Internal wire welding device and welding table for oil-immersed transformer coil

Abstract

An oil-immersed transformer coil internal wire welding device comprises a supporting table and a device table installed at the upper end of the supporting table, the device table comprises a bottom plate, a fixed clamping block is arranged at one end of the bottom plate, a threaded supporting plate is arranged at the other end of the bottom plate, and one end of a threaded transmission rod penetrates through a threaded hole of the threaded supporting plate and is movably connected with a movable clamping block. Elastic gaskets are arranged on the two close side faces of the movable clamping block and the fixed clamping block, a horizontal groove is formed in one side face of the movable clamping block, the movable clamping block and the fixed clamping block can clamp a wire by rotating the threaded transmission rod, the elastic gaskets can ensure that a wire paint film does not fall off, and the horizontal groove can improve the stability of the clamped wire; an oil-immersed transformer coil internal wire welding table comprises two welding devices, one welding device is in sliding connection with a welding table top through a long-strip-shaped through hole, the effect of adjusting the distance between the two welding devices is achieved, and the welding table can store welding tools and welding flux and can be conveniently moved to a target area.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a welding device and a welding platform for internal wires of an oil-immersed transformer coil. Background Art

[0002] In recent years, the new energy market has developed rapidly, the capacity of supporting transformers has gradually increased, and the product structure has also become diversified; oil-immersed transformers basically use double-winding structure coils. If the amount of wire used in the winding process is insufficient, the internal wire of the coil needs to be welded. When welding the wire, the operator needs to lay a fireproof cloth on the coil, manually bend and connect the two wires to be welded at the front end or the upper part of the coil, and then start the welding equipment for welding. Since the welding space is very narrow, workers are restricted from operating at the front end or the upper part of the coil, the operation is time-consuming and labor-intensive, and there are certain fire safety hazards. In order to avoid the safety hazards caused by welding in the coil winding area, the welding operation area is moved to the rear of the coil. However, due to the thin specifications and soft material of the oil-immersed transformer wire, the existing bench vise specifications are large, and manual movement is difficult, and it is easy to cause wire deformation and paint film cracking when clamping the wire, which cannot meet the welding needs of the internal wire of the coil of existing products. Summary of the invention

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to propose a welding device and a welding table for the internal wire of an oil-immersed transformer coil. The wire is clamped by combining a movable clamping block and a fixed clamping block in the welding device. The horizontal groove on the side of the movable clamping block can fix the position of the wire. The two sets of welding devices can further ensure that the two wires to be welded are clamped stably. The elastic gasket on the side of the clamping block can also prevent the paint film of the wire from falling off.

[0004] To achieve the above purpose, the technical solution of the utility model is:

[0005] A device for welding wires inside oil-immersed transformer coils, comprising a support table 6, an apparatus table 5 is installed on the upper end of the support table 6, the apparatus table 5 comprises a base plate 13, a fixed clamping block 1 is arranged at one end of the base plate 13, a threaded support plate 3 is arranged at the other end of the base plate 13, a movable clamping block 2 parallel to and opposite to the fixed clamping block 1 is placed on the base plate 13 between the fixed clamping block 1 and the threaded support plate 3, one end of a threaded transmission rod 4 passes through a threaded hole of the threaded support plate 3 and is movably connected to the movable clamping block 2; the movable clamping block 2 is moved close to or away from the fixed clamping block 1 by rotating the threaded transmission rod 4, thereby realizing the movable clamping block 2 and the fixed clamping block 1 being used in combination to clamp the wire.

[0006] Furthermore, elastic gaskets are provided on two sides of the movable clamping block 2 and the fixed clamping block 1 for clamping the conductor.

[0007] Furthermore, a horizontal groove 11 is provided on the side of the movable clamping block 2 close to the fixed clamping block 1; the depth of the horizontal groove 11 is smaller than the diameter of the wire, and the wire clamped by the movable clamping block 2 and the fixed clamping block 1 is placed inside the horizontal groove 11, which can increase the stability of the clamped wire.

[0008] Furthermore, an elastic gasket is arranged on the inner wall of the horizontal groove 11 .

[0009] A welding platform for internal wires of oil-immersed transformer coils comprises a welding platform 10 and an internal wire welding device for oil-immersed transformer coils, wherein a support platform 6 of the welding device is movably connected to the welding platform 10.

[0010] Furthermore, two welding devices are installed on the welding table 10, wherein the support platform 6 of one welding device is slidably connected to the welding table 10 via a long through hole 12 on the welding table 10, and the fixed clamping blocks 1 of the two welding devices are located in the same plane close to the side of the corresponding movable clamping block 2.

[0011] Furthermore, the welding table also includes a drawer 7 located at the bottom of the welding table surface 10, a material storage box 8 is arranged at the bottom of the drawer 7, and casters 9 are arranged at the bottom of the welding table.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can provide a suitable operating height for operators of different heights through the detachable support platform 6. The elastic gaskets on the sides of the movable clamping block 2 and the fixed clamping block 1 can ensure that the paint film of the wire is not squeezed or rubbed off when the wire is clamped. The horizontal groove 11 on the side of the movable clamping block 2 can further increase the stability of the clamped wire.

[0014] 2. The utility model further installs two welding devices on the welding table, one of which is slidable, so that the operator can adjust the distance between the two welding devices according to his own habits. At the same time, a horizontal groove 11 is provided on the side of the movable clamping block 2 of the welding device, which can fix both wires inside the horizontal groove 11, thereby increasing the stability of the two clamped wires and facilitating welding for the operator. A drawer 7, a material storage box 8 and casters 9 are also installed at the bottom of the welding table, which can facilitate the storage of welding tools and solder and facilitate movement to the target area. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of the structure of a wire welding device inside an oil-immersed transformer coil.

[0016] Figure 2The present invention is a schematic diagram of the structure of a welding station for the internal wires of an oil-immersed transformer coil.

[0017] In the figure: 1. fixed clamping block; 2. movable clamping block; 3. threaded support plate; 4. threaded transmission rod; 5. installation table; 6. support table; 7. drawer; 8. storage box; 9. casters; 10. welding table; 11. horizontal groove; 12. long through hole; 13. bottom plate. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0019] A device for welding the internal wire of an oil-immersed transformer coil comprises a support platform 6, a device platform 5 is installed on the upper end of the support platform 6, the support platform 6 is detachable, and is movably connected to the lower fixed table and the upper device platform 5 by bolts or other connection methods, respectively. The operator can select support platforms 6 of different heights according to the height or not use the support platform 6; the device platform 5 comprises a bottom plate 13, a fixed clamping block 1 is arranged at one end of the bottom plate 13, a threaded support plate 3 is arranged at the other end of the bottom plate 13, and a fixed clamping block 1 is placed on the bottom plate 13 between the fixed clamping block 1 and the threaded support plate 3. A movable clamping block 2 is arranged parallel to and opposite to the fixed clamping block 1, one end of the threaded transmission rod 4 passes through the threaded hole of the threaded support plate 3 and is movably connected to the movable clamping block 2, and the movable connection is specifically that one end of the threaded transmission rod 4 is movably connected to the concave ball structure inside the movable clamping block 2 through the connecting shaft ball head, and the fixed clamping block 1 and the fixed clamping block 2 are both rectangular structures; by rotating the threaded transmission rod 4, the movable clamping block 2 can be moved close to or away from the fixed clamping block 1, thereby realizing the movable clamping block 2 and the fixed clamping block 1 can be used in combination to clamp the wire.

[0020] During welding, the two wires are fixedly clamped using the movable clamping block 2 and the fixed clamping block 1, and the ends of the two wires are made to protrude a certain distance above the movable clamping block 2, and then the ends of the two wires are overlapped and welded.

[0021] Furthermore, elastic gaskets are provided on two sides of the movable clamping block 2 and the fixed clamping block 1 for clamping the wire, and the elastic gaskets can prevent the wire from being deformed and the paint film of the wire from being squeezed or falling off due to friction.

[0022] Furthermore, a horizontal groove 11 is provided on the side of the movable clamping block 2 close to the fixed clamping block 1; the depth of the horizontal groove 11 is less than the diameter of the wire, and the wire clamped by the movable clamping block 2 and the fixed clamping block 1 is placed inside the horizontal groove 11, which can increase the stability of the clamped wire; the horizontal groove 11 can be set to a variety of structures such as a rectangular groove, an arc groove, etc. that match the cross-sectional shape of the wire. The wire is placed inside the horizontal groove 11 and fixedly clamped by the movable clamping block 2 and the fixed clamping block 1. The wire end protrudes a certain distance from the movable clamping block 2, and other devices are used to fix the other wire end and complete the welding.

[0023] Furthermore, an elastic gasket is provided on the inner wall of the horizontal groove 11; the elastic gasket can prevent the wire from being deformed and the wire paint film from being squeezed or falling off due to friction.

[0024] A welding table for internal wires of oil-immersed transformer coils comprises a welding table top 10 and an oil-immersed transformer coil internal wire welding device. The support table 6 of the welding device is movably connected to the welding table top 10. The welding table top 10 is a horizontal surface formed by Q235B steel.

[0025] Furthermore, two welding devices are installed on the welding table 10, wherein the support platform 6 of one welding device is slidably connected to the welding table 10 via a long through hole 12 on the welding table 10, and the fixed clamping blocks 1 of the two welding devices are located in the same plane close to the side of the corresponding movable clamping block 2.

[0026] Before welding, one welding device is fixed and the other welding device is slid so that the spacing between the fixed clamping blocks 1 of the two welding devices is within the range of 80mm to 100mm; during welding, the two welding devices respectively fix and clamp the end of a wire, and the overlapping distance of the two wire ends to be welded is within the range of 15mm to 20mm.

[0027] Furthermore, the welding table also includes a drawer 7 located at the bottom of the welding table surface 10, and the drawer 7 is a pull-out structure for storing tools required for the welding process. A material storage box 8 is provided at the bottom of the drawer 7, and the material storage box 8 is a double-door structure for storing solder used in the welding process. Casters 9 are provided at the bottom of the welding table. The casters 9 are composed of four universal wheels, which are respectively located at the four corners of the bottom of the welding table and are used for moving and fixing the welding table.

[0028] The working principle of the utility model is:

[0029] When the wires inside the coil need to be welded, a welding device can be used alone. The operator rotates the threaded transmission rod 4 on the welding device to separate the movable clamping block 2 and the fixed clamping block 1 by a certain distance. After the two wires are bent and the ends of the wires protrude a certain distance above the fixed clamping block 1, the threaded transmission rod 4 is rotated to fix the two wires through the movable clamping block 2 and the fixed clamping block 1, and the welding is completed after the ends of the two wires overlap.

[0030] When the wire inside the coil needs to be welded, a welding table equipped with two welding devices can also be used. The operator moves the welding table to the welding area, brakes and locks the welding table through the caster 9, slides the welding device slidably connected to the welding table surface 10, and makes the distance between the fixed clamping blocks 1 of the two welding devices the target distance; rotates the threaded transmission rod 4 on the welding device to separate the movable clamping block 2 and the fixed clamping block 1 by a certain distance, fixes the two wires in the horizontal grooves 11 of the two movable clamping blocks 2 respectively, and overlaps the two wire ends by a certain distance, and then reversely rotates the threaded transmission rod 4 to make the movable clamping block 2 and the fixed clamping block 1 gradually approach and finally fix and clamp the wires; the operator uses the drawer 7 and the storage box 8 to take out the welding tools and solder respectively, and after completing the welding, puts the welding tools and solder back into the drawer 7 and the storage box 8, rotates the threaded transmission rod 4 to separate the movable clamping block 2 and the fixed clamping block 1, and takes out the welded wire; opens the foot brake of the caster 9 to move the welding device to the storage area.

Claims

1. A device for welding wires inside coils of oil-immersed transformers, comprising a support platform (6), a device platform (5) being mounted on the upper end of the support platform (6), characterized in that: The device platform (5) comprises a base plate (13), one end of the base plate (13) is provided with a fixed clamping block (1), the other end of the base plate (13) is provided with a threaded support plate (3), a movable clamping block (2) parallel to and opposite to the fixed clamping block (1) is placed on the base plate (13) between the fixed clamping block (1) and the threaded support plate (3), one end of the threaded transmission rod (4) passes through the threaded hole of the threaded support plate (3) and is movably connected to the movable clamping block (2); the movable clamping block (2) is moved closer to or away from the fixed clamping block (1) by rotating the threaded transmission rod (4), thereby achieving the movable clamping block (2) and the fixed clamping block (1) being used in combination to clamp the wire.

2. The welding device according to claim 1, characterized in that: Elastic gaskets are arranged on two sides of the movable clamping block (2) and the fixed clamping block (1) for clamping the conductor.

3. The welding device according to claim 1, characterized in that: A horizontal groove (11) is provided on the side of the movable clamping block (2) close to the fixed clamping block (1); the depth of the horizontal groove (11) is less than the diameter of the wire, and the wire clamped by the movable clamping block (2) and the fixed clamping block (1) is placed inside the horizontal groove (11), which can increase the stability of the clamped wire.

4. The welding device according to claim 3, characterized in that: An elastic gasket is arranged on the inner wall of the horizontal groove (11).

5. A welding table for internal wires of oil-immersed transformer coils, comprising a welding table surface (10), characterized in that: It also comprises the welding device according to any one of claims 1 to 4, wherein the support platform (6) of the welding device is movably connected to the welding table surface (10).

6. The welding station according to claim 5, characterized in that Two welding devices are installed on the welding table (10), wherein a support platform (6) of one welding device is slidably connected to the welding table (10) via a long through hole (12) on the welding table (10), and the fixed clamping blocks (1) of the two welding devices are located in the same plane near the side of the corresponding movable clamping block (2).

7. The welding station according to claim 5, characterized in that The welding table further comprises a drawer (7) located below the welding table surface (10), a material storage box (8) is arranged below the drawer (7), and casters (9) are arranged at the bottom of the welding table.

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