A vertical winding device for vertically wound conductors of a dry-type high-voltage transformer coil.

Abstract

This invention discloses a wire-setting device for vertically winding conductors of dry-type high-voltage transformer coils, belonging to the field of coil winding. The device includes a main body and two wire-clamping devices mounted on the main body. The two clamping devices are used to clamp the flat conductor in the thickness and width directions, respectively. Each clamping device includes a slide rod mounted on the main body. One end of the slide rod has a fixed pulley frame, and the other end has a movable pulley frame that can slide along the slide rod. Each pulley frame has a set of pulleys for clamping the conductor, and the two sets of pulleys form an adjustable-spaced wire-clamping channel. Knowing the conductor specification, the width of the wire-clamping channel can be adjusted relative to the fixed pulley frame according to the thickness of the conductor being clamped. This achieves the effect of automatically adjusting the width of the wire-clamping channel according to the conductor thickness, making the wire-setting device applicable to conductors of various gauges and improving its versatility.

Description

Technical Field

[0001] This invention belongs to the field of coil winding, and in particular relates to a vertical winding device for vertical winding conductors of dry-type high-voltage coils. Background Technology

[0002] There are two winding methods for large-capacity dry-type transformer conductors: flat winding and vertical winding. Flat winding refers to the winding method in which the wide side of the conductor contacts the winding device. Vertical winding refers to the winding method in which the narrow side of the conductor contacts the winding device. Vertical winding can reduce the coil height and thus reduce the overall cost of the transformer. However, vertical winding requires the use of tooling to stand the conductor upright and then wind it onto the mold according to the mold shape. It is also necessary to ensure that the conductor is not tilted and affects the coil height.

[0003] The specifications of the clamping section in the current high-voltage coil winding take-up device for dry-type transformers are fixed, meaning that one take-up device can only take up one type of conductor and cannot be used for multiple conductor specifications. The main body of the existing take-up device is made of epoxy glass fiber, which is easily damaged during use and requires frequent replacement, leading to increased costs and reduced production efficiency. At the same time, the rollers that contact the conductor use two steel bearings stacked together, and the joint is prone to damaging the conductor insulation, which has a certain impact on the coil quality.

[0004] In summary, existing wire winding devices have the drawback of not being applicable to various wire specifications, resulting in poor versatility of the winding device. Summary of the Invention

[0005] The purpose of this invention is to provide a wire-standing device for vertically winding conductors of dry-type high-voltage coils, so as to solve the technical problem that existing wire-standing devices cannot be used with conductors of various specifications.

[0006] To achieve the above objectives, the technical solution of the present invention for a vertical winding device for a dry-type high-voltage coil is as follows:

[0007] A wire-standing device for vertically winding conductors of a dry-type high-voltage coil includes a main body and two wire-clamping devices arranged perpendicularly to each other on the main body. The two wire-clamping devices are used to clamp the flat conductor from the thickness direction and the width direction, respectively. The wire-clamping device includes two sets of pulley frames whose relative positions are adjustable along the clamping direction. Each pulley frame is provided with a set of wire-clamping pulleys for clamping the wire. The two sets of wire-clamping pulleys form a wire-clamping channel with an adjustable spacing.

[0008] The beneficial effects are: the two wire clamping devices ensure that the wire is limited in length, making it as vertical as possible, which facilitates vertical winding. The two sets of clamping pulleys on the two sets of pulley frames form a wire clamping channel. Knowing the wire specifications, the relative position of the two sets of pulley frames can be adjusted according to the thickness of the clamped wire to regulate the width of the clamping channel, ensuring that the surface of the wire passing through the vertical winding device is relatively flat, facilitating subsequent vertical winding.

[0009] As a further improvement, the pulley frame includes a fixed pulley frame and a movable pulley frame, which are fixedly mounted on the main body of the device. The movable pulley frame is vertically mounted on a cantilever parallel to the clamped wire on the main body of the device by adjusting bolts.

[0010] The beneficial effects are: the clamping channel formed by the two sets of clamping pulleys can be adjusted by a fixed pulley frame and a movable pulley frame. The position of the channel wall formed by the fixed pulley frame is fixed, which makes it more convenient to adjust the channel spacing for the two clamping devices at the same time. The fixed pulley frame is also easier to set up, reducing the difficulty of assembling the clamping devices.

[0011] As a further improvement, a locking nut for locking the current axial position of the adjusting bolt is also screwed between the adjusting bolt and the cantilever.

[0012] The beneficial effect is that the clamping channel of the clamping device can be stably maintained by tightening the nut, thus ensuring the clamping force of the wire clamping device.

[0013] As a further improvement, a slide bar for guiding the moving pulley frame is also included.

[0014] The beneficial effect is that the sliding rod guides the movement of the movable pulley frame, making it easier for the movable pulley frame to move.

[0015] As a further improvement, guide devices are provided at both ends of the main body of the device, which are used to guide the flat wire in the thickness direction and the width direction, respectively.

[0016] As a further improvement, a guide device is also included at one end of the main body of the device. The guide device includes a fixed shaft and an eccentric shaft. Both the fixed shaft and the eccentric shaft are equipped with guide pulleys for clamping the wire. The guide pulleys are fixed on the same side of the main body of the device. There is an eccentric distance between the axis of the eccentric shaft and the center of the pulley on the eccentric shaft. The guide pulley on the eccentric shaft rotates around the eccentric shaft with the eccentric distance as the radius of rotation and moves closer to the guide pulley on the fixed shaft. The two guide pulleys form a wire clamping channel with an adjustable spacing.

[0017] The beneficial effects are as follows: After the conductor enters the clamping channel, the guide pulley on the eccentric shaft automatically adjusts its position relative to the guide pulley on the fixed shaft according to the thickness of the clamped conductor. This means the conductor can widen the gap between the pulleys on the fixed shaft and the eccentric shaft. During this widening process, the pulley connected to the eccentric shaft slides outward relative to the pulley connected to the fixed shaft, increasing the clamping distance between the two pulleys. This achieves the effect that the width of the clamping channel can be automatically adjusted according to the conductor thickness, making this conductor clamping device suitable for various conductor gauges and improving its versatility. The guiding device primarily serves a guiding function and also assists in clamping the conductor.

[0018] As a further improvement, the guide device adjacent to the clamping device that clamps in the width direction clamps in the thickness direction; the guide device adjacent to the clamping device that clamps in the thickness direction clamps in the width direction.

[0019] The beneficial effects are: when the guide device clamps the width of the wire, the adjacent clamping device clamps the thickness of the wire. When the clamping device clamps the thickness of the wire, there is no restriction in the width direction of the wire, and the wire can easily slide out in the width direction. At this time, if the adjacent guide device clamps the width of the wire, it can restrict the wire from sliding out in the width direction, ensuring that the wire is stably clamped in the clamping channel.

[0020] As a further improvement, fasteners for fixing the position of the main body of the device are provided on both sides. The fasteners are lifting rings.

[0021] The beneficial effects are: the fixing component secures the main body of the device, ensuring that the riser device does not move with the conductor during the winding process. Lifting rings are commonly used fixing devices in transformer manufacturing; using them as fixing components facilitates the purchase or fabrication of materials for the riser device, reducing the cost of manufacturing the riser device.

[0022] As a further improvement, the pulleys are made of polytetrafluoroethylene (PTFE).

[0023] The beneficial effects are: the PVC rollers are wear-resistant and softer than the conductor material, so they will not damage the conductor and ensure the quality of the conductor after passing through the line-standing device. Attached Figure Description

[0024] Figure 1 A schematic diagram of the front view structure of a prior art vertical line device;

[0025] Figure 2 A schematic diagram of the left-side structure of a prior art vertical alignment device;

[0026] Figure 3 This is a schematic diagram of the main structure of the vertical winding device for the vertical winding conductor of the high-voltage coil in the dry transformer of the present invention.

[0027] Figure 4 This is a right-side structural schematic diagram of the vertical winding device for the vertical winding conductor of the high-voltage coil in the dry transformer of the present invention.

[0028] Figure 5 This is a rear view structural schematic diagram of the vertical winding device for the vertical winding conductor of the dry transformer high-voltage coil in this invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 01. Wire; 02. Clamping channel; 03. Clamping component; 04. Fixing component; 1. Main body of the device; 2. Moving pulley frame; 3. Fixed pulley frame; 4. Locking nut; 5. Adjusting bolt; 6. Lifting ring; 7. Fixed shaft; 8. Eccentric shaft; 9. Wire clamping pulley; 10. Guide pulley; 11. Slide rod; 12. Cantilever. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Example of a vertical winding device for vertically wound conductors of a dry-type high-voltage transformer:

[0033] Existing coil winding methods include two types: flat winding of conductor 01 and vertical winding of conductor 01. Vertical winding of conductor 01 can reduce the coil height, thus lowering the overall cost of the transformer. However, vertical winding requires the use of tooling to stand the conductor 01 upright and then wind it onto the mold according to the mold shape, ensuring that the conductor 01 is not tilted; that is, the conductor 01 must be flat and vertical, and the coil conductor 01 is flat. However, since the purchased conductor 01 is all laid flat and wound on the spool, during vertical winding, the conductor 01 needs to be bent from a wide side to a narrow side, causing the conductor 01 to easily twist. The coil wound from the twisted conductor 01 will be uneven and difficult to wind. Therefore, a device is needed to straighten the twisted conductor 01 before vertical winding, thereby solving the problems of winding difficulties and uneven coils associated with existing vertical winding methods.

[0034] An existing type of conductor winding device, such as Figure 1 , Figure 2As shown, the existing vertical winding device is connected and fixed to the wire feeding frame of the winding mold via the groove on the fixing component 04 on the main body of the device, facilitating the winding of the wire. The existing vertical winding device uses a clamping component 03, which typically consists of two sets of pulleys forming a wire clamping channel 02. This allows the wire 01 to pass through the clamping channel 02 and become upright, making it easier to wind the wire 01 vertically. However, the size of this clamping channel 02 is fixed. When winding wires 01 of different specifications, a corresponding vertical winding device needs to be used for wire management, affecting work efficiency. Furthermore… Figure 2 The elliptical shaft hole of the clamping wheel on the clamping component 03 is provided to allow for a small margin to accommodate the inconvenience of installation caused by deviations in wire size.

[0035] To solve the above problems, such as Figure 3-5 As shown, the vertical winding device for the high-voltage coil of the dry transformer of this application includes a device body 1 and two wire clamping devices arranged on the device body 1 with clamping directions perpendicular to each other. The two wire clamping devices are used to clamp the flat wire from the thickness direction and the width direction of the flat wire, respectively. The wire clamping device includes two sets of pulley frames whose relative positions are adjustable along the clamping direction. Each pulley frame is provided with a set of wire clamping pulleys 9 for clamping the wire. The two sets of wire clamping pulleys 9 form a wire clamping channel with adjustable spacing.

[0036] To reduce the difficulty of assembling the clamping device, the pulley frame includes a fixed pulley frame 3 and a movable pulley frame 2, which are fixedly mounted on the main body 1 of the device. The movable pulley frame 2 is vertically mounted on the cantilever 12 of the main body 1, which is parallel to the clamped wire, via adjusting bolts 5. Because the fixed pulley frame 3 is easier to install, one of the pulley frames is set to be fixed.

[0037] To fix the current position of the movable pulley bracket 2, a locking nut 4 is screwed between the adjusting bolt 5 and the cantilever 12 to lock the current axial position of the adjusting bolt 5. The locking nut 4 ensures that the clamping channel of the clamping device can be stably maintained, thus ensuring the clamping force of the wire clamping device.

[0038] It also includes a slide bar 11 for guiding the movable pulley frame 2, providing a guiding function for the movement of the movable pulley frame 2 in the clamping direction.

[0039] To ensure that the conductor can quickly find the inlet and outlet directions of the clamping channel, both ends of the main body 1 of the device are equipped with guide devices, which are used to guide the flat conductor in the thickness direction and the width direction, respectively.

[0040] The guiding device includes a fixed shaft 7 and an eccentric shaft 8. Both the fixed shaft 7 and the eccentric shaft 8 are equipped with guide pulleys 10 for clamping the wire. The guide pulleys 10 are fixed to the same side of the main body 1. There is an eccentric distance between the axis of the eccentric shaft 8 and the center of the pulley on the eccentric shaft 8. The guide pulleys 10 on the eccentric shaft 8 rotate around the eccentric shaft 8 with the eccentric distance as their radius, moving closer to the guide pulley 10 on the fixed shaft 7. The two guide pulleys 10 form an adjustable clamping channel. After the wire 01 passes through this clamping channel, the surface of the wire is clamped and upright. Because the guide pulleys 10 on the eccentric shaft 8 can automatically adjust according to the guide specifications, this wire-standing device can adapt to various guide specifications, improving its versatility.

[0041] In addition, in order to limit the wire from sliding out in the width or thickness direction and ensure that the wire is stably clamped in the clamping channel, the guide device adjacent to the clamping device clamping in the width direction clamps in the thickness direction; the guide device adjacent to the clamping device clamping in the thickness direction clamps in the width direction.

[0042] The pulleys mentioned above are all made of polytetrafluoroethylene (PTFE) rollers, which are not only wear-resistant but also softer than the material of wire 01 and will not damage wire 01, thus ensuring the quality of coil winding.

[0043] The main body 1 of the device has fixing components on both sides for securing its position. These fixing components are lifting rings 6, but other fixing components can also be used. The lifting rings 6 are connected to the wire feeding frame to ensure that the wire standing device does not move with the wire 01 during the winding process. The main body 1 of the device is made of hard aluminum, which is lightweight and has high strength, extending the service life of the device.

[0044] In this application, the guiding device passively changes the clamping width, while the uprighting device actively changes the clamping width, ensuring that the width and thickness of the conductor 01 can be uniformly clamped by different clamping structures, while ensuring that the conductor 01 will not slip out of the clamping channel during the clamping process.

[0045] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vertical winding device for vertically winding conductors of a dry-type high-voltage transformer coil, characterized in that, The device includes a main body and two wire clamping devices perpendicular to each other, each clamping direction. The two clamping devices are used to clamp the flat conductor in the thickness and width directions, respectively. Each clamping device includes two sets of pulley frames with adjustable relative positions along the clamping direction. Each pulley frame has a set of wire clamping pulleys, and the two sets of wire clamping pulleys form an adjustable-spaced wire clamping channel. Each pulley frame includes a fixed pulley frame and a movable pulley frame fixedly mounted on the main body. The movable pulley frame is vertically mounted on the main body and parallel to the conductor being clamped, via adjusting bolts. On the cantilever, both ends of the main body of the device are equipped with guide devices, which are used to guide the flat wire in the thickness direction and the width direction, respectively. The guide device includes a fixed shaft and an eccentric shaft. Both the fixed shaft and the eccentric shaft are equipped with guide pulleys for clamping the wire. The guide pulleys are fixed on the same side of the main body of the device. There is an eccentric distance between the axis of the eccentric shaft and the center of the guide pulley on the eccentric shaft. The guide pulley on the eccentric shaft rotates around the eccentric shaft with the eccentric distance as the rotation radius and moves closer to the guide pulley on the fixed shaft. The two guide pulleys form a clamping channel with an adjustable spacing.

2. The vertical winding device for the high-voltage coil of a dry-type transformer according to claim 1, characterized in that, A locking nut for locking the current axial position of the adjusting bolt is also screwed between the adjusting bolt and the cantilever.

3. The vertical winding device for the high-voltage coil of a dry-type transformer according to claim 1, characterized in that, It also includes a slide bar for guiding the movement of the pulley frame.

4. The vertical winding device for the high-voltage coil of a dry-type transformer according to claim 1, characterized in that, The clamping device that clamps in the width direction is adjacent to the guide device that clamps in the thickness direction; the clamping device that clamps in the thickness direction is adjacent to the guide device that clamps in the width direction.

5. The vertical winding device for the high-voltage coil of a dry-type transformer according to claim 1, characterized in that, The device body has fasteners on both sides for fixing the position of the device body, and the fasteners are lifting rings.

6. The vertical winding device for the vertically wound conductor of the dry-type high-voltage coil according to claim 1, characterized in that, The clamping pulley is a polyfluoroethylene roller.

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