangular array; the axes of the mounting hole 205, the positioning hole 206 and the positioning ring 207 are the same; the depth ratio of the mounting hole 205 to the positioning hole 206 is 5: 1; the diameter of the positioning hole 206 is larger than that of the mounting hole 205, and the thickness of the positioning hole 206 is the same as that of the positioning ring 207, so that clamping is convenient; the diameter of the positioning ring 207 is slightly smaller than that of the positioning hole 206.

One specific application of this embodiment is: the iron core structure is formed by splicing and assembling a plurality of square transformer iron chips 201 with the same structure, and is matched with the clamping frame 1, so that the transformer iron chips 201 are conveniently and integrally installed and fixed; meanwhile, the transformer iron chip 201 is structurally matched with the T-shaped heat dissipation holes 204 and the square-shaped heat dissipation fins 202 which are arranged in an array mode, through the structure, the ventilation and heat dissipation effects are effectively improved from two sides of the transformer iron chip 201, and then the heat dissipation performance of the transformer iron chip 201 body is effectively improved; wherein when the concatenation installation, location hole 206 and holding ring 207 fix a position when transformer core 201 piece closed assembly through the block structure, promote the closed assembly efficiency and the location effect of transformer core piece 201 then.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An improved transformer iron core structure comprises a clamping frame (1), wherein a transformer iron core group (2) is movably connected between opposite surfaces of the clamping frame (1); the transformer iron core group (2) comprises a transformer iron chip (201); the method is characterized in that:

the peripheral side surface of the transformer iron chip (201) is fixedly connected with a radiating fin (202); two positioning grooves (203), two groups of heat dissipation holes (204) and a plurality of mounting holes (205) are respectively formed in one surface of the transformer iron chip (201); the inner wall of the positioning groove (203) is connected with a heat dissipation frame (3) in a sliding manner; a positioning hole (206) is formed in one surface, far away from the mounting hole (205), of the transformer iron chip (201); one end of the positioning hole (206) is communicated with the mounting hole (205); a positioning ring (207) is fixedly connected to one surface of the transformer iron chip (201); the peripheral side surface of the positioning ring (207) is matched with the positioning hole (206).

2. The improved transformer core structure of claim 1, wherein said heat dissipation holes (204) are T-shaped holes; the heat dissipation holes (204) are distributed on one surface of the transformer iron chip (201) in a linear array; the two groups of heat dissipation holes (204) are symmetrically distributed by taking the center line of the transformer iron chip (201) as a symmetry axis.

3. An improved transformer core structure according to claim 1, characterized in that a plurality of first threaded rods (101) are respectively penetrated through one surface of the clamping frame (1); a plurality of second threaded rods (102) penetrate through the surface of the clamping frame (1) from the mounting hole (205); the second threaded rod (102) is positioned inside the first threaded rod (101); and locking nuts (103) are connected to the peripheral side surfaces of the second threaded rod (102) and the first threaded rod (101) in a threaded manner.

4. An improved transformer core structure according to claim 1, characterized in that two cooling fans are arranged inside said cooling frame (3).

5. The improved transformer core structure according to claim 1, wherein the transformer core pieces (201) and the heat radiating fins (202) are of a square-shaped structure with round corners; the cross section of the positioning groove (203) is of a trapezoidal structure.

6. The improved transformer core structure of claim 1, wherein a plurality of said mounting holes (205) are distributed in a rectangular array on a surface of said transformer core piece (201); the axial lines of the mounting hole (205), the positioning hole (206) and the positioning ring (207) are the same.