A low load loss transformer

Abstract

The application discloses a low-load-loss transformer, relates to the technical field of power systems, and comprises a core assembly, a coil assembly and an adjusting device, wherein the adjusting device comprises a pressing block, a pad block and an adjusting paperboard, the pressing block is connected with the core assembly, the pad block is abutted against the coil assembly, the adjusting paperboard is arranged between the pressing block and the pad block, and the adjusting paperboard is in interference fit with the pressing block and the pad block. According to the technical scheme, the pad block is abutted against the coil assembly, the adjusting paperboard is arranged between the pressing block and the pad block, and the adjusting paperboard is in interference fit with the pressing block and the pad block, so that the distance between the coil assembly and the core assembly can be increased, the area of the core assembly in a leakage magnetic flux area is reduced, the eddy current loss induced in the core assembly is reduced, the winding current density can be reduced without increasing the total amount of the electromagnetic wire, the load loss of the transformer can be effectively controlled to meet the energy efficiency standard, the energy efficiency performance and the economic cost of the transformer can be balanced, and the product market competitiveness is improved.

Description

Technical Field

[0001] This application relates to the field of power system technology, and in particular to a low-load-loss transformer. Background Technology

[0002] As a key piece of equipment in the power system, the energy efficiency of transformers directly affects the economic operation of the entire power grid. In recent years, with the country's increasing requirements for energy conservation and emission reduction, transformer products need to meet higher energy efficiency standards, with particularly stringent control over load losses.

[0003] In existing technologies, reducing transformer load losses is typically achieved by decreasing the current density, i.e., increasing the conductor cross-sectional area in the winding design. However, this method leads to a significant increase in the amount of electromagnetic wire used, thereby increasing equipment costs and negatively impacting the product's economic viability and market competitiveness. Utility Model Content

[0004] The purpose of this application is to provide a low-load-loss transformer, which aims to solve the technical problem in the prior art that reducing transformer load loss requires a significant increase in the amount of electromagnetic wire, leading to increased costs.

[0005] To achieve the above objectives, this application provides a low-load-loss transformer, which includes a core assembly, a coil assembly, and an adjustment device. The adjustment device includes a pressure block, a pad, and an adjustment plate. The pressure block is connected to the core assembly, the pad abuts against the coil assembly, and the adjustment plate is disposed between the pressure block and the pad, with the adjustment plate being interference-fitted with the pressure block and the pad.

[0006] In one embodiment, the core assembly includes a core, a web, and a support plate. The web is disposed on both sides of the core, the web is fixedly connected to the support plate, and the support plate is connected to the pressure block.

[0007] In one embodiment, the pressure block has a slot at one end facing the support plate, and the support plate engages with the slot.

[0008] In one embodiment, the support plate includes a plate body and a positioning pin. The positioning pin is disposed at one end of the support plate facing the pressure block. The slot includes a slot bottom and a slot wall. The slot bottom has a positioning hole. The positioning pin cooperates with the positioning hole, and the slot wall engages with the support plate.

[0009] In one embodiment, the adjusting device further includes a connector. The pressure block has a first connecting hole, the adjusting cardboard has a second connecting hole, and the pad has a third connecting hole. The first connecting hole, the second connecting hole, and the third connecting hole all pass through in a direction perpendicular to the axis of the core. The connector passes through the first connecting hole, the second connecting hole, and the third connecting hole, and the connector fixes the pressure block, the adjusting cardboard, and the pad together.

[0010] In one embodiment, the axes of the first connecting hole, the second connecting hole, and the third connecting hole are kept collinear.

[0011] In one embodiment, the connector is a cable tie.

[0012] In one embodiment, the connector is a bolt.

[0013] In one embodiment, the coil assembly includes a winding and a pressure plate, one end of the pressure plate being connected to the winding and the other end of the pressure plate abutting against the pad.

[0014] In one embodiment, the number of the adjusting devices is at least two, and the at least two adjusting devices are respectively disposed between the core assembly and the coil assembly.

[0015] The above-mentioned technical solution of this application has at least the following beneficial technical effects: The technical solution of this application increases the distance between the coil assembly and the core assembly by placing a pad against the coil assembly and setting an adjusting plate between the pressure block and the pad. This reduces the area of ​​the core assembly in the leakage flux region, lowers the induced eddy current loss in the core assembly, and reduces the winding current density without increasing the total amount of electromagnetic wire. This effectively controls the transformer load loss to meet energy efficiency standards, helps balance the energy efficiency performance and economic cost of the transformer, and enhances the product's market competitiveness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the low-load-loss transformer provided in this application; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 A side view of an embodiment of a low-load-loss transformer provided in this application.

[0017] Figure label: 100. Transformer; 1. Core assembly; 11. Core; 12. Web plate; 13. Support plate; 2. Coil assembly; 21. Winding; 22. Pressure plate; 3. Adjusting device; 31. Pressure block; 32. Pad block; 33. Adjusting cardboard; 34. Slot; 341. Slot bottom; 342. Slot wall; 35. First connecting hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this application. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this application.

[0019] The embodiments described in this application are only some, not all, of the embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments described herein without inventive effort are within the scope of protection of this application.

[0020] As a key piece of equipment in the power system, the energy efficiency of transformers directly affects the economic operation of the entire power grid. In recent years, with the country's increasing requirements for energy conservation and emission reduction, transformer products need to meet higher energy efficiency standards, with particularly stringent control over load losses.

[0021] In existing technologies, reducing transformer load losses is typically achieved by decreasing the current density, i.e., increasing the conductor cross-sectional area in the winding design. However, this method leads to a significant increase in the amount of electromagnetic wire used, thereby increasing equipment costs and negatively impacting the product's economic viability and market competitiveness.

[0022] To address the aforementioned technical problems, this application provides a low-load-loss transformer. Please refer to [link / reference]. Figures 1 to 3 In one embodiment of this application, the transformer 100 includes a core assembly 1, a coil assembly 2, and an adjustment device 3. The adjustment device 3 includes a pressure block 31, a pad 32, and an adjustment cardboard 33. The pressure block 31 is connected to the core assembly 1, the pad 32 abuts against the coil assembly 2, and the adjustment cardboard 33 is disposed between the pressure block 31 and the pad 32. The adjustment cardboard 33 is interference-fitted with the pressure block 31 and the pad 32. The adjustment cardboard 33 can fill the intermediate layer between the pressure blocks 31 and play a role in filling and adjusting the pressure distribution during the assembly process.

[0023] The technical solution of this application, by placing the pad 32 against the coil assembly 2 and setting the adjusting plate 33 between the pressure block 31 and the pad 32, and by interfering with the pressure block 31 and the pad 32, can increase the distance between the coil assembly 2 and the core assembly 1, thereby reducing the area of ​​the core assembly 1 in the leakage flux region, reducing the induced eddy current loss in the core assembly 1, and reducing the current density of the winding 21 without increasing the total amount of electromagnetic wire, effectively controlling the load loss of the transformer 100 to meet the energy efficiency standards, which is conducive to balancing the energy efficiency performance and economic cost of the transformer 100, and improving the product's market competitiveness.

[0024] Please see Figure 1 In one embodiment, the core assembly 1 includes a core 11, a web 12, and a support plate 13. The web 12 is disposed on both sides of the core 11, and the web 12 is fixedly connected to the support plate 13. The support plate 13 is connected to the pressure block 31. This embodiment, by fixing the web 12 to the support plate 13 and connecting the support plate 13 to the pressure block 31, can effectively reduce the metal portion of the leakage flux region in the core assembly 1, reduce induced eddy current losses, avoid local overheating, and improve the efficiency and stability of the transformer 100. At the same time, the reasonable structural design enhances the mechanical strength of each component, making the transformer 100 more reliable during long-term operation, extending the service life of the equipment, and contributing to improving the working performance and overall energy efficiency of the transformer 100.

[0025] Please see Figure 1 and Figure 2 In one embodiment, a slot 34 is provided at the end of the pressure block 31 facing the support plate 13, and the support plate 13 is engaged with the slot 34. This embodiment, by providing a slot 34 at the end of the pressure block 31 facing the support plate 13 and engaging the support plate 13 with the slot 34, can achieve precise positioning and a stable connection between the two, preventing relative displacement during assembly and operation, which is beneficial to improving the overall stability and vibration resistance of the structure, and ensuring the reliability and safety of the transformer 100 during long-term operation.

[0026] Please see Figure 1 and Figure 2 In one embodiment, the support plate 13 includes a plate body and a positioning pin. The positioning pin is located at the end of the support plate 13 facing the pressure block 31. The slot 34 includes a slot bottom 341 and a slot wall 342. The slot bottom 341 has a positioning hole, which engages with the positioning pin. The slot wall 342 engages with the support plate 13. This embodiment, by setting the positioning pin on the support plate 13 to engage with the positioning hole in the slot bottom 341 of the slot 34, and by engaging the slot wall 342 with the support plate 13, can achieve accurate positioning and secure assembly between components, prevent assembly deviations and loosening, improve the stability and seismic performance of the overall structure, and ensure the safety and reliability of the transformer 100 during long-term operation.

[0027] Please see Figure 1 and Figure 2 In one embodiment, the adjusting device 3 further includes a connector. The pressure block 31 has a first connecting hole 35, the adjusting cardboard 33 has a second connecting hole, and the pad block 32 has a third connecting hole. The first connecting hole 35, the second connecting hole, and the third connecting hole all pass through in a direction perpendicular to the axis of the core 11. The connector passes through the first connecting hole 35, the second connecting hole, and the third connecting hole, and the connector fixes the pressure block 31, the adjusting cardboard 33, and the pad block 32. This embodiment, by providing through connecting holes on the pressure block 31, the adjusting cardboard 33, and the pad block 32 and using a connector for fixation, can achieve a stable connection and uniform force transmission between the components, prevent assembly loosening or positional displacement, improve the reliability and assembly accuracy of the overall structure, and ensure the stability and safety of the transformer 100 during operation.

[0028] Please see Figure 1 and Figure 2 In one embodiment, the axes of the first connecting hole 35, the second connecting hole, and the third connecting hole are kept collinear. By keeping the axes of the first connecting hole 35, the second connecting hole, and the third connecting hole collinear, this embodiment ensures the precise insertion of the connectors and the accurate docking of each component, reduces errors and uneven stress during assembly, and helps improve the stability and reliability of the overall structure, ensuring the high efficiency and long-term use of the transformer 100 during operation.

[0029] In one embodiment, the connector is a bolt. This embodiment, by using bolts as the connector, provides a more robust and reliable connection. Bolts have strong tensile and shear resistance, ensuring a stable connection between the pressure block 31, adjusting cardboard 33, and pad block 32 during use, preventing loosening or displacement. Simultaneously, bolted connections are easy to adjust and maintain, facilitating tightening or disassembly as needed, and offering good reusability and ease of maintenance. Furthermore, bolted connections provide more precise mechanical control, making them suitable for structural applications requiring high precision and stability.

[0030] In one embodiment, the connector is a cable tie. This embodiment provides a simple and effective connection method by using cable ties as the connector. Cable ties have good tensile and fixing capabilities, enabling them to quickly and reliably secure the pressure block 31, adjusting cardboard 33, and pad block 32 together. Compared to traditional bolts or other fasteners, cable ties are not only easier to install but also have better flexibility and adaptability, which can alleviate stress concentration caused by thermal expansion or vibration between components to a certain extent, thereby improving the durability and stability of the overall device.

[0031] Please see Figure 1 and Figure 2In one embodiment, the coil assembly 2 includes a winding 21 and a pressure plate 22. One end of the pressure plate 22 is connected to the winding 21, and the other end of the pressure plate 22 abuts against a pad 32. This embodiment tightly fixes the winding 21 and the pad 32 using the pressure plate 22, ensuring that the winding 21 will not be displaced or loosened due to external forces during operation, thereby improving the stability and overall performance of the coil assembly 2. The cooperation between the pressure plate 22 and the pad 32 provides a buffering effect, reducing mechanical stress caused by vibration or temperature changes and extending the service life of the device. Simultaneously, this structural design simplifies the assembly process, reduces operational difficulty, and helps improve production efficiency and product quality.

[0032] Please see Figure 1 In one embodiment, the number of adjusting devices 3 is at least two, and the at least two adjusting devices 3 are respectively disposed between the core assembly 1 and the coil assembly 2. This embodiment can provide a more uniform adjustment effect, ensuring that the relative position between the core and the coil remains stable throughout the operation. By using multiple adjusting devices 3, the gap between the core and the coil can be effectively controlled and optimized, improving the efficiency and performance of the magnetic circuit. In addition, multiple adjusting devices 3 can cooperate with each other to improve the adjustment accuracy and flexibility of the system, allowing for fine adjustments according to different working requirements, thereby improving the overall stability and adaptability of the equipment.

[0033] In one specific embodiment: When assembling the transformer body of the transformer 100, a jack is first used to pry open the web plate 12 and the pressure plate 22 to achieve a predetermined axial force. The pressure block 31 and the pad block 32 are placed in the designated position. Then, the adjusting cardboard 33 is inserted into the gap between the pressure block 31 and the pad block 32 to fill the gap. In order to prevent the pressure block 31, the adjusting cardboard 33 and the pad block 32 from slipping relative to each other, cable ties are used to pass through the first connecting hole 35, the second connecting hole and the third connecting hole in sequence to tie the pressure block 31, the adjusting cardboard 33 and the pad block 32 into a whole. The pressure block 31, the adjusting cardboard 33 and the pad block 32 together form the adjusting device 3. Finally, the jack is removed so that the core assembly 1 is pressed on the adjusting device 3. The adjusting device 3 can increase the distance between the coil assembly 2 and the core assembly 1, thereby reducing the area of ​​the core assembly 1 in the leakage flux region and reducing the induced eddy current loss in the core assembly 1.

[0034] This application aims to protect a low-load-loss transformer. The technical solution of this application, by placing a pad 32 against the coil assembly 2 and setting an adjusting plate 33 between the pressure block 31 and the pad 32, and by interfering with the pressure block 31 and the pad 32, can increase the distance between the coil assembly 2 and the core assembly 1, thereby reducing the area of ​​the core assembly 1 in the leakage flux region, reducing the induced eddy current loss in the core assembly 1, and reducing the current density of the winding 21 without increasing the total amount of electromagnetic wire. This effectively controls the transformer load loss to meet energy efficiency standards, which is conducive to balancing the energy efficiency performance and economic cost of the transformer 100, and improving the product's market competitiveness.

[0035] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this application and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this application should be included within the protection scope of this application. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A low-load-loss transformer, characterized in that, The device includes a core assembly (1), a coil assembly (2), and an adjustment device (3). The adjustment device (3) includes a pressure block (31), a pad (32), and an adjustment plate (33). The pressure block (31) is connected to the core assembly (1), the pad (32) abuts against the coil assembly (2), and the adjustment plate (33) is disposed between the pressure block (31) and the pad (32). The adjustment plate (33) is interference-fitted with the pressure block (31) and the pad (32).

2. The low-load-loss transformer according to claim 1, characterized in that, The core assembly (1) includes a core (11), a web (12) and a support plate (13). The web (12) is located on both sides of the core (11). The web (12) is fixedly connected to the support plate (13). The support plate (13) is connected to the pressure block (31).

3. The low-load-loss transformer according to claim 2, characterized in that, The pressure block (31) has a slot (34) at one end facing the support plate (13), and the support plate (13) engages with the slot (34).

4. The low-load-loss transformer according to claim 3, characterized in that, The support plate (13) includes a plate body and a positioning pin. The positioning pin is located at one end of the support plate (13) facing the pressure block (31). The slot (34) includes a slot bottom (341) and a slot wall (342). The slot bottom (341) has a positioning hole. The positioning pin cooperates with the positioning hole. The slot wall (342) engages with the support plate (13).

5. The low-load-loss transformer according to claim 2, characterized in that, The adjusting device (3) further includes a connector. The pressing block (31) has a first connecting hole (35), the adjusting cardboard (33) has a second connecting hole, and the pad (32) has a third connecting hole. The first connecting hole (35), the second connecting hole, and the third connecting hole all pass through in a direction perpendicular to the axis of the core (11). The connector passes through the first connecting hole (35), the second connecting hole, and the third connecting hole, and the connector fixes the pressing block (31), the adjusting cardboard (33), and the pad (32) together.

6. The low-load-loss transformer according to claim 5, characterized in that, The axes of the first connecting hole (35), the second connecting hole and the third connecting hole are collinear.

7. The low-load-loss transformer according to claim 6, characterized in that, The connector is a cable tie.

8. The low-load-loss transformer according to claim 6, characterized in that, The connecting component is a bolt.

9. The low-load-loss transformer according to claim 2, characterized in that, The coil assembly (2) includes a winding (21) and a pressure plate (22). One end of the pressure plate (22) is connected to the winding (21), and the other end of the pressure plate (22) abuts against the pad (32).

10. The low-load-loss transformer according to any one of claims 1 to 9, characterized in that, The number of the adjustment devices (3) is at least two, and the at least two adjustment devices (3) are respectively disposed between the core assembly (1) and the coil assembly (2).

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