High-voltage low-capacity oil immersed transformer and processing method thereof

Abstract

The invention 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.The high-voltage low-capacity oil-immersed transformer comprises an oil-immersed transformer body, an epoxy zinc-rich primer layer is fixedly arranged on the outer wall of the oil-immersed transformer body, and an insulating paint layer is fixedly arranged on the outer wall of the epoxy zinc-rich primer layer; according to the high-voltage low-capacity oil immersed transformer and the processing method thereof, through the winding mechanism, the wire winding range can be adjusted according to the coil winding requirement, it is ensured that a wire is wound on the surface of the iron core in order, the winding efficiency and accuracy are improved, and the high-voltage low-capacity oil immersed transformer is suitable for large-scale popularization and application. Automatic and accurate winding operation is achieved, the situation that the wire winding range needs to be manually controlled, time and labor are consumed, and adjustment accuracy and stability are difficult to guarantee is avoided, iron cores of different specifications and sizes can be limited and fixed through the mounting mechanism, machining flexibility is improved, and the situation that the iron cores are prone to moving in the winding process is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of the production and processing of oil-immersed transformers, and particularly relates to a high-voltage low-capacity oil-immersed transformer and a processing method thereof. Background Art

[0002] The oil-immersed transformer is a new type of high-performance transformer with a more reasonable structure and better performance. Its three core columns of the three-dimensional wound core are arranged in an equilateral triangle in a three-dimensional manner. There is no air gap in its magnetic circuit, the winding is tighter, the lengths of the three magnetic circuits are the same and all are the shortest, and the cross-sectional area of the core column is closer to a circle. Therefore, its performance is further improved, the loss is reduced, and the noise is reduced. This product is more suitable for the transformation of urban and rural power grids, industrial and mining enterprise power grids, and is more suitable for transformers used in combined transformers and prefabricated substations.

[0003] As an important electrical equipment, the high-voltage low-capacity oil-immersed transformer is widely used in various power systems. In the traditional processing process of the oil-immersed transformer, the winding process is one of the key links, and its quality directly affects the performance and service life of the transformer. During the winding process, the fixing stability of the core directly affects the winding quality of the coil and the performance of the transformer. In the traditional processing method, the fixing method of the core is often relatively simple and difficult to adapt to cores of different specifications and sizes, resulting in easy movement of the core during the winding process, affecting the accuracy and stability of winding, and manual control of the wire winding range is required, which is time-consuming and laborious, and it is difficult to ensure the accuracy and stability of adjustment. Summary of the Invention

[0004] The purpose of the invention is as follows: through the winding mechanism, the wire winding range can be adjusted according to the needs of coil winding, ensuring that the wire is neatly and orderly wound on the surface of the core, improving the winding efficiency and accuracy, realizing automatic and precise winding operations, avoiding the need for manual control of the wire winding range, which is time-consuming and laborious and difficult to ensure the accuracy and stability of adjustment. Through the installation mechanism, cores of different specifications and sizes can be limited and fixed, improving the flexibility of processing and avoiding the easy movement of the core during the winding process, affecting the accuracy and stability of winding. Through the linkage components, the linkage between the winding mechanism and the installation mechanism can be realized, improving the overall equipment's collaborative working efficiency and automation degree.

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

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

[0007] S1. Iron core processing: Select cold-rolled grain-oriented silicon steel sheets with high magnetic permeability as the iron core material, cut the silicon steel sheets into specific shapes and sizes, and stack them into the iron core by stacking;

[0008] S2. Winding: Place the iron core on the mounting mechanism in the winding frame, wind the wire on the wire frame around the iron core through the winding mechanism according to the specified number of turns and method, add insulating materials in due course during the winding process, perform the winding operation repeatedly according to the design requirements to form the winding, and dry and impregnate the winding to enhance its insulation performance;

[0009] S3. Fuel tank manufacturing: Welding steel plates into fuel tank shells;

[0010] S4. Transformer assembly: install the iron core and winding into the oil tank, ensure that the position relationship and insulation distance between the iron core and winding meet the design requirements, and then install the insulating sleeve, oil pillow and gas relay in sequence;

[0011] S5. Oil immersion treatment and testing: Inject high-quality transformer oil into the oil tank, immerse the transformer in oil to form the oil-immersed transformer body, and then conduct power-on test and leakage test to ensure that the transformer meets the design requirements and has good operating performance.

[0012] Among them, in S1-S5, the mounting mechanism is arranged in the winding frame, the wire rack is fixedly arranged on one side of the inner wall of the winding frame, the mounting mechanism includes a rotating table, a mounting frame, a mounting frame, a limit frame, a fixing component and an adjusting component, the rotating table is rotatably embedded in the bottom of the inner wall of the winding frame, the mounting frame is fixedly arranged on the top of the outer wall of the rotating table, the mounting frame is slidably embedded in the inner wall of the mounting frame, the limit frame is arranged on the adjusting component, the fixing component is arranged on the limit frame, and the adjusting component is arranged in the mounting frame.

[0013] Among them, the adjusting component includes a first forward and reverse motor and a bidirectional threaded rod, the first forward and reverse motor is installed on the bottom of the inner wall of the installation frame by bolts, the bidirectional threaded rod is fixedly set at the output end of the first forward and reverse motor, the mounting frame is threadedly connected to the outer wall of the bidirectional threaded rod, and the limit frame is threadedly connected to the outer wall of the bidirectional threaded rod.

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

[0015] Among them, the driving assembly includes a circular plate, a plurality of cam holes, a plurality of push rods, a rotating motor and a fixed frame, the fixed frame is fixedly arranged on the top of the outer wall of the limit frame, the rotating motor is installed on the top of the outer wall of the fixed frame by bolts, the circular plate is fixedly arranged on the output end of the rotating motor, each of the cam holes is equidistantly opened on the top of the outer wall of the circular plate along the circumferential direction, each of the push rods is slidably embedded in the inner wall of the cam hole, and each push rod is fixedly arranged on the top of the outer wall of the limit rod.

[0016] Wherein, the winding mechanism is arranged in the winding frame, and the winding mechanism includes a guide frame, a moving part and a linkage part. The guide frame is arranged on the moving part, and the linkage part is arranged in the winding frame.

[0017] Among them, the moving component includes a guide frame, a servo motor, a rotating shaft, a rotating plate, a connecting piece, a distance adjustment component and a connecting rod. The guide frame is fixedly arranged at the bottom of the inner wall of the winding frame, the guide frame is slidably embedded in the inner wall of the guide frame, the servo motor is installed on one side of the inner wall of the winding frame by bolts, the rotating shaft is fixedly arranged at the output end of the servo motor, the rotating plate is fixedly arranged on one side of the outer wall of the rotating shaft, the connecting piece is arranged on the distance adjustment component, the distance adjustment component is arranged on the rotating plate, one end of the connecting rod is movably sleeved on the outer wall of the connecting piece, and the other end of the connecting rod is movably sleeved on the outer wall of the guide frame.

[0018] Among them, the distance adjustment component includes a second forward and reverse motor, a first threaded rod and a guide hole, the second forward and reverse motor is installed on one side of the outer wall of the rotating plate by bolts, the first threaded rod is fixedly arranged at the output end of the second forward and reverse motor, the connecting piece is threadedly connected to the outer wall of the first threaded rod, the guide hole is opened on the outer wall of the rotating plate, and the connecting piece is slidably embedded in the inner wall of the guide hole.

[0019] Among them, the linkage component includes 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, and the connecting shaft is rotatably embedded in one side of the inner wall of the winding frame. The small gear is fixedly sleeved on the outer wall of the connecting shaft, and the small gear is meshed with the large gear. The rotating shaft is rotatably embedded in one side of the inner wall of the winding 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 of the transmission wheels is transmitted by 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 table, and the second bevel gear is meshed 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 the present invention, through the winding mechanism, the winding range of the wire can be adjusted according to the requirements of coil winding, ensuring that the wire is neatly and orderly wound on the surface of the iron core, improving the winding efficiency and accuracy, realizing automatic and precise winding operation, and avoiding the need for manual control of the wire winding range, which is time-consuming and laborious and difficult to ensure the accuracy and stability of the adjustment.

[0022] (2) In the present invention, through the installation mechanism, iron cores of different specifications and sizes can be limited and fixed, improving the flexibility of processing and avoiding the easy movement of the iron core during the winding process, which affects the accuracy and stability of winding.

[0023] (3) In the present invention, through the linkage components, the linkage between the winding mechanism and the installation mechanism can be realized, improving the collaborative working efficiency and automation degree of the overall equipment. Description of the Drawings

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

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

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

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

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

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

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

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

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

[0033] Figure 10 is of the present invention Figure 2 The enlarged schematic diagram at A in.

[0034] Markings in the figure: 1. Oil-immersed transformer body; 2. Winding frame; 3. Installation mechanism; 301. Rotary table; 302. Installation frame; 303. Installation rack; 304. Limiting frame; 305. First forward and reverse motor; 306. Bidirectional threaded rod; 307. Limiting rod; 308. Fixed rod; 309. Circular plate; 310. Cam hole; 311. Push rod; 312. Rotating motor; 313. Fixed frame; 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 and reverse motor; 509. First threaded rod; 510. Guide hole; 511. Large gear; 512. Connecting shaft; 513. Small gear; 514. Driving wheel; 515. Rotating shaft; 516. Transmission belt; 517. First bevel gear; 518. Second bevel gear; 6. Epoxy zinc-rich primer layer; 7. Insulating paint layer; 8. Polyurethane coating layer. Detailed implementation mode

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

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

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

[0038] A processing method for 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 a core by the stacking method;

[0040] Step 2, winding: the iron core is placed on the mounting mechanism 3 in the winding frame 2, and the wire on the wire frame 4 is wound on the iron core through the winding mechanism 5 according to the specified number of turns and method. Insulating materials are added in time during the winding process. According to the design requirements, the winding operation is repeated to form a winding, and the winding is dried and impregnated to enhance its insulation performance;

[0041] Step 3: Fuel tank manufacturing: Welding steel plates into fuel tank shells;

[0042] Step 4: Transformer assembly: Install the core and winding into the oil tank, ensure that the position relationship and insulation distance between the core and winding meet the design requirements, and then install the insulating sleeve, oil pillow and gas relay in sequence;

[0043] Step 5, oil immersion treatment and testing: inject high-quality transformer oil into the oil tank, perform oil immersion treatment on the transformer to form an oil-immersed transformer body 1, and then perform power-on test and leakage test to ensure that the transformer meets the design requirements and has good operating performance.

[0044] In this embodiment: 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, and the wires on the lead frame 4 are wound around 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 arranged in the winding frame 2, the wire rack 4 is fixedly arranged on one side of the inner wall of the winding frame 2, the mounting mechanism 3 includes a rotating table 301, a mounting frame 302, a mounting frame 303, a limiting frame 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 frame 2, the mounting frame 302 is fixedly arranged on the top of the outer wall of the rotating table 301, the mounting frame 303 is slidably embedded in the inner wall of the mounting frame 302, the limiting frame 304 is arranged on the adjusting component, the fixing component is arranged on the limiting frame 304, and the adjusting component is arranged in the mounting frame 302.

[0046] In this embodiment: Through the installation mechanism 3, the iron core can be limited and fixed according to its size, the stability of winding on the surface of the iron core can be increased, and the winding requirements of coils with different specifications and sizes can be met. By rotating the rotating table 301 within the winding frame 2, rotational support is provided for the mounting frame 302 and the components thereon. Through the sliding fit between the mounting frame 302 and the mounting bracket 303, a guiding effect is exerted on the movement of the mounting bracket 303. Through the adjusting component, the mounting bracket 303 can be driven to approach or move away from the limiting bracket 304, so as to limit the iron core according to its size. Through the fixing component, the iron core is clamped and fixed to ensure that the iron core does not move during the winding process, improving the accuracy and stability of winding.

[0047] Specifically, the adjusting component includes a first forward and reverse motor 305 and a bidirectional threaded rod 306. The first forward and reverse motor 305 is installed at the bottom of the inner wall of the mounting frame 302 by bolts, the bidirectional threaded rod 306 is fixedly arranged at the output end of the first forward and reverse motor 305, the mounting bracket 303 is threadedly connected to the outer wall of the bidirectional threaded rod 306, and the limiting bracket 304 is threadedly connected to the outer wall of the bidirectional threaded rod 306.

[0048] In this embodiment: When the first forward and reverse motor 305 drives the bidirectional threaded rod 306 to rotate when powered on, the mounting bracket 303 can be driven to approach or move away from the limiting bracket 304. The mounting bracket 303 is located on the left-handed thread of the bidirectional threaded rod 306, and the limiting bracket 304 is located on the right-handed thread of the bidirectional threaded rod 306.

[0049] Specifically, the fixing component includes 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 bracket 304, each fixing rod 308 is fixedly arranged at the bottom of the outer wall of the limiting rod 307, and the driving assembly is arranged on the limiting bracket 304.

[0050] In this embodiment: The limiting rod 307 in the limiting bracket 304 plays a role in limiting the iron core. By driving the fixing rod 308 on the limiting rod 307 to move through the driving assembly, the inside of the iron core can be clamped and fixed, increasing the stability of the iron core installation.

[0051] Specifically, the driving assembly includes a circular plate 309, a plurality of cam holes 310, a plurality of push rods 311, a rotating motor 312 and a fixing bracket 313. The fixing bracket 313 is fixedly arranged at the top of the outer wall of the limiting bracket 304, the rotating motor 312 is installed at the top of the outer wall of the fixing bracket 313 by bolts, the circular plate 309 is fixedly arranged at the output end of the rotating motor 312, each cam hole 310 is equidistantly arranged along the circumferential direction at the top of the outer wall of the circular plate 309, each push rod 311 is slidably embedded in the inner wall of the cam hole 310, and each push rod 311 is fixedly arranged at the top of the outer wall of the limiting rod 307.

[0052] In this embodiment: Through the fixing frame 313, it is convenient to install 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 limit rod 307 to move within the limit frame 304. Both the limit rod 307 and the fixed rod 308 movably penetrate the outer wall of the mounting frame 303. The limit rod 307 limits the top of the iron core, and the fixed rod 308 realizes the automatic fixing and releasing of the iron core, facilitating the installation and disassembly of the iron core, and improving the operation efficiency and convenience.

[0053] Specifically, in S1 - S5, the winding mechanism 5 is arranged inside the winding machine frame 2. The winding mechanism 5 includes a guiding frame 501, a moving component, and a linkage component. The guiding frame 501 is arranged on the moving component, and the linkage component is arranged inside the winding machine frame 2.

[0054] In this embodiment: The automatic adjustment of the winding position and distance is realized through the winding mechanism 5, simplifying the operation process to meet different coil winding requirements. The installation mechanism 3 cooperates with the winding mechanism 5 to ensure the consistency and accuracy of the winding process, improving the performance and reliability of the oil - immersed transformer body 1, significantly enhancing the quality and stability of the oil - immersed transformer body 1, extending the service life of the product. Through the guiding frame 501, it is used to guide the winding direction and position. By driving the guiding frame 501 to move through the moving component, automatic movement and guiding of the winding can be achieved, ensuring the neatness and orderliness of the wire during the winding process, and improving the winding efficiency and accuracy. Through the linkage component, the linkage between the winding mechanism 5 and the installation mechanism 3 is realized, improving the collaborative working efficiency and automation degree of the overall equipment.

[0055] Specifically, the moving component includes a guiding frame 502, a servo motor 503, a rotating shaft 504, a rotating plate 505, a connecting piece 506, a distance - adjusting component, and a connecting rod 507. The guiding frame 502 is fixedly arranged at the bottom of the inner wall of the winding machine frame 2. The guiding frame 501 is slidably embedded in the inner wall of the guiding frame 502. The servo motor 503 is installed on one side of the inner wall of the winding machine frame 2 through bolts. The rotating shaft 504 is fixedly arranged at the output end of the servo motor 503. The rotating plate 505 is fixedly arranged on the outer wall of the rotating shaft 504 on one side. The connecting piece 506 is arranged on the distance - adjusting component. The distance - adjusting component 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 guiding frame 501.

[0056] In this embodiment: the guide frame 502 guides the movement of the guide frame 501, and the servo motor 503 drives the rotating shaft 504 and the rotating plate 505 to rotate when powered on. The distance adjustment component and the connecting rod 507 adjust the movement range of the guide frame 501 in the guide frame 502. 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 distance adjustment component 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 installed on one side of the outer wall of the rotating plate 505 by bolts. The first threaded rod 509 is fixedly arranged at the output end of the second forward and reverse motor 508. The connecting piece 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, and the connecting piece 506 is slidably embedded in the inner wall of the guide hole 510.

[0058] In this embodiment, the second forward and reverse motor 508 drives the first threaded rod 509 to rotate when powered, driving the connecting member 506 to move in the guide hole 510, so as to change the moving range of the guide frame 501 in 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, the small gear 513 is fixedly sleeved on the outer wall of the connecting shaft 512, and the small gear 513 is meshed with the large gear 511, and the rotating shaft 515 is rotatably embedded in one side of the inner wall of the winding frame 2, one of the transmission wheels 514 is fixedly sleeved on the outer wall of the rotating shaft 515, and the other transmission wheel 514 is fixedly sleeved on the outer wall of the connecting shaft 512. Each transmission wheel 514 is transmitted through a transmission 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, and the second bevel gear 518 is meshed with the first bevel gear 517.

[0060] In this embodiment: By rotating the rotating shaft 504, the large gear 511 can be driven to rotate, driving the connecting shaft 512 on the small gear 513 to rotate within the winding frame 2. In cooperation with the transmission wheel 514 and the transmission belt 516, the rotating shaft 515 drives the first bevel gear 517 to rotate, and the first bevel gear 517 drives the rotating table 301 on the second bevel gear 518 to rotate, realizing the linkage between the winding mechanism 5 and the mounting mechanism 3, improving the collaborative working efficiency and automation degree of the overall equipment. The power sources of the first forward and reverse motor 305, the rotating motor 312, the servo motor 503, and the second forward and reverse motor 508 are from an external power source, and they should be electrically connected to the external power source. The internal circuit principle structure belongs to the common knowledge of those skilled in the art and will not be introduced in detail here. Their models can be selected according to actual usage situations.

[0061] The following is a detailed description of a processing method for a high-voltage, low-capacity oil-immersed transformer provided in an embodiment of the present invention, and its use method includes the following steps: Step 1, processing of the original iron core: select cold-rolled grain-oriented silicon steel sheets with high magnetic permeability as the iron core material, cut the silicon steel sheets into specific shapes and sizes, and stack the silicon steel sheets into an iron core by stacking; Step 2, winding: put the iron core on the mounting frame 303, start the first forward and reverse motor 305, the first forward and reverse motor 305 drives the bidirectional threaded rod 306 to rotate, and can drive the mounting frame 303 and the limit frame 304 to move closer to or away from each other, so that the limit frame 304 is located at the top of the iron core, and then start the rotating motor 312, the rotating motor 312 drives the circular plate 309 to rotate , change the position of each cam hole 310, the cam hole 310 pushes the push rod 311, so that the limit rod 307 moves in the limit frame 304, so that the limit rod 307 and the fixing rod 308 are moved out of the mounting frame 303, the limit rod 307 limits the top of the iron core, and the fixing rod 308 fixes the inside of the iron core to increase the stability of the iron core installation, and then according to the position of the iron core, start the second forward and reverse motor 508, the second forward and reverse motor 508 drives the first threaded rod 509 to rotate, and drives the connecting member 506 to move in the guide hole 510, so as to change the range of movement of the guide frame 501 in the guide frame 502, so that the wire can be evenly wound and distributed on the surface of the iron core, and then the wire on the wire frame 4 is pulled The servo motor 503 is started to drive the rotating shaft 504 and the 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, so that the top end of the connecting rod 507 pulls the guide frame 501 to move in the guide frame 502. When the rotating shaft 504 rotates, it can drive the large gear 511 to rotate, driving the connecting shaft 512 on the small gear 513 to rotate in the winding frame 2, and cooperate with the transmission wheel 514 and the transmission belt 516 to make the rotating shaft 515 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, so that the iron core on the rotating table 301 rotates, so that the wire is wound on the iron core according to the specified number of turns and method. In the process of winding, insulating materials are added in time, and the winding operation is carried out repeatedly according to the design requirements to form the winding, and the winding is dried and impregnated to enhance its insulation performance; Step three, oil tank manufacturing: steel plates are welded into the oil tank shell; Step four, transformer assembly: the iron core and winding are installed inside the oil tank, ensuring that the positional relationship and insulation distance between the iron core and the winding meet the design requirements, and then the insulating sleeve, oil pillow and gas relay are installed in sequence; Step five: oil immersion treatment and testing: high-quality transformer oil is injected into the oil tank, the transformer is oil-immersed to form an oil-immersed transformer body 1, and then a power-on test and a leakage test are carried out to ensure that the transformer meets the design requirements and has good operating performance.

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

Claims

1. A high voltage, low capacity oil immersed transformer, characterized in that: The invention comprises an oil-immersed transformer body (1), wherein an epoxy zinc-rich primer layer (6) is fixedly provided on the outer wall of the oil-immersed transformer body (1), an insulating paint layer (7) is fixedly provided on the outer wall of the epoxy zinc-rich primer layer (6), and a polyurethane coating layer (8) is fixedly provided on the outer wall of the insulating paint layer (7).

2. A method for processing a high-voltage, low-capacity oil-immersed transformer, which is used to prepare a high-voltage, low-capacity oil-immersed transformer as claimed in claim 1, characterized in that: The following steps are involved: S1. Iron core processing: Select cold-rolled grain-oriented silicon steel sheets with high magnetic permeability as the iron core material, cut the silicon steel sheets into specific shapes and sizes, and stack them into the iron core by stacking; S2. Winding: placing an iron core on a mounting mechanism (3) in a winding frame (2), winding a wire on a wire frame (4) on the iron core through a winding mechanism (5) in accordance with a prescribed number of turns and in a prescribed manner, adding insulating material in due course during the winding process, and performing the winding operation repeatedly in accordance with design requirements to form a winding, and drying and impregnating the winding to enhance its insulation performance; S3. Fuel tank manufacturing: Welding steel plates into fuel tank shells; S4. Transformer assembly: install the iron core and winding into the oil tank, ensure that the position relationship and insulation distance between the iron core and winding meet the design requirements, and then install the insulating sleeve, oil pillow and gas relay in sequence; S5. Oil immersion treatment and testing: high-quality transformer oil is injected into the oil tank to perform oil immersion treatment on the transformer to form an oil-immersed transformer body (1), and then a power-on test and a leakage test are performed to ensure that the transformer meets the design requirements and has good operating performance.

3. A method for processing a high-voltage low-capacity oil-immersed transformer as claimed in claim 2, characterized in that: In S1-S5, the mounting mechanism (3) is arranged in the winding frame (2), the wire frame (4) is fixedly arranged on one side of the inner wall of the winding frame (2), the mounting mechanism (3) comprises a rotating table (301), a mounting frame (302), a mounting frame (303), a limiting frame (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 frame (2), the mounting frame (302) is fixedly arranged on the top of the outer wall of the rotating table (301), the mounting frame (303) is slidably embedded in the inner wall of the mounting frame (302), the limiting frame (304) is arranged on the adjusting component, the fixing component is arranged on the limiting frame (304), and the adjusting component is arranged in the mounting frame (302).

4. A method for processing a high-voltage low-capacity oil-immersed transformer as claimed in claim 3, characterized in that: 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 installed on the bottom of the inner wall of the installation frame (302) by means of bolts; the bidirectional threaded rod (306) is fixedly arranged on the output end of the first forward and reverse motor (305); the installation frame (303) is threadedly connected to the outer wall of the bidirectional threaded rod (306); and the limiting frame (304) is threadedly connected to the outer wall of the bidirectional threaded rod (306).

5. A method for processing a high-voltage low-capacity oil-immersed transformer as claimed in claim 4, characterized in that: The fixing component comprises a plurality of limiting rods (307), a plurality of fixing rods (308) and a driving assembly, each of the limiting rods (307) is slidably embedded in the inner wall of the limiting frame (304), each of the fixing rods (308) is fixedly arranged at the bottom of the outer wall of the limiting rod (307), and the driving assembly is arranged on the limiting frame (304).

6. A method for processing a high-voltage low-capacity oil-immersed transformer as claimed in claim 5, characterized in that: 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 installed on the top of the outer wall of the fixing frame (313) by means of bolts; the circular plate (309) is fixedly arranged on the output end of the rotating motor (312); each of the cam holes (310) is equidistantly arranged on the top of the outer wall of the circular plate (309) along the circumferential direction; each of the push rods (311) is slidably embedded in the inner wall of the cam hole (310); and each of the push rods (311) is fixedly arranged on the top of the outer wall of the limiting rod (307).

7. A method for processing a high-voltage low-capacity oil-immersed transformer as claimed in claim 6, characterized in that: In S1-S5, the winding mechanism (5) is arranged in the winding frame (2), and 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 frame (2).

8. A method for processing a high-voltage low-capacity oil-immersed transformer as claimed in claim 7, characterized in that: The movable component comprises a guide frame (502), a servo motor (503), a rotating shaft (504), a rotating plate (505), a connecting piece (506), a pitch adjustment assembly and a connecting rod (507); the guide frame (502) is fixedly arranged at the bottom of the inner wall of the winding frame (2); the guide frame (501) is slidably 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 frame (2) by bolts; the rotating shaft (504) is fixedly arranged at 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 pitch adjustment assembly; the pitch adjustment 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).

9. A method for processing a high-voltage, low-capacity oil-immersed transformer as claimed in claim 8, characterized in that: The pitch adjustment assembly comprises 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 mounted on one side of the outer wall of the rotating plate (505) by means of bolts; the first threaded rod (509) is fixedly arranged on the output end of the second forward and reverse motor (508); the connecting member (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); and the connecting member (506) is slidably embedded in the inner wall of the guide hole (510).

10. A method for processing a high-voltage, low-capacity oil-immersed transformer as claimed in claim 9, characterized in that: The linkage component comprises 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); the small gear (513) is fixedly sleeved on the outer wall of the connecting shaft (512), and the small gear (513) is meshed with the large gear (511); the rotating shaft (515) is rotatably embedded in one side of the inner wall of the winding frame (2), one of the transmission wheels (514) is fixedly sleeved on the outer wall of the rotating shaft (515), and the other transmission wheel (514) is fixedly sleeved on the outer wall of the connecting shaft (512), and each of the transmission wheels (514) is transmitted through a transmission 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 platform (301), and the second bevel gear (518) is meshed with the first bevel gear (517).

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