A type of fiber-impregnated capacitor transformer bushing

Abstract

This utility model discloses a resin-impregnated fiber capacitive transformer bushing, belonging to the technical field of transformer accessories. It includes a core; a resin-impregnated fiber winding layer wound around the core; a creeper skirt fitted onto the resin-impregnated fiber winding layer; a first flange assembly abutting one end of the creeper skirt; the first flange assembly includes a first flange, a rotating disk, and a second flange; the first flange has a first hole, and the rotating disk has a second hole. The rotating disk can rotate between a first angle and a second angle. At the first angle, the first hole and the second hole are connected; at the second angle, the first hole and the second hole are offset; the second flange assembly abutting the other end of the creeper skirt. When the rotating disk of this utility model rotates to the first angle, the first hole and the second hole are connected, allowing for convenient and intuitive detection of the performance and condition of the resin-impregnated fiber winding layer. This enables accurate assessment of potential damage or fatigue in the transformer bushing, preventing accidents and ensuring production safety.

Description

Technical Field

[0001] This utility model relates to the technical field of transformer accessories, specifically to a resin-impregnated fiber capacitor transformer bushing. Background Technology

[0002] Impregnated fiber is a composite material used for reinforcement and protection. It is usually made by impregnating fibers such as glass fiber or carbon fiber with epoxy resin. The fibers and epoxy resin are fully combined to form a strong composite structure. The overall structure is lighter and has excellent mechanical properties.

[0003] Transformer bushings are the main insulation devices outside the transformer tank, used to lead the high and low voltage leads from inside the transformer to the outside of the tank, and to insulate between the leads, between the leads and the transformer casing, and between the leads and the ground. Transformer bushings also serve to fix the leads. Capacitor-type transformer bushings are mainly used in high voltage transformers above 100kV.

[0004] Transformer bushings often operate in harsh environments. If the performance of the internal materials of transformer bushings can be tested during use, potential damage or fatigue can be detected in time, which can effectively prevent accidents and ensure safety. However, existing transformer bushings are usually covered with a hard insulating shell, making it difficult to test their internal condition.

[0005] Therefore, developing and designing a resin-impregnated fiber capacitive transformer bushing that can easily detect the state of internal materials, has a simple structure, and is easy to operate is an urgent problem to be solved at this stage. Summary of the Invention

[0006] To address the problems existing in the prior art, this utility model provides a resin-impregnated fiber capacitive transformer bushing. A rotatable rotating disk is provided between the first flange and the second flange. When the rotating disk rotates to a first angle, the first hole and the second hole are connected, which can conveniently and intuitively detect the performance and condition of the resin-impregnated fiber winding layer. This allows for accurate assessment of whether the transformer bushing has potential damage or fatigue, effectively preventing accidents and ensuring production safety. The structure is simple and the operation is convenient.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A fiber-impregnated capacitor transformer bushing, comprising:

[0009] Core;

[0010] A resin-impregnated fiber winding layer is wound around the core;

[0011] A climbing umbrella skirt, wherein the climbing umbrella skirt is fitted onto the impregnated fiber winding layer;

[0012] A first flange assembly is fitted onto the impregnated fiber winding layer and abuts against one end of the climbing skirt. The first flange assembly includes a first flange, a rotating disk, and a second flange distributed along a direction away from the climbing skirt. The first flange has a first hole, one end of which is located at the impregnated fiber winding layer. The rotating disk has a second hole and is rotatable around the axis of the core between a first angle and a second angle. At the first angle, the first hole and the second hole are in communication; at the second angle, the first hole and the second hole are offset, and the rotating disk blocks the first hole.

[0013] The second flange assembly is sleeved on the impregnated fiber winding layer and abuts against the other end of the climbing skirt.

[0014] As a preferred technical solution, the two sides of the rotating disk abut against the first flange and the second flange respectively, and the first flange abuts against the climbing umbrella skirt.

[0015] As a preferred technical solution, two first sealing rings are provided between the first flange and the rotating disk, and the connection between the first hole and the second hole is located between the two first sealing rings.

[0016] As a preferred technical solution, a second sealing ring is provided between the second flange and the rotating disk.

[0017] As a preferred technical solution, the rotating disk is provided with a plurality of rotating rods, and the first flange is provided with an arc-shaped hole at the position corresponding to the rotating rod, through which the rotating rod passes.

[0018] As a preferred technical solution, when the first hole and the second hole are connected, the axes of the first hole and the second hole are collinear;

[0019] And / or, the angle between the axis of the first hole and the axis of the core is set to 30-60°.

[0020] As a preferred technical solution, the first hole is filled with an insulating block.

[0021] As a preferred technical solution, the impregnated fiber winding layer includes multiple winding sub-layers, wherein the winding sub-layers are configured with the same or different impregnated fiber structures.

[0022] As a preferred technical solution, the climbing umbrella skirt is made of silicone rubber or ceramic material.

[0023] As a preferred technical solution, the second flange group includes a third flange and a fourth flange distributed in a direction away from the climbing skirt, the third flange abutting against the climbing skirt and the fourth flange respectively, and the third flange and the fourth flange being connected by bolts.

[0024] The beneficial effects of this utility model are as follows:

[0025] 1. This utility model has a rotatable rotating disk between the first flange and the second flange. When the rotating disk rotates to the first angle, the first hole and the second hole are connected, which can conveniently and intuitively detect the performance and condition of the resin-impregnated fiber winding layer, and thus accurately assess whether there is potential damage or fatigue in the transformer bushing, effectively preventing accidents and ensuring production safety. When the rotating disk rotates to the second angle, it can effectively seal the first hole to ensure insulation performance. The structure is simple and the operation is convenient.

[0026] 2. This utility model allows for convenient rotation of the rotating disk via a rotating rod passing through an arc-shaped hole, and the arc-shaped hole and rotating rod also limit the rotation of the disk; at the same time, the first and second sealing rings effectively ensure sealing performance and improve service life. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the adhesive-impregnated fiber capacitor transformer bushing of this utility model;

[0028] Figure 2 for Figure 1 Enlarged view of region A in the middle;

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the first flange in the diagram;

[0030] Figure 4 for Figure 1 A schematic diagram of the rotating disk in the diagram.

[0031] In the figure: 1-core, 2-impregnated fiber winding layer, 3-climbing umbrella skirt, 41-first flange, 411-first hole, 412-arc-shaped hole, 42-rotating disk, 421-second hole, 422-rotating rod, 43-second flange, 44-first sealing ring, 45-second sealing ring, 51-third flange, 52-fourth flange. Detailed Implementation

[0032] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0033] Please refer to Figures 1-4This is an embodiment of a resin-impregnated fiber capacitor transformer bushing according to the present invention, comprising:

[0034] Core 1;

[0035] Impregnated fiber winding layer 2 is wound around core 1;

[0036] The climbing umbrella skirt 3 is mounted on the resin-impregnated fiber winding layer 2;

[0037] The first flange assembly is fitted onto the impregnated fiber winding layer 2 and abuts against one end of the climbing skirt 3. The first flange assembly includes a first flange 41, a rotating disk 42, and a second flange 43 distributed in a direction away from the climbing skirt. The first flange 41 has a first hole 411, one end of which is located at the impregnated fiber winding layer 2. The rotating disk 42 has a second hole 421. The rotating disk 42 can rotate around the axis of the core 1 between a first angle and a second angle. At the first angle, the first hole 411 and the second hole 421 are connected, which allows for convenient and intuitive detection of the performance and state of the impregnated fiber winding layer 2. At the second angle, the first hole 411 and the second hole 421 are offset, and the rotating disk 42 blocks the first hole 411 to ensure insulation performance.

[0038] The second flange assembly is fitted onto the adhesive-impregnated fiber winding layer 2 and abuts against the other end of the climbing skirt 3. The first flange assembly and the second flange assembly position and fix the climbing skirt 3.

[0039] It should be noted that, through the connected first hole 411 and second hole 421, it is possible to observe whether there is any damage to the impregnated fiber winding layer 2, to measure whether there are any problems with partial discharge and current leakage at the impregnated fiber winding layer, and to measure the temperature and humidity at the impregnated fiber winding layer. All of the above parameters can be used to evaluate whether there is any potential damage or fatigue in the impregnated fiber winding layer 2 of the transformer bushing.

[0040] For details, please refer to Figure 1 and Figure 2 The two sides of the rotating disk 42 abut against the first flange 41 and the second flange 43 respectively. The first flange 41 abuts against the climbing skirt 3 to ensure sealing and positioning effects.

[0041] In this embodiment, please refer to Figure 1 and Figure 2 Two first sealing rings 44 are provided between the first flange 41 and the rotating disk 42. The connection between the first hole 411 and the second hole 421 is located between the two first sealing rings 44 to ensure the sealing between the first flange 41 and the rotating disk 42.

[0042] Further, please refer to Figure 1 and Figure 2A second sealing ring 45 is provided between the second flange 43 and the rotating disk 42 to ensure the sealing between the second flange 43 and the rotating disk 42.

[0043] In this embodiment, please refer to Figures 1-4 The rotating disk 42 is provided with two rotating rods 422. The first flange 41 is provided with an arc-shaped hole 412 at the position corresponding to the rotating rod 422. The rotating rod 422 passes through the arc-shaped hole 412, and the rotating disk 422 can be driven to rotate more conveniently by rotating rod 422. Furthermore, the arc-shaped hole 412 should be clearance-fitted with the rotating rod 422, which has the function of limiting the rotation and angle of the rotating disk 42. In other embodiments, the number of rotating rods 422 can also be set to other values, based on the requirement of being able to easily rotate the rotating disk 42.

[0044] It should be noted that when the first hole 411 and the second hole 421 are connected, the axes of the first hole 411 and the second hole 421 should be collinear to facilitate the detection and observation of the adhesive-impregnated fiber winding layer 2.

[0045] Specifically, the angle between the axis of the first hole 411 and the axis of the core 1 is preferably set to 30-60°.

[0046] Furthermore, when the first hole 411 is sealed, an insulating block can be filled inside the first hole 411 to ensure the insulation effect; when the first hole 411 is connected to the second hole 421, the insulating block can be removed so that the adhesive-impregnated fiber winding layer 2 can be tested.

[0047] In this embodiment, please refer to Figure 1 and Figure 2 The second flange group includes a third flange 51 and a fourth flange 52 distributed in a direction away from the climbing skirt 3. The third flange 51 abuts against the climbing skirt 3 and the fourth flange 52 respectively. The third flange 51 and the fourth flange 52 are connected by bolts, which can ensure the fixing effect of the climbing skirt 3.

[0048] For any further explanation, please refer to [link / reference]. Figure 1 and Figure 2 The impregnated fiber winding layer 2 includes multiple winding sub-layers, which can be configured with the same or different impregnated fiber structures. Correspondingly, the climbing umbrella skirt 3 is preferably made of silicone rubber or ceramic material to ensure the insulation effect.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fiber-impregnated capacitor-type transformer bushing, characterized in that it comprises: Core (1); Impregnated fiber winding layer (2), the impregnated fiber winding layer (2) is wound on the core (1); A climbing umbrella skirt (3) is fitted onto the adhesive-impregnated fiber winding layer (2); The first flange assembly is sleeved on the impregnated fiber winding layer (2) and abuts against one end of the climbing skirt (3); the first flange assembly includes a first flange (41), a rotating disk (42), and a second flange (43) distributed in a direction away from the climbing skirt (3); the first flange (41) is provided with a first hole (411), one end of the first hole (411) is located at the impregnated fiber winding layer (2), the rotating disk (42) is provided with a second hole (421), the rotating disk (42) is able to rotate around the axis of the core (1) between a first angle and a second angle, at the first angle, the first hole (411) and the second hole (421) are connected; at the second angle, the first hole (411) and the second hole (421) are offset, and the rotating disk (42) blocks the first hole (411); The second flange assembly is sleeved on the adhesive-impregnated fiber winding layer (2) and abuts against the other end of the climbing umbrella skirt (3).

2. A fibre impregnated capacitor type transformer bushing according to claim 1, characterised in that The two sides of the rotating disk (42) abut against the first flange (41) and the second flange (43) respectively, and the first flange (41) abuts against the climbing umbrella skirt (3).

3. A fibre impregnated capacitor bushing according to claim 2, characterised in that Two first sealing rings (44) are provided between the first flange (41) and the rotating disk (42), and the connection between the first hole (411) and the second hole (421) is located between the two first sealing rings (44).

4. The resin-impregnated fiber capacitor transformer bushing according to claim 2, characterized in that, A second sealing ring (45) is provided between the second flange (43) and the rotating disk (42).

5. A resin-impregnated fiber capacitor transformer bushing according to claim 2, characterized in that, The rotating disk (42) is provided with a plurality of rotating rods (422), and the first flange (41) is provided with an arc-shaped hole (412) at the position corresponding to the rotating rod (422), and the rotating rod (422) passes through the arc-shaped hole (412).

6. The resin-impregnated fiber capacitor transformer bushing according to claim 1, characterized in that, When the first hole (411) is connected to the second hole (421), the axes of the first hole (411) and the second hole (421) are collinear; And / or, the angle between the axis of the first hole (411) and the axis of the core (1) is set to 30-60°.

7. The resin-impregnated fiber capacitor transformer bushing according to claim 1, characterized in that, The first hole (411) is filled with an insulating block.

8. A resin-impregnated fiber capacitor transformer bushing according to claim 1, characterized in that, The impregnated fiber winding layer (2) includes multiple winding sub-layers, which are configured with the same or different impregnated fiber structures.

9. A resin-impregnated fiber capacitor transformer bushing according to claim 1, characterized in that, The climbing umbrella skirt (3) is made of silicone rubber or ceramic material.

10. A resin-impregnated fiber capacitor transformer bushing according to claim 1, characterized in that, The second flange group includes a third flange (51) and a fourth flange (52) distributed in a direction away from the climbing skirt (3). The third flange (51) abuts against the climbing skirt (3) and the fourth flange (52) respectively. The third flange (51) and the fourth flange (52) are connected by bolts.

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