Transformer framework with novel middle column air gap avoiding structure

Abstract

The utility model discloses a transformer framework with a novel middle column air gap avoiding structure, which comprises a winding tube, secondary side frameworks are respectively arranged on two sides of the winding tube, and a magnetic core matched with the secondary side frameworks is arranged on one side, far away from the winding tube, of each secondary side framework. The inner wall of the magnetic core is provided with a magnetic core middle column air gap matched with the winding pipe, the outer wall of the winding pipe is sleeved with winding groove distance adjusting plates which are symmetrically arranged, and the winding groove distance adjusting plates are connected with the winding pipe through limiting assemblies. An air gap avoiding blade is fixedly arranged between the two winding groove distance adjusting plates and located on the outer wall of the winding pipe in a sleeving mode. By arranging the air gap avoiding blades, a diffusion magnetic field caused by the air gap of the magnetic core center pillar can be effectively avoided, the eddy current loss of the coil is reduced, the temperature rise of the transformer is improved, the working efficiency of the transformer is improved, the framework structure is simple, the production time cost does not need to be additionally increased, automatic production can be realized, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer skeleton with a novel center column avoidance air gap structure. Background Art

[0002] Some high-power, high-frequency transformers currently on the market usually have a large air gap designed in the core column to prevent core saturation. When the transformer is working, the core will generate a high-frequency changing magnetic field, and a diffused magnetic field will be generated around the air gap in the middle of the core column. The closer to the air gap, the stronger the diffused magnetic intensity. The diffused magnetic field will pass through the coil and cause eddy current loss, thereby causing the transformer coil temperature to rise too high and resulting in reduced transformer efficiency.

[0003] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0004] In response to the problems in the related art, the present invention proposes a transformer skeleton with a novel center column air gap avoidance structure to overcome the above technical problems existing in the existing related art.

[0005] To this end, the specific technical solutions adopted in this utility model are as follows:

[0006] A transformer skeleton with a novel center column air gap avoidance structure includes a winding tube, secondary side skeletons are respectively provided on both sides of the winding tube, a magnetic core matching the secondary side skeleton is provided on the side of the secondary side skeleton away from the winding tube, the inner wall of the magnetic core is provided with a magnetic core center column air gap matching the winding tube, the outer wall of the winding tube is sleeved with symmetrically arranged winding groove spacing adjustment plates, the winding groove spacing adjustment plates are connected to the winding tube through a limit assembly, and an air gap avoidance blade is fixedly sleeved between two groups of the winding groove spacing adjustment plates and located on the outer wall of the winding tube.

[0007] Preferably, a skeleton extension plate is provided on one side of the secondary side skeleton.

[0008] Preferably, a wire-passing groove is provided on the air gap avoidance blade.

[0009] Preferably, the limit assembly includes a guide column symmetrically arranged on the outer wall of the groove spacing adjustment plate and extending into the groove spacing adjustment plate, a guide slide matching the guide column is provided on the outer wall of the winding tube, a placement groove is provided in the guide column, a limit rod is provided in the placement groove, a fixed sleeve on the outer wall of the limit rod is provided with a pressure block matching the placement groove, a spring is provided on one side of the pressure block and located on the outer wall of the limit rod, one side of the limit rod extends to the outside of the placement groove and is connected to the winding tube, a limit groove matching the limit rod is provided on the winding tube, and the limit rod extends away from the winding tube to the outside of the placement groove and is connected to the pull ring.

[0010] Preferably, sliding holes matching the limiting rod are provided on both sides of the guide column, and the pressing block is connected to the guide column via the spring.

[0011] Preferably, the limiting groove is provided with a plurality of components which are equidistantly distributed.

[0012] The beneficial effects of the present invention are as follows: by arranging the air gap avoidance blades, the diffused magnetic field caused by the air gap in the core column can be effectively avoided, the eddy current loss of the coil can be reduced, the temperature rise of the transformer can be improved, and the working efficiency of the transformer can be improved. The skeleton structure is simple, and no additional production labor cost is required. Automatic production can be realized, and production efficiency can be improved. By arranging the skeleton extension plate, the safety distance requirement between the primary and secondary can be easily met. By opening the wire grooves on the air gap avoidance blades, cross-slot winding during automated winding is facilitated. By arranging the winding slot spacing adjustment plate and the limit assembly, the winding slot spacing can be adjusted at any time according to the actual winding situation, and the use is more flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of a transformer skeleton with a novel center column air gap avoidance structure according to an embodiment of the present utility model;

[0015] Figure 2 This is a structural diagram of a secondary side frame in a transformer frame with a novel center column air gap avoidance structure according to an embodiment of the present utility model;

[0016] Figure 3This is a top view of a secondary side frame of a transformer frame with a novel center column air gap avoidance structure according to an embodiment of the present utility model;

[0017] Figure 4 This is a schematic structural diagram of a bobbin in a transformer bobbin having a novel center column air gap avoidance structure according to an embodiment of the present utility model;

[0018] Figure 5 This is a front view of a winding bobbin in a transformer frame with a novel center column air gap avoidance structure according to an embodiment of the utility model;

[0019] Figure 6 This is a side cross-sectional view of a winding bobbin in a transformer skeleton with a novel center column air gap avoidance structure according to an embodiment of the utility model;

[0020] Figure 7 yes Figure 6 A local enlarged schematic diagram of point A in the middle.

[0021] In the picture:

[0022] 1. Winding bobbin; 2. Secondary side frame; 3. Magnetic core; 4. Air gap in the core center column; 5. Winding slot spacing adjustment plate; 6. Air gap avoidance blade; 7. Frame extension plate; 8. Wire groove; 9. Guide column; 10. Guide slide; 11. Placement slot; 12. Limit rod; 13. Pressure block; 14. Spring; 15. Pull ring; 16. Limit slot. DETAILED DESCRIPTION

[0023] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] According to an embodiment of the present utility model, a transformer skeleton with a novel center column air gap avoidance structure is provided.

[0025] Embodiment 1;

[0026] like Figure 1-7As shown, according to an embodiment of the present invention, a transformer skeleton with a novel structure for avoiding a middle column air gap comprises a bobbin 1, with secondary-side skeletons 2 provided on both sides of the bobbin 1. A magnetic core 3 matching the bobbin 1 is provided on the side of the secondary-side skeleton 2 away from the bobbin 1. The inner wall of the magnetic core 3 is provided with a middle column air gap 4 matching the bobbin 1. The outer wall of the bobbin 1 is provided with symmetrically arranged winding groove spacing adjustment plates 5, which are connected to the bobbin 1 through a limiting component. An air gap avoidance blade 6 is fixedly provided between the two groups of winding groove spacing adjustment plates 5 and on the outer wall of the bobbin 1. A skeleton extension plate 7 is provided on one side of the secondary-side skeleton 2. A wire passing groove 8 is provided on the air gap avoidance blade 6. By setting the air gap avoidance blade 6, the diffused magnetic field caused by the air gap 4 in the core column can be effectively avoided, the eddy current loss of the coil can be reduced, the temperature rise of the transformer can be improved, and the working efficiency of the transformer can be improved. The skeleton structure is simple, and no additional production labor cost is required. Automated production can be achieved and production efficiency can be improved. By setting the skeleton extension plate 7, the safety distance requirements between the primary and secondary can be easily met. By opening a wire slot on the air gap avoidance blade 6, cross-slot winding during automated winding is facilitated.

[0027] Embodiment 2;

[0028] like Figure 1-4As shown, it includes a winding tube 1, and secondary side frames 2 are respectively provided on both sides of the winding tube 1. A magnetic core 3 matching it is provided on the side of the secondary side frame 2 away from the winding tube 1. The inner wall of the magnetic core 3 is provided with a magnetic core center column air gap 4 matching the winding tube 1. The outer wall of the winding tube 1 is provided with symmetrically arranged winding groove spacing adjustment plates 5, and the winding groove spacing adjustment plates 5 are connected to the winding tube 1 through a limiting component. An air gap avoidance blade 6 is fixedly provided between the two groups of the winding groove spacing adjustment plates 5 and on the outer wall of the winding tube 1. The limiting assembly includes a symmetrically arranged guide post 9 provided on the outer wall of the winding groove spacing adjustment plate 5 and extending into the winding groove spacing adjustment plate 5, a guide slot 10 is provided on the outer wall of the winding tube 1 to match the guide post 9, a placement slot 11 is provided in the guide post 9, a limiting rod 12 is provided in the placement slot 11, a pressure block 13 matching the placement slot 11 is fixedly sleeved on the outer wall of the limiting rod 12, a spring 14 is sleeved on one side of the pressure block 13 and located on the outer wall of the limiting rod 12, one side of the limiting rod 12 extends to the outside of the placement slot 11 and is connected to the winding tube 1, a limiting slot 16 matching the limiting rod 12 is provided on the winding tube 1, and the side of the limiting rod 12 away from the winding tube 1 extends to the outside of the placement slot 11 and is connected to the pull ring 15. Sliding holes matching the limiting rod 12 are provided on both sides of the guide post 9, and the pressure block 13 is connected to the guide post 9 via the spring 14. The limiting groove 16 is provided with several components and is evenly spaced. When the winding groove spacing needs to be adjusted, the operator pulls the pull ring 15, which drives the limiting rod 12 to disengage from the limiting groove 16 on the winding tube 1. At this time, the spring 14 is in a compressed state, and the winding groove spacing adjustment plate 5 begins to slide. When it reaches the appropriate position, the pull ring 15 is released. At this time, the spring 14 resets and drives the limiting rod 12 to insert into the limiting groove 16 to limit it. By providing the winding groove spacing adjustment plate and the limiting components, the winding groove spacing can be adjusted at any time according to the actual winding situation, making it more flexible and convenient to use.

[0029] In actual application, by setting the air gap avoidance blade 6, the diffused magnetic field caused by the air gap 4 in the core center column can be effectively avoided, the eddy current loss of the coil can be reduced, the temperature rise of the transformer can be improved, and the working efficiency of the transformer can be improved. The skeleton structure is simple, and no additional production labor cost is required, which can realize automated production and improve production efficiency. By setting the skeleton extension plate 7, the safety distance requirements between the primary and secondary can be easily met, and the cross-slot winding during automated winding is facilitated by opening a wire groove on the air gap avoidance blade 6; when it is necessary to adjust the winding groove spacing, the personnel pulls the pull ring 15, and the pull ring 15 drives the limit rod 12 to disengage from the limit groove 16 on the winding tube 1. At this time, the spring 14 is in a compressed state, and the winding groove spacing adjustment plate 5 starts to slide. When it reaches the appropriate position, the pull ring 15 is released. At this time, the spring 14 resets and drives the limit rod 12 to insert into the limit groove 16 to limit it. By setting the winding groove spacing adjustment plate and the limit assembly, the winding groove spacing can be adjusted at any time according to the actual winding situation, which is more flexible and convenient to use.

[0030] To sum up, with the help of the above-mentioned technical solution of the present invention, by setting the air gap avoidance blades, the diffused magnetic field caused by the air gap in the core column can be effectively avoided, the eddy current loss of the coil can be reduced, the temperature rise of the transformer can be improved, and the working efficiency of the transformer can be improved. The skeleton structure is simple, and no additional production labor cost is required. Automated production can be achieved and production efficiency can be improved. By setting the skeleton extension plate, the safety distance requirements between the primary and secondary can be easily met. By opening the wire groove on the air gap avoidance blade, cross-slot winding during automated winding is facilitated. By setting the winding slot spacing adjustment plate and the limit assembly, the winding slot spacing can be adjusted at any time according to the actual winding situation, which is more flexible and convenient to use.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transformer skeleton with a novel structure for avoiding the middle column air gap, characterized in that: The invention comprises a winding tube (1), wherein both sides of the winding tube (1) are respectively provided with a secondary side frame (2), a magnetic core (3) matching the winding tube (1) is provided on the side of the secondary side frame (2) away from the winding tube (1), the inner wall of the magnetic core (3) is provided with a magnetic core middle column air gap (4) matching the winding tube (1), the outer wall of the winding tube (1) is provided with symmetrically arranged winding groove spacing adjustment plates (5), the winding groove spacing adjustment plates (5) are connected to the winding tube (1) through a limiting component, and an air gap avoidance blade (6) is fixedly provided between two groups of the winding groove spacing adjustment plates (5) and located on the outer wall of the winding tube (1).

2. The transformer skeleton with a novel center column air gap avoidance structure according to claim 1, characterized in that: A skeleton extension plate (7) is provided on one side of the secondary side skeleton (2).

3. The transformer skeleton with a novel center column air gap avoidance structure according to claim 1, characterized in that: A wire passing groove (8) is provided on the air gap avoidance blade (6).

4. The transformer skeleton with a novel center column air gap avoidance structure according to claim 1, characterized in that: The limiting assembly comprises a guide column (9) symmetrically arranged on the outer wall of the winding groove spacing adjustment plate (5) and extending into the winding groove spacing adjustment plate (5); a guide slide groove (10) matching the guide column (9) is provided on the outer wall of the winding tube (1); a placement groove (11) is provided in the guide column (9); a limiting rod (12) is provided in the placement groove (11); and a fixing sleeve on the outer wall of the limiting rod (12) is provided matching the placement groove (11). A pressure block (13) is provided, and a spring (14) is sleeved on one side of the pressure block (13) and located on the outer wall of the limiting rod (12). One side of the limiting rod (12) extends to the outside of the placement groove (11) and is connected to the winding tube (1). A limiting groove (16) matching the limiting rod (12) is provided on the winding tube (1). The limiting rod (12) extends away from the side of the winding tube (1) to the outside of the placement groove (11) and is connected to the pull ring (15).

5. The transformer skeleton with a novel center column air gap avoidance structure according to claim 4, characterized in that: Slide holes matching the limiting rod (12) are provided on both sides of the guide column (9), and the pressing block (13) is connected to the guide column (9) via the spring (14).

6. The transformer skeleton with a novel center column air gap avoidance structure according to claim 4, characterized in that: The limiting groove (16) is provided with a plurality of components which are distributed at equal intervals.

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