Clamp magnetic shield convenient for assembling transformer body

Abstract

The utility model relates to a clamp magnetic shield convenient to assemble a device body, which comprises a magnetic shield and a clamp, the clamp extends along the up-down direction, the magnetic shield penetrates through the clamp along the left-right direction and extends to the left side of the clamp, and the front side and the rear side of the magnetic shield are respectively connected with a clamping plate extending along the vertical direction through bolts. The clamping plate is fixedly arranged on the right end face of the clamping piece, a fixing plate is fixedly arranged on the lower end face of the clamping plate and extends in the length direction of the magnetic shield, the magnetic shield is supported on the fixing plate, the fixing plate is installed on the transformer body, and the magnetic shield comprises a silicon steel sheet integrated body. The silicon steel sheet integrated body is provided with a conductive copper plate which penetrates through the silicon steel sheet integrated body along the length direction of the silicon steel sheet integrated body, the periphery of the silicon steel sheet integrated body is wrapped with a wrapping copper plate, and the wrapping copper plate is fixedly connected with a transverse plate which extends along the width direction of the magnetic shield. And magnetic shielding is prevented from becoming a weak point for pressing the transformer body.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to the field of clamping piece magnetic shielding, and specifically refers to a clamping piece magnetic shielding which is convenient for assembling a transformer body. Background Art

[0002] Performing clamp magnetic shielding treatment on the transformer core is a necessary means to ensure the safe operation of the transformer core. Therefore, the clamp magnetic shielding device for the transformer core is an important transformer component. In the existing clamp magnetic shielding device for the transformer core, when the transformer core clamp is installed with the clamp magnetic shielding, the clamp magnetic shielding is placed without probing into the final stage of the core, and is a trapezoidal fixed structure with two holes, which cannot effectively reduce the stray loss caused by the leakage magnetic field to the final iron core sheet and the core web, and there is local overheating, which affects the clamp magnetic shielding treatment effect on the transformer core. At the same time, the clamp magnetic shielding is a trapezoidal drilled two-hole structure, and the shear drilling process is complicated.

[0003] Although the application document with application number 2017207325959 provides a clamp magnetic shielding device for transformer core, the current installation of the clamp magnetic shielding device is in direct contact with the device body gasket. When the transformer is assembled, it is limited by the size of the device body and the size of the clamp magnetic shielding. The placement of the pressure cylinder is limited, and the clamping effect is not good, which has a great impact on the assembly and one-time pressing of the device body. Moreover, due to the structural limitations of the clamp magnetic shielding, the clamp magnetic shielding is directly involved in the pressing of the device body. When the pressing force is large or there is a requirement for short-circuit resistance, the clamp magnetic shielding can easily become a weak point in the pressing of the device body, affecting the overall stability of the device body. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a clamping magnetic shield which is convenient for assembling a device body, can ensure the stability of the entire device body and prevent the magnetic shield from becoming a weak point of the device body being compressed.

[0005] The utility model is realized through the following technical scheme, providing a clamp magnetic shield that is convenient for assembly of a device body, including a clamp, a plurality of clamping plates are fixedly arranged on the right end surface of the clamp, a magnetic shield installation space is formed between adjacent clamping plates, a fixing plate is fixedly arranged on the lower end of the clamp, the fixing plate is installed on the device body, a magnetic shield installed in the magnetic shield installation space is supported on the upper end surface of the fixing plate, the magnetic shield passes through the clamp and extends to the transformer core, and the front and rear ends of the magnetic shield are respectively fixedly connected to the clamping plates.

[0006] The utility model performs magnetic shielding on the transformer core by arranging a magnetic shield, and arranges a clamp to install the magnetic shield. The clamping plates on the clamping plates are located on the front and rear sides of the magnetic shield, and the magnetic shield can be fixed in the front and rear directions to avoid the magnetic shield from moving in the front and rear directions. The clamping plates are fixed to the magnetic shield by bolts to avoid the magnetic shield from moving in the left and right directions. A fixing plate is arranged at the lower end of the magnetic shield, and the fixing plate can support the magnetic shield. The side ends of the magnetic shield are fixed to avoid the magnetic shield from being directly involved in the compression of the device body.

[0007] As an optimization, a body pad is installed on the body, and the fixing plate is supported on the body pad. In the setting of this optimization scheme, the body pad can play a buffering and insulating role, and the fixing plate serves as a supporting point for the magnetic shielding, ensuring the stability of the magnetic shielding during operation and reducing the risk of displacement caused by vibration or external force.

[0008] As an optimization, a pressure plate is installed on the body, and the body pad is fixed on the pressure plate by bolts. In the setting of this optimization scheme, the pressure plate can facilitate the installation of the body pad on the body, and the body pad is tightly connected to the pressure plate by bolts, which further enhances the stability of the overall structure.

[0009] As an optimization, the lower section of the clamp is provided with a slot that runs through the clamp in the left-right direction, and the clamp magnetic shield passes through the slot. The setting of this optimization scheme enables the magnetic shield to pass smoothly and extend to the transformer core, simplifies the installation process, and avoids installation difficulties caused by space limitations. At the same time, the design of the slot also ensures the stability and directionality of the magnetic shield during the extension process, and improves the accuracy and efficiency of assembly.

[0010] As an optimization, bolt holes are provided on the front and rear end surfaces of the magnetic shield, and the clamp is fixed to the magnetic shield through bolts extending into the bolt holes. The setting of this optimization scheme ensures a firm connection between the magnetic shield and the clamp. The bolt connection not only improves the strength and stability of the connection, but also facilitates disassembly and maintenance when necessary. The bolts are used to facilitate the connection between the clamp and the magnetic shield.

[0011] As an optimization, each clamp is fixed to the magnetic shield by two bolts arranged on the left and right. In this optimization scheme, each clamp is fixed to the clamp magnetic shield by two bolts, which further enhances the connection strength between the magnetic shield and the clamp, reduces the risk of connection failure caused by loosening or breaking of a single bolt, and improves the uniformity and balance of the connection, ensuring the stability and safety of the magnetic shield during operation.

[0012] The beneficial effects of the utility model are as follows: the utility model adopts a detachable design such as bolt connection, so that the magnetic shield and its related components can be easily disassembled, repaired and adjusted when necessary. At the same time, the magnetic shield can be supported by setting a fixing plate to avoid the magnetic shield from being directly involved in the compression of the device body. Through the careful design of components such as clamps, clamps and fixing plates, a space specifically used for installing the magnetic shield is formed, making the installation process of the magnetic shield simpler and faster. At the same time, the precise matching and positioning between the components also ensure that the magnetic shield can be accurately and stably installed on the transformer core, thereby improving the accuracy of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation of the utility model;

[0014] Figure 2 It is a schematic diagram of the connection between the clamping plate and the magnetic shield;

[0015] Figure 3 This is a view of the magnetic shielding structure;

[0016] Figure 4 It is the front view of magnetic shield;

[0017] As shown in the figure:

[0018] 1. Device body, 2. Pressing plate, 3. Device body pad, 4. Fixing plate, 5. Magnetic shielding, 51. Wrapped copper plate, 52. Horizontal plate, 53. Silicon steel sheet integrated board, 54. Conductive copper plate, 6. Clamp, 7. Clamp, 8. Notch. DETAILED DESCRIPTION

[0019] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0020] like Figures 1 to 4 The utility model shown is a clamp magnetic shield that is easy to assemble the device body, including a clamp 7 located on the right side of the transformer core, the clamp 7 extends in the up and down direction, the lower section of the clamp is provided with a slot 8 that penetrates the clamp in the left and right direction, the slot 8 extends downward to the lower end face of the clamp 7, a plurality of clamps 6 are fixedly provided on the right end face of the clamp, and a magnetic shielding installation space is formed between adjacent clamps, the clamp is fixed on the right end face of the clamp 7, the lower end face of the clamp 6 extends to below the lower end face of the clamp 7, two clamps 6 are fixed on the clamp 7, the two clamps 6 are respectively arranged on the front and rear sides of the slot, the clamp is triangular, and the left end face of the clamp is fixedly connected to the right end face of the clamp 7.

[0021] A fixing plate 4 is fixed to the lower end of the splint 6. The fixing plate extends in the left-right direction. The front-to-back length of the fixing plate is greater than the front-to-back length of the splint 6. The left end face of the fixing plate extends to the bottom of the slot. The fixing plate is installed on the body. A body pad 3 extending in the horizontal direction is installed on the body 1. The fixing plate 4 is supported on the upper end face of the body pad 3.

[0022] A pressure plate 2 is installed on the device body 1. The pressure plate 2 extends in the horizontal direction and is fixedly connected to the device body. A lower circular hole extending in the up-down direction is provided on the upper end surface of the pressure plate. A positioning hole penetrating the device body pad along the up-down direction is provided on the upper end surface of the device body pad. The positioning hole is coaxially arranged with the lower circular hole. The device body pad 3 is installed on the upper end surface of the pressure plate 2. The device body pad 3 is connected to the pressure plate 2 by bolts passing through the positioning hole and the lower circular hole. A magnetic shield 5 installed in the magnetic shield installation space is supported on the upper end face of the fixed plate 4. The magnetic shield 5 extends in the left and right directions. The rear end face of the front fixed plate extends to the rear of the front end face of the magnetic shield, and the front end face of the rear fixed plate extends to the front of the rear end face of the magnetic shield 5. The lower end face of the clamp 7 is located between the lower end face and the upper end face of the magnetic shield. The magnetic shield 5 passes through the clamp 7 and extends to the transformer core. The front and rear lengths of the slot 8 are equal to the front and rear lengths of the magnetic shield. The magnetic shield passes through the slot 8, and the front and rear end faces of the magnetic shield are respectively fitted with the front and rear end faces of the slot 8.

[0023] Bolt holes are provided on the front and rear end surfaces of the shield 5. The clamping plate is fixed to the magnetic shield by bolts extending into the bolt holes. Each clamping plate is fixed to the magnetic shield by two bolts arranged on the left and right. The two bolt holes are arranged in the left and right directions. A through hole extending in the front and rear directions is provided on the front end surface of the clamping plate. The through hole and the bolt hole are coaxially arranged. The magnetic bolt passes through the through hole and extends into the bolt hole, so that the front and rear ends of the magnetic shield 5 are respectively fixed to the clamping plate 6 by bolts.

[0024] The magnetic shield 5 includes a silicon steel sheet assembly 53, which is a prior art. The silicon steel sheet assembly 53 is an assembly of silicon steel sheets and a curing agent. A conductive copper plate 54 is provided on the silicon steel sheet assembly and penetrates the silicon steel sheet assembly 53 along the length direction of the silicon steel sheet assembly 53. The outer periphery of the silicon steel sheet assembly is wrapped with a wrapping copper plate 51, and two conductive openings are provided on the wrapping copper plate 51. The two conductive openings are respectively located on the left end face and the right end face of the wrapping copper plate. The conductive copper plate 54 extends from the conductive opening on the left side to the conductive opening on the right side. The wrapping copper plate 51 is fixedly connected to a horizontal plate 52 extending along the width direction of the magnetic shielding, and the lower end face of the horizontal plate is fixedly connected to the upper end face of the wrapping copper plate 51 by bolts.

[0025] During use of this embodiment, the device body pad 3 and the pressure plate 2 are fixedly connected by bolts, the fixing plate 4 is placed on the device body pad 3, the fixing plate 4 and the clamp 6 are welded, the connected fixing plate and the clamp are placed on the device body pad, the magnetic shield is placed on the fixing plate 4, the magnetic shield 5 is pushed so that the magnetic shield passes through the slot 8 of the clamp 7, and the left end face of the magnetic shield is located on the left side of the left end face of the clamp 7, the bolt holes on the magnetic shield are aligned with the through holes on the clamp, and the magnetic shield is fixed to the clamp 7 with bolts. The magnetic shield can be freely removed when the device body is installed.

[0026] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A magnetic shielding device for facilitating the assembly of a device body, characterized in that: The invention comprises a clamp (7), a plurality of clamping plates (6) are fixedly arranged on the right end surface of the clamp, a magnetic shielding installation space is formed between adjacent clamping plates, a fixing plate (4) is fixedly arranged on the lower end of the clamping plate, the fixing plate is installed on the device body, a magnetic shield (5) installed in the magnetic shielding installation space is supported on the upper end surface of the fixing plate (4), the magnetic shield (5) passes through the clamp (7) and extends to the transformer core, and the front and rear ends of the magnetic shield (5) are respectively fixedly connected to the clamping plates (6).

2. A magnetic shielding device for facilitating the assembly of a device body according to claim 1, characterized in that: The lower section of the clamping plate is provided with a slot (8) penetrating the clamping plate in the left-right direction, and the magnetic shield passes through the slot.

3. A magnetic shielding device for facilitating the assembly of a device body according to claim 1, characterized in that: A device body cushion block (3) is installed on the device body, and the fixing plate (4) is supported on the device body cushion block (3).

4. A magnetic shielding device for facilitating the assembly of a device body according to claim 3, characterized in that: A pressure plate (2) is installed on the device body, and a device body cushion block (3) is fixed on the pressure plate (2) by means of bolts.

5. A magnetic shielding device for facilitating the assembly of a device body according to claim 1, characterized in that: Bolt holes are provided on the front and rear end surfaces of the magnetic shield, and the clamping plate is fixedly connected to the magnetic shield by bolts extending into the bolt holes.

6. A magnetic shielding device for facilitating the assembly of a device body according to claim 5, characterized in that: Each clamping plate is fixed to the magnetic shield by two bolts arranged on the left and right.

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