A large-capacity dry-type reactor coil vertical winding tool
By designing a tooling structure that includes a receiving tray, busbar, support ring, and steel pipe, the problems of poor inner diameter accuracy and lifting damage during the winding of large-capacity dry reactor coils were solved, achieving improvements in high precision, uniform stress distribution, and thermal cycling drying efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TBEA SHENYANG TRANSFORMER GRP CO LTD
- Filing Date
- 2021-12-29
- Publication Date
- 2026-06-19
AI Technical Summary
The inner diameter side of the coil of a large-capacity dry reactor has poor precision during winding and is easily damaged during hoisting, resulting in uneven mechanical distribution during hoisting of the finished product.
The tooling structure consists of a receiving tray, a lower manifold, an upper manifold, a central screw, a hanging plate, a support ring, and an outer steel pipe. The axial dimension is adjusted by a screw sleeve and a hollow jack, the support ring is fixed by a connecting arm and bolts, the positioning screw improves accuracy, and air outlet holes and protrusions are set on the receiving tray to uniformly transmit hot airflow.
It improves the accuracy of the inner diameter side of the coil winding, avoids damage during lifting, ensures uniform force distribution, enhances the efficiency of thermal cycling and drying, and improves manufacturing accuracy and usage efficiency.
Smart Images
Figure CN116417239B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of dry-type reactor manufacturing, specifically a tooling for vertical winding of large-capacity dry-type reactor coils. Background Technology
[0002] Dry-type reactor coils are typically wound using a multi-layer cylindrical structure, with oil gap supports separating each layer to ensure electrical performance parameters. Large-capacity dry-type reactors often have more than 20 coil layers, resulting in large radial dimensions and an overall weight exceeding 80 tons. Therefore, the inner diameter of the coil requires strict precision during winding. Furthermore, the uneven distribution of mechanical forces during hoisting makes the coil itself susceptible to damage from the hoisting structure. Summary of the Invention
[0003] To address the problem of poor inner diameter accuracy in the winding of existing large-capacity dry-type reactors, the present invention aims to provide a tooling for vertical winding of large-capacity dry-type reactor coils.
[0004] The objective of this invention is achieved through the following technical solution:
[0005] A tooling for vertical winding of a large-capacity dry-type reactor coil includes a receiving plate, a lower busbar, an upper busbar, a central screw, a hanging plate, a bottom support ring, a top support ring, several middle support rings, several support ring clamping frames, and several outer steel pipes. The lower busbar includes several connecting arms A evenly arranged circumferentially, and the upper busbar includes several connecting arms B evenly arranged circumferentially.
[0006] The hanging plate is fixed to the top support ring. The hanging plate is provided with several lifting lugs. The inner side of the bottom support ring and the inner side of each of the middle support rings are fixed with support ring support frames. The lower end of the central screw is connected to the receiving plate. The upper end of the central screw passes through each of the support ring support frames and the hanging plate in sequence, and is provided with a nut A for pressing the hanging plate from above. A set of screw sleeves and hollow jacks that serve to support and adjust the axial dimensions are respectively fitted on the central screw between two adjacent support ring support frames and on the central screw between the hanging plate and the adjacent support ring support frame.
[0007] Each of the connecting arms A is evenly installed on the adhesive receiving plate along the circumference. Each of the support ring clamping frames is clamped to the bottom support ring, the top support ring, and each of the middle support rings. Each of the connecting arms B is installed on the adjacent support ring clamping frames. Each of the peripheral steel pipes is set in the gap between each two adjacent support ring clamping frames and abuts against the outer circumferential surfaces of the bottom support ring, the top support ring, and each of the middle support rings to form a cylindrical whole. The peripheral steel pipes are in extrusive contact with the adjacent peripheral steel pipes or the support ring clamping frames. The outer circumference of the cylindrical whole is tightly bound with shrink tape.
[0008] The number of connecting arms A is the same as the number of connecting arms B, and their positions correspond one-to-one.
[0009] The number of support ring clips is the same as the number of connecting arms A and their positions correspond to each other. The lower part of each support ring clip is provided with a insertion slot A through which the corresponding connecting arm A passes.
[0010] The number of support ring snap-fit brackets is the same as the number of connecting arms B and their positions correspond to each other. The upper part of each support ring snap-fit bracket is provided with a insertion slot B through which the corresponding connecting arm B passes. Each connecting arm B passes through the insertion slot B of the corresponding support ring snap-fit bracket and is connected to the corresponding support ring snap-fit bracket by bolts.
[0011] A wire drawing connector is fitted onto the central screw that extends from above the hanging plate. The upper end of the wire drawing connector abuts against the nut A. Each of the connecting arms B is provided with a wire drawing end, and the other end of each wire drawing end is connected to the wire drawing connector.
[0012] Each of the connecting arms B is fixedly connected to the same reinforcing ring.
[0013] A plurality of positioning screws are evenly arranged on the outer periphery of the central screw. The lower end of each positioning screw is connected to the receiving plate, and the upper end of each positioning screw passes through the hanging plate and is provided with a nut B for pressing the hanging plate from above.
[0014] The receiving tray has several sets of air delivery holes evenly arranged circumferentially.
[0015] An air supply protrusion is fixedly connected to the receiving plate at the position corresponding to each group of air supply holes. The air supply protrusion covers the air supply holes of the corresponding group. An air supply channel communicating with the air supply holes of the corresponding group is opened inside the air supply protrusion. Several air guide holes communicating with the air supply channel are opened on the outer peripheral surface of the air supply protrusion.
[0016] The top of the gas delivery protrusion is provided with an inclined baffle.
[0017] The advantages and positive effects of this invention are as follows:
[0018] This invention can solve the problem of poor inner diameter accuracy in the winding of large-capacity dry reactors, improve the manufacturing precision of the product, avoid the lifting and transportation damage caused by the excessive weight of the dry reactor coil, and improve the thermal cycling drying efficiency of the coil. It is simple, practical and highly efficient. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0020] Figure 2 This is one of the structural diagrams of the present invention after the adhesive tray, lower busbar and upper busbar have been removed;
[0021] Figure 3 This is a second schematic diagram of the structure of the present invention after the adhesive tray, lower busbar and upper busbar have been removed;
[0022] Figure 4 This is a schematic diagram of the top surface structure of the adhesive receiving tray of the present invention;
[0023] Figure 5 This is a schematic diagram of the bottom structure of the adhesive receiving tray of the present invention.
[0024] In the diagram: 1 is the glue receiving plate, 101 is the air supply hole, 2 is the central screw, 3 is the lifting plate, 4 is the bottom support ring, 5 is the top support ring, 6 is the middle support ring, 7 is the support ring clamping frame, 8 is the outer steel pipe, 9 is the connecting arm A, 10 is the connecting arm B, 11 is the lifting lug, 12 is the support ring support frame, 13 is the screw sleeve, 14 is the hollow jack, 15 is the wire drawing connecting seat, 16 is the wire drawing, 17 is the reinforcing ring, 18 is the positioning screw, 19 is the air supply protrusion, and 20 is the bracket. Detailed Implementation
[0025] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.
[0026] A tooling for vertical winding of a large-capacity dry-type reactor coil, such as Figure 1-3 As shown, this embodiment includes a receiving tray 1, a lower busbar, an upper busbar, a central screw 2, a hanging plate 3, a bottom support ring 4, a top support ring 5, several middle support rings 6, several support ring clamping frames 7, and several outer steel pipes 8. The lower busbar includes several connecting arms A 9 evenly arranged circumferentially, and the upper busbar includes several connecting arms B 10 evenly arranged circumferentially. In this embodiment, the bottom support ring 4, the top support ring 5, and each middle support ring 6 are steel rings, and the outer steel pipes 8 are rectangular steel pipes.
[0027] In this embodiment, the hanging plate 3 is fixed to the top support ring 5. The hanging plate 3 is provided with several lifting lugs 11 for connecting the lifting device. The inner side of the bottom support ring 4 and the inner side of each middle support ring 6 are fixed with support ring support frames 12. The lower end of the central screw 2 is connected to the rubber receiving plate 1. The upper end of the central screw 2 passes through each support ring support frame 12 and the hanging plate 3 in sequence, and is provided with a nut A for pressing the hanging plate 3 from above. A set of screw sleeves 13 and hollow jacks 14 are respectively fitted on the central screw 2 between two adjacent support ring support frames 12 and on the central screw 2 between the hanging plate 3 and the adjacent support ring support frame 12, which serve to support and adjust the axial dimension. The screw sleeve 13 and the hollow jack 14 are designed to facilitate the support of the support ring support frame 12 and the hanging plate 3, and to adjust the dimensions between them, thereby adjusting the overall axial dimensions. This allows the bottom support ring 4, the top support ring 5, and each middle support ring 6 to be accurately and stably engaged with the support ring locking frame 7. In this embodiment, the hollow jack 14 is a commercially available product.
[0028] In this embodiment, each connecting arm A9 is evenly installed on the adhesive receiving plate 1 along the circumference. The adhesive receiving plate 1 is provided with a connecting arm A connecting seat for connecting the connecting arm A9 and is connected by bolts. Each support ring clamping frame 7 has a support ring clamping groove on its inner side and clamps with the bottom support ring 4, the top support ring 5 and each middle support ring 6 respectively. Each connecting arm B10 is installed on the adjacent support ring clamping frame 7. Each outer steel pipe 8 is set in the gap between each two adjacent support ring clamping frames 7 and abuts against the outer circumferential surface of the bottom support ring 4, the top support ring 5 and each middle support ring 6 to form a cylindrical whole. The outer steel pipe 8 is in extrusion contact with the adjacent outer steel pipe 8 or support ring clamping frame 7. The outer circumference of the cylindrical whole is tightly bound with shrink tape.
[0029] Specifically, such as Figure 1 As shown, in this embodiment, the number of connecting arms A 9 is the same as the number of connecting arms B 10, and their positions correspond one-to-one. The number of support ring retaining brackets 7 is the same as the number of connecting arms A 9, and their positions correspond. The lower part of each support ring retaining bracket 7 is provided with a insertion slot A through which the corresponding connecting arm A 9 passes. Each connecting arm A 9 presses down on the bottom support ring 4. The number of support ring retaining brackets 7 is the same as the number of connecting arms B 10, and their positions correspond. The upper part of each support ring retaining bracket 7 is provided with a insertion slot B through which the corresponding connecting arm B 10 passes. Each connecting arm B 10 passes through the insertion slot B of the corresponding support ring retaining bracket 7 and is connected to the corresponding support ring retaining bracket 7 by bolts.
[0030] Specifically, such as Figure 1As shown, in this embodiment, a wire-drawing connector 15 is fitted onto the central screw 2 extending from above the hanging plate 3. The upper end of the wire-drawing connector 15 abuts against the nut A. Each connecting arm B 10 is provided with one end of a wire 16, and the other end of each wire 16 is connected to the wire-drawing connector 15. The wire-drawing connector 15 is uniformly provided with wire-drawing connection holes for connecting the wires 16 along its circumference. In this embodiment, the wires 16 are made of glass wire. By using obliquely connected wires 16 and finely adjusting the tension of the wires 16, the sagging of each connecting arm B 10 of the upper busbar can be prevented.
[0031] Specifically, such as Figure 1 As shown, in this embodiment, each connecting arm B 10 is fixedly connected to the same reinforcing ring 17, which strengthens the connecting arm B 10.
[0032] Specifically, such as Figure 2 and Figure 3 As shown, in this embodiment, a plurality of positioning screws 18 are evenly arranged on the outer periphery of the central screw 2. The lower end of each positioning screw 18 is connected to the receiving plate 1, and the upper end of each positioning screw 18 passes through the hanging plate 3 and is provided with a nut B for pressing the hanging plate 3 from above. The cooperation between the positioning screws 18 and the nuts B facilitates the assembly and connection of the whole, improves the overall accuracy, and makes the overall structure stable. Each positioning screw 18 is also provided with a bracket 20 for supporting each connecting arm B10. By adjusting the position of the bracket 20, the positional accuracy of the busbar on the coil can be controlled, thereby controlling the vertical deviation of the upper and lower busbars.
[0033] Specifically, such as Figure 4 and Figure 5As shown, in this embodiment, the receiving plate 1 has several sets of air supply holes 101 evenly arranged circumferentially. Air supply protrusions 19 are fixed to positions corresponding to each set of air supply holes 101 on the receiving plate 1. The air supply protrusions 19 cover the corresponding sets of air supply holes 101. An air supply channel communicating with the corresponding set of air supply holes 101 is formed inside the air supply protrusion 19. Several air guide holes communicating with the air supply channels are formed on the outer circumferential surface of the air supply protrusion 19. The axial center line of each air guide hole is perpendicular to the axial center line of the coil. The top of the air supply protrusion 101 is provided with an inclined baffle, which gradually slopes downwards from the middle to the outside. In this embodiment, the top surface of the receiving plate 1 is also provided with a threaded rod connecting seat for connecting the central screw 2 and the positioning screw 18. The bottom surface of the receiving plate 1 is provided with reinforcing ribs and a receiving plate mounting seat for connecting with a vertical winding machine. When the coil and tooling are placed in the drying oven for thermal cycling drying, the airflow enters the air supply channel of the air supply protrusion 19 from the underside of the glue receiving tray 1 through the air inlet 101, and exits from the air guide hole to dry the coil. This allows the hot airflow to be evenly and quickly introduced into the coil's air channel. The glue receiving tray 1 can catch epoxy resin and other adhesives dripping from the coil during thermal cycling drying. The inclined baffle effectively prevents the adhesive from clogging the air guide hole, ensuring a reliable thermal cycling drying effect.
[0034] Working principle:
[0035] Through the coordinated arrangement of the receiving tray 1, lower busbar, upper busbar, central screw 2 with nut A, hanging plate 3, bottom support ring 4, top support ring 5, middle support ring 6, support ring clamping bracket 7, and outer steel pipe 8, the overall structure is easy to assemble and the assembly size is easy to adjust. The assembled tooling has high overall precision and can evenly distribute the force, avoiding damage to the coil body caused by the lifting structure. When the coil and tooling are placed in the drying oven for thermal circulation drying, the airflow enters the air supply channel of the air supply protrusion 19 from the lower side of the receiving tray 1 through the air supply hole 101, and exits from the air guide hole to dry the coil, which can make the hot airflow evenly and quickly enter the coil air channel. The receiving tray 1 can catch epoxy resin and other adhesives dripping from the coil during thermal circulation drying. The inclined baffle can effectively prevent the adhesive from clogging the air guide hole, ensuring a reliable thermal circulation drying effect.
Claims
1. A tooling for vertical winding of a large-capacity dry-type reactor coil, characterized in that: It includes a receiving tray (1), a lower busbar, an upper busbar, a central screw (2), a hanging plate (3), a bottom support ring (4), a top support ring (5), several middle support rings (6), several support ring clips (7), and several outer steel pipes (8). The lower busbar includes several connecting arms A (9) evenly arranged in the circumferential direction, and the upper busbar includes several connecting arms B (10) evenly arranged in the circumferential direction. The hanging plate (3) is fixed to the top support ring (5). The hanging plate (3) is provided with several lifting lugs (11). The inner side of the bottom support ring (4) and the inner side of each of the middle support rings (6) are fixed with support ring support frames (12). The lower end of the central screw (2) is connected to the glue receiving plate (1). The upper end of the central screw (2) passes through each of the support ring support frames (12) and the hanging plate (3) in sequence, and is provided with a nut A for pressing the hanging plate (3) from above. A set of screw sleeves (13) and hollow jacks (14) that play the role of supporting and adjusting the axial dimension are respectively fitted on the central screw (2) between two adjacent support ring support frames (12) and on the central screw (2) between the hanging plate (3) and the adjacent support ring support frame (12). Each of the connecting arms A (9) is evenly installed on the adhesive tray (1) along the circumference. Each of the support ring clips (7) is clipped to the bottom support ring (4), the top support ring (5) and each of the middle support rings (6). Each of the connecting arms B (10) is installed on the adjacent support ring clips (7). Each of the peripheral steel pipes (8) is set in the gap between each two adjacent support ring clips (7) and abuts against the outer circumferential surface of the bottom support ring (4), the top support ring (5) and each of the middle support rings (6) to form a cylindrical whole. The peripheral steel pipes (8) are squeezed and contacted with the adjacent peripheral steel pipes (8) or the support ring clips (7). The outer circumference of the cylindrical whole is tightly bound with shrink tape. The outer periphery of the central screw (2) is uniformly provided with a number of positioning screws (18). The lower end of each positioning screw (18) is connected to the adhesive receiving plate (1). The upper end of each positioning screw (18) passes through the hanging plate (3) and is provided with a nut B for pressing the hanging plate (3) from above. The adhesive receiving tray (1) is provided with several sets of air supply holes (101) evenly arranged in the circumferential direction. On the receiving plate (1), air supply protrusions (19) are fixedly connected to the positions corresponding to the air supply holes (101) of each group. The air supply protrusions (19) cover the air supply holes (101) of the corresponding group. An air supply channel communicating with the air supply holes (101) of the corresponding group is opened inside the air supply protrusions (19). Several air guide holes communicating with the air supply channels are opened on the outer peripheral surface of the air supply protrusions (19).
2. The tooling for vertical winding of a large-capacity dry-type reactor coil according to claim 1, characterized in that: The number of connecting arms A (9) is the same as the number of connecting arms B (10), and their positions correspond one-to-one.
3. The tooling for vertical winding of a large-capacity dry-type reactor coil according to claim 1, characterized in that: The number of the support ring snap brackets (7) is the same as the number of the connecting arms A (9) and their positions correspond to each other. The lower part of each support ring snap bracket (7) is provided with a plug groove A through which the corresponding connecting arm A (9) passes.
4. The tooling for vertical winding of a large-capacity dry-type reactor coil according to claim 1, characterized in that: The number of the support ring snap brackets (7) is the same as the number of the connecting arms B (10) and their positions are corresponding. The upper part of each support ring snap bracket (7) is provided with a plug groove B through which the corresponding connecting arm B (10) passes. Each connecting arm B (10) passes through the plug groove B of the corresponding support ring snap bracket (7) and is connected to the corresponding support ring snap bracket (7) by bolts.
5. The tooling for vertical winding of a large-capacity dry-type reactor coil according to claim 1, characterized in that: A wire drawing connector (15) is fitted onto the central screw (2) that extends from above the hanging plate (3). The upper end of the wire drawing connector (15) abuts against the nut A. Each of the connecting arms B (10) is provided with one end of a wire (16), and the other end of each wire (16) is connected to the wire drawing connector (15).
6. The tooling for vertical winding of a large-capacity dry-type reactor coil according to claim 1, characterized in that: Each of the connecting arms B (10) is fixedly connected to the same reinforcing ring (17).
7. The tooling for vertical winding of a large-capacity dry-type reactor coil according to claim 1, characterized in that: The top of the gas delivery protrusion (19) is provided with an inclined baffle.