Transformer iron core structure

Abstract

The utility model relates to the technical field of transformers, in particular to a transformer iron core structure which comprises a first lamination and a second lamination. The first laminations and the second laminations are arranged in a staggered and stacked mode, the positioning points correspond to the positioning grooves, gaps are formed between the first laminations and the second laminations, the first winding grooves and the second winding grooves are formed in a staggered mode, and the upper sides and the lower sides of the first laminations and the second laminations are jointly provided with two heat dissipation grooves in a penetrating mode. A plurality of first laminations and a plurality of second laminations are overlapped in a crossed mode, gaps between the first laminations and the second laminations can be filled with insulating oil, the insulating oil can enter the space between the side edges of the second laminations which are arranged in an extending mode and is filled in the winding coil, and the heat dissipation effect of the winding coil is improved under heat dissipation grooves formed by the first laminations and the second laminations in a penetrating mode. The contact heat dissipation area between the first lamination and the insulating oil and the contact heat dissipation area between the second lamination and the insulating oil are increased, the heat dissipation effect is achieved in a matched mode, the heat dissipation effect is better compared with a traditional transformer iron core, and normal operation of a transformer is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer iron core structure. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are the primary coil, the secondary coil, and the iron core. The simplest iron core transformer consists of an iron core and two coils with different numbers of turns wound around the iron core. The role of the iron core is to strengthen the magnetic coupling between the two coils.

[0003] A patent with the publication number CN 202662431 U discloses a transformer iron core. Its overall shape is waist-shaped, with a rectangular part in the middle of the waist-shaped iron core and arc-shaped ends. The arc-shaped parts are symmetrically arranged at both ends of the middle rectangular part. By using the iron core of the present utility model, during the blanking process of silicon steel sheets, the specifications of the silicon steel sheets are reduced a lot. Therefore, it is not only convenient for processing but also greatly reduces the production cost, and the product performance is easier to guarantee.

[0004] Since a transformer generates heat during operation, and the heat is mainly concentrated inside the iron core, the existing transformer iron core cannot effectively transfer the heat, resulting in heat accumulation and affecting the normal operation of the transformer. Therefore, a transformer iron core structure is proposed to solve the above problems. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the present utility model proposes a transformer iron core structure.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: A transformer iron core structure according to the present utility model includes a first lamination and a second lamination. The first lamination and the second lamination are alternately stacked. The side surfaces of the first lamination and the second lamination are evenly distributed with positioning grooves, and on the side of the first lamination and the second lamination opposite to the positioning grooves, positioning points are evenly distributed. The positioning points correspond to the positioning grooves, and the positioning points can be clamped in the positioning grooves. A gap is provided between the first lamination and the second lamination. Two first winding grooves are symmetrically opened on the side surface of the first lamination, and two second winding grooves are penetrated through the side surface of the second lamination. The first winding grooves and the second winding grooves are arranged in a staggered manner. Two heat dissipation grooves are penetrated through the upper and lower sides of the first lamination and the second lamination.

[0007] Two first limiting grooves are respectively opened at the upper and lower ends of the first lamination and the second lamination. Fixing components are respectively arranged in a mirror image manner at the upper and lower ends of the first lamination and the second lamination, which plays a role in heat dissipation. Compared with the traditional transformer iron core, the heat dissipation effect is better, ensuring the normal operation of the transformer.

[0008] Preferably, the fixing component includes a U-shaped guard plate, a partition plate is transversely arranged and installed inside the U-shaped guard plate, the partition plates are parallel to each other, two second limiting grooves are symmetrically formed in common on the side surfaces of the U-shaped guard plate and the partition plate, clamping bars are respectively arranged through the two second limiting grooves and the two first limiting grooves, fixing bars are respectively installed between the two ends of the two clamping bars, and the cooperation achieves the effect of fixing the first stack and the second stack, improving the use stability.

[0009] Preferably, both the first stack and the second stack are parallel to the partition plate, the ends of the first stack and the second stack are both located inside the U-shaped guard plate, the clamping bar is perpendicular to the first stack, the fixing bar is perpendicular to the clamping bar, and the fixing bar is located outside the U-shaped guard plate, and the cooperation achieves the effect of limiting the first stack and the second stack, ensuring the heat dissipation effect.

[0010] Preferably, the two ends of the fixing bar are respectively welded to the ends of the two clamping bars, the end parts of the first stack and the second stack are respectively arranged in a staggered manner between the partition plates, and the partition plate is located in the gap between the first stack and the second stack, and the cooperation achieves the effect of supporting the first stack and the second stack.

[0011] Preferably, a C-shaped guard bar is commonly installed on the outer sides of the two U-shaped guard plates in the two groups of fixing components, and both U-shaped guard plates are located inside the opening of the C-shaped guard bar, and the two ends of the C-shaped guard bar are respectively welded to the two U-shaped guard plates, and the cooperation achieves the effect of fixing the U-shaped guard plate, ensuring the use stability.

[0012] Preferably, the first stack and the second stack are parallel to each other, the heights of the first stack and the second stack are the same, and the bottom side length of the second stack is greater than the bottom side length of the first stack, and the cooperation achieves the effect of facilitating heat dissipation.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, by overlapping a plurality of first stacks and a plurality of second stacks crosswise, insulating oil will fill the gap between the first stack and the second stack. Under the support of the side of the second stack, the insulating oil will enter between the sides of the extended second stack and fill inside the winding coil. Under the heat dissipation grooves commonly formed in the first stack and the second stack, the contact heat dissipation area between the first stack and the second stack and the insulating oil is increased, and the cooperation achieves the effect of heat dissipation. Compared with the traditional transformer core, the heat dissipation effect is better, ensuring the normal operation of the transformer.

[0015] 2. Under the limitation of the two clamping strips, the first laminated sheet and the second laminated sheet are prevented from sliding off inside the U-shaped guard plate. Under the action of the C-shaped guard strip, the two U-shaped guard plates are fixed on the outer side of the iron core formed by the superposition and splicing of the first laminated sheet and the second laminated sheet, thereby preventing the two U-shaped guard plates from falling off. The cooperation achieves the fixing effect, ensures the normal use of the iron core, and improves the use stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is the first three-dimensional structure diagram;

[0018] Figure 2 is the enlarged schematic diagram of the main structure of the iron core;

[0019] Figure 3 is the enlarged sectional view of the main structure of the laminated sheet;

[0020] Figure 4 is the enlarged schematic diagram of area A in the sectional view of the main structure of the laminated sheet;

[0021] Figure 5 is the enlarged schematic diagram of the main structure of the first laminated sheet;

[0022] Figure 6 is the enlarged schematic diagram of the main structure of the second laminated sheet;

[0023] Figure 7 is the enlarged schematic diagram of the main structure of the fixing component;

[0024] Figure 8 is the enlarged schematic diagram of the structure of the U-shaped guard plate body.

[0025] In the figure: 1, the first laminated sheet; 2, the second laminated sheet; 3, the positioning groove; 4, the positioning point; 5, the first winding groove; 6, the second winding groove; 7, the heat dissipation groove; 8, the first limiting groove; 9, the U-shaped guard plate; 10, the partition plate; 11, the second limiting groove; 12, the clamping strip; 13, the fixing strip; 14, the C-shaped guard strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the protection scope of the present utility model.

[0027] Please refer to Figures 1-6 As shown, a transformer core structure includes a first lamination 1 and a second lamination 2; the first lamination 1 and the second lamination 2 are alternately stacked, and positioning grooves 3 are evenly distributed on the sides of the first lamination 1 and the second lamination 2. And on the side of the first lamination 1 and the second lamination 2 opposite to the positioning grooves 3, positioning points 4 are evenly distributed. And the positioning points 4 correspond to the positioning grooves 3, and the positioning points 4 can be clamped in the positioning grooves 3. A gap is provided between the first lamination 1 and the second lamination 2. Two first winding grooves 5 are symmetrically opened on the side of the first lamination 1. Two second winding grooves 6 are penetrated through the side of the second lamination 2, and the first winding grooves 5 and the second winding grooves 6 are arranged in a staggered manner. Two heat dissipation grooves 7 are jointly penetrated through the upper and lower sides of the first lamination 1 and the second lamination 2. Two first limiting grooves 8 are respectively jointly opened at the upper and lower ends of the first lamination 1 and the second lamination 2. Fixing components are respectively arranged at the upper and lower ends of the first lamination 1 and the second lamination 2 in a mirror image manner. The first lamination 1 and the second lamination 2 are parallel to each other, the first lamination 1 and the second lamination 2 have the same height, and the bottom side length of the second lamination 2 is greater than the bottom side length of the first lamination 1.

[0028] During operation, since the transformer generates heat during operation and the heat is mainly concentrated inside the iron core, the existing transformer iron core cannot effectively transfer the heat out, resulting in heat accumulation and affecting the normal operation of the transformer. In this solution, a plurality of first laminations 1 and a plurality of second laminations 2 are cross-stacked together, and the positioning points 4 on the side of adjacent first laminations 1 are clamped in the positioning grooves 3 on the side of adjacent second laminations 2, and the positioning points 4 on the side of adjacent second laminations 2 are clamped in the positioning grooves 3 on the side of adjacent first laminations 1. At this time, the two first limiting grooves 8 at both ends of the first lamination 1 and the second lamination 2 are aligned with each other, and there will be a gap between the stacked first lamination 1 and the second lamination 2 supported by the positioning points 4. The first winding groove 5 on the side of the first lamination 1 and the second winding groove 6 on the side of the second lamination 2 are arranged in a staggered manner. The two side edges of the second lamination 2 will protrude from the two side edges of the first lamination 1, and the distance between the two second winding grooves 6 is greater than the distance between the two first winding grooves 5. At this time, the first winding groove 5 and the second winding groove 6 are arranged in a staggered manner. During normal use, the windings are respectively passed through the communicating first winding groove 5 and the second winding groove 6. At this time, the windings are jointly supported by the inner side edge of the first winding groove 5 and the outer side edge of the second lamination 2. During operation, the insulating oil will fill the gap between the first lamination 1 and the second lamination 2, and since the side length of the second lamination 2 is greater than the side length of the first lamination 1, under the support of the side edge of the second lamination 2, the insulating oil will enter between the side edges of the extended second lamination 2 and fill the inside of the winding coil. Under the heat dissipation grooves 7 jointly opened by the first lamination 1 and the second lamination 2, the contact heat dissipation area between the first lamination 1 and the second lamination 2 and the insulating oil is increased, and the fluidity of the insulating oil is improved. At this time, the heat in the iron core formed by the combination of the first lamination 1 and the second lamination 2 will exchange heat through the insulating oil filled in it, achieving the effect of heat dissipation, and having a better heat dissipation effect compared with the traditional transformer iron core, ensuring the normal operation of the transformer.

[0029] Please refer to Figures 7-8As shown in the figure, the fixing component includes a U-shaped guard plate 9. A partition plate 10 is transversely arranged and installed inside the U-shaped guard plate 9. The partition plates 10 are parallel to each other. Two second limiting grooves 11 are symmetrically opened on the side surfaces of the U-shaped guard plate 9 and the partition plate 10. Clamping bars 12 are respectively arranged through the two second limiting grooves 11 and the two first limiting grooves 8. Fixing bars 13 are respectively installed between the two ends of the two clamping bars 12. The first laminated sheet 1 and the second laminated sheet 2 are both parallel to the partition plate 10. The ends of the first laminated sheet 1 and the second laminated sheet 2 are both located inside the U-shaped guard plate 9. The clamping bar 12 is perpendicular to the first laminated sheet 1. The fixing bar 13 is perpendicular to the clamping bar 12, and the fixing bar 13 is located outside the U-shaped guard plate 9. The two ends of the fixing bar 13 are respectively welded to the two ends of the clamping bar 12. The ends of the first laminated sheet 1 and the second laminated sheet 2 are respectively arranged alternately between the partition plates 10. The partition plate 10 is located in the gap between the first laminated sheet 1 and the second laminated sheet 2. C-shaped guard strips 14 are jointly installed on the outer sides of the two U-shaped guard plates 9 in the two groups of fixing components, and the two U-shaped guard plates 9 are both located inside the opening of the C-shaped guard strip 14. The two ends of the C-shaped guard strip 14 are respectively welded to the two U-shaped guard plates 9.

[0030] During operation, to ensure the normal use of the transformer core in this solution and ensure the heat dissipation effect and firmness, in this solution, after the first laminated sheet 1 and the second laminated sheet 2 are stacked, the two U-shaped guard plates 9 are respectively buckled on the upper and lower ends of the core formed by the superposition and splicing of the first laminated sheet 1 and the second laminated sheet 2, and the partition plates 10 inside the U-shaped guard plate 9 are arranged alternately in the gap between the first laminated sheet 1 and the second laminated sheet 2. Then, the two clamping bars 12 are respectively arranged through the two first limiting grooves 8 and the second limiting grooves 11, and then the two fixing bars 13 are respectively welded to the two ends of the two clamping bars 12. Under the limitation of the two clamping bars 12, it is prevented that the first laminated sheet 1 and the second laminated sheet 2 slide off from inside the U-shaped guard plate 9. Then, the two C-shaped guard strips 14 are respectively buckled on the outer sides of the two U-shaped guard plates 9, and the two ends of the C-shaped guard strip 14 are respectively welded to the two U-shaped guard plates 9. Under the action of the C-shaped guard strip 14, the two U-shaped guard plates 9 are fixed on the outer side of the core formed by the superposition and splicing of the first laminated sheet 1 and the second laminated sheet 2, thereby preventing the two U-shaped guard plates 9 from falling off, achieving the fixing effect, ensuring the normal use of the core, and improving the use stability.

[0031] Working principle: By cross-stacking multiple first laminations 1 and multiple second laminations 2, and making the positioning points 4 on the side of adjacent first laminations 1 be clamped in the positioning grooves 3 on the side of adjacent second laminations 2, and the positioning points 4 on the side of adjacent second laminations 2 be clamped in the positioning grooves 3 on the side of adjacent first laminations 1. At this time, the two first limiting grooves 8 at both ends of the first lamination 1 and the second lamination 2 are aligned with each other, and there will be a gap between the stacked first laminations 1 and second laminations 2 supported by the positioning points 4. The first wire winding grooves 5 on the side of the first lamination 1 and the second wire winding grooves 6 on the side of the second lamination 2 are arranged in a staggered manner. The two side edges of the second lamination 2 will protrude from the two side edges of the first lamination 1, and the distance between the two second wire winding grooves 6 is greater than the distance between the two first wire winding grooves 5. At this time, the first wire winding grooves 5 and the second wire winding grooves 6 are arranged in a staggered manner. During normal use, the wire is respectively passed through the interconnected first wire winding grooves 5 and second wire winding grooves 6. At this time, the wire is jointly supported by the inner side edge of the first wire winding groove 5 and the outer side edge of the second lamination 2. During operation, insulating oil will fill the gap between the first lamination 1 and the second lamination 2. And because the side length of the second lamination 2 is greater than the side length of the first lamination 1, supported by the side edges of the second lamination 2, the insulating oil will enter between the side edges of the extended second lamination 2 and fill the inside of the wire coil. Under the heat dissipation grooves 7 jointly opened by the first lamination 1 and the second lamination 2, the contact heat dissipation area between the first lamination 1 and the second lamination 2 and the insulating oil is increased, and the fluidity of the insulating oil is improved. At this time, the heat in the iron core formed by the combination of the first lamination 1 and the second lamination 2 will exchange heat through the insulating oil filled in it, achieving the heat dissipation effect. Compared with the traditional transformer iron core, the heat dissipation effect is better, ensuring the normal operation of the transformer.

[0032] After the first lamination 1 and the second lamination 2 are stacked, two U-shaped guard plates 9 are respectively buckled on the upper and lower ends of the iron core formed by the stacking and combination of the first lamination 1 and the second lamination 2, and the partition plates 10 in the U-shaped guard plates 9 are arranged in a staggered manner in the gap between the first lamination 1 and the second lamination 2. Then, two clamping strips 12 are respectively passed through the two first limiting grooves 8 and the second limiting grooves 11, and then two fixing strips 13 are respectively welded to both ends of the two clamping strips 12. Under the limitation of the two clamping strips 12, it is prevented that the first lamination 1 and the second lamination 2 slide off from the U-shaped guard plates 9. Then, two C-shaped guard strips 14 are respectively buckled on the outside of the two U-shaped guard plates 9, and both ends of the C-shaped guard strips 14 are respectively welded to the two U-shaped guard plates 9. Under the action of the C-shaped guard strips 14, the two U-shaped guard plates 9 are fixed on the outside of the iron core formed by the stacking and combination of the first lamination 1 and the second lamination 2, thereby preventing the two U-shaped guard plates 9 from falling off, achieving the fixing effect, ensuring the normal use of the iron core, and improving the use stability.

[0033] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A transformer core structure, characterized in that: The invention comprises a first laminate (1) and a second laminate (2); the first laminate (1) and the second laminate (2) are arranged in an alternating manner, positioning grooves (3) are evenly distributed on the sides of the first laminate (1) and the second laminate (2), and positioning points (4) are evenly distributed on the sides of the first laminate (1) and the second laminate (2) opposite to the positioning grooves (3), and the positioning points (4) correspond to the positioning grooves (3), and the positioning points (4) can be clamped on In the positioning groove (3), a gap is provided between the first lamination (1) and the second lamination (2); two first winding grooves (5) are symmetrically provided on the side of the first lamination (1); two second winding grooves (6) are provided through the side of the second lamination (2); and the first winding groove (5) and the second winding groove (6) are provided in a staggered manner; and two heat dissipation grooves (7) are provided through the upper and lower sides of the first lamination (1) and the second lamination (2); The upper and lower ends of the No. 1 stack (1) and the No. 2 stack (2) are respectively provided with two No. 1 limit grooves (8), and the upper and lower ends of the No. 1 stack (1) and the No. 2 stack (2) are respectively provided with fixed components in a mirror-like manner.

2. A transformer core structure according to claim 1, characterized in that: The fixing assembly comprises a U-shaped guard plate (9), a partition plate (10) is installed in a transverse arrangement inside the U-shaped guard plate (9), the partition plates (10) are parallel to each other, two No. 2 limiting grooves (11) are symmetrically provided on the sides of the U-shaped guard plate (9) and the partition plate (10), a clamping strip (12) is respectively provided through the two No. 2 limiting grooves (11) and the two No. 1 limiting grooves (8), and a fixing strip (13) is respectively installed between the two ends of the two clamping strips (12).

3. A transformer core structure according to claim 2, characterized in that: The first lamination (1) and the second lamination (2) are parallel to the partition (10), the ends of the first lamination (1) and the second lamination (2) are located inside the U-shaped guard plate (9), the clamping strip (12) and the first lamination (1) are perpendicular to each other, the fixing strip (13) and the clamping strip (12) are perpendicular to each other, and the fixing strip (13) is located outside the U-shaped guard plate (9).

4. A transformer core structure according to claim 2, characterized in that: The two ends of the fixing strip (13) are respectively welded to the ends of the two clamping strips (12); the ends of the No. 1 lamination (1) and the No. 2 lamination (2) are respectively arranged alternately between the partition plates (10); and the partition plates (10) are located in the gap between the No. 1 lamination (1) and the No. 2 lamination (2).

5. A transformer core structure according to claim 2, characterized in that: A C-shaped guard strip (14) is installed on the outer sides of the two U-shaped guard plates (9) in the two sets of the fixing components, and the two U-shaped guard plates (9) are both located in the openings of the C-shaped guard strip (14), and the two ends of the C-shaped guard strip (14) are respectively welded to the two U-shaped guard plates (9).

6. The transformer core structure according to claim 1, characterized in that: The first laminate (1) and the second laminate (2) are parallel to each other, the first laminate (1) and the second laminate (2) have the same height, and the bottom side length of the second laminate (2) is greater than the bottom side length of the first laminate (1).

Images