Auxiliary tool for high-voltage winding machine of dry-type transformer and working method thereof

Abstract

An auxiliary tool for a high-voltage winding machine of a dry-type transformer and a working method thereof, the tool comprising a fiberglass tape damper and a spring feeder, the spring feeder being inclined at an angle of 20° with respect to the fiberglass tape damper; the fiberglass tape damper comprising a bolt, the bolt passing through a first flat washer, a disc damper, a first nut, a second flat washer, a first fixed disc, a second nut, a fiberglass tape roll, a third nut, and a second fixed disc; the spring feeder comprising an eye nut, the eye nut being provided with a type-1 hexagonal nut at one end close to an eye, the eye nut being provided with a hexagonal head bolt at an end away from the eye, a spring being arranged on the eye nut between the type-1 hexagonal nut and the hexagonal head bolt; the working method being that the disc core transmits resistance to the bolt through the first nut to constantly output tension, the auxiliary tool is used to replace auxiliary work, the difficulty of high-voltage coil winding operation is reduced, power driving is not needed, the tool is not limited by the environment during use, and the tool has the characteristics of simple structure and convenient operation.

Description

Technical Field

[0001] This invention belongs to the field of dry-type transformer technology, and specifically relates to an auxiliary tooling for a high-voltage winding machine of a dry-type transformer and its working method. Background Technology

[0002] During the winding of fiberglass tape in dry-type iron-core transformers, auxiliary tooling mainly serves to fix and tighten the wire segments. When the coil is placed in the air duct, multiple air duct rods are placed on the coil to fix them at the top and bottom to prevent them from falling off. The upper end of the coil is connected to the spool behind it by a wire, which can press down the upper end of the air duct rods. The lower end of the coil is pressed down with fiberglass tape. At this time, an auxiliary worker needs to apply a certain tension to tighten the air duct rods. As the spool rotates, the air duct rods are placed on the coil one by one, and the upper and lower ends of the air duct rods are fixed by the wire and fiberglass tape. However, this method has the following disadvantages: 1. An auxiliary worker is needed to assist in winding and binding the coil with fiberglass tape during the coil winding process; 2. The tension of the fiberglass tape tightened by the auxiliary worker cannot be effectively controlled.

[0003] Chinese patent application 202010961950.6 discloses a winding and unwinding device for transformer coils, comprising: a base assembly, a winding and unwinding assembly, a wire tension adjustment assembly, and a control assembly. The winding and unwinding assembly is mounted on the base assembly, and the wire tension adjustment assembly is connected to the winding and unwinding assembly, adjusting the wire tension through the winding and unwinding assembly. The control assembly is electrically connected to both the winding and unwinding assembly and the wire tension adjustment assembly, controlling the winding and unwinding of the wire. By controlling the tension during unwinding through the wire tension adjustment assembly, the device overcomes the shortcomings of existing technologies that only adjust wire tension by adjusting the tightness of the brake pads, maintaining stable wire tension, achieving quantitative adjustment of wire tension, and improving the stability of the winding and unwinding device. However, because it uses a cylinder to achieve energy output, it requires circuit control and pneumatic output, resulting in a complex structure and limited applicability.

[0004] Chinese patent application 201210549738.4 discloses a CNC electromagnetic braking winding tensioning device for distribution transformers, comprising a controller, a tensioning mechanism for enameled round conductors, a tensioning mechanism for paper-insulated flat conductors, a guiding mechanism for enameled wires, a buffer mechanism for enameled wires, and a guide mechanism for outgoing wires to prevent twisting and scratching. This invention, a CNC electromagnetic braking winding tensioning device for distribution transformers, adopts an integrated high- and low-voltage design, utilizing electromagnetic force for braking. The braking force can be remotely controlled via a CNC system. Using electromagnetic braking to achieve conductor tensioning not only meets the requirements for various wire gauges of enameled and paper-insulated conductors, but also provides remote tension control, stable braking force, and conductor protection against damage, loosening, and twisting. It is easy to operate and safe to use, overcoming the shortcomings of pneumatic tensioning devices that are affected by air pressure sources and have unstable tensioning force on the conductors. This invention is applicable to products such as S11 and S13 oil-immersed distribution transformers, SH15 amorphous alloy distribution transformers, dry-type transformers, prefabricated substations, and combined transformers. However, since the torque output is achieved through electromagnetic principles, it has the disadvantage of limited applicability. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention aims to provide an auxiliary tooling and its working method for a dry-type transformer high-voltage winding machine. It utilizes a combination of fiberglass tape damper and spring energy feeder, and adopts a purely mechanical method to fix and tighten the wire segment during the winding process of fiberglass tape. It has the characteristics of simple structure and convenient operation.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] An auxiliary tooling for a dry-type transformer high-voltage winding machine includes a fiberglass tape damper and a spring energy feeder, wherein the spring energy feeder and the fiberglass tape damper are arranged at a 20° angle.

[0008] The fiberglass tape damper is mounted on the wire frame 16, and a horizontal column 17 is provided below the fiberglass tape damper on the wire frame 16. A spring energy feeder is configured on the horizontal column 17.

[0009] The fiberglass tape damper includes a bolt 1, which passes sequentially through a first flat washer 2, a disc damper 3, a first nut 4, a second flat washer 5, a first fixing disc 6, a second nut 7, a fiberglass tape roll 15, a third nut 14, and a second fixing disc 8.

[0010] The spring energy feeder includes a lifting eye nut 9, with a type 1 hexagonal nut 10 at one end of the lifting eye nut 9 near the lifting eye, a housing 11 on one side of the type 1 hexagonal nut, and a hexagonal head bolt 12 at the other end of the lifting eye nut 9 away from the lifting eye. A spring 13 is provided on the lifting eye nut between the type 1 hexagonal nut 10 and the hexagonal head bolt 12.

[0011] The aforementioned wire frame 16 is equipped with a spool 19.

[0012] A method for operating an auxiliary fixture for a dry-type transformer high-voltage winding machine involves fixing a first fixed plate 6, a second fixed plate 8, and a fiberglass tape roll 15 to the center of a disc damper 3. The first fixed plate 6 and the second fixed plate 8 clamp the fiberglass tape roll 15, allowing the fiberglass tape to be output from the disc damper 3. The fiberglass tape is then wound onto the coil 18 via a spring energy feeder. During winding, the disc damper 3's center transmits resistance to the bolt 1 via a first nut 4. A second flat washer 5 separates the disc damper 3 from the first fixed plate 6, and the bolt 1 and the second nut 7, which pass through the center of the disc, cooperate. The entire auxiliary fixture is arranged side-by-side with the bobbin 19. The output fiberglass tape and the wire output from the bobbin 19 are wound in parallel onto the coil 18 of the horizontal winding machine, thereby achieving constant tension output of the fiberglass tape through the disc damper 3 and the spring energy feeder, and fixing the air duct rod on the transformer onto the coil 18.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. An auxiliary tooling for a dry-type transformer high-voltage winding machine, which replaces auxiliary work and reduces the difficulty of high-voltage coil winding operation. It not only solves the problem of insufficient personnel and the personal safety problem when auxiliary workers apply tension with their bodies, but also greatly expands the scope of application due to its simple structure.

[0015] 2. An auxiliary tooling for a dry-type transformer high-voltage winding machine, comprising a fiberglass tape damper and a spring energy feeder. Since the bolt 1 passes sequentially through the first flat washer 2, the disc damper 3, the first nut 4, the second flat washer 5, the first fixed disc 6, the second nut 7, the fiberglass tape roll 15, the third nut 14, and the second fixed disc 8, the disc damper 8 transmits resistance to the bolt 1 through the first nut 4, which can maintain a constant output tension and solve the problem of large fluctuations in auxiliary tension. Furthermore, this invention does not require electric drive, is not limited by the environment, and can be used anytime and anywhere.

[0016] In summary, the present invention has the characteristics of simple structure and convenient operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the fiberglass tape damper of the present invention.

[0019] Figure 3 This is a schematic diagram of the spring power supply device of the present invention.

[0020] Figure 4 This is a diagram showing the usage state of the present invention.

[0021] The components are: 1. Bolt; 2. First flat washer; 3. Disc damper; 4. First nut; 5. Second flat washer; 6. First fixing disc; 7. Second nut; 8. Second fixing disc; 9. Eye nut; 10. Type 1 hexagonal nut; 11. Housing; 12. Hexagonal head bolt; 13. Spring; 14. Third nut; 15. Fiberglass tape roll; 16. Wire frame; 17. Crossbar; 18. Coil; 19. Spool. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Reference Figure 1 An auxiliary tooling for a dry-type transformer high-voltage winding machine includes a fiberglass tape damper and a spring energy feeder, wherein the spring energy feeder is inclined at 20° to the fiberglass tape damper.

[0025] The fiberglass tape damper is mounted on the wire frame 16, and a horizontal column 17 is provided below the fiberglass tape damper on the wire frame 16. A spring energy feeder is configured on the horizontal column 17.

[0026] Reference Figure 2 The fiberglass tape damper includes a bolt 1, which passes sequentially through a first flat washer 2, a disc damper 3, a first nut 4, a second flat washer 5, a first fixing disc 6, a second nut 7, a fiberglass tape roll 15, a third nut 14, and a second fixing disc 8.

[0027] Reference Figure 3 The spring energy feeder includes a lifting eye nut 9, a type 1 hexagonal nut 10 is provided at one end of the lifting eye nut 9 near the lifting eye, a housing 11 is provided on one side of the type 1 hexagonal nut 10, a hexagonal head bolt 12 is provided at the end of the lifting eye nut 9 away from the lifting eye, and a spring 13 is provided on the lifting eye nut 9 between the type 1 hexagonal nut 10 and the hexagonal head bolt 12.

[0028] Bolt 1 is an M8×50 bolt.

[0029] The first flat pad 2 and the second flat pad 5 are M10 flat pads.

[0030] The first nut 4, the second nut 7, and the third nut 14 are M8 nuts.

[0031] A fiberglass tape roll is fixed between the first fixing plate 6 and the second fixing plate 8.

[0032] The eye nut 9 is an M8 eye nut.

[0033] The type 1 hexagonal nut 10 is an M81 type hexagonal nut.

[0034] The hexagonal head bolt 11 is an M8×140 hexagonal head bolt.

[0035] Reference Figure 4 The auxiliary tooling is fixed on the wire frame 16 at the rear of the horizontal winding machine, which is the position where the auxiliary tooling stands. To reduce the friction of the screw, the spring energy feeder needs to be tilted 20° during installation according to the tension vector direction. The wire frame 16 is equipped with a bobbin 19.

[0036] A method for operating an auxiliary fixture for a dry-type transformer high-voltage winding machine involves fixing a first fixed plate 6, a second fixed plate 8, and a fiberglass tape roll 15 to the center of a disc damper 3. The first fixed plate 6 and the second fixed plate 8 clamp the fiberglass tape roll 15, allowing the fiberglass tape to be output from the disc damper 3. The fiberglass tape is then wound onto the coil 18 via a spring energy feeder. During winding, the disc damper 3's center transmits resistance to the bolt 1 via a first nut 4. A second flat washer 5 separates the disc damper 3 from the first fixed plate 6, and the bolt 1 and the second nut 7, which pass through the center of the disc, cooperate. The entire auxiliary fixture is arranged side-by-side with the bobbin 19. The output fiberglass tape and the wire output from the bobbin 19 are wound in parallel onto the coil 18 of the horizontal winding machine, thereby achieving constant tension output of the fiberglass tape through the disc damper 3 and the spring energy feeder, and fixing the air duct rod on the transformer onto the coil 18.

Claims

1. A working method of an auxiliary tool of a high-voltage winding machine for dry-type transformers, characterized in that, The auxiliary tooling for the high-voltage winding machine of the dry-type transformer includes a fiberglass tape damper and a spring energy feeder. The spring energy feeder is inclined at 20° to the fiberglass tape damper. The fiberglass tape damper is set on the wire frame (16). A horizontal column (17) is set below the fiberglass tape damper on the wire frame (16). The spring energy feeder is arranged on the horizontal column (17). The fiberglass tape damper includes a bolt. The bolt (1) passes through the first flat washer (2), the disc damper (3), the first nut (4), the second flat washer (5), the first fixed disc (6), and the second nut (7) in sequence. Fiberglass tape roll (15), third nut (14), and second fixed plate (8); the spring power supply includes a lifting eye nut (9), a type 1 hexagonal nut (10) is provided at one end of the lifting eye nut (9) near the lifting eye, a housing (11) is provided on one side of the type 1 hexagonal nut (10), a hexagonal head bolt (12) is provided at the end of the lifting eye nut (9) away from the lifting eye, and a spring (13) is provided on the lifting eye nut (9) between the type 1 hexagonal nut (10) and the hexagonal head bolt (12); a bobbin (19) is configured on the wire frame (16); The working method is as follows: the first fixed plate (6), the second fixed plate (8), and the fiberglass tape roll (15) are fixed on the center of the disc damper (3). The first fixed plate (6) and the second fixed plate (8) clamp the fiberglass tape roll (15), and the fiberglass tape is output from the disc damper (3). Then the fiberglass tape is wound onto the coil (18) through the spring energy feeder. During winding, the center of the disc damper (3) transmits the resistance to the bolt (1) through the first nut (4), and the second... The flat pad (5) separates the disc damper (3) and the first fixed plate (6), and is engaged by the bolt (1) passing through the center of the disc and the second nut (7); the entire set of auxiliary tools is distributed side by side with the bobbin (19), and the output fiberglass tape and the wire output from the bobbin (19) are wound in parallel on the coil (18) of the horizontal winding machine, so that the fiberglass tape achieves constant tension output through the disc damper (3) and the spring energy feeder, and the air channel bar on the transformer is wound and fixed on the coil (18).

Images