A converter transformer coil inner paper tube supporting tool

Abstract

The utility model belongs to the converter transformer technical field relates to a converter transformer coil inner paper tube support frock, including inner cross support subassembly, support ring, vertical support rod and top plate subassembly, the support ring is enclosed by at least two arc plates, and the both ends of each arc plate are all processed and bind through -hole, and the dacron shrinkable tube is passed into adjacent pair of binding through -hole and will arc plate bind and fix, at least two support rings are assembled from top to bottom in the outside of four vertical support rods, and the inside fixed mounting top plate subassembly of support ring on vertical support rod, and the four end portions of top plate subassembly and inner cross support subassembly are fixedly connected, and inner cross support subassembly can adjust the relative distance between inner cross support subassembly center and top plate subassembly. The utility model discloses through design the support ring of outer diameter can fine adjustment, utilizes inner cross support subassembly cooperation top plate subassembly on vertical support rod, has realized support ring outer diameter and vertical support rod quick adjustment, has eliminated the gap between frock and inner paper tube.

Description

Technical Field

[0001] This utility model belongs to the field of converter transformer technology, specifically relating to a paper tube support tool for converter transformer coils. Background Technology

[0002] The paper tube inside the converter transformer coil is made of 3mm thick extra-hard cardboard. After the coil dries, the paper tube is prone to bulging and deformation, making coil assembly difficult. To prevent the paper tube inside the converter transformer coil from shrinking and deforming after the coil dries, support fixtures are needed to support the paper tube during coil assembly, storage, and drying.

[0003] Because the inner diameter of the paper tube inside the coil has manufacturing tolerances, and the existing support fixture cannot adjust the outer diameter of the fixture, uneven gaps exist between the support fixture and the paper tube inside the coil. This causes localized bulging and deformation of the paper tube inside the coil after drying. Furthermore, the shrinkage of the paper tube inside the coil after drying increases the friction between the paper tube and the support fixture, making it easy to damage the paper tube when removing the support fixture. Summary of the Invention

[0004] To prevent the paper tube inside the converter transformer coil from bulging and deforming, and to address the insulation damage to the inner paper tube caused by removing the support fixture after the coil has dried, this invention provides a converter transformer coil inner paper tube support fixture with an adjustable outer diameter. The technical solution adopted by this invention is as follows: A paper tube support fixture for a converter transformer coil includes an inner cross support assembly, support rings, vertical support rods, and a top plate assembly. The support ring is formed by at least two arc-shaped plates, each arc-shaped plate having binding through holes at both ends. Polyester shrink tubing is inserted into a pair of adjacent binding through holes at the ends of the arc-shaped plates to bind and fix them. At least two support rings are snapped together from top to bottom on the outside of four vertical support rods, with the outer surface of the support rings flush with the outer surface of the vertical support rods. The top plate assembly is fixedly installed on the vertical support rods corresponding to the inner side of the support rings. The top plate assembly is fixedly connected to the four ends of the inner cross support assembly. The relative distance between the center of the inner cross support assembly and the top plate assembly can be adjusted.

[0005] Preferably, the length of the vertical support rod is adapted to the height of the inner paper tube, and support ring mounting grooves distributed vertically are opened on the width surface of the vertical support rod. A pair of top plate assembly mounting holes are opened below the upper support ring mounting groove, and top plate assembly mounting holes are opened on the upper and lower sides of the lower support ring mounting groove, respectively.

[0006] Preferably, the top plate assembly includes a top plate, an H-shaped connecting plate one, and an H-shaped connecting plate two. The openings on both sides of the H-shaped connecting plate one and the H-shaped connecting plate two correspond to the support ring and the top plate, respectively. The sides of the top plate adjacent to the H-shaped connecting plate one and the H-shaped connecting plate two are machined with snap-fit ​​grooves. The size of the snap-fit ​​grooves matches the thickness of the H-shaped connecting plate one and the H-shaped connecting plate two. Fastening bolt mounting holes one corresponding to the mounting holes of the top plate assembly are machined on the H-shaped connecting plate one and the H-shaped connecting plate two. Fastening bolt mounting holes two are machined on one side of the fastening bolt mounting holes away from the vertical support rod. Insulating screws two are inserted into the fastening bolt mounting holes one and the mounting holes of the top plate assembly, and insulating nuts two are screwed onto both ends of the insulating screws two. Insulating screws three are inserted into the fastening bolt mounting holes two on the H-shaped connecting plate one and the H-shaped connecting plate two, and insulating nuts three are screwed onto both ends of the insulating screws three.

[0007] Preferably, the inner cross support assembly includes a cross fixing plate, a connecting rod, a connector, and an insulating screw. One end of the connecting rod is fixedly installed at the four corners between a pair of upper and lower cross fixing plates. The other end of the connecting rod is fixedly connected to one end of the connector, and the other end of the connector is threadedly connected to one end of the insulating screw.

[0008] Preferably, an insulating screw mounting hole corresponding to the other end of the insulating screw is provided on the top plate, the other end of the insulating screw passes through the insulating screw mounting hole, and an insulating nut is screwed onto the insulating screw on both sides of the top plate.

[0009] Preferably, the top plate, H-shaped connecting plate one and H-shaped connecting plate two are all made of laminated wood, and the insulating screw one, insulating screw two, insulating screw three, insulating nut one, insulating nut two and insulating nut three are all made of glass fiber.

[0010] Preferably, the cross-shaped fixing plate is made of metal sheet, the connecting rod is made of laminated wood strips, and the connector is made of stainless steel.

[0011] Preferably, the curved plate is made of laminated wood, and the vertical support rod is also made of laminated wood.

[0012] Preferably, a lifting hole is provided at the upper position of the vertical support rod.

[0013] Preferably, the top plate assembly is located below the top support ring, and the other top plate assemblies are positioned opposite the other support rings.

[0014] The beneficial effects of this utility model are: This invention features a support ring with an adjustable outer diameter. By adjusting the inner cross support assembly in the forward direction, in conjunction with the top plate assembly on the vertical support rod, the outer diameter of the support ring and the position of the vertical support rod can be quickly adjusted. This ensures a seamless connection between the inner paper tube of the coil and the support ring and vertical support rod of the support fixture, preventing gaps caused by manufacturing tolerances. After tightening, the support ring and vertical support rod are tightly fitted to the inner paper tube, guaranteeing effective support for the coil's inner paper tube. After the coil dries, the inner cross support assembly can be adjusted in the reverse direction to reduce friction between the support fixture and the inner paper tube, facilitating smooth removal of the support fixture and preventing damage to the inner paper tube during removal. Compared to fixed-size support fixtures, the inner cross support assembly, vertical support rod, and top plate assembly in this support fixture are all reusable. Only a spliced ​​inner support ring needs to be manufactured according to different inner paper tube sizes. The support fixture can be used for inner paper tubes of converter transformer coils of any size, reducing the manufacturing cost of the support fixture. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a perspective view of the support fixture in the main view direction of an embodiment of the present utility model. Figure 2 This is a top view of the support fixture according to an embodiment of the present utility model; Figure 3 This is a top view of the support ring according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the inner cross support assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the vertical support rod according to an embodiment of the present invention; Figure 6 This is a structural schematic diagram of the top plate assembly according to an embodiment of the present utility model, wherein part a is the front view of the top plate assembly and part b is the top view of the top plate assembly; In the diagram, 1 is the inner cross support assembly, 2 is the support ring, 3 is the vertical support rod, 4 is the top plate assembly, 5 is the arc plate, 6 is the binding through hole, 7 is the cross fixing plate, 8 is the connecting rod, 9 is the connector, 10 is the first insulating screw, 11 is the lifting hole, 12 is the support ring mounting groove, 13 is the top plate assembly mounting hole, 14 is the top plate, 15 is the insulating screw mounting hole, 16 is the first H-shaped connecting plate, 17 is the second H-shaped connecting plate, 18 is the first fastening bolt mounting hole, and 19 is the second fastening bolt mounting hole. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 As shown, a paper tube support fixture for a converter transformer coil includes an inner cross support assembly 1, a support ring 2, a vertical support rod 3, and a top plate assembly 4. The support ring 2 is formed by four arc-shaped plates 5, each with binding through holes 6 machined at both ends. The arc-shaped plates 5 are made of laminated wood with a thickness of 50mm. When assembling the four arc-shaped plates 5, polyester shrink tubing is inserted into a pair of pre-drilled binding through holes 6 at the ends of the arc-shaped plates 5 to bind and fix the adjacent pair of arc-shaped plates 5. The gap between the ends of the four arc-shaped plates 5 can be adjusted according to the actual dimensional deviation of the paper tube inside the coil, achieving a slight adjustment of the outer diameter of the support ring 2. Four support rings 2 are snapped together from top to bottom on the outside of four vertical support rods 3. A top plate assembly 4 is fixedly installed on the vertical support rods 3 corresponding to the inside of the support rings 2. The top plate assembly 4 is fixedly connected to the four ends of the inner cross support assembly 1. The inner cross support assembly 1 can adjust the relative distance between the center position of the inner cross support assembly 1 and the top plate assembly 4, thereby finely adjusting the outer diameter of the support rings 2 so that the support rings 2 and the vertical support rods 3 fit seamlessly with the inner paper tube of the coil.

[0018] like Figure 4 As shown, the inner cross support assembly 1 includes a cross fixing plate 7, a connecting rod 8, a connector 9, and an insulating screw 10. The cross fixing plate 7 is made of metal. The connecting rod 8 is made of laminated wood strips with a width of 50mm and a thickness of 50mm. The length of the connecting rod 8 is determined according to the inner diameter of the inner paper tube. One end of the connecting rod 8 is fixedly installed at the four corners between the upper and lower pairs of cross fixing plates 7 using stainless steel bolts and stainless steel nuts. The other end of the connecting rod 8 is fixedly installed at one end of the connector 9, which is in the same direction as the connecting rod 8. The connector 9 is made of stainless steel. An M16*100 internal thread hole in the same direction as the connecting rod 8 is opened at the center of the other end of the connector 9. The insulating screw 10 is threaded to the other end of the connector 9 through the internal thread hole. The length of the insulating screw 10 extending out of the connector 9 can be adjusted by rotation. The insulating screw 10 is made of glass fiber. Fixedly installing the connector 9 at the end of the connecting rod 8 is a conventional technical method. For example, the end of the connector 9 without an internal thread hole is machined into a thinner structure and inserted into the connecting rod 8. At the same time, symmetrical U-shaped plates are machined on the connector 9. The connector 9 is reliably fixed to the connecting rod 8 by bolts passing through the U-shaped plates, the connecting rod 8 and the thinner structure of the connector 9.

[0019] like Figure 5As shown, the vertical support rod 3 is made of laminated wood, with a thickness of 50mm, a width of 70mm, and a length adapted to the height of the inner paper tube. A Φ50mm lifting hole 11 is provided at the upper part of the vertical support rod 3 for lifting the entire support fixture. The four lifting holes 11 form a ring structure, making the overall lifting operation of the support fixture more convenient and stable. Four vertically distributed support ring mounting slots 12 are designed on the width surface of the vertical support rod 3 for assembling and fixing the support rings 2. A pair of top plate assembly mounting holes 13 are provided below the upper support ring mounting slots 12, and top plate assembly mounting holes 13 are provided on the upper and lower sides of the three lower support ring mounting slots 12 respectively. The top plate assembly mounting holes 13 are used to fix and install the top plate assembly 4 on the vertical support rod 3. To prevent damage to the upper edge of the inner paper tube during the overall installation of the inner paper tube support fixture, the upper and lower ends of the vertical support rod 3 are chamfered. After the support ring 2 is attached to the vertical support rod 3, the outer surface of the support ring 2 is flush with the outer surface of the vertical support rod 3.

[0020] Because the converter transformer coil requires support blocks at the bottom to prevent the inner paper tube support fixture from sinking during storage and drying, the bottom support ring 2 needs to be approximately 150mm from the bottom of the inner paper tube. This requirement does not apply to the top of the inner paper tube. However, to prevent deformation of the top of the inner paper tube after drying, the top support ring 2 needs to be positioned as close to the top of the inner paper tube as possible. Therefore, the positions of the top and bottom support rings 2 are different. Since the top support ring 2 is too high to be directly aligned with the top plate assembly 4, the positions of the top plate assembly 4 and the support ring 2 are staggered. The top top plate assembly 4 is located below the top support ring 2, while the other top plate assemblies 4 are aligned with the other support rings 2.

[0021] like Figure 6As shown, the top plate assembly 4 includes a top plate 14, an H-shaped connecting plate 16, and an H-shaped connecting plate 17 assembled as a single unit. All three components (top plate 14, H-shaped connecting plate 16, and H-shaped connecting plate 17) are made of 20mm thick laminated wood. The outer openings of the H-shaped connecting plates 16 and 17 correspond to the support rings 2, which are fitted into these outer openings (except for the upper support rings). The inner openings of the H-shaped connecting plates 16 and 17 correspond to the top plate 14, which is fitted into these inner openings. The sides of the top plate 14 adjacent to the H-shaped connecting plates 16 and 17 have locking grooves, the dimensions of which match the thickness of the H-shaped connecting plates 16 and 17. An insulating screw mounting hole 15 corresponding to the insulating screw 10 is provided on the top plate 14. The outer end of the insulating screw 10 passes through the insulating screw mounting hole 15. Insulating nuts made of glass fiber are screwed onto the insulating screws 10 on both sides of the top plate 14. The top plate 14 is fixed to the insulating screws 10 by a pair of insulating nuts. On the outer sides of H-shaped connecting plate 16 and H-shaped connecting plate 2, a pair of fastening bolt mounting holes 18 corresponding to the top plate assembly mounting holes 13 on the vertical support rod 3 are machined. At the same time, a fastening bolt mounting hole 29 is machined at a position away from the vertical support rod 3. The two fastening bolt mounting holes 18 and 2 are distributed in a triangle. During installation, H-shaped connecting plate 16 and H-shaped connecting plate 2 are located on both sides of the vertical support rod 3. By inserting glass fiber insulating screws 2 into the fastening bolt mounting holes 18 and the top plate assembly mounting holes 13, and screwing glass fiber insulating nuts 2 onto both ends of the insulating screws 2, H-shaped connecting plate 16 and H-shaped connecting plate 2 are fixedly connected to the vertical support rod 3. By inserting insulating screws made of glass fiber into the fastening bolt mounting holes 219 on H-shaped connecting plate 16 and H-shaped connecting plate 27, and screwing insulating nuts made of glass fiber onto both ends of the insulating screws, H-shaped connecting plate 16 and H-shaped connecting plate 27 are further fastened to the top plate 14 as a whole. Before the top plate assembly 4 is installed on the vertical support rod 3, inserting insulating screws into the fastening bolt mounting holes 219 and screwing in insulating nuts can temporarily fix H-shaped connecting plate 16 and H-shaped connecting plate 27. By adjusting the length of the insulating screw 10 in the inner cross support assembly 1, the support ring 2 and the vertical support rod 3 are pressed against the inner wall of the inner paper tube.

[0022] To prevent the generation of metal dust, in this embodiment of the invention, both the insulating screw and the insulating nut are made of glass fiber, which can ensure mechanical strength and avoid the generation of metal dust.

[0023] This utility model provides a paper tube support fixture for the inner coil of a converter transformer, and its assembly method is as follows: 1. Assemble the cross fixing plate 7, connecting rod 8, connector 9, and insulating screw 10 into a four-piece inner cross support assembly 1. Specifically, use M12 stainless steel bolts and nuts to fix one end of the connecting rod 8 between a pair of cross fixing plates 7, fix one end of the connector 9 to the other end of the connecting rod 8, and screw the insulating screw 10 into the internal threaded hole at the other end of the connector 9. The depth to which the insulating screw 10 is screwed into the connector 9 can be calculated in advance according to the inner diameter of the paper tube inside the coil.

[0024] 2. Install the top plate 14 onto the insulating screw 10, and tighten the insulating nuts on both sides of the top plate 14 to fix the top plate 14 in place. Then, fix the H-shaped connecting plate 16 and the H-shaped connecting plate 17 onto the vertical support rod 3 using the insulating screw 2 and the insulating nut 2.

[0025] 3. Position the vertical support rod 3 horizontally. Connect the top plate 14 to the H-shaped connecting plate 16 and H-shaped connecting plate 2 17. Assemble the inner cross support assembly 1 with the four vertical support rods 3. Install the M16 insulating screw rod 3 and insulating nut 3. Securely connect the top plate 14 to the H-shaped connecting plate 16 and H-shaped connecting plate 2 17 as a single unit. Insert the lifting straps into the lifting hole 11 and use a crane or other equipment to rotate the support fixture to a vertical position.

[0026] 4. Assemble the support ring 2 at the support ring mounting groove 12 of the vertical support rod 3, and temporarily tie and fix the arc plate 5 with polyester shrink tubing. Note that a 3mm gap should be left between the arc plates 5 for fine adjustment of the outer diameter of the support ring 2.

[0027] 5. Check and measure whether the outer diameter of each support ring 2 is consistent. Adjust to ensure that the outer diameter of each support ring 2 is consistent, and ensure that all nuts are securely tightened. After inspection and approval, lift the entire support fixture and lower it into the paper tube inside the coil.

[0028] 6. Check all gaps in the support fixture and inner paper tube, adjust the extension length of the insulating screw 10 of the inner cross support assembly 1 relative to the connecting piece 9, tighten it until there are no gaps, and then tighten a pair of insulating nuts.

[0029] 7. After the coil is dry, loosen the insulating nut on the inner cross support assembly 1, check for gaps between the inner paper tube and the support fixture, and then lift the support fixture out of the inner paper tube as a whole.

[0030] In this embodiment of the utility model, all technical features not described in detail are existing technologies or conventional technical means, and will not be repeated here.

[0031] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model.

Claims

1. A converter transformer coil inner paper tube support tooling characterized by, The assembly includes an inner cross support component (1), a support ring (2), a vertical support rod (3), and a top plate component (4). The support ring (2) is formed by at least two arc-shaped plates (5). Each arc-shaped plate (5) has binding through holes (6) at both ends. Polyester shrink tubes are inserted into a pair of adjacent binding through holes (6) at the ends of the arc-shaped plates (5) to bind and fix the arc-shaped plates (5). At least two support rings (2) are snapped together from top to bottom on the outside of four vertical support rods (3). The outer surface of the support ring (2) is flush with the outer surface of the vertical support rod (3). The top plate component (4) is fixedly installed on the vertical support rod (3) corresponding to the inner side of the support ring (2). The top plate component (4) is fixedly connected to the four ends of the inner cross support component (1). The inner cross support component (1) can adjust the relative distance between the center of the inner cross support component (1) and the top plate component (4).

2. The coil inner paper tube support tooling for a converter transformer according to claim 1, characterized in that, The length of the vertical support rod (3) is adapted to the height of the inner paper tube. Support ring mounting grooves (12) are provided on the width surface of the vertical support rod (3). A pair of top plate assembly mounting holes (13) are provided below the upper support ring mounting groove (12). Top plate assembly mounting holes (13) are provided on the upper and lower sides of the lower support ring mounting groove (12).

3. The coil inner paper tube support tooling for a converter transformer of claim 2, wherein, The top plate assembly (4) includes a top plate (14), an H-shaped connecting plate one (16), and an H-shaped connecting plate two (17). The openings on both sides of the H-shaped connecting plate one (16) and the H-shaped connecting plate two (17) correspond to the support ring (2) and the top plate (14), respectively. The sides of the top plate (14) adjacent to the H-shaped connecting plate one (16) and the H-shaped connecting plate two (17) are machined with snap-fit ​​grooves. The size of the snap-fit ​​grooves matches the thickness of the H-shaped connecting plate one (16) and the H-shaped connecting plate two (17). The H-shaped connecting plate one (16) and the H-shaped connecting plate two (17) are machined with... A fastening bolt mounting hole one (18) is corresponding to the mounting hole (13) of the top plate assembly. A fastening bolt mounting hole two (19) is machined on the side of the fastening bolt mounting hole one (18) away from the vertical support rod (3). An insulating screw two is inserted into the fastening bolt mounting hole one (18) and the mounting hole (13) of the top plate assembly, and an insulating nut two is screwed on both ends of the insulating screw two. An insulating screw three is inserted into the fastening bolt mounting hole two (19) on the H-shaped connecting plate one (16) and the H-shaped connecting plate two (17), and an insulating nut three is screwed on both ends of the insulating screw three.

4. The paper tube support fixture inside the converter transformer coil according to claim 3, characterized in that, The inner cross support assembly (1) includes a cross fixing plate (7), a connecting rod (8), a connector (9), and an insulating screw (10). One end of the connecting rod (8) is fixedly installed at the four corners between a pair of cross fixing plates (7) set up above and below. The other end of the connecting rod (8) is fixedly connected to one end of the connector (9), and the other end of the connector (9) is threadedly connected to one end of the insulating screw (10).

5. The paper tube support fixture inside the converter transformer coil according to claim 4, characterized in that, An insulating screw mounting hole (15) is opened on the top plate (14) corresponding to the other end of the insulating screw (10). The other end of the insulating screw (10) passes through the insulating screw mounting hole (15). An insulating nut is screwed onto the insulating screw (10) on both sides of the top plate (14).

6. The paper tube support fixture inside the converter transformer coil according to claim 5, characterized in that, The top plate (14), H-shaped connecting plate one (16) and H-shaped connecting plate two (17) are all made of laminated wood. The insulating screw one (10), insulating screw two, insulating screw three, insulating nut one, insulating nut two and insulating nut three are all made of glass fiber.

7. The paper tube support fixture inside the converter transformer coil according to claim 4, characterized in that, The cross fixing plate (7) is made of metal plate, the connecting rod (8) is made of laminated wood strip, and the connector (9) is made of stainless steel.

8. The paper tube support fixture inside the converter transformer coil according to claim 1, characterized in that, The arc-shaped plate (5) is made of laminated wood, and the vertical support rod (3) is also made of laminated wood.

9. The paper tube support fixture inside the converter transformer coil according to claim 2, characterized in that, A lifting hole (11) is made at the upper position of the vertical support rod (3).

10. The paper tube support fixture inside the converter transformer coil according to claim 2, characterized in that, The top plate assembly (4) is located below the top support ring (2), and the other top plate assemblies (4) are aligned with the other support rings (2).

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