A high-voltage low-capacity oil-immersed transformer and a processing method thereof

Abstract

The application discloses a high-voltage low-capacity oil-immersed transformer and a processing method thereof, and belongs to the technical field of oil-immersed transformer production and processing, and comprises an oil-immersed transformer body, wherein the outer wall of the oil-immersed transformer body is fixedly provided with an epoxy zinc-rich primer layer, the outer wall of the epoxy zinc-rich primer layer is fixedly provided with an insulating paint layer, and the outer wall of the insulating paint layer is fixedly provided with a polyurethane coating layer. Through the winding mechanism, the winding range of the wire can be adjusted according to the winding requirement of the coil, the wire is ensured to be neatly and orderly wound on the surface of the iron core, the winding efficiency and accuracy are improved, the automatic and accurate winding operation is realized, manual control of the winding range of the wire is avoided, time and effort are saved, and the accuracy and stability of the adjustment can be ensured. Through the mounting mechanism, the iron cores with different specifications and sizes can be fixed and limited, the flexibility of processing is improved, and the iron cores are prevented from being easily moved during the winding process.

Description

Technical Field

[0001] This invention belongs to the field of oil-immersed transformer manufacturing and processing technology, specifically a high-voltage, low-capacity oil-immersed transformer and its processing method. Background Technology

[0002] Oil-immersed transformers are a new type of high-performance transformer with a more rational structure and superior performance. Their three-dimensional wound core has three core columns arranged in an equilateral triangle, resulting in no air gaps in the magnetic circuit, tighter winding, and consistent and shortest lengths for the three magnetic circuits. The cross-sectional area of ​​the core column is closer to a circle, thus further improving performance, reducing losses, and lowering noise. This product is more suitable for power grid transformation in urban and rural areas and industrial and mining enterprises, and is also more suitable for combined transformers and transformers used in prefabricated substations.

[0003] High-voltage, low-capacity oil-immersed transformers are important electrical equipment widely used in various power systems. In the traditional processing of oil-immersed transformers, the winding process is one of the key steps, and its quality directly affects the performance and service life of the transformer. During the winding process, the stability of the iron core directly affects the winding quality of the coil and the performance of the transformer. In traditional processing methods, the iron core fixing method is often relatively simple and difficult to adapt to iron cores of different specifications and sizes. This leads to the iron core being easy to move during the winding process, affecting the accuracy and stability of the winding. In addition, it requires manual control of the winding range of the conductor, which is time-consuming and laborious, and it is difficult to ensure the accuracy and stability of the adjustment. Summary of the Invention

[0004] The purpose of this invention is to: adjust the winding range of the conductor according to the coil winding requirements through the winding mechanism, ensuring that the conductor is neatly and orderly wound on the surface of the iron core, improving winding efficiency and accuracy, realizing automated and precise winding operations, avoiding the need for manual control of the conductor winding range, which is time-consuming, labor-intensive, and difficult to guarantee the accuracy and stability of adjustment; limit and fix iron cores of different specifications and sizes through the installation mechanism, improving processing flexibility, preventing the iron core from easily moving during the winding process, which would affect the accuracy and stability of winding; and realize the linkage between the winding mechanism and the installation mechanism through the linkage component, improving the overall collaborative work efficiency and automation level of the equipment.

[0005] The technical solution adopted in this invention is as follows: a high-voltage, low-capacity oil-immersed transformer, comprising an oil-immersed transformer body, an epoxy zinc-rich primer layer fixedly disposed on the outer wall of the oil-immersed transformer body, an insulating varnish layer fixedly disposed on the outer wall of the epoxy zinc-rich primer layer, and a polyurethane coating layer fixedly disposed on the outer wall of the insulating varnish layer.

[0006] A method for manufacturing a high-voltage, low-capacity oil-immersed transformer includes the following steps:

[0007] S1. Core processing: Select cold-rolled grain-oriented silicon steel sheets with high magnetic permeability as core material, cut the silicon steel sheets into specific shapes and sizes, and stack the silicon steel sheets into cores using a stacking method.

[0008] S2, Winding: The iron core is placed on the mounting mechanism in the winding machine frame, and the wires on the wire frame are wound onto the iron core by the winding mechanism according to the specified number of turns and method. Insulation material is added in a timely manner during the winding process. The winding operation is repeated in accordance with the design requirements to make the winding. The winding is dried and impregnated to enhance its insulation performance.

[0009] S3. Fuel tank manufacturing: The fuel tank shell is welded from steel plates;

[0010] S4. Transformer assembly: Install the iron core and windings into the oil tank, ensuring that the positional relationship and insulation distance between the iron core and windings meet the design requirements, and then install the insulating bushing, oil conservator and gas relay in sequence.

[0011] S5. Oil Immersion Treatment and Testing: High-quality transformer oil is injected into the oil tank to perform oil immersion treatment on the transformer, forming the oil-immersed transformer body. Then, power connection test and leakage test are carried out to ensure that the transformer meets the design requirements and has good operating performance.

[0012] In S1-S5, the installation mechanism is located inside the winding machine frame, and the wire frame is fixedly installed on one side of the inner wall of the winding machine frame. The installation mechanism includes a rotating table, an installation frame, an installation bracket, a limiting bracket, a fixing component, and an adjusting component. The rotating table is rotatably embedded in the bottom of the inner wall of the winding machine frame, the installation frame is fixedly installed on the top of the outer wall of the rotating table, the installation bracket is slidably embedded in the inner wall of the installation frame, the limiting bracket is installed on the adjusting component, the fixing component is installed on the limiting bracket, and the adjusting component is located inside the installation frame.

[0013] The adjusting component includes a first forward and reverse motor and a bidirectional threaded rod. The first forward and reverse motor is bolted to the bottom of the inner wall of the mounting frame. The bidirectional threaded rod is fixedly disposed at the output end of the first forward and reverse motor. The mounting bracket is threaded to the outer wall of the bidirectional threaded rod, and the limiting bracket is threaded to the outer wall of the bidirectional threaded rod.

[0014] The fixing component includes multiple limiting rods, multiple fixing rods, and a driving assembly. Each limiting rod is slidably embedded in the inner wall of the limiting frame, each fixing rod is fixedly disposed at the bottom of the outer wall of the limiting rod, and the driving assembly is disposed on the limiting frame.

[0015] The drive assembly includes a circular plate, multiple cam holes, multiple push rods, a rotary motor, and a fixed frame. The fixed frame is fixedly mounted on the top of the outer wall of the limiting frame. The rotary motor is bolted to the top of the outer wall of the fixed frame. The circular plate is fixedly mounted on the output end of the rotary motor. Each cam hole is equidistantly opened on the top of the outer wall of the circular plate along the circumferential direction. Each push rod is slidably embedded in the inner wall of the cam hole, and each push rod is fixedly mounted on the top of the outer wall of the limiting rod.

[0016] The winding mechanism is located inside the winding machine frame. The winding mechanism includes a guide frame, a moving component, and a linkage component. The guide frame is located on the moving component, and the linkage component is located inside the winding machine frame.

[0017] The moving component includes a guide frame, a servo motor, a rotating shaft, a rotating plate, a connector, an adjustment assembly, and a connecting rod. The guide frame is fixedly installed at the bottom of the inner wall of the winding machine frame, and the guide frame is slidably embedded in the inner wall of the guide frame. The servo motor is bolted to one side of the inner wall of the winding machine frame. The rotating shaft is fixedly installed at the output end of the servo motor. The rotating plate is fixedly installed on one side of the outer wall of the rotating shaft. The connector is installed on the adjustment assembly, and the adjustment assembly is installed on the rotating plate. One end of the connecting rod is movably sleeved on the outer wall of the connector, and the other end of the connecting rod is movably sleeved on the outer wall of the guide frame.

[0018] The adjustable distance assembly includes a second forward and reverse motor, a first threaded rod, and a guide hole. The second forward and reverse motor is bolted to one side of the outer wall of the rotating plate. The first threaded rod is fixedly disposed at the output end of the second forward and reverse motor. The connector is threaded to the outer wall of the first threaded rod. The guide hole is opened in the outer wall of the rotating plate. The connector is slidably embedded in the inner wall of the guide hole.

[0019] The linkage components include a large gear, a connecting shaft, a small gear, two transmission wheels, a rotating shaft, a transmission belt, a first bevel gear, and a second bevel gear. The large gear is fixedly sleeved on the outer wall of the rotating shaft. The connecting shaft is rotatably embedded in one side of the inner wall of the winding machine frame. The small gear is fixedly sleeved on the outer wall of the connecting shaft and meshes with the large gear. The rotating shaft is rotatably embedded in one side of the inner wall of the winding machine frame. One of the transmission wheels is fixedly sleeved on the outer wall of the rotating shaft, and the other transmission wheel is fixedly sleeved on the outer wall of the connecting shaft. Each transmission wheel is connected to the other via a transmission belt. The first bevel gear is fixedly sleeved on the outer wall of the rotating shaft, and the second bevel gear is fixedly sleeved on the outer wall of the rotating platform and meshes with the first bevel gear.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] (1) In this invention, the winding mechanism can adjust the winding range of the conductor according to the winding needs of the coil, ensuring that the conductor is neatly and orderly wound on the surface of the iron core, improving the winding efficiency and accuracy, realizing automated and precise winding operation, avoiding the need to manually control the winding range of the conductor, which is time-consuming and laborious, and makes it difficult to guarantee the accuracy and stability of the adjustment.

[0022] (2) In this invention, the installation mechanism can limit and fix iron cores of different specifications and sizes, improve the processing flexibility, and prevent the iron cores from moving easily during the winding process, which would affect the accuracy and stability of the winding.

[0023] (3) In this invention, the linkage between the winding mechanism and the installation mechanism can be realized through the linkage component, thereby improving the overall efficiency and automation of the equipment. Attached Figure Description

[0024] Figure 1 This is a perspective view of the oil-immersed transformer body of the present invention;

[0025] Figure 2 This is a partial cross-sectional view of the body of the oil-immersed transformer of the present invention;

[0026] Figure 3 This is a first-view perspective perspective view of the winding frame of the present invention;

[0027] Figure 4 This is a second-view perspective perspective view of the winding frame of the present invention;

[0028] Figure 5 This is a cross-sectional view of the winding frame of the present invention;

[0029] Figure 6 This is a partial exploded view of the winding mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the rotating plate of the present invention;

[0031] Figure 8 This is a partial cross-sectional view of the mounting frame of the present invention;

[0032] Figure 9 This is an exploded view of the mounting mechanism of the present invention;

[0033] Figure 10 For the present invention Figure 2 Enlarged diagram of point A in the middle.

[0034] The diagram shows: 1. Oil-immersed transformer body; 2. Winding frame; 3. Mounting mechanism; 301. Rotary table; 302. Mounting frame; 303. Mounting bracket; 304. Limiting bracket; 305. First forward / reverse motor; 306. Bidirectional threaded rod; 307. Limiting rod; 308. Fixing rod; 309. Circular plate; 310. Cam hole; 311. Push rod; 312. Rotating motor; 313. Fixing bracket; 4. Conductor frame; 5. Winding mechanism; 501. Guide frame; 502. Guide. Frame; 503, Servo motor; 504, Rotating shaft; 505, Rotating plate; 506, Connector; 507, Connecting rod; 508, Second forward / reverse motor; 509, First threaded rod; 510, Guide hole; 511, Large gear; 512, Connecting shaft; 513, Small gear; 514, Transmission wheel; 515, Rotating shaft; 516, Transmission belt; 517, First bevel gear; 518, Second bevel gear; 6, Epoxy zinc-rich primer layer; 7, Insulating varnish layer; 8, Polyurethane coating layer. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] Reference Figures 1-10 The present invention provides a technical solution: a high-voltage, low-capacity oil-immersed transformer, comprising an oil-immersed transformer body 1, an epoxy zinc-rich primer layer 6 fixedly disposed on the outer wall of the oil-immersed transformer body 1, an insulating varnish layer 7 fixedly disposed on the outer wall of the epoxy zinc-rich primer layer 6, and a polyurethane coating layer 8 fixedly disposed on the outer wall of the insulating varnish layer 7.

[0037] In this embodiment: the epoxy zinc-rich primer layer 6 contains abundant zinc powder, which can form a strong protective film on the metal surface, effectively blocking moisture and oxygen, preventing the intrusion of corrosive media, and enhancing the corrosion resistance of the oil-immersed transformer. The insulating varnish layer 7 has good insulation performance and heat resistance, which can enhance the insulation capability of the oil-immersed transformer shell. The polyurethane coating layer 8 can effectively resist ultraviolet radiation and prevent the insulating varnish layer 7 from fading and aging.

[0038] A method for manufacturing a high-voltage, low-capacity oil-immersed transformer includes the following steps:

[0039] Step 1, Core processing: Select cold-rolled grain-oriented silicon steel sheets with high magnetic permeability as the core material, cut the silicon steel sheets into specific shapes and sizes, and stack the silicon steel sheets into the core using a stacking method;

[0040] Step 2, Winding: Place the iron core on the mounting mechanism 3 in the winding frame 2, and wind the wires on the conductor frame 4 onto the iron core through the winding mechanism 5 according to the specified number of turns and method. Add insulation material as needed during the winding process, and perform the winding operation repeatedly according to the design requirements to make a winding. Dry and impregnate the winding to enhance its insulation performance.

[0041] Step 3: Fuel tank manufacturing: Weld steel plates to form the fuel tank shell;

[0042] Step 4: Transformer assembly: Install the core and windings into the tank, ensuring that the positional relationship and insulation distance between the core and windings meet the design requirements. Then install the insulating bushings, oil conservator, and gas relay in sequence.

[0043] Step 5, Oil Immersion Treatment and Testing: High-quality transformer oil is injected into the oil tank to perform oil immersion treatment on the transformer, forming the oil-immersed transformer body 1. Then, power connection test and leakage test are performed to ensure that the transformer meets the design requirements and has good operating performance.

[0044] In this implementation plan: cold-rolled grain-oriented silicon steel sheets with high magnetic permeability are used as the core material, which reduces the hysteresis loss and eddy current loss of the core and improves the conversion efficiency of the transformer. According to the characteristics of high voltage and low capacity, the number of turns and wire diameter of the winding are controlled. The wires on the conductor frame 4 are wound onto the core on the mounting mechanism 3 through the winding mechanism 5 to ensure that the transformer can operate stably under high voltage input.

[0045] Specifically, in S1-S5, the mounting mechanism 3 is located inside the winding machine frame 2, and the wire frame 4 is fixedly installed on one side of the inner wall of the winding machine frame 2. The mounting mechanism 3 includes a rotating table 301, a mounting frame 302, a mounting bracket 303, a limiting bracket 304, a fixing component, and an adjusting component. The rotating table 301 is rotatably embedded in the bottom of the inner wall of the winding machine frame 2. The mounting frame 302 is fixedly installed on the top of the outer wall of the rotating table 301. The mounting bracket 303 is slidably embedded in the inner wall of the mounting frame 302. The limiting bracket 304 is installed on the adjusting component, the fixing component is installed on the limiting bracket 304, and the adjusting component is installed inside the mounting frame 302.

[0046] In this embodiment: the mounting mechanism 3 can limit and fix the iron core according to its size, increasing the stability of the winding on the iron core surface and meeting the winding requirements of coils of different specifications and sizes. The rotating table 301 rotates within the winding frame 2, providing rotational support for the mounting frame 302 and its components. The sliding fit between the mounting frame 302 and the mounting bracket 303 guides the movement of the mounting bracket 303. The adjusting component can drive the mounting bracket 303 and the limiting frame 304 to move closer or further apart, so as to limit the iron core according to its size. The fixing component clamps and fixes the iron core, ensuring that the iron core will not move during the winding process, thus improving the accuracy and stability of the winding.

[0047] Specifically, the adjustment components include a first forward and reverse motor 305 and a bidirectional threaded rod 306. The first forward and reverse motor 305 is bolted to the bottom of the inner wall of the mounting frame 302. The bidirectional threaded rod 306 is fixedly set at the output end of the first forward and reverse motor 305. The mounting bracket 303 is threaded to the outer wall of the bidirectional threaded rod 306, and the limiting bracket 304 is threaded to the outer wall of the bidirectional threaded rod 306.

[0048] In this embodiment: when the first forward and reverse motor 305 is energized, it drives the bidirectional threaded rod 306 to rotate, which can drive the mounting bracket 303 and the limiting bracket 304 to move closer or further apart. The mounting bracket 303 is located on the left-hand thread of the bidirectional threaded rod 306, and the limiting bracket 304 is located on the right-hand thread of the bidirectional threaded rod 306.

[0049] Specifically, the fixing component includes multiple limiting rods 307, multiple fixing rods 308, and a driving assembly. Each limiting rod 307 is slidably embedded in the inner wall of the limiting frame 304, each fixing rod 308 is fixedly set at the bottom of the outer wall of the limiting rod 307, and the driving assembly is set on the limiting frame 304.

[0050] In this embodiment: the limiting rod 307 in the limiting frame 304 plays a limiting role in the iron core. The fixed rod 308 on the limiting rod 307 is driven to move by the driving component, which can clamp and fix the inside of the iron core, increasing the stability of the iron core installation.

[0051] Specifically, the drive assembly includes a circular plate 309, multiple cam holes 310, multiple push rods 311, a rotary motor 312, and a fixing frame 313. The fixing frame 313 is fixedly installed on the top of the outer wall of the limiting frame 304. The rotary motor 312 is installed on the top of the outer wall of the fixing frame 313 by bolts. The circular plate 309 is fixedly installed on the output end of the rotary motor 312. Each cam hole 310 is equidistantly opened on the top of the outer wall of the circular plate 309 along the circumferential direction. Each push rod 311 is slidably embedded in the inner wall of the cam hole 310, and each push rod 311 is fixedly installed on the top of the outer wall of the limiting rod 307.

[0052] In this embodiment: the fixed frame 313 facilitates the installation of the rotating motor 312. When the rotating motor 312 is powered on, it drives the circular plate 309 to rotate, which can change the position of each cam hole 310. The cam hole 310 pushes the push rod 311, causing the limiting rod 307 to move within the limiting frame 304. Both the limiting rod 307 and the fixing rod 308 are movably inserted through the outer wall of the mounting frame 303. The limiting rod 307 limits the top of the iron core, and the fixing rod 308 realizes the automatic fixing and release of the iron core, so as to complete the installation and disassembly of the iron core and improve the operation efficiency and convenience.

[0053] Specifically, in S1-S5, the winding mechanism 5 is located inside the winding frame 2. The winding mechanism 5 includes a guide frame 501, a moving part, and a linkage part. The guide frame 501 is located on the moving part, and the linkage part is located inside the winding frame 2.

[0054] In this embodiment: the winding mechanism 5 realizes automatic adjustment of winding position and distance, simplifies the operation process, and meets the winding requirements of different coils. The mounting mechanism 3 cooperates with the winding mechanism 5 to ensure the consistency and accuracy of the winding process, improve the performance and reliability of the oil-immersed transformer body 1, significantly improve the quality and stability of the oil-immersed transformer body 1, and extend the service life of the product. The guide frame 501 is used to guide the winding direction and position. The guide frame 501 is driven to move by the moving parts, which can realize automated movement and guide winding, ensure that the line is neat and orderly during the winding process, and improve winding efficiency and accuracy. The linkage component realizes the linkage between the winding mechanism 5 and the mounting mechanism 3, which improves the overall collaborative work efficiency and automation level of the equipment.

[0055] Specifically, the moving parts include a guide frame 502, a servo motor 503, a rotating shaft 504, a rotating plate 505, a connector 506, an adjusting assembly, and a connecting rod 507. The guide frame 502 is fixedly installed on the bottom of the inner wall of the winding machine frame 2. The guide frame 501 is slidably embedded in the inner wall of the guide frame 502. The servo motor 503 is installed on one side of the inner wall of the winding machine frame 2 by bolts. The rotating shaft 504 is fixedly installed on the output end of the servo motor 503. The rotating plate 505 is fixedly installed on one side of the outer wall of the rotating shaft 504. The connector 506 is installed on the adjusting assembly, and the adjusting assembly is installed on the rotating plate 505. One end of the connecting rod 507 is movably sleeved on the outer wall of the connector 506, and the other end of the connecting rod 507 is movably sleeved on the outer wall of the guide frame 501.

[0056] In this embodiment: the guide frame 502 guides the movement of the guide frame 501. The servo motor 503 drives the rotating shaft 504 and the rotating plate 505 to rotate when powered on. The range of movement of the guide frame 501 within the guide frame 502 is adjusted by the pitch adjustment component and the connecting rod 507. The winding path of the wire can be adjusted according to the length of the iron core to meet different winding requirements.

[0057] Specifically, the pitch adjustment assembly includes a second forward and reverse motor 508, a first threaded rod 509, and a guide hole 510. The second forward and reverse motor 508 is bolted to one side of the outer wall of the rotating plate 505. The first threaded rod 509 is fixedly disposed at the output end of the second forward and reverse motor 508. The connector 506 is threadedly connected to the outer wall of the first threaded rod 509. The guide hole 510 is opened on the outer wall of the rotating plate 505. The connector 506 is slidably embedded in the inner wall of the guide hole 510.

[0058] In this embodiment: when the second forward and reverse motor 508 is energized, it drives the first threaded rod 509 to rotate, which drives the connector 506 to move within the guide hole 510, so as to change the range of movement of the guide frame 501 within the guide frame 502.

[0059] Specifically, the linkage components include a large gear 511, a connecting shaft 512, a small gear 513, two transmission wheels 514, a rotating shaft 515, a transmission belt 516, a first bevel gear 517, and a second bevel gear 518. The large gear 511 is fixedly sleeved on the outer wall of the rotating shaft 504, the connecting shaft 512 is rotatably embedded in one side of the inner wall of the winding frame 2, and the small gear 513 is fixedly sleeved on the outer wall of the connecting shaft 512, with the small gear 513 meshing with the large gear 511. 515 is rotatably embedded in one side of the inner wall of the winding machine frame 2. One drive wheel 514 is fixedly sleeved on the outer wall of the rotating shaft 515, and the other drive wheel 514 is fixedly sleeved on the outer wall of the connecting shaft 512. Each drive wheel 514 is driven by a drive belt 516. The first bevel gear 517 is fixedly sleeved on the outer wall of the rotating shaft 515, and the second bevel gear 518 is fixedly sleeved on the outer wall of the rotating table 301. The second bevel gear 518 meshes with the first bevel gear 517.

[0060] In this embodiment: the rotation of the rotating shaft 504 drives the large gear 511 to rotate, which in turn drives the connecting shaft 512 on the small gear 513 to rotate within the winding frame 2. In conjunction with the transmission wheel 514 and the transmission belt 516, the rotating shaft 515 drives the first bevel gear 517 to rotate. The first bevel gear 517 drives the rotary table 301 on the second bevel gear 518 to rotate, thereby realizing the linkage between the winding mechanism 5 and the mounting mechanism 3, improving the overall collaborative work efficiency and automation level of the equipment. The power of the first forward and reverse motor 305, the rotating motor 312, the servo motor 503, and the second forward and reverse motor 508 comes from an external power source and should be electrically connected to the external power source. The internal circuit principle and structure are common knowledge to those skilled in the art and will not be described in detail here. The model can be selected according to the actual use.

[0061] The following is a detailed description of a processing method for a high-voltage, low-capacity oil-immersed transformer provided by an embodiment of the present invention. The method includes the following steps: Step 1, Core processing: Select cold-rolled grain-oriented silicon steel sheets with high magnetic permeability as the core material. Cut the silicon steel sheets into specific shapes and sizes, and stack them into a core using a stacking method; Step 2, Winding: Place the core on the mounting frame 303, start the first forward and reverse motor 305, which drives the bidirectional threaded rod 306 to rotate, driving the mounting frame 303 and the limiting frame 304 to move closer or further apart, so that the limiting frame 304 is located at the top of the core. Then start the rotation motor 312, which drives the circular plate 309 to rotate. The position of each cam hole 310 is changed, and the cam hole 310 pushes the push rod 311, causing the limiting rod 307 to move within the limiting frame 304. This allows the limiting rod 307 and the fixing rod 308 to move out of the mounting frame 303. The limiting rod 307 limits the top of the iron core, and the fixing rod 308 fixes the inside of the iron core, increasing the stability of the iron core installation. Then, according to the position of the iron core, the second forward and reverse motor 508 is started. The second forward and reverse motor 508 drives the first threaded rod 509 to rotate, driving the connector 506 to move within the guide hole 510, so as to change the range of movement of the guide frame 501 within the guide frame 502, thereby allowing the wire to be evenly wound and distributed on the surface of the iron core. Then, the wire on the wire frame 4 is pulled. Upon reaching the iron core, the servo motor 503 is activated, driving the rotating shaft 504 and rotating plate 505 to rotate. The connecting piece 506 on the rotating plate 505 pulls the bottom end of the connecting rod 507 to move, causing the top end of the connecting rod 507 to pull the guide frame 501 to move within the guide frame 502. Simultaneously, the rotating shaft 504 rotates, driving the large gear 511 to rotate, which in turn drives the connecting shaft 512 on the small gear 513 to rotate within the winding frame 2. This, in conjunction with the transmission wheel 514 and transmission belt 516, causes the rotating shaft 515 to drive the first bevel gear 517 to rotate. The first bevel gear 517 drives the rotating table 301 on the second bevel gear 518 to rotate, causing the iron core on the rotating table 301 to rotate, thus winding the wire around the iron core according to the specified number of turns and method. The process involves adding insulating material during the winding process, repeating the winding operation according to design requirements to form a winding. The winding is then dried and impregnated to enhance its insulation performance. Step three: Tank manufacturing: The tank shell is welded from steel plates. Step four: Transformer assembly: The core and windings are installed inside the tank, ensuring the positional relationship and insulation distance between the core and windings meet design requirements. Insulating bushings, oil conservators, and gas relays are then installed sequentially. Step five: Oil immersion treatment and testing: High-quality transformer oil is injected into the tank to immerse the transformer, forming the oil-immersed transformer body 1. Power-on and leakage tests are then performed to ensure the transformer meets design requirements and has good operating performance.

[0062] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method of processing a high-voltage low-capacity oil-immersed transformer, characterized by, The oil-immersed transformer comprises an oil-immersed transformer body (1), an outer wall of the oil-immersed transformer body (1) is fixedly provided with an epoxy zinc-rich primer layer (6), an outer wall of the epoxy zinc-rich primer layer (6) is fixedly provided with an insulating paint layer (7), and an outer wall of the insulating paint layer (7) is fixedly provided with a polyurethane coating layer (8); The method comprises the following steps: S1, core processing: selecting a cold-rolled grain-oriented silicon steel sheet with a high magnetic permeability coefficient as a core material, cutting the silicon steel sheet into a specific shape and size, and stacking the silicon steel sheet into a core in a stacking manner; S2, winding: placing the core on an installation mechanism (3) in a winding rack (2), winding a wire on the core according to a specified number of turns and a mode through a wire frame (4) and a winding mechanism (5), adding an insulating material in a timely manner during the winding process, and repeatedly performing winding operations according to design requirements to manufacture a winding, and drying and impregnating the winding to enhance the insulation performance thereof; S3, oil tank manufacturing: welding a steel plate into an oil tank shell; S4, transformer assembly: installing the core and the winding into the oil tank, ensuring that the positional relationship and insulation distance between the core and the winding meet the design requirements, and then sequentially installing an insulating sleeve, an oil pillow and a gas relay; S5, oil-immersed treatment and testing: injecting high-quality transformer oil into the oil tank, performing oil-immersed treatment on the transformer to form an oil-immersed transformer body (1), and then performing power-on testing and leakage testing to ensure that the transformer meets the design requirements and has good operating performance; In S1-S5, the installation mechanism (3) is arranged in the winding rack (2), the wire frame (4) is fixedly arranged on one side of the inner wall of the winding rack (2), the installation mechanism (3) comprises a rotating table (301), an installation frame (302), an installation rack (303), a limiting rack (304), a fixing component and an adjusting component, the rotating table (301) is rotatably embedded in the bottom of the inner wall of the winding rack (2), the installation frame (302) is fixedly arranged on the top of the outer wall of the rotating table (301), the installation rack (303) is slidably embedded in the inner wall of the installation frame (302), the limiting rack (304) is arranged on the adjusting component, the fixing component is arranged on the limiting rack (304), and the adjusting component is arranged in the installation frame (302); The adjusting component comprises a first forward and reverse motor (305) and a bidirectional threaded rod (306), the first forward and reverse motor (305) is mounted on the bottom of the inner wall of the installation frame (302) through bolts, the bidirectional threaded rod (306) is fixedly arranged on the output end of the first forward and reverse motor (305), and the installation rack (303) is threadedly connected to the outer wall of the bidirectional threaded rod (306). The fixing component comprises a plurality of limiting rods (307), a plurality of fixing rods (308) and a driving assembly, each limiting rod (307) is slidably embedded in the inner wall of the limiting rack (304), each fixing rod (308) is fixedly arranged on the bottom of the outer wall of the limiting rod (307), and the driving assembly is arranged on the limiting rack (304). The driving assembly comprises a circular plate (309), a plurality of cam holes (310), a plurality of push rods (311), a rotating motor (312) and a fixing frame (313), the fixing frame (313) is fixedly arranged on the top of the outer wall of the limiting frame (304), the rotating motor (312) is mounted on the top of the outer wall of the fixing frame (313) by bolts, the circular plate (309) is fixedly arranged on the output end of the rotating motor (312), each cam hole (310) is equidistantly arranged on the top of the outer wall of the circular plate (309) in the circumferential direction, each push rod (311) is slidingly embedded in the inner wall of the cam hole (310), and each push rod (311) is fixedly arranged on the top of the outer wall of the limiting rod (307).

2. A method of manufacturing a high-voltage low-capacity oil-immersed transformer according to claim 1, characterized in that, In S1-S5, the winding mechanism (5) is arranged in the winding rack (2), the winding mechanism (5) comprises a guide frame (501), a moving part and a linkage part, the guide frame (501) is arranged on the moving part, and the linkage part is arranged in the winding rack (2).

3. A method of manufacturing a high voltage low capacity oil immersed transformer as claimed in claim 2, wherein: The moving part comprises a guide frame (502), a servo motor (503), a rotating shaft (504), a rotating plate (505), a connecting piece (506), a distance adjusting assembly and a connecting rod (507), the guide frame (502) is fixedly arranged on the bottom of the inner wall of the winding rack (2), the guide frame (501) is slidingly embedded in the inner wall of the guide frame (502), the servo motor (503) is mounted on one side of the inner wall of the winding rack (2) by bolts, the rotating shaft (504) is fixedly arranged on the output end of the servo motor (503), the rotating plate (505) is fixedly arranged on one side of the outer wall of the rotating shaft (504), the connecting piece (506) is arranged on the distance adjusting assembly, the distance adjusting assembly is arranged on the rotating plate (505), one end of the connecting rod (507) is movably sleeved on the outer wall of the connecting piece (506), and the other end of the connecting rod (507) is movably sleeved on the outer wall of the guide frame (501).

4. A method of manufacturing a high voltage low capacity oil immersed transformer as claimed in claim 3, wherein: The distance adjusting assembly comprises a second forward-reverse motor (508), a first threaded rod (509) and a guide hole (510), the second forward-reverse motor (508) is mounted on one side of the outer wall of the rotating plate (505) by bolts, the first threaded rod (509) is fixedly arranged on the output end of the second forward-reverse motor (508), the connecting piece (506) is threadedly connected to the outer wall of the first threaded rod (509), and the guide hole (510) is arranged on the outer wall of the rotating plate (505).

5. A method of manufacturing a high voltage low capacity oil immersed transformer as claimed in claim 4, wherein: The linkage component includes a large gear (511), a connecting shaft (512), a small gear (513), two transmission wheels (514), a rotating shaft (515), a transmission belt (516), a first bevel gear (517) and a second bevel gear (518), the large gear (511) is fixedly sleeved on the outer wall of the rotating shaft (504), the connecting shaft (512) is rotatably embedded on one side of the inner wall of the winding machine frame (2), the small gear (513) is fixedly sleeved on the outer wall of the connecting shaft (512), and the small gear (513) is engaged with the large gear (511), the rotating shaft (515) is rotatably embedded on one side of the inner wall of the winding machine frame (2), one of the transmission wheels (514) is fixedly sleeved on the outer wall of the rotating shaft (515), the other transmission wheel (514) is fixedly sleeved on the outer wall of the connecting shaft (512), each transmission wheel (514) is driven by the transmission belt (516), the first bevel gear (517) is fixedly sleeved on the outer wall of the rotating shaft (515), the second bevel gear (518) is fixedly sleeved on the outer wall of the rotating table (301), and the second bevel gear (518) is engaged with the first bevel gear (517).

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