Intermediate frequency transformer, assembling method, parameter setting method, device and storage medium thereof

Abstract

The present application relates to a kind of intermediate frequency transformer and its assembly method, parameter setting method, equipment and storage medium.The intermediate frequency transformer includes: the iron core with stepped opening with rectangular cross section, the iron core is multi-stage stepped structure, and is assembled by the super-thin oriented silicon steel sheet with thickness ≤0.10 mm;The iron core includes the upper yoke, the lower yoke, the first core column, the second core column and the corner bending of the corner of rectangular frame;Iron yoke clamp is located in the upper yoke, the lower yoke both sides;High voltage coil and low voltage coil are concentrically wound on the first core column and the second core column.The magnetic density of the intermediate frequency transformer core of the present application is significantly improved, the volume weight is greatly reduced, and the power density is higher.The assembly method of the intermediate frequency transformer proposed in the present application ensures the assembly accuracy of the large-capacity super-thin oriented silicon steel intermediate frequency transformer by strictly limiting the assembly steps, and is suitable for large-scale production.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically to a medium-frequency transformer and its assembly method, parameter setting method, equipment, and storage medium. Background Technology

[0002] Medium-frequency transformers are mainly used in new energy power generation and grid-connected equipment, playing a role in voltage isolation, transformation, and power transmission. Their operating frequency is 400–1000 Hz. Compared to power frequency transformers, medium-frequency transformers have advantages such as smaller size and lighter weight, which is of great significance for improving the power density of new energy power generation and grid-connected equipment. Currently, most large-capacity medium-frequency transformers use conventional thickness grain-oriented silicon steel (0.20 mm–0.27 mm) for their cores, manufactured using a laminated core structure. The core, coils, and overall assembly methods are consistent with conventional power frequency transformers. Because conventional thickness grain-oriented silicon steel has relatively high losses at medium frequencies, existing core designs use lower magnetic flux density to avoid core overheating, resulting in larger size and weight, and lower power density for large-capacity medium-frequency transformers. Ultra-thin grain-oriented silicon steel has the characteristic of low medium-frequency losses, making it particularly suitable for manufacturing large-capacity, high-power-density medium-frequency transformers. However, ultra-thin grain-oriented silicon steel is very thin (thickness ≤ 0.10 mm), and existing shearing and lamination precision cannot meet the requirements, rendering traditional laminated core structures and transformer assembly methods unsuitable. The lack of suitable high-capacity intermediate frequency transformers and assembly methods for ultra-thin oriented silicon steel makes it difficult to leverage the low intermediate frequency loss advantage of ultra-thin oriented silicon steel, and hinders the improvement of power density in high-capacity intermediate frequency transformers.

[0003] In summary, the problems of large size and low power density of large-capacity intermediate frequency transformers urgently need to be addressed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention proposes a medium-frequency transformer, comprising:

[0005] The core has a rectangular cross-section and step openings. The core is a multi-stage step structure and is assembled and stacked from ultra-thin oriented silicon steel sheets with a thickness of ≤0.10mm. The core includes an upper yoke, a lower yoke, a first core column, a second core column, and corner bends at the four corners of the rectangle, which form a rectangular frame.

[0006] The yoke clamps are located on both sides of the upper and lower yokes;

[0007] High-voltage coils and low-voltage coils are concentrically wound on the first iron core column and the second iron core column.

[0008] Furthermore, it also includes a water-cooling component, which includes a first water-cooling component and a second water-cooling component, wherein the first water-cooling component and the second water-cooling component respectively surround and clamp the first iron core column and the second iron core column.

[0009] The inlet pipe and return pipe are located on both sides of the iron core and are used to supply water to the water-cooled components, as well as the connecting hose connecting the inlet pipe and return pipe.

[0010] Furthermore, the first and second core columns are multi-stage step structures with symmetrical spatial distribution.

[0011] Furthermore, the stepping method is one sheet per stack, with a stepping distance of 10-20mm.

[0012] Furthermore, the yoke clamping member includes a first upper yoke clamping member, a second upper yoke clamping member, a first lower yoke clamping member, and a second lower yoke clamping member; the first upper yoke clamping member and the second upper yoke clamping member interact to clamp the upper yoke; the first lower yoke clamping member and the second lower yoke clamping member interact to clamp the lower yoke.

[0013] Furthermore, the first upper yoke clamp is connected to the second upper yoke clamp via a first transverse pull rod located at both ends of the upper yoke clamp, the axial direction of the first transverse pull rod being parallel to the thickness direction of the core; the first lower yoke clamp is connected to the second lower yoke clamp via a second transverse pull rod located at both ends of the lower yoke clamp, the axial direction of the second transverse pull rod being parallel to the thickness direction of the core.

[0014] Furthermore, the high-voltage coil includes a first rectangular high-voltage coil and a second rectangular high-voltage coil; the low-voltage coil includes a first rectangular low-voltage coil and a second rectangular low-voltage coil; the first rectangular high-voltage coil and the first rectangular low-voltage coil are mounted on the first iron core column; the second rectangular high-voltage coil and the second rectangular low-voltage coil are mounted on the second iron core column.

[0015] Furthermore, the first water-cooled component includes a first side plate located on the outside of the core and closely attached to the first core column, a second side plate connected to the first side plate and closely attached to the first core column, a third side plate, and a fourth side plate located on the inside of the core and opposite to the first side plate and closely attached to the first core column.

[0016] The first side plate, the second side plate, the third side plate, and the fourth side plate are fixedly connected to each other and connected to the inlet pipe and the return pipe via water pipes;

[0017] The second water-cooled component has the same structure as the first water-cooled component and is symmetrically arranged around the second iron core column.

[0018] Furthermore, the second side plate and the third side plate are provided with a first mounting claw and a second mounting claw, and the first water-cooling component is connected to the first upper yoke clamp and the second upper yoke clamp through the first mounting claw and the second mounting claw.

[0019] Furthermore, the first upper yoke clamp and the second upper yoke clamp are connected to the first lower yoke clamp and the second lower yoke clamp via multiple longitudinal tie rods located at both ends of the upper yoke clamp, and the axial direction of the longitudinal second upper yoke clamp is parallel to the height direction of the iron core.

[0020] The first water-cooled component is connected to the second water-cooled component via a third transverse tie rod located at both ends of the water-cooled component. The axial direction of the third transverse tie rod is parallel to the width direction of the core.

[0021] Furthermore, an upper yoke support plate is provided between the first upper yoke clamp, the second upper yoke clamp, and the upper yoke;

[0022] A first lower yoke support plate is provided between the first lower yoke clamp, the second lower yoke clamp, and the lower yoke; and a second lower yoke support plate is provided at the bottom of the first lower yoke clamp and the second lower yoke clamp.

[0023] The bottom ends of the lower yoke clamp are provided with a first support frame and a second support frame, and the bottom of the second lower yoke support plate is provided with a third support frame.

[0024] Furthermore, the space between the second lower yoke support plate and the lower yoke is filled with E-type rubber pads.

[0025] Furthermore, the iron yoke clamp includes a web, reinforcing ribs, and multiple I-shaped limb plates distributed along the length of the web;

[0026] The limb plates are located at the position of the longitudinal tension screw and are used to press the coil.

[0027] The present invention also provides a method for parameter tuning of the aforementioned intermediate frequency transformer, comprising the following steps:

[0028] The core parameters are determined, including: core window width W, core window height H, core thickness D, and thickness E of the ultra-thin oriented silicon steel laminations.

[0029] The number of ultra-thin oriented silicon steel laminations DT is determined based on the core lamination thickness D and the ultra-thin oriented silicon steel lamination thickness E.

[0030] The number of lamination groups i, the number of laminations in each group m, and the corresponding dimensions of each lamination at the upper yoke, lower yoke, first core column, second core column, and corner bending positions are determined based on the core window width W and core window height H.

[0031] Furthermore, the dimensions of each stacked sheet include:

[0032] The length of the ultra-thin grained silicon steel lamination located in the upper part of the first core column 103

[0033] The length of the ultra-thin grain-oriented silicon steel lamination located at the upper corner 105 of the first core column 103

[0034] The length of the ultra-thin grain-oriented silicon steel laminations in the upper yoke 101

[0035] The length of the ultra-thin grain-oriented silicon steel lamination located at the right corner 105 of the upper yoke 101

[0036] The length of the ultra-thin grained silicon steel lamination located in the upper part of the second core column 104

[0037] The length of the ultra-thin grained silicon steel lamination located in the lower part of the second core column 104

[0038] The length of the ultra-thin grain-oriented silicon steel lamination located at the lower corner 105 of the second core column 104

[0039] The length of the ultra-thin grain-oriented silicon steel laminations in the lower yoke 102

[0040] The length of the ultra-thin grain-oriented silicon steel lamination located at the left corner 105 of the lower yoke 101

[0041] The length of the ultra-thin grain-oriented silicon steel lamination located in the lower part of the first core column 103

[0042] Where n represents the nth stacked piece counted from the inside out.

[0043] Furthermore, the number of stacked wafers DT is determined according to the following formula:

[0044]

[0045] in, This indicates rounding up, that is, the smallest integer greater than or equal to a.

[0046] Furthermore, the calculation methods for the number of stack groups i, the number of stacks m in each group, and the size of each stack are as follows:

[0047] Based on the core window width W and core window height H, set The initial length is y. Given an initial length of d and a bending angle of AN for the core, calculate the dimensions of the first lamination:

[0048] Based on the size of the first stacked piece, and setting the step spacing to x, calculate the size of the nth stacked piece;

[0049] After calculating the bending dimensions of each piece, the following judgment is made:

[0050] like Then continue calculating the bending dimensions for the next piece;

[0051] like Then the calculation of the first set of stacked pieces is completed, and the number of pieces m in each set of stacked pieces is determined;

[0052] Calculate the number of stack groups i based on the number of stacks DT and the number of stacks in each group m;

[0053] If the number of stacks DT is divisible by the number of stacks m in each group, then the number of stacks m in each group is m.

[0054] If the number of stacks DT is not divisible by the number of stacks m in each group, then the number of stacks in groups 2 to i-1 is m, and the number of stacks in group i is r.

[0055] Calculate the size of each stack based on the size of the first stack and the step spacing x.

[0056] Furthermore, the dimensions of the first set of laminates are calculated according to the following formula:

[0057]

[0058] in,

[0059] Furthermore, the stack size of the i-th group is calculated according to the following formula:

[0060]

[0061] Where j = 2, 3…i; k = 1, 2, 3…,m.

[0062] The present invention also provides an electronic device, comprising: at least one processor and a memory; the memory and the processor are connected via a bus;

[0063] The memory is used to store one or more programs;

[0064] When the one or more programs are executed by the at least one processor, the parameter tuning method for the intermediate frequency transformer is implemented.

[0065] The present invention also provides a readable storage medium having an executable program stored thereon, wherein when the executable program is executed, the parameter setting method for the intermediate frequency transformer is implemented.

[0066] The present invention also provides an assembly method for the aforementioned large-capacity ultra-thin grain-oriented silicon steel intermediate frequency transformer, comprising the following steps:

[0067] The high-voltage coil is fitted onto the low-voltage coil and placed horizontally on a horizontal assembly table, with the placement positions symmetrical from left to right.

[0068] Place the third side plate of the first water-cooled component horizontally against the bottom of the inner side of the first rectangular low-voltage coil, and place the fourth side plate vertically against the right side of the inner side of the first rectangular low-voltage coil. Then fix the third side plate and the fourth side plate together. Complete the installation of the two side plates of the second water-cooled component at symmetrical positions in the same way.

[0069] One end of the first upper yoke clamp is installed onto the second mounting claw of the third side plate of the first water-cooled component, and the other end is installed onto the symmetrical position of the second water-cooled component. The installation of the first lower yoke clamp is completed in the same way. At this time, the first upper yoke clamp, the first lower yoke clamp, the third side plate of the first water-cooled component, and the side plate of the symmetrical position of the second water-cooled component are horizontally placed to form the core lamination mounting plane.

[0070] The upper yoke support plate and the first lower yoke support plate are respectively installed onto the first upper yoke clamp and the first lower yoke clamp. The pre-processed laminations are then inserted one by one from the inside to the outside on the lamination mounting plane of the core. All laminations are stacked in sequence, and the core is tightened to complete the core stacking.

[0071] The first side plate of the first water-cooled component is installed between the first rectangular low-voltage coil and the first iron core column. The side plates of the second water-cooled component at symmetrical positions are installed in the same way. The iron core is tightened and fixed along the width of the window using the third transverse tie rod. The side plates of the water-cooled component are then fixedly connected.

[0072] The second side plate of the first water-cooled component is installed between the first rectangular low-voltage coil and the first iron core column. The side plates of the second water-cooled component at symmetrical positions are installed in the same way, and the side plates of the water-cooled component are fixedly connected.

[0073] Several longitudinal tie rods are used to longitudinally tighten and fix the first upper yoke clamp, the first lower yoke clamp, and the coil along the window height direction; the upper yoke support plate and the first lower yoke support plate are respectively installed onto the second upper yoke clamp and the second lower yoke clamp; and several longitudinal tie rods are used to longitudinally tighten and fix the second upper yoke clamp, the second lower yoke clamp, and the coil along the window height direction.

[0074] The first upper yoke clamp and the second upper yoke clamp are connected and fastened by the first transverse tie rod, and the first lower yoke clamp and the second lower yoke clamp are connected and fastened by the second transverse tie rod.

[0075] Install the E-type rubber pad in the middle area of ​​the lower surface of the lower yoke to ensure that the third transverse tie rod can be inserted into the two openings of the E-type rubber pad.

[0076] Install the second lower yoke support plate;

[0077] Erect and suspend the installed core, coils and clamps as a whole, install the first support frame, the second support frame and the third support frame, and place the intermediate frequency transformer on the ground after installation.

[0078] Install the inlet and outlet water pipes, with the inlet water pipe at a height slightly lower than the outlet water pipe.

[0079] The first and second water-cooled components are connected in series or parallel via flexible hoses to complete the assembly of the large-capacity ultra-thin oriented silicon steel intermediate frequency transformer.

[0080] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0081] The intermediate frequency transformer proposed in this invention uses ultra-thin grain-oriented silicon steel laminations with a thickness of ≤0.10mm, significantly reducing no-load losses. It employs a stepped opening design to reduce local hysteresis losses and improve magnetic flux density. Structurally, it uses a rectangular closed magnetic circuit with continuous bending at the four corners to improve magnetic circuit efficiency and reduce volume for the same capacity. The first and second core columns are spatially symmetrically distributed to balance magnetic flux distribution and avoid magnetization issues, making it suitable for intermediate frequency applications. Compared to intermediate frequency transformers with laminated core structures, it exhibits superior core performance, significantly improved magnetic flux density, substantial reduction in size and weight, and higher power density.

[0082] The parameter tuning method for intermediate frequency transformers proposed in this invention recursively calculates the dimensions of each laminate in each section based on the initial length and bending angle, and adopts a group optimization algorithm to ensure the lamination accuracy and meet the processing requirements of ultra-thin silicon steel (≤0.10mm). It has higher processing accuracy and can effectively solve the problem that the accuracy requirements cannot be met when using ultra-thin oriented silicon steel to make large-capacity intermediate frequency transformers.

[0083] The assembly method for intermediate frequency transformers proposed in this invention ensures the assembly accuracy of the large-capacity ultra-thin oriented silicon steel intermediate frequency transformer by strictly limiting the assembly steps. The core components (coil + water-cooled parts + iron yoke clamps) are pre-assembled horizontally first, and then the support system is installed vertically as a whole. This reduces the difficulty of positioning large components and significantly improves the operation efficiency compared with traditional vertical assembly, making it suitable for mass production. Attached Figure Description

[0084] Figure 1 This is a front view of the overall structure schematic diagram of the large-capacity ultra-thin silicon steel intermediate frequency transformer according to an embodiment of the present invention;

[0085] Figure 2 This is a side view of the overall structure of the large-capacity ultra-thin silicon steel intermediate frequency transformer according to an embodiment of the present invention;

[0086] Figure 3This is a top view of the overall structure of the large-capacity ultra-thin silicon steel intermediate frequency transformer according to an embodiment of the present invention;

[0087] Figure 4 This is a schematic diagram of the structure of a single-phase ultrathin grain-oriented silicon steel bent core according to an embodiment of the present invention;

[0088] Figure 5 This is a schematic diagram showing the bending length parameters and bending shearing position of the nth stacked sheet in an embodiment of the present invention.

[0089] Figure 6 This is a schematic diagram of the structure of the first water-cooled component according to an embodiment of the present invention;

[0090] Figure 7 This is a schematic diagram of the structure of the second water-cooled component according to an embodiment of the present invention;

[0091] Figure 8 This is a schematic diagram of the iron yoke clamp according to an embodiment of the present invention;

[0092] Figure 9 This is a front view of a structural schematic diagram of the core lamination mounting plane according to an embodiment of the present invention;

[0093] Figure 10 This is a side view of a schematic diagram of the core lamination mounting plane according to an embodiment of the present invention;

[0094] Figure 11 This is a top view of the structural schematic diagram of the core lamination mounting plane according to an embodiment of the present invention;

[0095] Figure 12 This is a schematic diagram of the core assembly according to an embodiment of the present invention;

[0096] Figure 13 This is a schematic diagram of the assembly of the water-cooled components according to an embodiment of the present invention;

[0097] Figure 14 This is a schematic diagram of the assembly of the iron yoke clamp according to an embodiment of the present invention;

[0098] Figure 15 This is a schematic diagram of the assembly of the E-type rubber pad according to an embodiment of the present invention;

[0099] Figure 16 This is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention;

[0100] in,

[0101] 1. Iron core; 101. Upper yoke; 102. Lower yoke; 103. First iron core column; 104. Second iron core column; 105. Corner bend;

[0102] 2. First water-cooled component; 201. First side plate; 202. Second side plate; 203. Third side plate; 204. Fourth side plate; 205. First mounting claw; 206. Second mounting claw;

[0103] 3. Second water-cooled component; 301. Fifth side plate; 302. Sixth side plate; 303. Seventh side plate; 304. Eighth side plate; 305. Third mounting claw; 306. Fourth mounting claw;

[0104] 4. First upper yoke clamp; 401. Web plate; 402. Reinforcing rib; 403. Limb plate;

[0105] 5. Second upper yoke clamp; 6. First lower yoke clamp; 7. Second lower yoke clamp;

[0106] 8. First transverse pull screw; 9. Second transverse pull screw; 10. First rectangular low-voltage coil; 11. First rectangular high-voltage coil; 12. Second rectangular low-voltage coil; 13. Second rectangular high-voltage coil;

[0107] 14. Coil pad; 15. Longitudinal tie rod; 16. Upper yoke support plate; 17. First lower yoke support plate; 18. Second lower yoke support plate; 19. Type E rubber pad;

[0108] 20. First support frame; 21. Second support frame; 22. Third support frame; 23. Inlet pipe; 24. Return pipe; 25. Connecting hose; 26. Third transverse tie rod;

[0109] 27. Epoxy support strips; 28. Temporary spacers; 29. ​​Binding steel straps; 30. Screws; 31. Horizontal assembly table. Detailed Implementation

[0110] The present invention will be further described below with reference to the accompanying drawings and embodiments. The following embodiments are provided to better understand the present invention and are not intended to limit the preferred embodiments described. They do not constitute a limitation on the content and scope of protection of the present invention. Any product that is the same as or similar to the present invention, derived by any person under the guidance of the present invention or by combining the features of the present invention with other prior art, falls within the protection scope of the present invention.

[0111] Example 1

[0112] This embodiment provides a ±10kV, 200kVA, 600Hz intermediate frequency transformer made of ultra-thin oriented silicon steel strip with a thickness E of 0.10mm and a width of 120mm. Its core window height H is 360mm, window width W is 228mm, and lamination thickness D is 47mm. Both high and low voltage windings use 0.10mm thick copper foil and are manufactured using traditional dry-type transformer coil casting methods via epoxy resin casting. (See attached...) Figures 1-3 As shown. The transformer includes:

[0113] The core has a rectangular cross-section and the core column has a step opening. It is a single-phase ultra-thin grain-oriented silicon steel bent core 1; the bending angle AN is 135°.

[0114] The single-phase ultra-thin grain-oriented silicon steel bent core 1 is an open core with a corner bend, as shown in the attached figure. Figure 4 As shown, it is assembled and stacked from the inside out from ultra-thin grain-oriented silicon steel. It includes an upper yoke 101, a lower yoke 102, a first core column 103, a second core column 104, and a corner bend 105. The first core column 103 and the second core column 104 are multi-level stepping structures with symmetrical spatial distribution, each stepping in a one-piece-one-stack manner with a stepping interval of 20mm.

[0115] A first water-cooled component 2 and a second water-cooled component 3 with clamping and positioning functions are located on the two core columns of the single-phase ultra-thin oriented silicon steel bent core 1, and the water-cooled components are arranged around the core columns.

[0116] The first upper yoke clamp 4 and the second upper yoke clamp 5 are respectively located on both sides of the upper yoke of the core 1. The first upper yoke clamp 4 and the second upper yoke clamp 5 interact to clamp the upper yoke 101. The first lower yoke clamp 6 and the second lower yoke clamp 7 are respectively located on both sides of the lower yoke of the core 1. The first lower yoke clamp 6 and the second lower yoke clamp 7 interact to clamp the lower yoke 102.

[0117] The first upper yoke clamp 4 and the first lower yoke clamp 6 are located on the same side of the core 1, and the second upper yoke clamp 5 and the second lower yoke clamp 7 are located on the same side of the core 1. The first upper yoke clamp 4 and the second upper yoke clamp 5 are connected and fastened by the first transverse tie rod 8 located at their two ends, and the first lower yoke clamp 6 and the second lower yoke clamp 7 are connected and fastened by the second transverse tie rod 9 located at their two ends. The axial direction of the first transverse tie rod 8 and the second transverse tie rod 9 is parallel to the thickness direction of the core 1.

[0118] A first rectangular low-voltage coil 10, a first rectangular high-voltage coil 11, a second rectangular low-voltage coil 12, and a second rectangular high-voltage coil 13 are respectively installed on the two core columns of a single-phase ultra-thin oriented silicon steel core 1;

[0119] Coil pad 14, located between the coil and the yoke plate, is used to press the coil.

[0120] The longitudinal tensioning rods 15 are used to tighten the upper and lower yokes, coil pads, and high and low voltage coils; the first upper yoke clamp 4 and the second upper yoke clamp 5 are connected to the first lower yoke clamp 6 and the second lower yoke clamp 7 through multiple longitudinal tensioning rods 15 located at both ends of the upper yoke clamps, and the axial direction of the longitudinal second upper yoke clamp 5 is parallel to the height direction of the core 1.

[0121] The upper yoke support plate 16, located at the bottom of the first upper yoke clamp 4 and the second upper yoke clamp 5, is used to support the upper yoke.

[0122] The first lower yoke support plate 17, located at the top of the first lower yoke clamp 6 and the second lower yoke clamp 7, is used to support the lower yoke, and the second lower yoke support plate 18, located at the bottom of the first lower yoke clamp 6 and the second lower yoke clamp 7, is used to support the lower yoke.

[0123] The space between the second lower yoke support plate 18 and the lower yoke 102 is filled with E-type rubber pads 19.

[0124] The first support frame 20, the second support frame 21 and the third support frame 22 located at both ends of the bottom of the lower yoke clamp are located;

[0125] Located on the first support frame 20 and the second support frame 21, there are water inlet pipes 23 and water return pipes 24 on both sides of the core 1, and connecting hoses 25 for connecting the water inlet pipes 23 and water return pipes 24 and the first water cooling component 2 and the second water cooling component 3.

[0126] The first water-cooled component 2 with clamping and positioning functions on the two iron core columns is shown in the attached figure. Figure 6 As shown. The first water-cooled component 2 includes a first side plate 201 located on the outer side of the first core column 103, a second side plate 202 and a third side plate 203 on the front and rear end faces, and a fourth side plate 204 on the inner side of the core column that is tightly attached to the first core column. The thickness of the first side plate 201, the second side plate 202, the third side plate 203, and the fourth side plate 204 is 10mm. The first side plate 201, the second side plate 202, the third side plate 203, and the fourth side plate 204 are fixedly connected to each other and connected to the water inlet pipe 23 and the water return pipe 24 through water pipes. Specifically, one water-cooled component has two water inlet pipes and two water outlet pipes. One of the water inlet pipes branches to connect to the two side plates, and the two water inlets and two water outlets are respectively connected to the main water inlet pipe 23 and the water return pipe 24.

[0127] The first water-cooled component 2 is provided with an inlet and an outlet. The inlet and outlet are located on the bottom of the water-cooled plate near the lower yoke 102, and the inner diameter of the inlet and outlet is 5mm.

[0128] The first side plate 201 of the core has a length of 484mm, which is higher than the overall height of the core (455mm), and a width of 120mm, the same as the width of the ultra-thin oriented silicon steel used in the core. The fourth side plate 204 has a length of 326mm, which is a fixed value between the core window height (360mm) and the coil height (280mm), and a width of 120mm, the same as the width of the ultra-thin oriented silicon steel. The second side plate 202, the third side plate 203, and the fourth side plate 204 all have a length of 326mm, and a width equal to the sum of the core lamination thickness and the thicknesses of the first side plate 201 and the fourth side plate 204, which is 67mm. The second side plate 202 and the third side plate 203 have a first mounting claw 205 and a second mounting claw 206 at one end along their length, which can be used to fix the water-cooled plate 2 to the first upper yoke clamp 4 and the second upper yoke clamp 5 by screws 30.

[0129] The first side plate 201, the second side plate 202, the third side plate 203, and the fourth side plate 204 are closely attached to the surface of the first core column 103, enclosing the core column 103 in the middle. The side plates are connected by screws 30, which are located at both ends of the second side plate 202 and the third side plate 203 along their length, in positions not obstructed by the coil.

[0130] The second water-cooling component 3, which has clamping and positioning functions, is attached to the second core column 104. Figure 7 As shown. The second water-cooled component 3 has the same structure as the first water-cooled component 2, and is symmetrically arranged, including a fifth side plate 301 located on the outer side of the second core column 104, a sixth side plate 302 and a seventh side plate 303 on the front and rear end faces, and an eighth side plate 304 located on the inner side of the core. The fifth side plate 301, the sixth side plate 302, the seventh side plate 303, and the eighth side plate 304 are 10mm thick.

[0131] The second water-cooled component 3 is provided with inlet and outlet water ports, located at the bottom of the water-cooled plate near the lower iron yoke 102, and the inner diameter of both the inlet and outlet water ports is 5mm.

[0132] The fifth side plate 301 of the core has a length of 484mm, which is higher than the overall height of the core (455mm). Its width is the same as the width of the ultra-thin oriented silicon steel used in the core, which is 120mm. The eighth side plate 304 has a length of 326mm, which is a fixed value between the core window height (360mm) and the coil height (280mm). Its width is the same as the width of the ultra-thin oriented silicon steel, which is 120mm. The sixth side plate 302, the seventh side plate 303, and the eighth side plate 304 all have a length of 326mm. Their width is equal to the sum of the core lamination thickness and the thicknesses of the fifth side plate 301 and the eighth side plate 304, which is 67mm. The sixth side plate 302 and the seventh side plate 303 have a third mounting claw 305 and a fourth mounting claw 306 at one end along their length direction. The second water-cooling component 3 can be fixed to the first upper yoke clamp 4 and the second upper yoke clamp 5 by screws 30.

[0133] The first side plate 201 on the outer side of the first core column 103 and the fifth side plate 301 on the outer side of the second core column 104 are tightened and fixed along the width of the window by two tie rods with a diameter of 8mm each, located at the top of the upper yoke and the bottom of the lower yoke, as shown in the attached figure. Figure 1 As shown.

[0134] The first upper yoke clamp 4, the second upper yoke clamp 5, the first lower yoke clamp 6, and the second lower yoke clamp 7 have the same structure, as shown in the attached figure. Figure 8 As shown in the attached diagram. It consists of a non-magnetic steel core web 401, reinforcing ribs 402, and I-shaped limb plates 403. The I-shaped limb plates 403 are distributed along the length of the core web 401 at the top of the coil pad 14 and the longitudinal tie rod 15 to clamp the coil, as shown in the attached diagram. Figure 1 As shown.

[0135] Example 1

[0136] This embodiment provides a parameter tuning method for the aforementioned intermediate frequency transformer, comprising the following steps:

[0137] 1) Based on the structural form of a single-phase ultra-thin grain-oriented silicon steel bent core (1) with a rectangular core cross-section and a stepped opening in the core column, the bending dimensions of each core lamination are determined as follows: in This indicates the length of the nth laminated ultrathin silicon steel strip located on the upper part of the first core column 103. This indicates the length of the nth laminated ultra-thin silicon steel strip located at the upper corner 105 of the first core column 103. This indicates the length of the nth laminated ultrathin silicon steel strip located at the upper yoke 101. This indicates the length of the nth laminated ultra-thin silicon steel strip located at position 105, the right corner of the upper yoke 101. This indicates the length of the nth laminated ultra-thin silicon steel strip located on the upper part of the second core column 104. This indicates the length of the nth laminated ultra-thin silicon steel strip located below the second core column 104. This indicates the length of the nth laminated ultra-thin silicon steel strip located at the lower corner 105 of the second core column 104. This indicates the length of the nth laminated ultra-thin silicon steel strip located at the lower yoke 102. This indicates the length of the nth laminated ultra-thin silicon steel strip located at position 105, to the left of the lower yoke 101. This indicates the length of the nth laminated ultra-thin silicon steel strip located below the first core column 103; The length of ultra-thin silicon steel strip to be fed into the bending equipment for bending and shearing operations after slitting; as shown in the attached document. Figure 5 As shown.

[0138] 2) Calculate the number of core laminations DT = 470 according to formula (1);

[0139]

[0140] In the formula, D is the thickness of the core laminations, and E is the thickness of the ultra-thin silicon steel sheet;

[0141] 3) Calculate the bending dimensions of each ultra-thin silicon steel sheet in the first group of stacked sheets sequentially from the inside out according to formulas (2) and (3):

[0142]

[0143] in,

[0144]

[0145] In the formula, y is a set value. Initial length, d is set. The initial length is given by W, where W is the width of the core window and H is the height of the core window.

[0146] After calculating the bending dimensions of each piece, the following judgment is made:

[0147] like Then, continue to calculate the bending dimension of the next piece in the first stack according to formulas (2) and (3);

[0148] like This completes the calculation of the dimensions of the first set of laminations. At this point, the number of laminations in each set, m, is equal to the number of core step stages, n.

[0149] In this embodiment, The initial length is set to 20mm. The initial length was set to 5mm, the core window height H was 360mm, and the window width W was 228mm. Calculations showed that the number of laminations per stack and the core step number m = 17.

[0150] 4) Calculate parameter r according to formula (4):

[0151]

[0152] In this embodiment, parameter r = 11;

[0153] 5) If r>0, the number of stacked groups i is calculated according to formula (5):

[0154]

[0155] At this point, the number of stacked pieces in each group from the 2nd to the (i-1th)th group is m, and the number of stacked pieces in the i-th group is r;

[0156] The bending dimensions of the stacked sheets from the 2nd to the (i-1)th group are calculated according to formula (6):

[0157]

[0158] The bending dimensions of the i-th group of laminates are calculated according to formula (7):

[0159]

[0160] If r = 0, then the number of stack groups i is calculated according to formula (8):

[0161]

[0162] At this point, the number of stacked pieces in groups 2 to 1 is m;

[0163] The bending dimensions of the second to the i-th stacked sheets are calculated according to formula (9):

[0164]

[0165] In this embodiment, r>0, the number of stacked sheets i=28 is calculated according to formula (5); the bending dimensions of the 2nd to 27th stacked sheets are calculated according to formula (6), and the bending dimensions of the 27th stacked sheet are calculated according to formula (7). The bending dimensions of each stacked sheet in the 1st to 28th stacked sheets are shown in Table 1.

[0166] Table 1 shows the calculation results of the bending dimensions of each lamination in groups 1 to 28.

[0167]

[0168]

[0169]

[0170] Example 3

[0171] This embodiment provides an assembly method for a large-capacity ultra-thin silicon steel intermediate frequency transformer, the specific steps of which are as follows:

[0172] 1) Specify the bending dimensions for each core lamination. During processing, follow the steps in sequence Feed the sheets sequentially, bending them once at a 135° angle each time a bending dimension is reached. After four consecutive bends, perform a cutting operation on the fifth bend. Repeat this 4-fold-1-cut operation until all stacked sheets are bent and cut. (Attached) Figure 5 The bending length parameter and bending cut position of the nth stacked piece;

[0173] 2) Place the first rectangular low-voltage coil 10 vertically and fit the first rectangular high-voltage coil 11 on the outside of the first rectangular low-voltage coil 10. Use several sets of epoxy support strips 27 that are evenly or symmetrically distributed to tighten the first rectangular low-voltage coil 10 and the first rectangular high-voltage coil 11, thus completing the assembly of the first rectangular low-voltage coil 10 and the first rectangular high-voltage coil 11.

[0174] 3) Place the second rectangular low-voltage coil 12 vertically and fit the second rectangular high-voltage coil 13 on the outside of the second rectangular low-voltage coil 12. Use several sets of epoxy support strips 27 that are evenly or symmetrically distributed to tighten the second rectangular low-voltage coil 12 and the second rectangular high-voltage coil 13, thus completing the assembly of the second rectangular low-voltage coil 12 and the second rectangular high-voltage coil 13.

[0175] 4) Place the installed first rectangular low-voltage coil 10 and first rectangular high-voltage coil 11, as well as the installed second rectangular low-voltage coil 12 and second rectangular high-voltage coil 13, horizontally on the rectangular horizontal assembly table 31. The placement should be symmetrical, ensuring that the distance between the first rectangular high-voltage coil 11 and the second rectangular high-voltage coil 12 is the insulation distance between the two coils, as shown in the attached figure. Figures 9-11 As shown;

[0176] 5) After evenly applying thermally conductive silicone to the surface of the third side plate 203 of the first water-cooled component 2, place it horizontally against the bottom of the inner side of the first rectangular low-voltage coil 10, ensuring that the length of the side with the second mounting claw 206 extending out of the first rectangular low-voltage coil 10 is equal to the height of the coil pad 14, which is 40mm.

[0177] 6) After evenly applying thermally conductive silicone to the surface of the fourth side plate 204 of the first water-cooling component 2, vertically insert it into the first rectangular low-voltage coil 10, close to the right side of the inner side. The fourth side plate 204 is connected to the third side plate 203 by screws 30. The lengths of the two ends of the fourth side plate 204 extending out of the first rectangular low-voltage coil 10 are 33mm and 13mm respectively. The end with the length of 33mm is the end close to the second mounting claw 206, as shown in the attached figure. Figures 9-11 As shown;

[0178] 7) After evenly applying thermally conductive silicone to the surface of the sixth side plate 302 of the second water-cooling component 3, place it horizontally against the bottom of the inner side of the second rectangular low-voltage coil 12, ensuring that the length of the side with the third mounting claw 305 extending out of the first rectangular low-voltage coil 12 is equal to the height of the coil pad 14, which is 40mm. (See attached image) Figures 9-11 As shown;

[0179] 8) After evenly applying thermally conductive silicone to the surface of the eighth side plate 304 of the second water-cooling component 3, vertically insert it into the second rectangular low-voltage coil 12, close to the left side of the inner side. The sixth side plate 302 is connected to the eighth side plate 304 by screws 30. The lengths of the six side plate 302 extending beyond the second rectangular low-voltage coil 12 are 33mm and 13mm respectively. The end with the length of 33mm is the end closest to the third mounting claw 305, as shown in the attached diagram. Figures 9-11 As shown;

[0180] 9) The first upper yoke clamp 4, with its clamping plane facing upward, is mounted onto the third side plate 203 with the second mounting claw 206 and the seventh side plate 303 with the fourth mounting claw 306. Simultaneously, multiple temporary pads 28 are used to support the side of the first upper yoke clamp 4 with the web, as shown in the attached diagram. Figures 9-11 As shown;

[0181] 10) Place temporary pads 28 in numbers equal to the number of temporary pads 28 at symmetrical positions at the other end of the coil. Simultaneously, place the first lower yoke clamp 6, with the web side facing upwards, onto the temporary pads 28. At this point, the first upper yoke clamp 4, the first lower yoke clamp 6, the third side plate 203 with the second mounting claw 206, and the sixth side plate 302 of the second water-cooling component 3 form the core lamination mounting plane, as shown in the attached diagram. Figure 12 As shown;

[0182] 11) Install the upper yoke support plate 16 and the first support plate 17 of the lower yoke, made of 6mm thick epoxy board, onto the first upper yoke clamp 4 and the first lower yoke clamp 6 through the reserved mounting holes. Insert the pre-processed core bending laminations one by one from the inside out on the core lamination mounting plane, ensuring that the innermost lamination is tightly attached to the fourth water-cooling plate 204 of the first water-cooling component 2, the fifth side plate 301 of the second water-cooling component 3, the upper yoke support plate 16, and the first support plate 17 of the lower yoke. The next core lamination should be tightly attached to the previous one. Continue this process until all core bending laminations are stacked. Secure the core with two 25mm wide and 3mm thick binding steel straps 29 to complete the core stacking. (See attached diagram) Figure 13 As shown;

[0183] 12) After applying thermally conductive silicone to the surfaces of the first side plate 201 of the first water-cooled component 2 and the fifth side plate 301 of the second water-cooled component 3, insert them between the first rectangular low-voltage coil 10 and the first core column 103, and between the second rectangular low-voltage coil 12 and the first core column 104. Use four 10mm diameter tie rods to tighten and fix the core 1 along the width of the window. Then, connect the first side plate 201 and the third side plate 203 of the first water-cooled component 2, and connect the fifth side plate 301 and the sixth side plate 302 of the second water-cooled component 3, as shown in the attached diagram. Figure 13 As shown;

[0184] 13) Apply thermally conductive silicone to the surfaces of the second side plate 202 of the first water-cooled component 2 and the seventh side plate 303 of the second water-cooled component 3, respectively, and then insert them between the upper end face of the first rectangular low-voltage coil 10 and the first iron core column 103, and between the upper end face of the second rectangular low-voltage coil 12 and the first iron core column 104. Connect the second water-cooled component S06 of the water-cooled plate 2 to the first side plate 201 and the fourth side plate 204 of the first water-cooled component 2, and the seventh side plate 303 of the second water-cooled component 3 to the fifth side plate 301 and the fourth side plate 304, using bolts to complete the installation of the first water-cooled component 2 and the second water-cooled component 3, as shown in the attached diagram. Figure 14 As shown;

[0185] 14) Place the four coil pads 14 under the four I-shaped plates 403 of the first upper yoke clamp 4 and the first lower yoke clamp 6 corresponding to the ends of the coils, ensuring that the position of the first lower yoke clamp 6 remains fixed. Use three longitudinal tension screws 15 with a diameter of 8mm (left, middle, and right) to longitudinally tighten the first upper yoke clamp 4, the first lower yoke clamp 6, the coil pads 14, and the coils, as shown in the attached diagram. Figure 14 As shown;

[0186] 15) Place the second upper yoke clamp 5 and the second lower yoke clamp 7, with their clamping surfaces facing down, on the upper yoke 101 and lower yoke 102, respectively, symmetrically positioned with respect to the first upper yoke clamp 4 and the first lower yoke clamp 6. Simultaneously, install the upper yoke support plate 16 and the lower yoke first support plate 17 onto the second upper yoke clamp 5 and the second lower yoke clamp 7 through the pre-drilled mounting holes, as shown in the attached diagram. Figure 14 As shown;

[0187] 16) Place the four coil pads 14 under the four I-shaped plates 403 of the second upper yoke clamp 5 and the second lower yoke clamp 7 corresponding to the ends of the coils, ensuring that the position of the second lower yoke clamp 7 remains fixed. Use three longitudinal tie rods 15 with a diameter of 8mm (left, middle, and right) to longitudinally tighten the second upper yoke clamp 5, the second lower yoke clamp 7, the coil pads 14, and the coils, as shown in the attached diagram. Figure 14 As shown;

[0188] 17) The first upper yoke clamp 4 and the second upper yoke clamp 5 are connected and fastened by the first transverse tie rods 8 located at both ends of the upper yoke clamps, and the first lower yoke clamp 6 and the second lower yoke clamp 7 are connected and fastened by the second transverse tie rods 9 located at both ends of the upper yoke clamps, as shown in the attached figure. Figure 15 As shown;

[0189] 18) Align the opening of the E-type rubber pad 19 (12mm wide, 12mm deep, and 5mm thick at the bottom) with the bottom of the lower yoke 102, and fasten it to the middle area of ​​the lower surface of the lower yoke 102, ensuring that the pull screw (26) can be inserted into the two openings of the E-type rubber pad 19, as shown in the attached figure. Figure 15 As shown;

[0190] 19) Install the bottom second support plate 18 into the reserved mounting holes on the first lower yoke clamp 6 and the second lower yoke clamp 7 using bolts, so that the E-type rubber pad 19 is fixed to the bottom of the lower yoke 102 of the core 1, as shown in the attached figure. Figure 1 As shown;

[0191] 20) Remove all temporary pads 28, and erect and suspend the installed core, coils, and clamps as a whole. After suspension, use bolts to install the first support frame 20, the second support frame 21, and the third support frame 22 into the reserved mounting holes on the first lower yoke clamp 6 and the second lower yoke clamp 7, as shown in the attached diagram. Figure 1 As shown;

[0192] 21) The intermediate frequency transformer is placed on the ground using the first support frame 20, the second support frame 21, and the third support frame 22, as shown in the attached diagram. Figure 1 As shown;

[0193] 22) Ensure that the inlet directions of the water inlet pipes 23 and 24 on both sides of the core 1 are on the same side. Install the water inlet pipes 23 and 24 onto the first support frame 20 and the second support frame 21 respectively using bolts. The height of the water inlet pipe 23 is slightly lower than the height of the water return pipe 24, as shown in the attached diagram. Figure 1 As shown;

[0194] 23) Connect the side plates of the first water-cooled component 2 and the second water-cooled component 3 in series or parallel using flexible hoses. The water inlets of the first water-cooled component 2 and the first water-cooled component 3 are installed on the inlet pipe 23, and the water outlets of the first water-cooled component 2 and the second water-cooled component 3 are installed on the return pipe 24, completing the assembly of the ultra-thin silicon steel intermediate frequency transformer, as shown in the attached diagram. Figure 1 As shown.

[0195] Example 4

[0196] like Figure 16 As shown, the present invention also provides an electronic device, which may be a computer device, a microcontroller device, a smart mobile device, etc. The electronic device in this embodiment may include a processor, a memory, a transceiver component, etc. The memory, processor, and transceiver component are connected via a bus; the memory can be used to store executable programs, and an exemplary executable program may include instructions; the processor is used to execute the instructions stored in the memory. The memory can also be used to store data, which can be accessed and / or modified when instructions are executed.

[0197] The processor may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, and it is suitable for implementing one or more instructions. Specifically, it is suitable for loading and executing one or more instructions in the storage medium to implement the corresponding method flow or corresponding function, so as to implement the steps of the parameter setting method of a medium frequency transformer in the above embodiments.

[0198] Example 5

[0199] Based on the same inventive concept, this invention also provides a readable storage medium, specifically an electronic device readable storage medium (Memory). This readable storage medium is a memory device within an electronic device used to store programs and data. It is understood that the storage medium here can include both built-in storage media within the electronic device and extended storage media supported by the electronic device. The storage medium provides storage space, which stores the terminal's operating system. Furthermore, this storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more executable programs (including program code). It should be noted that the storage medium here can be high-speed RAM or non-volatile memory, such as at least one disk storage device. Loading and executing one or more instructions stored in the storage medium by the processor can implement the steps of the parameter tuning method for an intermediate frequency transformer in the above embodiments.

[0200] Comparative Example 1

[0201] This is a ±10kV, 200kVA, 600Hz intermediate frequency transformer made of ordinary-thickness grain-oriented silicon steel with a thickness E of 0.20mm. The core is a traditional single-frame, double-column stacked core structure with a window height of 393mm and a window width of 247mm. The high and low voltage windings are the same as in the embodiment, both using 0.10mm thick copper foil, manufactured using traditional dry-type transformer coil production methods through epoxy casting. The core lamination process is a traditional stacked core process, with the lamination shape formed by longitudinal shearing and 45° transverse shearing, and the stepping method is a traditional 3-stage stepping, 1-laminate-1-stack structure. The coil assembly method involves removing the upper yoke of the stacked core, fitting the coil onto the core column, and then reinstalling the removed upper yoke. The water circuit structure of Comparative Example 1 is exactly the same as in the embodiment, with the core columns all wrapped by water-cooled plates, the water-cooled plates being 10mm thick.

[0202] Comparative Example 2

[0203] This is a ±10kV, 200kVA, 600Hz intermediate frequency transformer made of ultra-thin oriented silicon steel strip with a thickness E of 0.10mm and a width of 120mm. The core is a traditional single-frame, double-column laminated core structure, with a core window height H of 368mm, a window width W of 233mm, and a lamination thickness D of 50mm. Both high and low voltage windings use 0.10mm thick copper foil, manufactured using traditional dry-type transformer coil production methods via epoxy casting. The core lamination process is a traditional laminated core process, with the lamination shape formed by longitudinal shearing and 45° transverse shearing. The stepping method is a traditional 3-stage stepping, 1-laminate-1-stack structure. The coil assembly method involves removing the upper yoke from the laminated core, fitting the coil onto the core column, and then reinstalling the removed upper yoke. The water channel structure of Comparative Example 2 is exactly the same as that of the Example 1. The iron core columns are all wrapped with water-cooled plates with a thickness of 10mm.

[0204] Comparative Example 3

[0205] This is a ±10kV, 200kVA, 600Hz intermediate frequency transformer made of ordinary-thickness grain-oriented silicon steel with a thickness E of 0.20mm. The core is a traditional single-frame, double-column stacked core structure with a window height of 393mm and a window width of 247mm. The high and low voltage windings are the same as in the previous example, both using 0.10mm thick copper foil and manufactured using traditional dry-type transformer coil fabrication methods via epoxy casting. The core lamination process is a traditional stacked core process, with the lamination shape formed by longitudinal shearing and 45° transverse shearing, and the stepping method is a traditional 3-stage stepping, 1 lamination 1-stack structure. The coil assembly method involves removing the upper yoke of the stacked core, fitting the coil onto the core column, and then reinstalling the removed upper yoke. The comparative example uses a traditional water system structure, with a spiral water pipe placed in the middle of the low-voltage coil; the water pipe is a 5mm inner diameter plastic flexible tube.

[0206] The performance of the intermediate frequency transformers obtained in Examples 1, 2, and 3 was tested, and the test results are shown in Table 2.

[0207] Table 2 Test Results of ±10kV, 200kVA, 600Hz Medium Frequency Transformers

[0208]

[0209] As shown in Table 2, compared to Comparative Example 1, the no-load loss, load loss, and rated efficiency of the embodiment are basically the same, while the core design magnetic flux density is increased by approximately 32.9%, the volume is reduced by approximately 10%, and the power density is increased by approximately 24.4%. Compared to Comparative Example 2, the no-load loss, load loss, and rated efficiency of the embodiment are basically the same, while the design magnetic flux density is increased by approximately 17%, the volume is reduced by approximately 6.2%, and the power density is increased by approximately 10.9%. This embodiment solves the problems of low cross-cutting and lamination accuracy and difficulties in inserting laminations using traditional assembly methods in the processing of ultra-thin grain-oriented silicon steel intermediate frequency transformer cores with existing stacked core structures, significantly reducing the volume of the intermediate frequency transformer and increasing the power density. Compared to Comparative Example 3, the no-load loss, load loss, and rated efficiency of the embodiment are basically the same, while the core design magnetic flux density is increased by approximately 32.9%, the volume is reduced by approximately 10%, and the power density is increased by approximately 21.7%. The water-cooling structure used in this embodiment replaces the traditional water-cooling structure with a plastic hose in the middle of the low-voltage winding in Comparative Example 3. This structure can cool both the core and the low-voltage winding simultaneously, solving the problem that the traditional water-cooling structure only cools the low-voltage winding and has poor cooling effect. It also solves the problem of core overheating. Compared to Comparative Example 3, the core temperature rise in this embodiment is reduced by approximately 2.5 times, and the winding temperature rise is reduced by approximately 20%.

[0210] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of the claims of the present invention pending approval.

Claims

1. A method for assembling a medium-frequency transformer, characterized in that: Intermediate frequency transformers, including: The core has a rectangular cross-section and step openings. The core has a multi-stage step structure and is assembled and stacked from ultra-thin oriented silicon steel sheets with a thickness of ≤0.10mm. The core includes an upper yoke, a lower yoke, a first core column, a second core column, and corner bends at the four corners of the rectangle that form a rectangular frame. The core also includes yoke clamps on both sides of the upper and lower yokes. High-voltage coil and low-voltage coil are concentrically wound on the first iron core column and the second iron core column; Assembly methods include: The high-voltage coil is fitted onto the low-voltage coil and placed horizontally on a horizontal assembly table, with the placement positions symmetrical from left to right. Place the third side plate of the first water-cooled component horizontally against the bottom of the inner side of the first rectangular low-voltage coil, and place the fourth side plate vertically against the right side of the inner side of the first rectangular low-voltage coil. Then fix the third side plate and the fourth side plate together. Complete the installation of the two side plates of the second water-cooled component at symmetrical positions in the same way. One end of the first upper yoke clamp is installed onto the second mounting claw of the third side plate of the first water-cooled component, and the other end is installed onto the symmetrical position of the second water-cooled component. The installation of the first lower yoke clamp is completed in the same way. At this time, the first upper yoke clamp, the first lower yoke clamp, the third side plate of the first water-cooled component, and the side plate of the symmetrical position of the second water-cooled component are horizontally placed to form the core lamination mounting plane. The upper yoke support plate and the first lower yoke support plate are respectively installed onto the first upper yoke clamp and the first lower yoke clamp. The pre-processed laminations are then inserted one by one from the inside to the outside on the lamination mounting plane of the core. All laminations are stacked in sequence, and the core is tightened to complete the core stacking. The first side plate of the first water-cooled component is installed between the first rectangular low-voltage coil and the first iron core column. The side plates of the second water-cooled component at symmetrical positions are installed in the same way. The iron core is tightened and fixed along the width of the window using the third transverse tie rod. The side plates of the water-cooled component are then fixedly connected. The second side plate of the first water-cooled component is installed between the first rectangular low-voltage coil and the first iron core column. The side plates of the second water-cooled component at symmetrical positions are installed in the same way, and the side plates of the water-cooled component are fixedly connected. Several longitudinal tie rods are used to longitudinally tighten and fix the first upper yoke clamp, the first lower yoke clamp, and the coil along the window height direction; the upper yoke support plate and the first lower yoke support plate are respectively installed onto the second upper yoke clamp and the second lower yoke clamp; and several longitudinal tie rods are used to longitudinally tighten and fix the second upper yoke clamp, the second lower yoke clamp, and the coil along the window height direction. The first upper yoke clamp and the second upper yoke clamp are connected and fastened by the first transverse tie rod, and the first lower yoke clamp and the second lower yoke clamp are connected and fastened by the second transverse tie rod. Install the E-type rubber pad in the middle area of ​​the lower surface of the lower yoke to ensure that the third transverse tie rod can be inserted into the two openings of the E-type rubber pad. Install the second lower yoke support plate; Erect and suspend the installed core, coils and clamps as a whole, install the first support frame, the second support frame and the third support frame, and place the intermediate frequency transformer on the ground after installation.

2. The assembly method of the intermediate frequency transformer according to claim 1, characterized in that, The process involves erecting and suspending the already installed core, coils, and clamps, installing the first, second, and third support frames, and then placing the intermediate frequency transformer on the ground. The process also includes: Install the inlet and outlet water pipes, with the inlet water pipe at a height slightly lower than the outlet water pipe. The assembly of the intermediate frequency transformer is completed by connecting the side plates of the first and second water-cooled components in series or parallel using flexible hoses.

3. A medium-frequency transformer, characterized in that, It is assembled using the assembly method of the intermediate frequency transformer according to any one of claims 1 to 2.

4. The intermediate frequency transformer according to claim 3, characterized in that, Also includes: The water-cooled component includes a first water-cooled component (2) and a second water-cooled component (3), wherein the first water-cooled component (2) and the second water-cooled component (3) respectively surround and clamp the first iron core column (103) and the second iron core column (104). The inlet pipe (23) and return pipe (24) are located on both sides of the core (1) and are used to supply water to the water-cooled component, and the connecting hose (25) connects the inlet pipe (23) and return pipe (24).

5. The intermediate frequency transformer according to claim 3, characterized in that, The first core column (103) and the second core column (104) are multi-level step structures with symmetrical spatial distribution.

6. The intermediate frequency transformer according to claim 3, characterized in that, The yoke clamps include a first upper yoke clamp (4), a second upper yoke clamp (5), a first lower yoke clamp (6), and a second lower yoke clamp (7); the first upper yoke clamp (4) and the second upper yoke clamp (5) interact to clamp the upper yoke (101); the first lower yoke clamp (6) and the second lower yoke clamp (7) interact to clamp the lower yoke (102).

7. The intermediate frequency transformer according to claim 6, characterized in that, The first upper yoke clamp (4) is connected to the second upper yoke clamp (5) through the first transverse pull rod (8) located at both ends of the upper yoke clamp. The axial direction of the first transverse pull rod (8) is parallel to the thickness direction of the iron core (1). The first lower yoke clamp (6) is connected to the second lower yoke clamp (7) through the second transverse pull rod (9) located at both ends of the lower yoke clamp. The axial direction of the second transverse pull rod (9) is parallel to the thickness direction of the iron core (1).

8. The intermediate frequency transformer according to claim 3, characterized in that, The high-voltage coil includes a first rectangular high-voltage coil (11) and a second rectangular high-voltage coil (13); the low-voltage coil includes a first rectangular low-voltage coil (10) and a second rectangular low-voltage coil (12); the first rectangular high-voltage coil (11) and the first rectangular low-voltage coil (10) are mounted on the first iron core column (103); the second rectangular high-voltage coil (13) and the second rectangular low-voltage coil (12) are mounted on the second iron core column (104).

9. The intermediate frequency transformer according to claim 4, characterized in that, The first water-cooled component (2) includes a first side plate (201) located on the outside of the core (1) and closely attached to the first core column (103), a second side plate (202) connected to the first side plate (201) and closely attached to the first core column (103), a third side plate (203), and a fourth side plate (204) located on the inside of the core (1) and closely attached to the first core column (103) opposite to the first side plate (201). The first side plate (201), the second side plate (202), the third side plate (203), and the fourth side plate (204) are fixedly connected to each other and connected to the inlet pipe (23) and the return pipe (24) through water pipes. The second water-cooled component (3) has the same structure as the first water-cooled component (2) and is symmetrically arranged around the second iron core column (104).

10. The intermediate frequency transformer according to claim 9, characterized in that, The second side plate (202) and the third side plate (203) are each provided with a first mounting claw (205) and a second mounting claw (206). The first water-cooling component (2) is connected to the first upper iron yoke clamp (4) and the second upper iron yoke clamp (5) through the first mounting claw (205) and the second mounting claw (206).

11. The intermediate frequency transformer according to claim 6, characterized in that, The first upper yoke clamp (4) and the second upper yoke clamp (5) are connected to the first lower yoke clamp (6) and the second lower yoke clamp (7) through multiple longitudinal tie rods (15) located at both ends of the upper yoke clamp. The axial direction of the longitudinal second upper yoke clamp (5) is parallel to the height direction of the iron core (1). The first water-cooled component (2) is connected to the second water-cooled component (3) through the third transverse tie rod (26) located at both ends of the water-cooled component. The axial direction of the third transverse tie rod (26) is parallel to the width direction of the iron core (1).

12. The intermediate frequency transformer according to claim 6, characterized in that, An upper yoke support plate (16) is provided between the first upper yoke clamp (4), the second upper yoke clamp (5), and the upper yoke (101). A first lower yoke support plate (17) is provided between the first lower yoke clamp (6), the second lower yoke clamp (7) and the lower yoke (102), and a second lower yoke support plate (18) is provided at the bottom of the first lower yoke clamp (6) and the second lower yoke clamp (7). The bottom ends of the lower yoke clamp are provided with a first support frame (20) and a second support frame (21), and the bottom of the second lower yoke support plate (18) is provided with a third support frame (22).

13. The intermediate frequency transformer according to claim 12, characterized in that, The space between the second lower yoke support plate (18) and the lower yoke (102) is filled with E-type rubber pads (19).

14. The intermediate frequency transformer according to claim 13, characterized in that, The yoke clamp includes a web (401) that is close to the yoke, a reinforcing rib (402), and multiple I-shaped limb plates (403) distributed along the length of the web (401). The limb plates (403) are located at the position of the longitudinal tension rod (15) and are used to press the coil.

15. A method for parameter tuning of the intermediate frequency transformer according to any one of claims 3 to 14, characterized in that, Includes the following steps: Determine the core's parameter data, wherein the core parameter data includes: core window width. W Iron core window height H Core thickness D Thickness of ultra-thin grain-oriented silicon steel laminate E ; Based on the thickness of the iron core lamination D Thickness of ultra-thin grain-oriented silicon steel laminate E Determine the number of ultra-thin grain-oriented silicon steel laminations DT ; Based on the width of the iron core window W and the height of the iron core window H Determine the number of stacked groups i Number of stacked pieces per group m The corresponding dimensions of each laminate at the positions of the upper yoke (101), lower yoke (102), first core column (103), second core column (104), and corner bend (105).

16. The tuning method according to claim 15, characterized in that, The dimensions of each stacked sheet include: The length of the ultra-thin oriented silicon steel lamination located in the upper part of the first core column (103) , The length of the ultra-thin grain-oriented silicon steel lamination located at the upper corner bend (105) of the first core column (103) , The length of the ultra-thin oriented silicon steel laminations in the upper yoke (101) , The length of the ultra-thin grain-oriented silicon steel lamination located at the right corner bend (105) of the upper yoke (101) , The length of the ultra-thin oriented silicon steel lamination located in the upper part of the second core column (104) , The length of the ultra-thin grained silicon steel lamination located in the lower part of the second core column (104) , The length of the ultra-thin grain-oriented silicon steel lamination located at the lower corner bend (105) of the second core column (104) , The length of the ultra-thin oriented silicon steel laminations in the lower yoke (102) , The length of the ultra-thin grain-oriented silicon steel lamination located at the left corner bend (105) of the lower yoke (102) , The length of the ultra-thin grained silicon steel lamination located in the lower part of the first core column (103) ; in, n Indicates counting from the inside out. n Stacked pieces.

17. The tuning method according to claim 15, characterized in that, The number of stacked pieces DT Determine using the following formula: ； in, This indicates rounding up, that is, the smallest integer greater than or equal to a.

18. The tuning method according to claim 16, characterized in that, The number of stacked groups i Number of pieces in each stack m The calculation method for the size of each stacked piece is as follows: Based on the width of the iron core window W Iron core window height H ,set up The initial length is y , The initial length is d The bending angle of the iron core is AN Calculate the dimensions of the first stacked piece: Based on the size of the first laminate, the step spacing is set to... x Calculate the first n The dimensions of the stacked sheets; After calculating the bending dimensions of each piece, the following judgment is made: like Then continue calculating the bending dimensions for the next piece; like This completes the calculation of the dimensions of the first set of stacked sheets, determining the number of sheets in each set. m ; Based on the number of stacked pieces DT and the number of pieces in each stack m Calculate the number of stacked groups i ; If the number of stacked pieces DT Number of pieces that can be stacked in each group m If divisible, then the number of pieces in each stack is 1. m ; If the number of stacked pieces DT Number of pieces that cannot be stacked in each group m Divisible by, then the 2nd to i- The number of stacked pieces in group 1 is m , No. i The number of stacked pieces is r ; Calculate the size of each stack based on the size of the first stack and the step spacing x.

19. The tuning method according to claim 18, characterized in that, The dimensions of the first set of laminates are calculated according to the following formula: in, ， ， ， ，n= 1, 2, 3 …m .

20. The tuning method according to claim 18, characterized in that, No. i The stack size of the group is calculated according to the following formula: in, j =2, 3… i ; k =1, 2, 3…, m .

21. An electronic device, characterized in that, include: At least one processor and memory; The memory and processor are connected via a bus; The memory is used to store one or more programs; When the one or more programs are executed by the at least one processor, the parameter tuning method for the intermediate frequency transformer as described in any one of claims 15 to 20 is implemented.

22. A readable storage medium, characterized in that, It contains an execution program, which, when executed, implements the parameter setting method for the intermediate frequency transformer as described in any one of claims 15 to 20.

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