Double-shielding transformer

Abstract

The utility model relates to the technical field of transformers, in particular to a double-shielding transformer which comprises a framework, an upper magnetic core, a lower magnetic core, a first shielding structure and a second shielding structure, a coil is wound on the periphery of the framework, an upper positioning portion used for positioning the upper magnetic core is arranged at the upper end of the framework, the upper magnetic core is arranged on the upper positioning portion, and the lower magnetic core is arranged on the lower positioning portion. A lower positioning part used for positioning the lower magnetic core is arranged at the lower end of the framework, the lower magnetic core is arranged on the lower positioning part, the upper magnetic core and the lower magnetic core are arranged oppositely, and the ends, close to each other, of the upper magnetic core and the lower magnetic core abut against each other; the first shielding structure surrounds the periphery of the joint of the upper magnetic core and the lower magnetic core; and the second shielding structure sleeves the periphery of the framework. According to the utility model, the upper magnetic core and the lower magnetic core are positioned and mounted, the mounting accuracy is high, and the structural stability is strong; double shielding combination is adopted, the shielding effect is improved, and the influence of the outside on work of the transformer is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a double-shielded transformer. Background Art

[0002] In the field of power transmission and voltage conversion, the transformer is one of the core devices, and the optimization of its performance and the design of its structure are directly related to the efficiency and stability of the power system. In the design of traditional transformer structures, a prominent problem is the lack of an effective core positioning mechanism. The upper and lower cores are the core components of the transformer magnetic circuit, and their precise alignment is the basis for ensuring efficient energy conversion and reducing magnetic leakage. However, in the prior art, the core is often easily offset during the assembly process due to the lack of a special positioning device or method, which not only causes uneven magnetic flux density, increases eddy current loss and hysteresis loss, but also causes the transformer to operate with increased noise. In the long run, it is more likely to accelerate the aging of the insulation material and shorten the service life of the equipment. On the other hand, the configuration of a single-layer shielding shell is another common defect in current transformer design. Although the single-layer shielding can isolate external electromagnetic interference to a certain extent and reduce the impact on the internal circuit of the transformer, its protection ability is limited, especially in high electromagnetic radiation environments or application scenarios that require high electromagnetic compatibility, it is not enough to provide adequate protection. This not only affects the working stability of the transformer, but may also interfere with the normal operation of surrounding electronic equipment, limiting the scope of application of the transformer. Summary of the invention

[0003] The utility model provides a double-shielded transformer to solve the problems of the prior art, realizes the positioning and installation of the upper magnetic core and the lower magnetic core, has high installation accuracy and strong structural stability; adopts double shielding combination to improve the shielding effect and reduce the influence of the outside world on the operation of the transformer.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides a double-shielded transformer, which includes a skeleton, an upper magnetic core, a lower magnetic core, a first shielding structure and a second shielding structure, a coil is wound around the outer periphery of the skeleton, an upper positioning portion for positioning the upper magnetic core is provided at the upper end of the skeleton, the upper magnetic core is mounted on the upper positioning portion, a lower positioning portion for positioning the lower magnetic core is provided at the lower end of the skeleton, the lower magnetic core is mounted on the lower positioning portion, the upper magnetic core and the lower magnetic core are arranged opposite to each other, and the ends of the upper magnetic core and the lower magnetic core that are close to each other abut against each other; the first shielding structure is arranged around the outer periphery of the connection between the upper magnetic core and the lower magnetic core; the second shielding structure is sleeved on the outer periphery of the skeleton.

[0006] Among them, a hollow groove is set through the middle part of the skeleton, the middle part of the upper magnetic core extends into the hollow groove from the upper end of the skeleton, the middle part of the lower magnetic core extends into the hollow groove from the lower end of the skeleton, and the lower end of the middle part of the upper magnetic core is connected to the upper end of the middle part of the lower magnetic core.

[0007] Wherein, the upper positioning portion includes an upper positioning plate, the upper positioning plate is provided with an upper opening, and the upper opening is communicated with the hollow groove.

[0008] Wherein, the lower positioning portion includes a lower positioning groove, and the lower positioning groove is communicated with the hollow groove.

[0009] Wherein, the upper magnetic core is arranged in an "E" shape, and the lower magnetic core is arranged in an "E" shape.

[0010] Wherein, an epoxy adhesive layer is arranged between the first shielding structure and the second shielding structure.

[0011] A primary connection part is arranged on one side of the frame, and a secondary connection part is arranged on the other side of the frame. A plurality of primary pins are arranged in a row at the primary connection part, and two rows of secondary pins are arranged at the secondary connection part.

[0012] Wherein, the primary connecting part is provided with a plurality of first grooves in a row at equal intervals.

[0013] Wherein, the secondary connecting portion is provided with a plurality of second grooves in a row at equal intervals.

[0014] Beneficial effects of the utility model:

[0015] The utility model has a novel structure and ingenious design. Under the above-mentioned arrangement, the upper magnetic core and the lower magnetic core are arranged opposite to each other, and the upper magnetic core and the lower magnetic core are respectively mounted on the upper positioning part and the lower positioning part, so as to realize the positioning and installation of the upper magnetic core and the lower magnetic core, with high installation accuracy and strong structural stability. After installation, the ends of the upper magnetic core and the lower magnetic core that are close to each other can be welded or glued together after abutting against each other, and the coil is wound around the periphery of the skeleton and is located between the upper magnetic core and the lower magnetic core. Furthermore, the first shielding structure is arranged around the periphery of the connection between the upper magnetic core and the lower magnetic core, and the second shielding structure is sleeved on the periphery of the skeleton, that is, the second shielding structure is on the periphery of the first shielding structure, and a double shielding combination is adopted to improve the shielding effect and reduce the influence of the outside on the operation of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic structural diagram of a double-shielded transformer.

[0017] Figure 2 The utility model is a structural exploded view of a double-shielded transformer.

[0018] Figure 3 This is a schematic diagram of the structure of the utility model after the second shielding structure and the epoxy adhesive layer are hidden.

[0019] Figure 4 It is a structural schematic diagram of the skeleton of the utility model.

[0020] Figure 5 This is a schematic structural diagram of the skeleton of the utility model from another perspective.

[0021] exist Figures 1 to 5 Reference numerals in the drawings include:

[0022] 1. Skeleton; 2. Upper magnetic core; 3. Lower magnetic core; 4. First shielding structure; 5. Second shielding structure; 6. Coil; 7. Hollow slot; 8. Upper positioning plate; 9. Upper opening; 10. Lower positioning slot; 11. Epoxy layer; 12. Primary connection; 13. Secondary connection; 14. Primary pin; 15. Secondary pin; 16. First groove; 17. Second groove. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation manner are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0024] A double-shielded transformer, such as Figures 1 to 5As shown, it includes a skeleton 1, an upper magnetic core 2, a lower magnetic core 3, a first shielding structure 4 and a second shielding structure 5, a coil 6 is wound around the outer periphery of the skeleton 1, an upper positioning portion for positioning the upper magnetic core 2 is provided at the upper end of the skeleton 1, the upper magnetic core 2 is mounted on the upper positioning portion, a lower positioning portion for positioning the lower magnetic core 3 is provided at the lower end of the skeleton 1, the lower magnetic core 3 is mounted on the lower positioning portion, the upper magnetic core 2 and the lower magnetic core 3 are arranged opposite to each other, and the ends of the upper magnetic core 2 and the lower magnetic core 3 that are close to each other are connected to each other; the first shielding structure 4 is arranged around the outer periphery of the connection between the upper magnetic core 2 and the lower magnetic core 3; the second shielding structure 5 is sleeved on the outer periphery of the skeleton 1. Specifically, the utility model has a novel structure and ingenious design. Under the above-mentioned setting, the upper magnetic core 2 and the lower magnetic core 3 are arranged opposite to each other, and the upper magnetic core 2 and the lower magnetic core 3 are respectively installed on the upper positioning part and the lower positioning part, so as to realize the positioning and installation of the upper magnetic core 2 and the lower magnetic core 3, with high installation accuracy and strong structural stability; after installation, the ends of the upper magnetic core 2 and the lower magnetic core 3 that are close to each other can be welded or glued together after abutting each other, and the coil 6 is wound around the periphery of the skeleton 1 and is located between the upper magnetic core 2 and the lower magnetic core 3; further, the first shielding structure 4 is arranged around the periphery of the connection between the upper magnetic core 2 and the lower magnetic core 3, and the second shielding structure 5 is sleeved on the periphery of the skeleton 1, that is, the second shielding structure 5 is on the periphery of the first shielding structure 4, and a double shielding combination is adopted to improve the shielding effect and reduce the influence of the outside world on the operation of the transformer.

[0025] In the embodiment of the present application, the material of the first shielding structure 4 is copper; the material of the second shielding structure 5 is iron; wherein the first shielding structure 4 is an annular copper belt; and the second shielding structure 5 is an iron shell.

[0026] In the embodiment of the present application, an epoxy adhesive layer 11 is disposed between the first shielding structure 4 and the second shielding structure 5. Specifically, under the above configuration, epoxy adhesive is used for separation, which is safe and reliable.

[0027] In the embodiment of the present application, a hollow groove 7 is provided through the middle of the skeleton 1, the middle of the upper magnetic core 2 extends into the hollow groove 7 from the upper end of the skeleton 1, the middle of the lower magnetic core 3 extends into the hollow groove 7 from the lower end of the skeleton 1, and the lower end of the middle of the upper magnetic core 2 is connected to the upper end of the middle of the lower magnetic core 3. The upper positioning portion includes an upper positioning plate 8, and the upper positioning plate 8 is provided with an upper opening 9, and the upper opening 9 is connected to the hollow groove 7. The lower positioning portion includes a lower positioning groove 10, and the lower positioning groove 10 is connected to the hollow groove 7. The upper magnetic core 2 is arranged in an "E" shape, and the lower magnetic core 3 is arranged in an "E" shape. Specifically, the upper positioning plate 8 positions the upper magnetic core 2, the middle part of the upper magnetic core 2 extends from the upper opening 9 into the hollow groove 7 and abuts against the middle part of the lower magnetic core 3, the lower ends of the upper magnetic core 2 on both sides are respectively connected to the upper ends of the lower magnetic core 3 on both sides from the two sides of the skeleton 1, the coil 6 is wound around the outer periphery of the central axis of the skeleton 1, and the hollow groove 7 is located in the central axis of the skeleton 1. The structural coordination of the upper magnetic core 2 and the lower magnetic core 3 is the existing technology and will not be repeated here.

[0028] In the embodiment of the present application, a primary connection portion 12 is provided on one side of the frame 1, and a secondary connection portion 13 is provided on the other side of the frame 1. A plurality of primary pins 14 are arranged in a row at the primary connection portion 12, and two rows of secondary pins 15 are arranged at the secondary connection portion 13. Specifically, the secondary pins 15 are arranged in two rows, which can reduce the lateral width of the frame 1, thereby reducing the occupied area of ​​the frame 1.

[0029] In the embodiment of the present application, the primary connection part 12 is provided with a plurality of first grooves 16 at equal intervals in a row. The secondary connection part 13 is provided with a plurality of second grooves 17 at equal intervals in a row. Specifically, the first grooves 16 and the second grooves 17 respectively form air ducts to facilitate gas flow and improve heat dissipation effect.

[0030] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A double-shielded transformer, characterized in that: It includes a skeleton, an upper magnetic core, a lower magnetic core, a first shielding structure and a second shielding structure, a coil is wound around the outer periphery of the skeleton, an upper positioning portion for positioning the upper magnetic core is provided at the upper end of the skeleton, the upper magnetic core is mounted on the upper positioning portion, a lower positioning portion for positioning the lower magnetic core is provided at the lower end of the skeleton, the lower magnetic core is mounted on the lower positioning portion, the upper magnetic core and the lower magnetic core are arranged opposite to each other, and the ends of the upper magnetic core and the lower magnetic core that are close to each other abut against each other; the first shielding structure is arranged around the outer periphery of the connection between the upper magnetic core and the lower magnetic core; the second shielding structure is sleeved on the outer periphery of the skeleton.

2. A double-shielded transformer according to claim 1, characterized in that: A hollow groove is provided through the middle of the skeleton, the middle of the upper magnetic core extends into the hollow groove from the upper end of the skeleton, the middle of the lower magnetic core extends into the hollow groove from the lower end of the skeleton, and the lower end of the middle of the upper magnetic core is connected to the upper end of the middle of the lower magnetic core.

3. A double-shielded transformer according to claim 2, characterized in that: The upper positioning portion includes an upper positioning plate, the upper positioning plate is provided with an upper opening, and the upper opening is communicated with the hollow groove.

4. A double-shielded transformer according to claim 2, characterized in that: The lower positioning portion includes a lower positioning groove, and the lower positioning groove is communicated with the hollow groove.

5. A double-shielded transformer according to claim 2, characterized in that: The upper magnetic core is arranged in an "E" shape, and the lower magnetic core is arranged in an "E" shape.

6. A double-shielded transformer according to claim 2, characterized in that: An epoxy adhesive layer is disposed between the first shielding structure and the second shielding structure.

7. A double-shielded transformer according to claim 1, characterized in that: A primary connection part is arranged on one side of the frame, and a secondary connection part is arranged on the other side of the frame. A plurality of primary pins are arranged in a row at the primary connection part, and two rows of secondary pins are arranged at the secondary connection part.

8. A double-shielded transformer according to claim 7, characterized in that: The primary connecting portion is provided with a plurality of first grooves in a row and at equal intervals.

9. A double-shielded transformer according to claim 7, characterized in that: The secondary connecting portion is provided with a plurality of second grooves in a row and at equal intervals.

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