Buffered anti-seismic high-voltage power transformer bushing

Abstract

This utility model discloses a buffer-type shock-resistant high-voltage power transformer bushing, belonging to the technical field of power transformer bushings. The buffer-type shock-resistant high-voltage power transformer bushing includes a power transformer body and connectors. Multiple connectors are installed at the top of the power transformer body, and bushings are snapped into the interior of each connector. A buffer assembly is installed inside the bushing, and a protective component is installed on the outer surface of the buffer assembly. Through the synergistic action of a buffer rod, elastic rod, piston plate, and piston cylinder, it can effectively absorb and disperse external vibration energy. The damper and buffer plate can dissipate vibration energy, reducing the impact on the bushing and transformer. Simultaneously, a wave spring sleeve helps the buffer rod and insulator return to their original positions, reducing residual vibration and ensuring the normal operation of the power transformer. The cooperation of silicone rubber pads, epoxy resin pads, and insulating pads not only enhances the electrical isolation effect but also improves the overall safety and stability.

Description

Technical Field

[0001] This utility model relates to the field of power transformer bushing technology, and more specifically, to a buffer-type shock-resistant high-voltage power transformer bushing. Background Technology

[0002] A high-voltage power transformer is an electrical device used to raise or lower voltage levels. It works by electromagnetic induction, converting one voltage level to another to adapt to power transmission needs over different distances or to meet different power requirements of users. Its bushing is a key component used to safely lead the high-voltage conductors inside the power transformer to the external circuit. It not only needs to have good electrical insulation performance, but also sufficient mechanical strength to withstand various stresses during installation and operation.

[0003] When using existing high-voltage power transformer bushings, the bushing is usually carefully inserted into a pre-drilled hole at the top of the transformer tank, and then the bushing is firmly fixed to the transformer tank using matching flanges and bolts. This allows it to connect to the high-voltage winding inside the transformer through the conductive rod inside the bushing, ensuring a safe and reliable connection between the high-voltage power transformer bushing and the transformer, thereby guaranteeing the stable operation of the entire power system.

[0004] In practical use, the vibrations generated by the power transformer during transportation, external collisions, and high-speed operation may be transmitted to the bushing through the joints, which can easily lead to damage to the equipment and bushing and affect its normal operation. Therefore, a buffer-type shock-resistant high-voltage power transformer bushing is proposed. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a buffer-type shock-resistant high-voltage power transformer bushing. Through the synergistic action of the buffer rod, elastic rod, piston plate, and piston cylinder, it can effectively absorb and disperse external vibration energy. Furthermore, the damper and buffer plate can dissipate vibration energy, reducing the impact on the bushing and transformer. At the same time, the wave spring sleeve can help the buffer rod and insulator return to their original positions, reducing residual vibration.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A buffer-type shock-resistant high-voltage power transformer bushing includes a power transformer body and connectors. Multiple connectors are installed at the top of the power transformer body, and a bushing is snapped into the interior of each connector. A buffer assembly is installed inside the bushing, and a protective component is installed on the outer surface of the buffer assembly. The buffer assembly includes multiple insulators 1 and 2 installed on the outer surface of the bushing. Multiple buffer rods are fixedly connected to the upper surface of the insulator 1, and multiple piston cylinders are fixedly connected inside the insulator 2. A damper is fixedly connected inside each piston cylinder. The protective component includes a silicone rubber pad fixedly connected inside the insulator 1, an epoxy resin pad fixedly connected to the outer surface of the silicone rubber pad, and polyurethane foam filling the space between the inner cavity of the insulator 2 and the piston cylinder.

[0010] Furthermore, one end of the buffer rod is inserted into the interior of the upper insulator two and connected to a piston plate. The outer surface of the piston plate is slidably connected to the inner cavity of the piston cylinder. The insulator one and the insulator two are connected in a spaced-apart manner.

[0011] Furthermore, a wave spring is sleeved and connected to the outer surface of the damper. One end of the wave spring is connected to the bottom wall of the inner cavity of the piston cylinder, and the other end is connected to a buffer plate.

[0012] Furthermore, a protective pad is fixedly connected to the outer surface of the buffer plate, and one end of the damper is connected to the buffer plate.

[0013] Furthermore, insulating pads are fixedly connected to the outer surfaces of both insulator one and insulator two. The insulating pads are made of insulating materials, the silicone rubber pads are made of silicone rubber materials, the epoxy resin pads are made of epoxy resin materials, and the polyurethane foams are made of polyurethane materials.

[0014] Furthermore, the outer surface of the sleeve is provided with multiple slide rails, the first insulator is slidably connected to the inside of the slide rails, multiple elastic rods are arranged in a ring between the first insulator and the slide rails, and the second insulator is connected to the outer surface of the sleeve.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) This solution can effectively absorb and disperse external vibration energy through the synergistic effect of buffer rod, elastic rod, piston plate and piston cylinder, and can consume vibration energy through damper and buffer plate, reducing the impact on bushing and transformer. At the same time, the wave spring sleeve can help the buffer rod and insulator return to their original position, reduce residual vibration, reduce the impact on bushing and transformer, and ensure the normal operation of power transformer.

[0018] (2) This solution enhances the electrical isolation effect and improves the overall safety and stability by combining silicone rubber pads, epoxy resin pads and insulating pads. At the same time, it utilizes the good thermal conductivity of silicone rubber and the lightweight properties of polyurethane foam to ensure good buffering and shock absorption while avoiding heat accumulation that could lead to excessively high equipment temperatures. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial structural breakdown diagram of the present invention.

[0021] Figure 3 This is a partial structural cross-sectional view of the buffer assembly of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a partial structural exploded view of the buffer component of this utility model.

[0024] Explanation of the labels in the diagram:

[0025] 1. Power transformer body; 101. Connector; 102. Bushing; 2. Buffer assembly; 201. Insulator one; 202. Insulator two; 203. Buffer rod; 204. Piston plate; 205. Piston cylinder; 206. Damper; 207. Wave spring; 208. Buffer plate; 209. Slide rail; 210. Elastic rod; 3. Protective assembly; 301. Epoxy resin pad; 302. Silicone rubber pad; 303. Insulating pad; 304. Polyurethane foam. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1

[0030] Reference Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a buffered and shock-resistant high-voltage power transformer bushing, including a power transformer body 1 and a connector 101. Multiple connectors 101 are installed at the top of the power transformer body 1. A bushing 102 is snapped into the inside of the connector 101. A buffer assembly 2 is installed inside the bushing 102.

[0031] Specifically, the buffer assembly 2 includes multiple insulators 1 201 and 2 202 mounted on the outer surface of the sleeve 102. Multiple buffer rods 203 are fixedly connected to the upper surface of insulator 1 201. Multiple piston cylinders 205 are fixedly connected inside insulator 2 202. A damper 206 is fixedly connected inside the piston cylinder 205. One end of each buffer rod 203 is inserted into the interior of the upper insulator 2 202 and connected to a piston plate 204. The outer surface of the piston plate 204 is slidably connected to the inner cavity of the piston cylinder 205. Insulators 1 201 and 2 202 are connected separately, providing damping... A wave spring 207 is sleeved and connected to the outer surface of the damper 206. One end of the wave spring 207 is connected to the bottom wall of the inner cavity of the piston cylinder 205, and the other end is connected to the buffer plate 208. Multiple slide rails 209 are opened on the outer surface of the sleeve 102. The insulator 1 201 is slidably connected to the inside of the slide rail 209. Multiple elastic rods 210 are arranged in a ring between the insulator 1 201 and the slide rail 209. The insulator 2 202 is connected to the outer surface of the sleeve 102. A protective pad is fixedly connected to the outer surface of the buffer plate 208. One end of the damper 206 is connected to the buffer plate 208.

[0032] Furthermore, when the power transformer body 1 vibrates due to transportation, external collisions, or high-speed internal operation, the vibration is transmitted to the bushing 102 through the joint 101, causing the bushing 102 to vibrate. This vibration drives the insulator 201 installed on the outside of the bushing 102 to move upward along the surface of the slide rail 209. When the insulator 201 moves, it drives multiple buffer rods 203 to push the piston plate 204 to move along the inner cavity of the piston cylinder 205. As the piston plate 204 moves, it pushes the gas in the piston cylinder 205 inward. When the piston plate 204 moves to a certain position and comes into contact with the buffer plate 208, the vibration generated can be relieved by the cooperation of the damper 206 and the wave spring 207, and the piston plate 204 can drive the insulator 201 to reset through the buffer rods 203.

[0033] Example 2

[0034] Reference Figures 1-5 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, and the outer surface of the buffer component 2 is equipped with a protective component 3.

[0035] Specifically, the protective component 3 includes a silicone rubber pad 302 fixedly connected inside the insulator 1 201, an epoxy resin pad 301 fixedly connected to the outer surface of the silicone rubber pad 302, polyurethane foam 304 filling the space between the inner cavity of the insulator 202 and the piston cylinder 205, and insulating pads 303 fixedly connected to the outer surfaces of both the insulator 1 201 and the insulator 2 202. The insulating pads 303 are made of insulating material, the silicone rubber pad 302 is made of silicone rubber material, the epoxy resin pad 301 is made of epoxy resin material, and the polyurethane foam 304 is made of polyurethane material.

[0036] Furthermore, the polyurethane foam 304 filling the second insulator 202 helps dissipate heat due to its lightweight properties, while the insulating pads 303 on the surfaces of the first insulator 201 and the second insulator 202 provide necessary electrical isolation. The silicone rubber pad 302 inside the first insulator 201 provides additional cushioning and helps dissipate heat, and the epoxy resin pad 301 further enhances the overall insulation.

[0037] Working principle: During use, the bushing 102 is carefully snapped into the interior of each connector 101, ensuring a tight and secure connection between the bushing 102 and the connector 101. When the power transformer body 1 vibrates due to transportation, external impact, or high-speed internal operation, the vibration is transmitted through the connector 101 to the bushing 102, causing the bushing 102 to vibrate. This vibration drives the insulator 201, installed outside the bushing 102, to move upwards along the surface of the slide rail 209. As the insulator 201 moves, it drives multiple buffer rods 203 to push the piston plate 204 along the inner cavity of the piston cylinder 205. With the movement of the piston plate 204, it pushes the gas inside the piston cylinder 205 inwards, which helps to increase the air cushion effect and further absorb vibration energy. When the piston plate 204 moves to a certain position and abuts against the buffer plate 208, the damper 206 and the wave spring 207 work together to alleviate the vibration generated and help the piston plate 204 drive the insulator 1 201 to reset via the buffer rod 203. At the same time, the polyurethane foam 304 filled in the insulator 202, due to its lightweight properties, helps to dissipate heat and prevent heat accumulation that could lead to excessively high equipment temperature. Meanwhile, the insulating pads 303 on the surfaces of the insulator 1 201 and the insulator 2 202 provide necessary electrical isolation to prevent current leakage and other electrical faults. The silicone rubber pad 302 inside the insulator 1 201 provides additional cushioning and helps to dissipate heat, and the epoxy resin pad 301 further enhances the overall insulation performance.

[0038] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A buffer-type shock-resistant high-voltage power transformer bushing, comprising a power transformer body (1) and connectors (101), wherein a plurality of connectors (101) are installed at the top end of the power transformer body (1), characterized in that: The connector (101) is fitted with a sleeve (102), a buffer assembly (2) is installed inside the sleeve (102), and a protective assembly (3) is installed on the outer surface of the buffer assembly (2). The buffer assembly (2) includes multiple insulators 1 (201) and insulator 2 (202) installed on the outer surface of the sleeve (102). Multiple buffer rods (203) are fixedly connected to the upper surface of the insulator 1 (201). Multiple piston cylinders (205) are fixedly connected inside the insulator 2 (202). A damper (206) is fixedly connected inside the piston cylinder (205). The protective component (3) includes a silicone rubber pad (302) fixedly connected inside the insulator (201), an epoxy resin pad (301) fixedly connected to the outer surface of the silicone rubber pad (302), and polyurethane foam (304) filling the space between the inner cavity of the insulator (202) and the piston cylinder (205).

2. The buffer-type shock-resistant high-voltage power transformer bushing according to claim 1, characterized in that: One end of the buffer rod (203) is inserted into the interior of the upper insulator (202) and connected to a piston plate (204). The outer surface of the piston plate (204) is slidably connected to the inner cavity of the piston cylinder (205). The insulator (201) and the insulator (202) are connected in a spaced manner.

3. The buffer-type shock-resistant high-voltage power transformer bushing according to claim 1, characterized in that: A wave spring (207) is sleeved and connected to the outer surface of the damper (206). One end of the wave spring (207) is connected to the bottom wall of the inner cavity of the piston cylinder (205), and the other end is connected to a buffer plate (208).

4. A buffer-type shock-resistant high-voltage power transformer bushing according to claim 3, characterized in that: A protective pad is fixedly connected to the outer surface of the buffer plate (208), and one end of the damper (206) is connected to the buffer plate (208).

5. A buffer-type shock-resistant high-voltage power transformer bushing according to claim 1, characterized in that: Insulating pads (303) are fixedly connected to the outer surfaces of both insulator one (201) and insulator two (202). The insulating pads (303) are made of insulating material, the silicone rubber pads (302) are made of silicone rubber material, the epoxy resin pads (301) are made of epoxy resin material, and the polyurethane foam (304) is made of polyurethane material.

6. A buffer-type shock-resistant high-voltage power transformer bushing according to claim 1, characterized in that: The outer surface of the sleeve (102) is provided with multiple slide rails (209), the first insulator (201) is slidably connected to the inside of the slide rail (209), multiple elastic rods (210) are arranged in a ring between the first insulator (201) and the slide rail (209), and the second insulator (202) is connected to the outer surface of the sleeve (102).

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