Large power transformer coil parallel winding wire separating device and using method thereof

Abstract

The invention relates to a large power transformer coil parallel winding wire separation device and a use method thereof, and belongs to the technical field of transformers. According to the technical scheme, a clamping plate (3) is in an L shape, the clamping plate (3) and a bottom plate (1) are connected into an integrated structure, a U-shaped clamping groove (12) is formed between the clamping plate (3) and the bottom plate (1), a main shaft (6) is connected to the bottom plate (1) in a threaded mode, a nylon rolling shaft (11) is in a hollow structure, and the nylon rolling shaft (11) is arranged on the main shaft (6) in a sleeving mode and is rotationally connected with the main shaft (6) through a bearing (9); when in use, the wire supporting frame cross beam (15) is fixed in the U-shaped clamping groove (12), the cross position of parallel winding wires (18) is adjusted to enable the parallel winding wires (18) to be located on the tensioning side of a vertical winding machine tool (16), and the parallel winding wires (18) are separated and sleeved on the nylon rolling shaft (18). The winding device has the beneficial effect that turn insulation damage caused by wire twisting in the winding process of the continuous coil parallel winding wire can be effectively avoided.

Description

Technical Field

[0001] This invention relates to a device for separating the coil windings of a large power transformer and its method of use, belonging to the field of transformer technology. Background Technology

[0002] Large power transformers often use two conductors wound in parallel for their high-voltage and medium-voltage coils. During the winding process on the winding machine, the two conductors need to be transposed. After transposition, the two conductors change their positions, changing from a parallel state to a crossed state. This crossing point exists between the clamping equipment and the winding machine. As the coil is wound, the crossing point moves towards the winding machine along with the conductors. Since the conductors on the winding machine are in a parallel state, the closer the crossing point of the two conductors is to the machine, the tighter it becomes, which can easily lead to twisting problems and damage to the outer insulation of the conductors. If this is not detected in time, it can easily cause inter-turn short circuit faults during transformer operation, posing a great threat to the safe operation of power grid equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a device for separating the coil winding conductors of a large power transformer and its usage method, which can effectively avoid the insulation damage of the turns caused by the stranding of the continuous coil winding conductors during the winding process, and solve the problems existing in the background art.

[0004] The technical solution of this invention is: A large power transformer coil winding conductor separation device includes a base plate, a clamping plate, a main shaft, bearings, and nylon rollers. The clamping plate is L-shaped and is connected to the base plate as an integral structure. A U-shaped groove is formed between the clamping plate and the base plate. The main shaft is threaded onto the base plate. The nylon rollers are hollow and are sleeved on the main shaft, and are rotatably connected to the main shaft through bearings.

[0005] Furthermore, nylon plates are respectively bonded to the card plate and the base plate that form the U-shaped card slot.

[0006] Furthermore, the base plate constituting the U-shaped slot is provided with a groove.

[0007] Furthermore, a retaining ring is provided between the nylon roller and the main shaft.

[0008] Furthermore, the U-shaped slot is provided with a cable tray beam and is fixed by fastening bolts and hexagonal nuts, and the lower end of the cable tray beam is provided with a cable tray.

[0009] A method for using a coil winding separator for a large power transformer, comprising the following steps: Step 1: Secure the cable tray beam into the U-shaped slot formed between the card plate and the base plate using fastening bolts and hexagonal nuts; Step 2: Place the wire support frame between the vertical winding machine and the wire tensioning device; Step 3: Adjust the crossing position of the parallel-wound wires so that they are on the tension side of the vertical winding machine, separate the parallel-wound wires and put them on the nylon rollers; Step 4: Begin the coil winding process.

[0010] The beneficial effect of this invention is that it can effectively avoid the breakage of the turn insulation caused by the stranding of wire during the continuous coil winding process. Attached Figure Description

[0011] Figure 1 This is the front view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is an exploded view of the present invention; Figure 5 This is an assembly effect diagram of the separator and cable tray of the present invention; Figure 6 This is another perspective view of the assembly of the separator and cable tray of the present invention; Figure 7 This is a diagram showing the arrangement of the vertical winding machine, the parallel winding wire separating device, and the wire tensioning device of the present invention. Figure 8 This is a diagram showing the relationship between the crossover positions of the conductors and the positions of the parallel conductor separating device of the present invention; In the diagram: 1. Base plate; 2. Fastening bolt; 3. Clamping plate; 4. Nylon plate; 5. Hexagonal nut; 6. Spindle; 7. Spring washer; 8. Flat washer; 9. Bearing; 10. Snap ring; 11. Nylon roller; 12. Clamping groove; 13. Wire support frame; 14. Wire support frame beam; 15. Vertical winding machine; 16. Wire tensioning device; 17. Parallel winding wire; 18. Parallel winding wire separating device; 19. Parallel winding wire crossing position; 20. Detailed Implementation

[0012] The invention will be further described below with reference to the accompanying drawings and examples.

[0013] See attached document Figures 1-8 A large power transformer coil winding conductor separation device includes a base plate 1, a clamping plate 3, a main shaft 6, a bearing 9, and a nylon roller 11. The clamping plate 3 is L-shaped and is connected to the base plate 1 as an integral structure. A U-shaped groove 12 is formed between the clamping plate 3 and the base plate 1. The main shaft 6 is threaded onto the base plate 1. The nylon roller 11 is a hollow structure and is sleeved on the main shaft 6 and is rotatably connected to the main shaft 6 through the bearing 9.

[0014] In this example, refer to the appendix. Figures 1-8The separating device includes a base plate 1, fastening bolts 2, clamping plate 3, nylon plate 4, hexagonal nut 5, main shaft 6, spring washer 7, flat washer 8, bearing 9, retaining ring 10, nylon roller 11, clamping groove 12, and slot 13, and is assembled according to the following steps: First, install the clamping plate part, which includes a base plate 1, fastening bolts 2, clamping plate 3 and nylon plate 4. The clamping plate 3 is L-shaped and the clamping plate 3 and the base plate 1 are welded into an integral structure. The clamping plate 3 and the base plate 1 form a U-shaped clamping groove 12. The nylon plate 4 is respectively glued to the base plate 1 and the clamping plate 3 that form the U-shaped clamping groove 12. The cable tray beam 15 is fixed in the U-shaped clamping groove 12 formed between the clamping plate 3 and the base plate 1 by fastening bolts 2 and hexagonal nuts 5. Next, install the spindle assembly, which is a kit consisting of a spindle 6, spring washers 7, flat washers 8, bearings 9, and retaining rings 10. Nylon rollers 11 are fitted onto the spindle 6, and retaining rings 10 are fitted onto the spindle 6, placed above the bearing 9, and engage with the slot inside the nylon roller 1. Hexagonal nuts 5 are fixed to the threaded portion at the bottom of the spindle 6, thus securing the spindle 6 to the base plate 1. Figure 1 , 2 As shown in 3, 4, 5, and 6; In use, the wire support frame 14 is placed between the vertical winding machine 16 and the wire tensioning device 17, and fixed to the ground, such as... Figure 7 As shown; adjust the crossing position of the winding wire 18 so that it is on the tension side of the vertical winding machine 16, separate the winding wire 18 and put it on the nylon roller 11; then start the coil winding work, as shown. Figure 8 As shown.

[0015] This device has been successfully applied in the coil winding process of several key projects, with good results.

Claims

1. A device for separating the coil-wound conductors of a large power transformer, characterized in that: It includes a base plate (1), a clamping plate (3), a main shaft (6), a bearing (9), and a nylon roller (11). The clamping plate (3) is L-shaped and the clamping plate (3) and the base plate (1) are connected as an integral structure. A U-shaped groove (12) is formed between the clamping plate (3) and the base plate (1). The main shaft (6) is threaded onto the base plate (1). The nylon roller (11) is a hollow structure. The nylon roller (11) is sleeved on the main shaft (6) and is rotatably connected to the main shaft (6) through the bearing (9).

2. The device for separating the coil windings of a large power transformer according to claim 1, characterized in that: Nylon plates (4) are respectively glued to the card plate (3) and the base plate (1) that constitute the U-shaped card slot (12).

3. A device for separating coil-wound conductors of a large power transformer according to claim 2, characterized in that: The base plate (1) that constitutes the U-shaped card slot (12) is provided with a slot (13).

4. A device for separating the coil windings of a large power transformer according to claim 1, characterized in that: A retaining ring (10) is provided between the nylon roller (11) and the main shaft (6).

5. A device for separating the coil windings of a large power transformer according to claim 1, characterized in that: The U-shaped slot (12) is provided with a cable tray beam (15) and is fixed by fastening bolts (2) and hexagonal nuts (5). The lower end of the cable tray beam (15) is provided with a cable tray (14).

6. A method of using a coil winding separator for a large power transformer, characterized in that: Follow these steps: Step 1: Fix the crossbeam (15) of the cable tray into the U-shaped slot (12) formed between the card plate (3) and the base plate (1) using fastening bolts (2) and hexagonal nuts (5); Step 2: Place the wire support frame (14) between the vertical winding machine (16) and the wire tensioning device (17); Step 3: Adjust the cross position of the winding wire (18) so that it is located on the tension side of the vertical winding machine (16), separate the winding wire (18) and put it on the nylon roller (11); Step 4: Begin the coil winding process.

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