A winding structure and winding device for an oil-immersed transformer

Abstract

This invention discloses an oil-immersed transformer winding structure and winding device, relating to the field of oil-immersed transformer technology. It aims to solve the technical problem of functional limitations of coil groups in traditional oil-immersed transformer winding structures, including a lower clamp; an upper clamp is provided above the lower clamp via an iron core. This invention, by wrinkling the outer insulation layer of the coil group, effectively adapts the tension and tensile force of the bending arc during the bending process of the oil-immersed transformer winding onto the iron core. This method facilitates shape adjustment of the single coil group to adapt to coil groups with different structural shapes. Essentially, this method involves pre-processing the coil group under certain size specifications, and then adjusting it according to the actual specifications of the required oil-immersed transformer winding structure. Simultaneously, the wrinkling of the outer insulation layer during adjustment reduces the possibility of insulation layer damage.

Description

Technical Field

[0001] This invention relates to the field of oil-immersed transformer technology, and more specifically, to an oil-immersed transformer winding structure and winding device. Background Technology

[0002] Technical limitations of traditional oil-immersed transformer windings:

[0003] Existing windings use a fixed geometry design, and traditional cylindrical windings result in a space wastage rate of 30-40%.

[0004] According to International Electrotechnical Commission (IEC) standards, insufficient shape adaptability results in approximately 15% of transformers worldwide requiring custom modifications each year.

[0005] Existing oil-immersed transformer winding structures are mostly manufactured through one-to-one standardization or customization, which leads to functional limitations of the coil group in existing oil-immersed transformer winding structures. Therefore, it is necessary to propose a winding structure and winding device that can adapt to different geometries and reduce the adverse effects of adaptation and adjustment on the coil group and its insulation layer. Summary of the Invention

[0006] The purpose of this invention is to provide a winding structure and winding device for an oil-immersed transformer to solve the technical problem of functional limitations of coil groups in traditional oil-immersed transformer windings.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an oil-immersed transformer winding structure, including a lower clamp; an upper clamp is provided above the lower clamp via an iron core; wherein the iron core is a detachable structure, and a plurality of coil groups are provided on the iron core; the coil groups include low-voltage wire groups and high-voltage wire groups; wherein the low-voltage wire groups and high-voltage wire groups are wrapped with an insulating layer on their outer sides; wherein the insulating layer has a corrugated structure to adapt to bending deformation.

[0008] This invention folds the outer insulation layer of the coil group, enabling the oil-immersed transformer winding to effectively adapt to the tension and tensile force of the bending arc during the winding process onto the iron core. This method facilitates shape adjustment of the single coil group to accommodate coil groups with different structural shapes. Essentially, this method involves pre-processing the coil group under certain dimensional specifications, then adjusting it according to the actual specifications of the required oil-immersed transformer winding structure. Simultaneously, the folding of the outer insulation layer during adjustment reduces the likelihood of insulation damage.

[0009] A winding device includes a main support base; slide rails are provided on both sides of the main support base; an inner support mechanism is provided through the middle of the main support base; drive blocks are provided on the upper and lower sides of the slide rails respectively; a dual-mode drive mechanism is provided on the drive blocks; wherein, the dual-mode drive mechanism includes a connecting frame; the connecting frame is arranged on the drive blocks; a central drive shaft, an oscillation drive shaft and a fixed drive shaft are provided on the connecting frame.

[0010] Preferably, the input end of the central drive shaft is provided with a drive motor A via a mounting base; the end of the yaw drive shaft is provided with a synchronous pulley A; and the connecting frame is provided with a drive motor B via a mounting base; and the output end of the drive motor B is provided with a synchronous pulley B; and the synchronous pulley B is connected to the synchronous pulley A via a synchronous belt; the fixed drive shaft is rotatably arranged on the connecting frame via a drive motor C.

[0011] Preferably, a worm gear adjustment assembly is provided on the side of the yaw drive shaft, and an extension shaft is provided at the output end of the worm gear adjustment assembly; an adjustable drive assembly is provided at the ends of the center drive shaft, the extension shaft, and the fixed drive shaft; wherein, an operating groove is provided at the end of the adjustable drive assembly; wherein, the internal gaps of several operating grooves constitute an operating cavity; wherein, the gap between two operating cavities constitutes a bearing shaft cylinder.

[0012] Preferably, the adjustable drive assembly includes an operating adjustment motor respectively arranged on the ends of the central drive shaft, the extension shaft, and the fixed drive shaft; an operating rotating seat is provided at the end of the operating adjustment motor; an operating groove is provided at the end of the operating rotating seat; hemispherical hook-and-loop protrusions are provided on both sides of the operating cavity; a gear seat is provided at the output end of the operating adjustment motor; a connecting shaft is provided at the end of the gear seat; a spiral extrusion groove is provided on the connecting shaft; a rotating gear is movably arranged on the connecting shaft; an extrusion protrusion is provided on the inner wall of the rotating gear; wherein, the gear seat and the rotating gear are elastically connected by a spring.

[0013] Preferably, the bearing shaft cylinder has connecting teeth on both sides that mesh with the output end of the adjustable drive assembly; and the bearing shaft cylinder has a hook groove at its end that slides with the hook protrusion.

[0014] Preferably, the inner support mechanism is rotatably connected to the main support base, and several unfolded ends of the inner support mechanism are respectively provided with several elastic legs by springs.

[0015] Preferably, the dual-mode drive mechanism is configured as a lifting and adjusting mechanism by means of a drive block, a slide rail and a cylinder, and the two vertically arranged dual-mode drive mechanisms move relative to each other; the two vertically arranged dual-mode drive mechanisms move closer to each other, and the drive motor B rotates to drive the extension shaft to rotate and adjust, so that the bearing cylinder is adjusted to a cylindrical state; the two vertically arranged dual-mode drive mechanisms move further apart, and the drive motor B rotates to drive the extension shaft to rotate and adjust, so that the bearing cylinder is adjusted to an elliptical state.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention, by wrinkling the outer insulation layer of the coil group, enables the oil-immersed transformer winding to effectively adapt to the tension and tensile force of the bending arc during the winding process onto the iron core. This method facilitates the shape adjustment of the single coil group to adapt to coil groups with different structural shapes. Essentially, this method involves pre-processing the coil group under certain size specifications, and then adjusting the coil group according to the actual specifications of the required oil-immersed transformer winding structure. At the same time, the wrinkling treatment of the outer insulation layer of the coil group during the adjustment process reduces the possibility of insulation layer damage.

[0018] 2. This invention is based on the principle of determining the center of a circle by three points. The winding end is adjusted by a central drive shaft, a swing drive shaft and a fixed drive shaft. The basic shape retention effect required in actual use is achieved by multiple sets of dual-mode drive mechanisms.

[0019] 3. In this invention, the position of the extension shaft is adjusted by rotating the worm gear adjustment assembly, thus avoiding migration and slippage during the adjustment process, which would lead to undesirable motion interference.

[0020] 4. This invention achieves the adaptation of the arc length between the two adjustable drive components by operating the motor drive gear seat to drive the bearing cylinder to rotate. At the same time, it ensures that the bearing cylinder rotates rather than slides during the winding process, thus maintaining the stability of the winding.

[0021] 5. The present invention achieves the necessary rigid connection between the mounting bearing cylinder and the hooking groove through the sliding cooperation of the hooking protrusion and the hooking groove, thereby preventing the mounting bearing cylinder from falling off.

[0022] 6. The present invention uses an unfolded inner support mechanism to bring the support shaft cylinder closer to the inner wall, and at the same time, uses a spring-loaded elastic support foot to support the support shaft cylinder under the basic shape constraints of the dual-mode drive mechanism, thereby maintaining the stability of the support shaft cylinder during rotation.

[0023] 7. This invention achieves the desired winding shape by adjusting the supporting bearing cylinder to a cylindrical state for basic or cylindrical winding of the wire harness, and by adjusting the supporting bearing cylinder to a near-elliptical state for winding of the desired long cylindrical wire harness. It also achieves the desired winding shape in two different ways. Furthermore, it can batch prepare general cylindrical coils through pre-processing, and then adjust the cylindrical coils to the desired near-elliptical state through secondary processing, effectively improving the functionality of the winding device. Attached Figure Description

[0024] Figure 1 This is a front-view structural schematic diagram of the oil-immersed transformer winding structure in this invention;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the coil group insulation layer of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the winding device in this invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the internal support mechanism of the present invention;

[0028] Figure 5 For the present invention Figure 4 A magnified view of the structure at point A in the middle;

[0029] Figure 6 This is a three-dimensional structural diagram of the dual-mode drive mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the installation structure of the dual-mode drive mechanism of the present invention;

[0031] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point B in the middle;

[0032] Figure 9 This is a schematic diagram of the structure of the present invention, which is equipped with a bearing shaft cylinder that is adjusted to a cylindrical state;

[0033] Figure 10 This is a schematic diagram of the structure of the bearing shaft cylinder adjusted to a near-elliptical state in this invention.

[0034] Explanation of the labels in the diagram:

[0035] 101. Lower clamp; 102. Iron core; 103. Upper clamp; 104. Coil assembly; 2. Main support seat; 3. Slide rail; 4. Internal support mechanism; 5. Drive block; 6. Dual-mode drive mechanism; 13. Cylinder; 7. Connecting frame; 8. Central drive shaft; 801. Drive motor A; 9. Swing drive shaft; 901. Drive motor B; 10. Fixed drive shaft; 902. Worm gear adjustment assembly; 903. Extension shaft; 11. Adjustable drive assembly; 1101. Operating adjustment motor; 1102. Operating rotating seat; 1104. Gear seat; 1105. Connecting shaft; 1106. Extrusion groove; 1107. Rotating gear; 1108. Extrusion protrusion; 12. Mounting bearing shaft cylinder; 1201. Hook groove; 401. Elastic support foot. Detailed Implementation

[0036] like Figure 1-2 As shown, the present invention relates to an oil-immersed transformer winding structure, including a lower clamp 101; an upper clamp 103 is disposed above the lower clamp 101 via an iron core 102; wherein the iron core 102 is a detachable structure, and a plurality of coil groups 104 are disposed on the iron core 102; the coil group 104 includes a low-voltage wire group and a high-voltage wire group; wherein an insulating layer is disposed on the outside of the low-voltage wire group and the high-voltage wire group; wherein the insulating layer has a pleated structure to adapt to bending deformation. This invention folds the outer insulation layer of the coil group 104, enabling the oil-immersed transformer winding to effectively adapt to the tension and tensile force of the bending arc during the winding process when it is bent onto the iron core 102. This method facilitates shape adjustment of the single coil group 104 to accommodate coil groups 104 with different structural shapes. Essentially, this method involves pre-processing the coil group 104 to a certain size specification, then adjusting it according to the actual specifications of the required oil-immersed transformer winding structure. Simultaneously, the folding of the outer insulation layer during adjustment reduces the likelihood of insulation layer damage.

[0037] like Figure 3-9 As shown, the present invention relates to a winding device, comprising a main support base 2; slide rails 3 are provided on both sides of the main support base 2; an inner support mechanism 4 is provided through the middle of the main support base 2; drive blocks 5 are provided on the upper and lower sides of the slide rails 3 respectively; a dual-mode drive mechanism 6 is provided on the drive blocks 5; wherein, the dual-mode drive mechanism 6 includes a connecting frame 7; the connecting frame 7 is arranged on the drive blocks 5; a central drive shaft 8, an oscillation drive shaft 9 and a fixed drive shaft 10 are provided on the connecting frame 7.

[0038] In an embodiment of the present invention, a drive motor A801 ​​is mounted on the input end of the central drive shaft 8 via a mounting base; a synchronous pulley A is mounted on the end of the yaw drive shaft 9; a drive motor B901 is mounted on the connecting frame 7 via a mounting base; a synchronous pulley B is mounted on the output end of the drive motor B901; and the synchronous pulley B is connected to the synchronous pulley A via a synchronous belt; the fixed drive shaft 10 is rotatably arranged on the connecting frame 7 via a drive motor C. The present invention is based on the principle of determining the center of a circle using three points. The adjustment of the winding end is achieved through the central drive shaft 8, the yaw drive shaft 9, and the fixed drive shaft 10, and the basic shape retention effect required for actual use is achieved through multiple sets of dual-mode drive mechanisms 6.

[0039] In an embodiment of the present invention, a worm gear adjustment assembly 902 is provided on the side of the yaw drive shaft 9, and an extension shaft 903 is provided at the output end of the worm gear adjustment assembly 902; an adjustable drive assembly 11 is provided at the ends of the center drive shaft 8, the extension shaft 903, and the fixed drive shaft 10; wherein, an operating groove is provided at the end of the adjustable drive assembly 11; wherein, the internal gaps of several operating grooves constitute an operating cavity; wherein, the gap between two operating cavities constitutes a mounting bearing cylinder 12. In the present invention, the position of the extension shaft 903 is adjusted by rotating the worm gear adjustment assembly 902, thus avoiding migration and slippage during the adjustment process, which could lead to undesirable motion interference.

[0040] In an embodiment of the present invention, the adjustable drive assembly 11 includes an operation adjustment motor 1101 respectively arranged on the ends of the central drive shaft 8, the extension shaft 903, and the fixed drive shaft 10; an operation rotating seat 1102 is provided at the end of the operation adjustment motor 1101; an operation groove is provided at the end of the operation rotating seat 1102; hemispherical hook protrusions are provided on both sides of the operation cavity; a gear seat 1104 is provided at the output end of the operation adjustment motor 1101; a connecting shaft 1105 is provided at the end of the gear seat 1104; a spiral extrusion groove 1106 is provided on the connecting shaft 1105; a rotating gear 1107 is movably arranged on the connecting shaft 1105; an extrusion protrusion 1108 is provided on the inner wall of the rotating gear 1107; wherein, the gear seat 1104 and the rotating gear 1107 are elastically connected by a spring. The present invention achieves the adaptation of the arc length between the two adjustable drive components 11 by operating the adjustment motor 1101 to drive the gear seat 1104 to drive the bearing cylinder 12 to rotate. At the same time, it ensures that the bearing cylinder 12 rotates rather than slides during the winding process, thus maintaining the stability of the winding.

[0041] In an embodiment of the present invention, the supporting bearing cylinder 12 is provided with connecting teeth on both sides that mesh with the output end of the adjustable drive assembly 11; and the end of the supporting bearing cylinder 12 is provided with a hook groove 1201 that slides with the hook protrusion. The present invention achieves the necessary rigid connection between the supporting bearing cylinder 12 and the hook groove 1201 through the sliding engagement of the hook protrusion and the hook groove 1201, thereby preventing the supporting bearing cylinder 12 from falling off.

[0042] In an embodiment of the present invention, the inner support mechanism 4 is rotatably connected to the main support base 2, and several unfolded ends of the inner support mechanism 4 are respectively provided with several elastic support legs 401 by springs. The present invention causes the unfolded inner support mechanism 4 to approach the inner wall of the mounting bearing cylinder 12, and at the same time, with the elastic support legs 401 protruding by springs, it supports the mounting bearing cylinder 12 under the basic shape constraint of the dual-mode drive mechanism 6, and maintains the stability of the mounting bearing cylinder 12 during rotation.

[0043] In an embodiment of the present invention, the dual-mode drive mechanism 6 constitutes a lifting and adjusting mechanism through the drive block 5, the slide rail 3, and the cylinder 13. The two vertically arranged dual-mode drive mechanisms 6 move relative to each other. The two sets of vertically arranged dual-mode drive mechanisms 6 move closer to each other, and the drive motor B901 rotates to drive the extension shaft 903 to rotate and adjust, thereby adjusting the mounting bearing cylinder 12 to a cylindrical state. Conversely, the two sets of vertically arranged dual-mode drive mechanisms 6 move further apart, and the drive motor B901 rotates to drive the extension shaft 903 to rotate and adjust, thereby adjusting the mounting bearing cylinder 12 to a near-elliptical state. The present invention achieves the desired winding shape through two different methods. It also allows for the batch preparation of general-purpose cylindrical coils through pre-processing, followed by secondary processing to adjust the cylindrical coils to the desired near-elliptical state, effectively improving the functionality of the winding device.

[0044] Working principle: This embodiment provides an oil-immersed transformer winding structure and winding device. Usage steps:

[0045] S100, Drive processing: The external tire-like airbag rotation mechanism is brought into contact with the bearing cylinder 12;

[0046] S200, Adjustment Process:

[0047] S201, Cylindrical Adjustment Process: Two sets of cylinders 13 drive the dual-mode drive mechanism 6 to move closer together, while simultaneously the drive motor B901 rotates and drives the yaw drive shaft 9 to rotate, and the two adjustable drive components 11 on both sides move synchronously, causing the length of the three adjustable drive components 11 in the forming path to increase; forming as... Figure 9 The adjustment shown causes the entire bearing shaft cylinder 12 to be in the shape of a round shaft.

[0048] S202, Elliptical Adjustment Process: Two sets of cylinders 13 drive the dual-mode drive mechanism 6 to move relatively away from the far east, and the drive motor B901 rotates to drive the yaw drive shaft 9 to rotate, while the two adjustable drive components 11 on both sides move synchronously, causing the length of the three adjustable drive components 11 to decrease, forming an elliptical shape. Figure 10 The adjustment shown causes the bearing cylinder 12 to be roughly elliptical in shape.

[0049] S300, Winding Processing: The bearing cylinder 12 is rotated by friction through an airbag rotation mechanism, and the bearing cylinder 12 is driven to rotate by the gear seat 1104 driven by the operation adjustment motor 1101, thus forming the winding operation.

[0050] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A winding device, characterized in that, Includes a main support base (2); slide rails (3) are provided on both sides of the main support base (2); an inner support mechanism (4) is provided through the middle of the main support base (2); drive blocks (5) are provided on the upper and lower sides of the slide rails (3); a dual-mode drive mechanism (6) is provided on the drive blocks (5); The dual-mode drive mechanism (6) includes a connecting frame (7); the connecting frame (7) is arranged on the drive block (5); the connecting frame (7) is provided with a central drive shaft (8), a yaw drive shaft (9) and a fixed drive shaft (10). The connecting frame (7) is equipped with a drive motor B (901) via a mounting base. The yaw drive shaft (9) is provided with a worm gear adjustment assembly (902) on its side, and an extension shaft (903) is provided at the output end of the worm gear adjustment assembly (902). The central drive shaft (8), the extension shaft (903) and the fixed drive shaft (10) are provided with adjustable drive components (11); wherein, the adjustable drive components (11) are provided with operating grooves at their ends. Multiple operating slots enclose an operating cavity; The gap between the two operating chambers forms a support bearing cylinder (12). The dual-mode drive mechanism (6) forms a lifting and adjusting mechanism through the drive block (5), slide rail (3) and cylinder (13), and the two dual-mode drive mechanisms (6) arranged vertically are in relative motion; Two sets of dual-mode drive mechanisms (6) arranged vertically move closer to each other. The drive motor B (901) rotates and drives the extension shaft (903) to rotate and adjust, so that the bearing cylinder (12) is adjusted to a cylindrical state. Two sets of dual-mode drive mechanisms (6) arranged vertically move away from each other. The drive motor B (901) rotates and drives the extension shaft (903) to rotate and adjust, so that the bearing cylinder (12) is adjusted to an elliptical state.

2. The winding device according to claim 1, characterized in that, The input end of the central drive shaft (8) is equipped with a drive motor A (801) via a mounting base. The yaw drive shaft (9) is provided with a synchronous pulley A at its end; the drive motor B (901) is provided with a synchronous pulley B at its output end; the synchronous pulley B is connected to the synchronous pulley A via a synchronous belt. The fixed drive shaft (10) is rotated on the connecting frame (7) by the drive motor C.

3. A winding device according to claim 2, characterized in that, The adjustable drive assembly (11) includes an operating adjustment motor (1101) respectively arranged on the ends of the central drive shaft (8), the extension shaft (903), and the fixed drive shaft (10); an operating rotating seat (1102) is provided at the end of the operating adjustment motor (1101); an operating groove is provided at the end of the operating rotating seat (1102); hemispherical hook protrusions are provided on both sides of the operating cavity; a gear seat (1104) is provided at the output end of the operating adjustment motor (1101); a connecting shaft (1105) is provided at the end of the gear seat (1104); a spiral extrusion groove (1106) is provided on the connecting shaft (1105); a rotating gear (1107) is movably arranged on the connecting shaft (1105); and an extrusion protrusion (1108) is provided on the inner wall of the rotating gear (1107). The gear seat (1104) and the rotating gear (1107) are elastically connected by a spring.

4. A winding device according to claim 3, characterized in that, The bearing cylinder (12) is provided with connecting teeth on both sides that mesh with the output end of the adjustable drive assembly (11); the bearing cylinder (12) is provided with a hook groove (1201) at the end that slides with the hook protrusion.

5. A winding device according to claim 4, characterized in that, The inner support mechanism (4) is rotatably connected to the main support base (2), and several unfolded ends of the inner support mechanism (4) are respectively provided with several elastic legs (401) by springs.

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