Transformer iron core assembly

Abstract

The utility model relates to the technical field of transformer iron cores, and discloses a transformer iron core assembly, the iron core assembly is arranged in an alternate lamination type structure, a main iron core block is formed by alternately laminating first silicon steel sheets and second silicon steel sheets, and an auxiliary iron core block is formed by alternately laminating flat edge silicon steel sheets and convex edge silicon steel sheets. Two groups of silicon steel sheets with structural differences are alternately laminated to form a core block structure, a main iron core block is formed by alternately laminating first silicon steel sheets and second silicon steel sheets, and a square notch formed in the outer edge part of each second silicon steel sheet is used for butting and embedding heat dissipation side plates, so that traceless butting mounting of the heat dissipation side plates is realized; the auxiliary iron core block is formed by alternately laminating the flat-edge silicon steel sheets and the convex-edge silicon steel sheets, and the heat dissipation notches are formed in the convex-edge sides of the convex-edge silicon steel sheets, so that the heat dissipation contact area between the iron core structure and the heat dissipation medium can be increased while the magnetic flux of the iron core is not influenced through the arrangement of the heat dissipation edge plates and the heat dissipation notches; and the heat dissipation efficiency and the working stability of the iron core can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of transformer core technology, specifically a transformer core assembly. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. It has functions such as voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization. It is an important piece of equipment in power supply. The main components of a transformer are the primary coil, the secondary coil, and the iron core. The iron core is the basic component of the transformer. Its main function is to provide the magnetic circuit and also to serve as the mounting frame. The magnetic conductor of the iron core is the magnetic circuit of the transformer. It converts the electrical energy of the primary circuit into magnetic energy, and then converts its own magnetic energy into electrical energy of the secondary circuit. It is the medium of energy conversion and plays a vital role in the operation of the transformer.

[0003] Due to the high-frequency magnetic field transformation during operation, a large amount of heat is generated at the iron core. To solve the heat dissipation problem, transformers often use liquid immersion heat dissipation. Traditional iron cores that do not retain magnetic flux often adopt a tightly pressed sheet structure. The external planar structure has a low contact conduction area with the heat dissipation medium, resulting in poor heat dissipation efficiency. Therefore, a transformer iron core assembly is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a transformer core assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a transformer core assembly, comprising a main core block, a secondary core block, and a heat dissipation side plate, wherein the secondary core block is fitted and installed against the inner end side of the main core block, and the heat dissipation side plate is fitted and butted onto the outer side of the main core block;

[0006] The main core block is composed of alternating stacked first silicon steel sheets and second silicon steel sheets. The outer edge of the second silicon steel sheet is provided with a square notch. The secondary core block is composed of alternating stacked flat-edged silicon steel sheets and convex-edged silicon steel sheets. The outer edge of the convex-edged silicon steel sheet is provided with a heat dissipation groove.

[0007] Preferably, both the first silicon steel sheet and the second silicon steel sheet are configured with an E-shaped structure, and the first silicon steel sheet and the second silicon steel sheet are fixedly attached and stacked in an alternating manner.

[0008] Preferably, the edges of the first and second silicon steel sheets are flush, and the square notch is opened through the middle of the outer edge of the second silicon steel sheet.

[0009] Preferably, the inner side of the heat dissipation side plate is fixedly fitted to the outer side of the main iron core block, and a mating insert is fixed on the inner side of the heat dissipation side plate. The mating insert corresponds to the distribution position of the square notch. After installation, the mating insert and the square notch are fitted together and installed.

[0010] Preferably, the outer side of the heat dissipation side plate is provided with heat dissipation fins, which are fixedly installed on the outer side of the heat dissipation side plate at equal intervals.

[0011] Preferably, both the flat-edged silicon steel sheet and the convex-edged silicon steel sheet are rectangular strip structures, and the flat-edged silicon steel sheet and the convex-edged silicon steel sheet are fixedly attached and stacked in an alternating manner.

[0012] Preferably, the outer edge of the aforementioned convex silicon steel sheet is protruding, and the heat dissipation slots are equidistantly opened through the upper part of the protruding portion of the convex silicon steel sheet.

[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0014] This core assembly adopts an alternating laminated structure, utilizing two sets of silicon steel sheets with structural differences to alternately stack and form a core block structure. The main core block is composed of alternating stacks of the first and second silicon steel sheets. The square notch on the outer edge of the second silicon steel sheet is used to mate and fit the heat dissipation side plate, achieving seamless installation of the heat dissipation side plate. The secondary core block is composed of alternating stacks of flat-edge and convex-edge silicon steel sheets, with heat dissipation slots provided on the convex side of the convex-edge silicon steel sheets. The placement of the heat dissipation side plate and the heat dissipation slots increases the heat dissipation contact area between the core structure and the heat dissipation medium without affecting the magnetic flux of the core, effectively improving the heat dissipation efficiency and operational stability of the core. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall installation three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the front structure of the heat dissipation side plate of this utility model.

[0018] Figure 3 This is a schematic diagram of the rear structure of the heat dissipation side plate of this utility model.

[0019] Figure 4 This is a schematic diagram of the front structure of the silicon steel sheet assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the rear structure of the silicon steel sheet assembly of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Main iron core block; 11. First silicon steel sheet; 12. Second silicon steel sheet; 121. Square notch; 2. Secondary iron core block; 21. Flat-edged silicon steel sheet; 22. Convex-edged silicon steel sheet; 221. Heat dissipation slot; 3. Heat dissipation side plate; 31. Heat dissipation fins; 32. Connecting insert. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] Example

[0025] Please see Figure 1-5 This utility model provides a technical solution: a transformer core assembly, including a main core block 1, a secondary core block 2, and a heat dissipation side plate 3. Both the main core block 1 and the secondary core block 2 are configured with a stacked structure. Specifically:

[0026] The main core block 1 is composed of alternating layers of first silicon steel sheet 11 and second silicon steel sheet 12, as shown in the attached figure. Figure 4 As shown, both the first silicon steel sheet 11 and the second silicon steel sheet 12 are E-shaped structures. Both the first silicon steel sheet 11 and the second silicon steel sheet 12 are made of silicon steel. The first silicon steel sheet 11 and the second silicon steel sheet 12 are arranged alternately, and are fixed and stacked together with adhesive to form an integrated magnetic conductive structure.

[0027] The secondary core block 2 is composed of alternating layers of flat-edged silicon steel sheets 21 and convex-edged silicon steel sheets 22, as shown in the attached figure. Figure 5As shown, both the flat-edge silicon steel sheet 21 and the convex-edge silicon steel sheet 22 are rectangular strip structures. Both the flat-edge silicon steel sheet 21 and the convex-edge silicon steel sheet 22 are made of silicon steel. The flat-edge silicon steel sheet 21 and the convex-edge silicon steel sheet 22 are arranged alternately and are fixed and stacked with adhesive to form an integrated magnetic conductive structure. The auxiliary iron core block 2 is attached to the inner end of the main iron core block 1 to form a combined magnetic conductive working structure.

[0028] After installation, the edges of the first silicon steel sheet 11 and the second silicon steel sheet 12 are flush. To facilitate the connection and installation of the heat dissipation side plate 3, see attached... Figure 2 As shown, a square notch 121 is provided on the outer edge of the second silicon steel sheet 12. The square notch 121 is opened through the middle of the outer side of the second silicon steel sheet 12. The inner side of the heat dissipation plate 3 is fixedly glued to the outer side of the main iron core block 1. In order to facilitate heat conduction and installation positioning, as shown in the attached figure. Figure 3 As shown, a mating insert 32 is fixed on the inner side of the heat dissipation side plate 3. The mating insert 32 corresponds to the distribution position of the square notch 121. After installation, the mating insert 32 and the square notch 121 are fitted together and installed. The square notch 121 set on the outer side of the second silicon steel sheet 12 is used to fit and connect the heat dissipation side plate 3, so as to achieve seamless mating installation of the heat dissipation side plate 3. In order to improve the heat dissipation efficiency, heat dissipation fins 31 are provided on the outer side of the heat dissipation side plate 3. The heat dissipation fins 31 are fixedly installed on the outer side of the heat dissipation side plate 3 in an equidistant manner.

[0029] To facilitate heat conduction and dissipation, as shown in the attached document. Figure 5 As shown, the outer edge of the convex silicon steel sheet 22 is protruding. In order to increase the heat dissipation conduction area, a heat dissipation slot 221 is provided on the outer edge of the convex silicon steel sheet 22. The heat dissipation slot 221 is equidistantly opened through the upper part of the protruding part of the convex silicon steel sheet 22. The arrangement of the heat dissipation side plate 3 and the heat dissipation slot 221 can increase the heat dissipation contact area between the iron core structure and the heat dissipation medium without affecting the magnetic flux of the iron core, which can effectively improve the heat dissipation efficiency and working stability of the iron core.

[0030] The working principle or structural principle is as follows: During processing, the first silicon steel sheet 11 and the second silicon steel sheet 12 are alternately stacked and glued together to form the main iron core block 1. The flat-edged silicon steel sheet 21 and the convex-edged silicon steel sheet 22 are alternately stacked and glued together to form the secondary iron core block 2. Then, the heat dissipation side plate 3 is installed on the outer side of the main iron core block 1 by using adhesive pressing and slot fitting. After that, the winding is installed to complete the assembly. During operation, the magnetic force is conducted through the main iron core block 1 and the secondary iron core block 2. The heat generated by the iron core is conducted to the heat dissipation medium by itself in conjunction with the heat dissipation side plate 3 and the heat dissipation slot 221. The setting of the heat dissipation side plate 3 and the heat dissipation slot 221 can increase the heat dissipation contact area between the iron core structure and the heat dissipation medium without affecting the magnetic flux of the iron core, which can effectively improve the heat dissipation efficiency of the iron core.

[0031] In summary, this core assembly adopts an alternating laminated structure, utilizing two sets of silicon steel sheets with structural differences to alternately stack and form a core block structure. The main core block 1 is composed of alternating stacks of a first silicon steel sheet 11 and a second silicon steel sheet 12. The square notch 121 on the outer edge of the second silicon steel sheet 12 is used to mate and fit the heat dissipation side plate 3, achieving seamless mating installation of the heat dissipation side plate 3. The secondary core block 2 is composed of alternating stacks of flat-edge silicon steel sheets 21 and convex-edge silicon steel sheets 22, with a heat dissipation groove 221 provided on the convex side of the convex-edge silicon steel sheet 22. The placement of the heat dissipation side plate 3 and the heat dissipation groove 221 increases the heat dissipation contact area between the core structure and the heat dissipation medium without affecting the magnetic flux of the core, effectively improving the heat dissipation efficiency and working stability of the core.

[0032] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A transformer core assembly comprising a main core block (1), a sub core block (2) and a cooling side plate (3), characterized in that: The auxiliary iron core block (2) is installed on the inner end side of the main iron core block (1), and the heat dissipation side plate (3) is installed on the outer side of the main iron core block (1). The main iron core block (1) is composed of first silicon steel sheets (11) and second silicon steel sheets (12) alternately stacked, the outer side of the second silicon steel sheet (12) is provided with a square notch (121), the auxiliary iron core block (2) is composed of flat edge silicon steel sheets (21) and convex edge silicon steel sheets (22) alternately stacked, and the outer side of the convex edge silicon steel sheet (22) is provided with a heat dissipation notch (221).

2. A transformer core assembly according to claim 1, characterized in that: The first silicon steel sheet (11) and the second silicon steel sheet (12) are provided in an E-shaped structure, and the first silicon steel sheet (11) and the second silicon steel sheet (12) are fixed and attached in an up-down alternating manner.

3. A transformer core assembly according to claim 2, characterized in that: The first silicon steel sheet (11) and the second silicon steel sheet (12) are provided in an E-shaped structure, and the first silicon steel sheet (11) and the second silicon steel sheet (12) are fixed and attached in an up-down alternating manner.

4. A transformer core assembly according to claim 3, characterized in that: The first silicon steel sheet (11) and the second silicon steel sheet (12) are provided in an E-shaped structure, and the first silicon steel sheet (11) and the second silicon steel sheet (12) are fixed and attached in an up-down alternating manner.

5. A transformer core assembly according to claim 4, characterized in that: The inner side of the heat dissipation side plate (3) is fixed and attached to the outer side of the main iron core block (1), the inner side of the heat dissipation side plate (3) is fixed with a butt plug (32), the butt plug (32) corresponds to the distribution position of the square notch (121), and after installation, the butt plug (32) is inserted and connected with the square notch (121).

6. A transformer core assembly according to claim 1, characterized in that: The outer side of the heat dissipation side plate (3) is provided with a heat dissipation fin (31), and the heat dissipation fin (31) is fixed and installed on the outer side of the heat dissipation side plate (3) in an equidistant manner.

7. A transformer core assembly according to claim 2, characterized in that: The flat edge silicon steel sheet (21) and the convex edge silicon steel sheet (22) are provided in a rectangular strip structure, and the flat edge silicon steel sheet (21) and the convex edge silicon steel sheet (22) are fixed and attached in an up-down alternating manner. The outer side of the convex edge silicon steel sheet (22) is provided in a convex manner, and the heat dissipation notch (221) is provided in an equidistant manner on the upper part of the convex part of the convex edge silicon steel sheet (22).

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