A coil fixing structure for dry-type transformer transportation

Abstract

The utility model relates to a kind of coil fixing structure for dry-type transformer transportation, including the coil cushion block between the coil of adjacent body coil, and the coil cushion block corresponding of body coil front and back side is connected by tensioning screw rod;The coil cushion block of body coil upper end is connected with the upper clamp piece of transformer by upper clamp piece pull rope, and the coil cushion block of body coil upper and lower ends is connected with corresponding pad block pull rope, while the coil cushion block of body coil lower end is bound together with body coil by pad block binding rope binding.The utility model utilizes coil cushion block to ensure the reliable fixing of each body coil when transformer is transported, and simple structure, easy to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to the field of transformer transportation, specifically a coil fixing structure for transporting dry-type transformers. Background Technology

[0002] A dry-type transformer is a type of transformer whose core and windings are not immersed in insulating oil. It relies on solid insulating materials (such as epoxy resin, insulating paper, insulating varnish, fiberglass, etc.) to ensure electrical insulation between windings and between windings and ground (core). The core coils of a dry-type transformer include low-voltage coils and high-voltage coils wound on the core columns.

[0003] During long-distance transportation, especially in cold weather, dry-type transformers are susceptible to damage from snow and ice accumulation on the road, leading to increased vibration. This can cause displacement or even collisions of the outermost high-voltage coils within the transformer body. Displacement of the high-voltage coils results in uneven spacing between the high- and low-voltage coils, increasing the risk of electrical breakdown and short circuits in areas with smaller gaps. Furthermore, impacts to the high-voltage coils can cause cracks or breaks in the epoxy resin insulation, reducing its insulation performance. Decreased insulation can lead to partial discharges within the transformer, and long-term accumulation of these discharges can cause insulation breakdown. Utility Model Content

[0004] The purpose of this utility model is to provide a coil fixing structure for transporting dry-type transformers. It uses coil pads to ensure reliable fixing of each coil in the transformer body during transportation. The structure is simple and easy to assemble and disassemble.

[0005] The objective of this utility model is achieved through the following technical solution: A coil fixing structure for transporting a dry-type transformer includes coil pads disposed between adjacent transformer coils, and coil pads on the front and rear sides of the transformer coils are connected by tension screws; the coil pad at the upper end of the transformer coil is connected to the upper clamp of the transformer by a pull rope of the upper clamp, and the coil pads at the upper and lower ends of the transformer coil are connected by corresponding pad pull ropes, while the coil pad at the lower end of the transformer coil is bound together with the transformer coil by pad binding ropes.

[0006] The coil pad has arc-shaped coil mating surfaces on both sides, and the surface of the coil mating surfaces is provided with flexible pads that are in close contact with the coil body.

[0007] The coil pad has a through hole in the middle for the tensioning screw to pass through, and the tensioning screw has locking nuts at both ends.

[0008] A flexible coil plate is provided between the pad binding rope and the lower outer surface of the coil body.

[0009] The advantages and positive effects of this utility model are as follows: 1. This utility model limits the displacement of the transformer coils by embedding coil pads on both sides of the gap between adjacent transformer coils, thereby ensuring the reliable fixation of each transformer coil during transformer transportation.

[0010] 2. This utility model uses a tensioning screw to tighten the coil pads corresponding to the front and rear sides of the coil body, and then uses clamping ropes, pad ropes, and pad binding ropes to fix the position of each coil pad. The entire installation structure is simple and easy to assemble and disassemble.

[0011] 3. The coil mating surface of the coil pad of this utility model is attached with a flexible pad, and the flexible pad is in close contact with the transformer body winding. At the same time, a coil flexible plate is also provided between the pad binding rope and the transformer body winding. The above measures can avoid damage to the outer surface of the transformer body winding, and also facilitate installation before transformer transportation and disassembly after transportation. Attached Figure Description

[0012] Figure 1 This is a front view of the utility model in use. Figure 2 This is a top view of the utility model in use. Figure 3 for Figure 1 Front view of the center coil pad block. Figure 4 for Figure 3 Top view of the center coil pad.

[0013] Among them, 1 is the coil body, 2 is the coil pad, 201 is the tensioning screw, 202 is the flexible pad, 203 is the through hole, 204 is the coil mating surface, 3 is the coil flexible plate, 401 is the upper clamping rope, 402 is the pad pulling rope, 403 is the pad binding rope, and 5 is the upper clamping component. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] like Figure 1 As shown, this utility model includes a coil pad 2 disposed between adjacent coils 1 of the device body, and as... Figure 2 As shown, the coil pads 2 on the front and rear sides of the coil 1 are connected by tension screws 201, thereby limiting the displacement of the coil 1; Figure 1As shown, the coil pad 2 at the upper end of the transformer coil 1 is connected to the upper clamp 5 of the transformer via the upper clamp pull rope 401. The coil pads 2 at the upper and lower ends of the transformer coil 1 are connected via the pad pull rope 402. In this way, the present invention can limit the height position of the upper coil pad 2 of the transformer coil 1 via the upper clamp pull rope 401, and further limit the height position of the lower coil pad 2 of the transformer coil 1 via the pad pull rope 402. At the same time, the coil pad 2 at the lower end of the transformer coil 1 is bound together with the transformer coil 1 via the pad binding rope 403, thereby further preventing the coil pad 2 or the transformer coil 1 from moving.

[0016] like Figures 3-4 As shown, in this embodiment, the coil pad 2 has arc-shaped coil mating surfaces 204 on both sides, and a flexible pad 202 is attached to the surface of the coil mating surfaces 204. The flexible pad 202 is in close contact with the coil body coil 1. The coil pad 2 has a through hole 203 in the middle for the tensioning screw 201 to pass through. In addition, both ends of the tensioning screw 201 are provided with locking nuts. When the coil pads 2 are embedded in both the front and rear sides of the gap between adjacent coil bodies 1, the operator can tighten the coil pads 2 on both sides by tightening the locking nut on either side to ensure that the coil pads 2 are fully in contact with the high-voltage coil on the outside of the coil body coil 1, thereby ensuring reliable positioning of the coil body coil 1. In this embodiment, the flexible pad 202 is made of silicone rubber.

[0017] like Figure 1 As shown, in this embodiment, a flexible coil plate 3 is provided between the pad binding rope 403 and the lower outer surface of the coil 1. The flexible coil plate 3 is bound by the pad binding rope 403, which can prevent the pad binding rope 403 from damaging the coil 1. In this embodiment, the flexible coil plate 3 is also made of silicone rubber.

[0018] The working principle of this utility model is as follows: like Figures 1-2As shown, in use, this utility model limits the displacement of the transformer coil 1 by embedding coil pads 2 on both sides of the gap between adjacent transformer coils 1. Simultaneously, the upper end of the upper clamping rope 401 is bound to the upper clamping member 5, and the lower end is bound to the coil pad 2 at the upper end of the transformer coil 1, thus limiting the height of the coil pad 2 at the upper end of the transformer coil 1. The upper end of the pad rope 402 is bound to the upper coil pad 2 at the upper end of the transformer coil 1, and the lower end is bound to the coil pad 2 at the lower end of the transformer coil 1, further limiting the height of the coil pad 2 at the lower end of the transformer coil 1. Finally, the coil pad 2 at the lower end of the transformer coil 1, together with the transformer coil 1, is bound together by the pad binding rope 403, thus completing the final fixation of each coil pad 2. Then, the entire transformer exterior undergoes other limiting packaging required for transportation. This utility model, through the above-mentioned fixing structure, ensures that the individual transformer coils 1 will not shift during transportation, and also facilitates the installation of this utility model before transformer transportation and its removal after transportation.

[0019] Other examples Figure 1 and Figures 3-4 As shown, this invention features a flexible pad 202 attached to the coil mating surface 204 of the coil pad 2, with the flexible pad 202 in close contact with the transformer coil 1. Simultaneously, a flexible coil plate 3 is provided between the pad binding rope 403 and the lower outer surface of the transformer coil 1. This invention, through the flexible pad 202 and the flexible coil plate 3, prevents damage to the outer surface of the transformer coil 1 and facilitates installation before and removal after transformer transportation.

Claims

1. A coil fixing structure for transporting a dry-type transformer, characterized in that: It includes coil pads (2) located between adjacent transformer coils (1), and the corresponding coil pads (2) on the front and rear sides of the transformer coil (1) are connected by tension screws (201); the coil pads (2) at the upper end of the transformer coil (1) are connected to the upper clamp (5) of the transformer by the upper clamp pull rope (401), the coil pads (2) at the upper and lower ends of the transformer coil (1) are connected by pad pull ropes (402), and the coil pads (2) at the lower end of the transformer coil (1) are bound together with the transformer coil (1) by pad binding ropes (403).

2. The coil fixing structure for transporting dry-type transformers according to claim 1, characterized in that: The coil pad (2) has an arc-shaped coil mating surface (204) on both sides, and the surface of the coil mating surface (204) is provided with a flexible pad (202) that is in close contact with the coil body (1).

3. The coil fixing structure for transporting dry-type transformers according to claim 1, characterized in that: The coil pad (2) has a through hole (203) in the middle for the tensioning screw (201) to pass through, and the tensioning screw (201) has locking nuts at both ends.

4. The coil fixing structure for transporting dry-type transformers according to claim 1, characterized in that: A coil flexible plate (3) is provided between the pad binding rope (403) and the lower outer surface of the coil (1) of the device body.

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