Magnetic shielding fixing structure, magnetic shielding assembly and transformer

Abstract

The utility model provides a magnetic shielding fixing structure, a magnetic shielding assembly and a transformer. The magnetic shielding fixing structure is used for fixing a magnetic shielding structure, and the magnetic shielding fixing structure comprises a supporting structure which is provided with a mounting groove which is used for accommodating the magnetic shielding structure; the insulating structure is positioned above the supporting structure; and the corner protection structure is arranged in the mounting groove, and at least part of the corner protection structure is located between the edge of the magnetic shielding structure and the inner surface of the mounting groove. According to the utility model, the problems that the production cost is increased and the operation is complicated due to the fixing mode of the magnetic shielding structure in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power transformers, and in particular to a magnetic shielding fixing structure, a magnetic shielding component and a transformer. Background Art

[0002] At present, during the operation of the transformer, most of the magnetic flux flows in the iron core, which is called the main magnetic flux, but there is also leakage magnetic flux outside the iron core, and as the capacity and voltage level increase, the transformer leakage magnetic flux also increases. Due to the existence of leakage magnetic flux, various structural parts of the transformer (oil tank, clamps, etc.) are prone to local overheating, thermal aging of insulation materials, cracking and breakdown of transformer oil, etc., which seriously affect the operating reliability and life of the transformer. In order to solve the above problems, a magnetic shielding structure is set on the transformer, and the leakage magnetic flux passes through a specific magnetic path, fundamentally reducing the leakage magnetic flux flowing through the structural parts. Since the transformer vibrates during operation, the magnetic shielding structure will also shake.

[0003] In the prior art, the magnetic shielding structure is fixed mainly in the following two ways:

[0004] 1) Slot the pressure plate and the support plate respectively, and place the magnetic shielding structure in the pressure plate slot and the support plate slot respectively. However, this fixing method easily leads to excessive thickness of the pressure plate and the support plate, increases the production cost of the material, and this structure is only applicable to single-phase three-column transformers.

[0005] 2) Clamping the transformer on the upper pressure plate and the lower support plate with fasteners (such as bolts). However, since the fasteners (such as bolts) are located in the leakage magnetic field, the transformer loss will be increased. In addition, the above fixing method makes the overall installation operation of the transformer more complicated. Utility Model Content

[0006] The main purpose of the utility model is to provide a magnetic shielding fixing structure, a magnetic shielding assembly and a transformer, so as to solve the problem that the fixing method of the magnetic shielding structure in the prior art increases the production cost and complicates the operation.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a magnetic shielding fixing structure is provided for fixing the magnetic shielding structure, and the magnetic shielding fixing structure includes: a supporting structure having a mounting groove, and the mounting groove is used to accommodate the magnetic shielding structure; an insulating structure, and the insulating structure is located above the supporting structure; and a corner protection structure, which is arranged in the mounting groove, and at least part of the corner protection structure is located between the edge of the magnetic shielding structure and the inner surface of the mounting groove.

[0008] Further, one edge of the magnetic shielding structure is in the installation groove, and there is one corner protection structure; or, multiple edges of the magnetic shielding structure are in the installation groove, and there are multiple corner protection structures, and the multiple corner protection structures are arranged one-to-one corresponding to the multiple edges.

[0009] Furthermore, the corner protection structure includes: a first plate body, which is in contact with one surface of the magnetic shielding structure forming an edge; a second plate body, which is arranged at an angle with the first plate body and in contact with another surface of the magnetic shielding structure forming an edge; and an arc plate, wherein the first plate body is connected to the second plate body through the arc plate, and at least a portion of the arc plate is arranged opposite to the edge.

[0010] Furthermore, the mounting groove is at least one of a U-shaped groove, an arc-shaped groove and a rectangular groove.

[0011] Furthermore, the support structure includes: a support plate; a first limit bar, arranged on one end of the support plate; a second limit bar, arranged on the other end of the support plate and arranged opposite to the first limit bar; wherein an installation groove is formed around the support plate, the first limit bar and the second limit bar, and the first limit bar is located between the second limit bar and the clamp; an exhaust groove is arranged on the first limit bar, and the extension direction of the exhaust groove is consistent with the extension direction of the magnetic shielding structure.

[0012] Furthermore, an oil through hole is provided on the first limiting strip, and the oil through hole is communicated with the exhaust groove and passes through the first limiting strip.

[0013] Further, the insulating structure has a first gap; and / or the supporting structure has a second gap.

[0014] Furthermore, there are multiple support structures, and the multiple support structures are arranged at intervals along a preset direction, and the preset direction is consistent with the extension direction of the magnetic shielding structure.

[0015] According to another aspect of the utility model, a magnetic shielding assembly is provided, including a magnetic shielding structure and a magnetic shielding fixing structure, wherein the magnetic shielding fixing structure is used to limit and fix the magnetic shielding structure; wherein the magnetic shielding fixing structure is the magnetic shielding fixing structure mentioned above.

[0016] According to another aspect of the utility model, a transformer is provided, comprising: a body assembly, comprising a coil, a pressure plate and a support plate, the pressure plate being located above the support plate to press the coil onto the support plate; an iron core assembly, comprising an iron core and a clamp, the iron core being sleeved outside the coil, the clamp being used to fix the coil onto the iron core; at least two magnetic shielding assemblies, at least one magnetic shielding assembly being mounted on a surface of the pressure plate facing away from the support plate, and at least another magnetic shielding assembly being mounted on a surface of the support plate facing away from the pressure plate; wherein the magnetic shielding assembly is the above-mentioned magnetic shielding assembly.

[0017] By applying the technical solution of the utility model, the magnetic shielding fixing structure is used to fix the magnetic shielding structure, and the magnetic shielding fixing structure includes a supporting structure, an insulating structure and a corner protection structure. The supporting structure has a mounting groove, and the mounting groove is used to accommodate the magnetic shielding structure. The insulating structure is located above the supporting structure. The corner protection structure is arranged in the mounting groove, and at least part of the corner protection structure is located between the edge of the magnetic shielding structure and the inner surface of the mounting groove. In this way, the magnetic shielding structure is pressed and fixed by the supporting structure and the insulating structure to effectively limit the magnetic shielding structure, prevent the magnetic shielding structure from vibrating and shaking synchronously with the transformer body and affecting the overall structural stability of the transformer, and also improve the user experience. At the same time, the corner protection structure can improve the electric field distribution at the edges of the magnetic shielding structure, thereby reducing leakage flux.

[0018] Compared with the two methods of fixing the magnetic shielding structure in the prior art, the magnetic shielding fixing structure in the present application has a simple structure and is easy to disassemble and assemble, thereby solving the problem of increased production cost and complex operation of the fixing method of the magnetic shielding structure in the prior art, reducing the processing cost and difficulty of the transformer, and also reducing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a transformer according to the utility model is shown;

[0021] Figure 2 Shows Figure 1 The enlarged schematic diagram of the transformer at point A;

[0022] Figure 3 Shows Figure 1 The main view of the transformer in FIG.

[0023] Figure 4 Shows Figure 1 A side view of the transformer in FIG.

[0024] Figure 5 Shows Figure 4 The enlarged schematic diagram of the transformer at B;

[0025] Figure 6 A schematic diagram of the three-dimensional structure of the support structure of the embodiment of the magnetic shielding fixing structure according to the utility model is shown;

[0026] Figure 7 Shows Figure 6A side view of a support structure of a magnetic shield fixing structure;

[0027] Figure 8 A front view of a corner protection structure according to an embodiment of a magnetic shielding fixing structure of the utility model is shown;

[0028] Fig. 9 Shows Figure 8 A side view of a corner protection structure of a magnetic shield fixing structure;

[0029] Fig.10 A front view of an insulating structure according to an embodiment of a magnetic shielding fixing structure of the utility model is shown.

[0030] The above drawings include the following reference numerals:

[0031] 10. Magnetic shielding structure; 11. Edges;

[0032] 20. Support structure; 21. Mounting groove; 22. Support plate; 23. First limiting strip; 231. Exhaust groove; 232. Oil hole; 24. Second limiting strip; 25. Second notch;

[0033] 30. Insulation structure; 31. First gap;

[0034] 40. Corner protection structure; 41. First plate body; 42. Second plate body; 43. Arc plate;

[0035] 50. Clamps;

[0036] 60. Coil;

[0037] 70. Pressing plate;

[0038] 80. Pallet;

[0039] 90. Iron core;

[0040] 100. Angle plate. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0043] In the present invention, unless otherwise specified, directional words such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0044] In order to solve the problem that the fixing method of the magnetic shielding structure in the prior art increases the production cost and complicates the operation, the present application provides a magnetic shielding fixing structure, a magnetic shielding assembly and a transformer.

[0045] like Figures 1 to 10 As shown, the magnetic shielding fixing structure is used to fix the magnetic shielding structure 10, and the magnetic shielding fixing structure includes a support structure 20, an insulating structure 30 and a corner protection structure 40. Among them, the support structure 20 has a mounting groove 21, and the mounting groove 21 is used to accommodate the magnetic shielding structure 10. The insulating structure 30 is located above the support structure 20. The corner protection structure 40 is arranged in the mounting groove 21, and at least part of the corner protection structure 40 is located between the edge 11 of the magnetic shielding structure 10 and the inner surface of the mounting groove 21.

[0046] By applying the technical solution of this embodiment, the magnetic shielding structure 10 is pressed and fixed by the support structure 20 and the insulating structure 30, so as to effectively limit the magnetic shielding structure 10, prevent the magnetic shielding structure 10 from vibrating and shaking synchronously with the transformer body and affecting the overall structural stability of the transformer, and also improve the user experience. At the same time, the corner protection structure 40 can improve the electric field distribution at the edge 11 of the magnetic shielding structure 10, thereby reducing the leakage flux.

[0047] Compared with the two methods of fixing the magnetic shielding structure in the prior art, the magnetic shielding fixing structure in this embodiment has a simple structure and is easy to disassemble and assemble, thereby solving the problem of increased production cost and complex operation of the fixing method of the magnetic shielding structure in the prior art, reducing the processing cost and difficulty of the transformer, and also reducing the labor intensity of the staff.

[0048] In this embodiment, the mounting groove 21 can limit and stop the magnetic shielding structure 10 , and the insulating structure 30 is pressed onto the magnetic shielding structure 10 .

[0049] In this embodiment, since a large capacity and high voltage power transformer has a large leakage magnetic field, in order to reduce the loss of the leakage magnetic flux to the clamp 50 and the oil tank, it is necessary to place a magnetic shielding structure 10 at the upper and lower ends of the coil 60 to change the magnetic path.

[0050] In this embodiment, the insulating structure 30 is a rectangular laminated paperboard, the supporting structure 20 is a laminated paperboard, and the corner protection structure 40 is a pulp piece.

[0051] Optionally, one edge 11 of the magnetic shielding structure 10 is in the mounting groove 21, and there is one corner protection structure 40; or, multiple edges 11 of the magnetic shielding structure 10 are in the mounting groove 21, and there are multiple corner protection structures 40, and the multiple corner protection structures 40 are arranged one-to-one with the multiple edges 11. In this way, the number of corner protection structures 40 is adjusted according to the matching relationship between the magnetic shielding structure 10 and the magnetic shielding fixing structure, so that the magnetic shielding fixing structure can fix different types of magnetic shielding structures 10, thereby improving the versatility of the magnetic shielding structure. At the same time, the above-mentioned setting makes the selection of the number of corner protection structures 40 more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff.

[0052] In this embodiment, the magnetic shielding structure 10 is a rectangular bar, and the two edges 11 of the magnetic shielding structure 10 are in the installation groove 21. There are two corner protection structures 40, and the two corner protection structures 40 are arranged one-to-one corresponding to the two edges 11, thereby improving the fixing stability of the magnetic shielding fixing structure to the magnetic shielding structure 10.

[0053] It should be noted that the number of the corner protection structures 40 is not limited thereto and can be adjusted according to working conditions and usage requirements. Optionally, the number of the corner protection structures 40 is three, four, five, six, or more.

[0054] like Fig. 9 As shown, the corner protection structure 40 includes a first plate body 41, a second plate body 42 and an arc plate 43. The first plate body 41 contacts one surface of the edge 11 formed by the magnetic shielding structure 10. The second plate body 42 is arranged at an angle with the first plate body 41 and contacts another surface of the edge 11 formed by the magnetic shielding structure 10. The first plate body 41 is connected to the second plate body 42 through the arc plate 43, and at least part of the arc plate 43 is arranged opposite to the edge 11. Optionally, the second plate body 42 and the first plate body 41 are arranged perpendicular to each other. In this way, the above arrangement makes the structure of the corner protection structure 40 simpler, easier to process and realize, and reduces the processing cost and difficulty of the corner protection structure 40; on the other hand, it increases the contact area between the corner protection structure 40 and the magnetic shielding structure 10, further improves the electric field distribution at the edge 11 of the magnetic shielding structure 10, so as to reduce the leakage magnetic flux. At the same time, the above arrangement of the arc plate 43 can prevent the corner protection structure 40 from generating sharp corners or sharp edges to cut or scratch the staff.

[0055] Optionally, the mounting groove 21 is at least one of a U-shaped groove, an arc groove and a rectangular groove. In this way, the above arrangement makes the shape of the mounting groove 21 more flexible to meet different use requirements and working conditions, and also improves the processing flexibility of the staff.

[0056] In this embodiment, the installation groove 21 is a rectangular groove. Thus, the above arrangement makes the structure of the installation groove 21 simpler, easier to process and realize, and reduces the processing cost and difficulty of the installation groove 21.

[0057] like Figure 6 and Figure 7 As shown, the support structure 20 includes a support plate 22, a first limiting strip 23 and a second limiting strip 24. The first limiting strip 23 is arranged on one end of the support plate 22, and the second limiting strip 24 is arranged on the other end of the support plate 22 and is arranged opposite to the first limiting strip 23. Among them, the support plate 22, the first limiting strip 23 and the second limiting strip 24 are surrounded by a mounting groove 21, and the first limiting strip 23 is located between the second limiting strip 24 and the clamp 50. An exhaust groove 231 is arranged on the first limiting strip 23, and the extension direction of the exhaust groove 231 is consistent with the extension direction of the magnetic shielding structure 10. In this way, considering the drying quality, the exhaust groove 231 is arranged on the side of the support structure 20 close to the clamp 50 to ensure that the gas will not be collected in the drying process. At the same time, the above-mentioned arrangement makes the structure of the support structure 20 simpler, easier to process and realize, and reduces the processing cost and difficulty of the support structure 20.

[0058] like Figure 6 As shown, the first limit strip 23 is provided with an oil hole 232, which is communicated with the exhaust groove 231 and passes through the first limit strip 23. In this way, lubricating oil can enter the transformer through the oil hole 232 to ensure that the transformer can operate normally. At the same time, the above arrangement makes the processing of the oil hole 232 easier and simpler, reducing the processing difficulty of the staff.

[0059] Optionally, there is one oil through hole 232 ; or, there are multiple oil through holes 232 , and the multiple oil through holes 232 are arranged at intervals along the extension direction of the exhaust groove 231 .

[0060] Optionally, the insulating structure 30 has a first notch 31; and / or the supporting structure 20 has a second notch 25. In this way, the above-mentioned arrangement of the first notch 31 and / or the second notch 25 can reduce the length of the insulating structure 30 and / or the supporting structure 20 beyond the pressing plate 70 and the supporting plate 80, thereby saving production costs while ensuring the strength of the supporting structure 20 during the press-fitting process of the body assembly.

[0061] In this embodiment, the insulating structure 30 is a rectangular structure and has a first notch 31 , and the supporting structure 20 is a rectangular structure and has a second notch 25 .

[0062] Optionally, there are multiple support structures 20, and the multiple support structures 20 are arranged at intervals along a preset direction, and the preset direction is consistent with the extension direction of the magnetic shielding structure 10. In this way, the above arrangement improves the fixing stability of the magnetic shielding fixing structure to the magnetic shielding structure 10, and avoids the displacement or movement of the magnetic shielding structure 10, which causes an increase in leakage flux.

[0063] In this embodiment, a groove is opened in the middle of the support structure 20 so that the magnetic shielding structure 10 can fall into the groove when the body assembly is press-assembled, thereby increasing the limiting effect of the support structure 20 and preventing the magnetic shielding structure 10 from moving due to vibration generated during the operation of the transformer.

[0064] The present application also provides a magnetic shielding assembly, including a magnetic shielding structure 10 and a magnetic shielding fixing structure, wherein the magnetic shielding fixing structure is used to limit and fix the magnetic shielding structure 10. The magnetic shielding fixing structure is the above-mentioned magnetic shielding fixing structure.

[0065] In this embodiment, the interior of the magnetic shielding structure 10 is made of stacked silicon steel sheets.

[0066] like Figures 1 to 5 As shown, the present application also provides a transformer, including a body component, a core component and at least two magnetic shielding components. The body component includes a coil 60, a pressure plate 70 and a support plate 80, the pressure plate 70 is located above the support plate 80 to press the coil 60 onto the support plate 80, the core component includes an iron core 90 and a clamp 50, the iron core 90 is sleeved outside the coil 60, and the clamp 50 is used to fix the coil 60 on the iron core 90. At least one magnetic shielding component is installed on the surface of the pressure plate 70 away from the support plate 80, and at least another magnetic shielding component is installed on the surface of the support plate 80 away from the pressure plate 70. Among them, the magnetic shielding component is the above-mentioned magnetic shielding component.

[0067] Specifically, the coil 60 is inserted into the iron core 90, and a pressing plate 70 and a supporting plate 80 are placed at the upper and lower ends of the coil 60, respectively. The coil 60 is fixed to the iron core 90 through the body press-fitting process with the help of the angle plate 100 on one side of the clamp 50. Since there is a large leakage flux in high-voltage and large-capacity transformers, the leakage flux presents a closed characteristic in space. In order to prevent it from passing through the surrounding metal parts and causing loss, the magnetic shielding components are placed above the pressing plate 70 and below the supporting plate 80 to change the leakage flux path. At the same time, an insulating structure 30 is placed between the magnetic shielding structure 10 and the angle plate 100 for insulation. The iron core 90 is made of stacked silicon steel sheets, the clamp 50 is welded by triangular reinforcing iron and rectangular support plates, and the coil 60 is a cylindrical tube structure with a certain radial size and wound with copper wire. The pressing plate 70 and the supporting plate 80 are circular laminated paperboards. Concentric holes are provided on the pressing plate 70 to facilitate the core column of the iron core 90 to pass through. The pressing plate 70 and the supporting plate 80 are placed at the top and bottom ends of the coil 60 respectively.

[0068] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0069] The magnetic shielding fixing structure is used to fix the magnetic shielding structure, and the magnetic shielding fixing structure includes a supporting structure, an insulating structure and a corner protection structure. The supporting structure has a mounting groove, and the mounting groove is used to accommodate the magnetic shielding structure. The insulating structure is located above the supporting structure. The corner protection structure is arranged in the mounting groove, and at least part of the corner protection structure is located between the edge of the magnetic shielding structure and the inner surface of the mounting groove. In this way, the magnetic shielding structure is pressed and fixed by the supporting structure and the insulating structure to effectively limit the magnetic shielding structure, prevent the magnetic shielding structure from vibrating and shaking synchronously with the transformer body and affecting the overall structural stability of the transformer, and also improve the user experience. At the same time, the corner protection structure can improve the electric field distribution at the edges of the magnetic shielding structure, thereby reducing leakage flux.

[0070] Compared with the two methods of fixing the magnetic shielding structure in the prior art, the magnetic shielding fixing structure in the present application has a simple structure and is easy to disassemble and assemble, thereby solving the problem of increased production cost and complex operation of the fixing method of the magnetic shielding structure in the prior art, reducing the processing cost and difficulty of the transformer, and also reducing the labor intensity of the staff.

[0071] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0074] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A magnetic shield fixing structure, used for fixing a magnetic shield structure (10), characterized in that: The magnetic shielding fixing structure comprises: A support structure (20) having a mounting groove (21), wherein the mounting groove (21) is used to accommodate the magnetic shielding structure (10); an insulating structure (30), the insulating structure (30) being located above the supporting structure (20); A corner protection structure (40) is arranged in the installation groove (21), and at least a portion of the corner protection structure (40) is located between the edge (11) of the magnetic shielding structure (10) and the inner surface of the installation groove (21).

2. The magnetic shielding fixing structure according to claim 1, characterized in that: One edge (11) of the magnetic shielding structure (10) is in the mounting groove (21), and there is one corner protection structure (40); or, multiple edges (11) of the magnetic shielding structure (10) are in the mounting groove (21), and there are multiple corner protection structures (40), and the multiple corner protection structures (40) are arranged in a one-to-one correspondence with the multiple edges (11).

3. The magnetic shielding fixing structure according to claim 1, characterized in that: The corner protection structure (40) comprises: A first plate (41) in contact with a surface of the magnetic shielding structure (10) forming the edge (11); A second plate (42) is arranged at an angle with the first plate (41) and is in contact with another surface of the magnetic shielding structure (10) forming the edge (11); An arc-shaped plate (43), wherein the first plate body (41) is connected to the second plate body (42) via the arc-shaped plate (43), and at least a portion of the arc-shaped plate (43) is arranged opposite to the edge (11).

4. The magnetic shielding fixing structure according to claim 1, characterized in that: The installation groove (21) is at least one of a U-shaped groove, an arc-shaped groove and a rectangular groove.

5. The magnetic shielding fixing structure according to claim 1, characterized in that: The support structure (20) comprises: Support plate (22); A first limiting strip (23) is arranged on one end of the support plate (22); A second limiting strip (24) is arranged on the other end of the support plate (22) and is arranged opposite to the first limiting strip (23); The mounting groove (21) is formed between the support plate (22), the first limiting strip (23) and the second limiting strip (24), and the first limiting strip (23) is located between the second limiting strip (24) and the clamp (50); an exhaust groove (231) is provided on the first limiting strip (23), and an extension direction of the exhaust groove (231) is consistent with an extension direction of the magnetic shielding structure (10).

6. The magnetic shielding fixing structure according to claim 5, characterized in that: The first limiting strip (23) is provided with an oil through hole (232), and the oil through hole (232) is communicated with the exhaust groove (231) and passes through the first limiting strip (23).

7. The magnetic shielding fixing structure according to claim 1, characterized in that: The insulating structure (30) has a first notch (31); and / or the supporting structure (20) has a second notch (25).

8. The magnetic shielding fixing structure according to claim 1, characterized in that: There are a plurality of the support structures (20), and the plurality of the support structures (20) are arranged at intervals along a preset direction, wherein the preset direction is consistent with an extension direction of the magnetic shielding structure (10).

9. A magnetic shielding assembly, characterized in that: It comprises a magnetic shielding structure (10) and a magnetic shielding fixing structure, wherein the magnetic shielding fixing structure is used to limit and fix the magnetic shielding structure (10); wherein the magnetic shielding fixing structure is the magnetic shielding fixing structure according to any one of claims 1 to 8.

10. A transformer, characterized in that: include: A body assembly comprises a coil (60), a pressing plate (70) and a supporting plate (80), wherein the pressing plate (70) is located above the supporting plate (80) to press the coil (60) onto the supporting plate (80); An iron core assembly, comprising an iron core (90) and a clamp (50), wherein the iron core (90) is sleeved outside the coil (60), and the clamp (50) is used to fix the coil (60) on the iron core (90); at least two magnetic shielding components, at least one of the magnetic shielding components is mounted on a surface of the pressing plate (70) facing away from the supporting plate (80), and at least another magnetic shielding component is mounted on a surface of the supporting plate (80) facing away from the pressing plate (70); Wherein, the magnetic shielding assembly is the magnetic shielding assembly described in claim 9.

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