Transformer electrostatic plate structure

Abstract

This utility model relates to the field of electrostatic plate technology, and in particular to a transformer electrostatic plate structure, including an electrostatic plate with leads disposed inside. An insulating sleeve is inserted and connected to the outer surface of the electrostatic plate. One end of the lead penetrates the outer surface of the electrostatic plate and is inserted and connected inside the insulating sleeve. A connecting assembly is disposed at the bottom of the electrostatic plate. An upper reinforcing assembly is embedded in the upper part of the electrostatic plate, and a lower reinforcing assembly is embedded in the lower part of the electrostatic plate. This transformer electrostatic plate structure, through a sliding connecting assembly, adapts to different winding supports, improving installation flexibility; the "Z"-shaped support arm ensures a reasonable distance between the shielding plate and the winding ends, optimizing the electric field distribution; internal reinforcing ribs enhance overall strength and prevent deformation; the lead layout is reasonable, and grounding is stable, significantly improving the shielding effect and operational safety.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic plate technology, and in particular to a transformer electrostatic plate structure. Background Technology

[0002] In existing transformer structures, uneven electric field distribution at the high-voltage winding ends easily leads to partial discharge, affecting the insulation performance and operational stability of the equipment. Therefore, electrostatic shielding plates are typically installed at the winding ends to improve the electric field distribution. However, traditional electrostatic shielding plate structures often use fixed connections, making it difficult to adapt to winding end supports of different sizes, resulting in poor installation flexibility. Furthermore, the spacing between the shielding plate and the winding is difficult to control, affecting the shielding effect. In addition, some electrostatic shielding plates lack effective internal reinforcement structures, making them prone to deformation during long-term operation, leading to a decrease in shielding performance. Therefore, we propose a transformer electrostatic shielding plate structure. Utility Model Content

[0003] The main objective of this invention is to provide a transformer electrostatic plate structure that can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A transformer electrostatic plate structure includes an electrostatic plate, a lead wire disposed inside the electrostatic plate, an insulating sleeve inserted and connected to the outer surface of the electrostatic plate, one end of the lead wire passing through the outer surface of the electrostatic plate and inserted and connected inside the insulating sleeve, and a connecting assembly disposed at the bottom of the electrostatic plate.

[0005] By adopting the above technical solution, the insulating sleeve is made of high insulation material to ensure good electrical isolation between the lead wire and the electrostatic plate, thereby improving the safety performance and operational reliability of the entire device.

[0006] Preferably, the connecting component includes a slide bar, four slide bars are arranged in a circular array and connected to the bottom of the electrostatic plate, one end of the slide bar is integrally formed with an anti-detachment baffle, and a connecting arm is slidably connected to the slide bar.

[0007] By adopting the above technical solution, the position of the connecting arm on the slide bar can be adjusted to flexibly adapt to the winding end brackets of different diameters, so that the electrostatic plate is always in the best shielding position, thereby improving its versatility and on-site installation efficiency.

[0008] Preferably, the connecting arm has a "Z" shaped structure, and the bottom of the connecting arm has a mounting hole.

[0009] By adopting the above technical solution: the connecting arm has a "Z" shaped structure with a mounting hole at the bottom for fixed connection with the winding end bracket. At the same time, it can form an appropriate gap between the electrostatic plate and the winding end, ensuring the effective performance of electrostatic shielding and avoiding the problem of electric field concentration caused by too close a distance.

[0010] Preferably, an upper reinforcing component is embedded in the upper part of the electrostatic plate, and a lower reinforcing component is embedded in the lower part of the electrostatic plate.

[0011] By adopting the above technical solution—the design of upper and lower reinforcing components—a stable support structure is formed.

[0012] Preferably, the lead is located between the upper reinforcing component and the lower reinforcing component, and does not contact the upper reinforcing component and the lower reinforcing component.

[0013] By adopting the above technical solution, the lead wire is placed between the upper and lower reinforcing components and keeps in a non-contact state with all the reinforcing ribs. This not only ensures the stability of the lead wire inside the electrostatic board, but also avoids displacement or damage caused by mechanical stress. This spatial layout not only improves the protection level of the lead wire, but also further enhances the reliability and service life of the entire electrostatic board structure.

[0014] Preferably, the upper reinforcing component includes an inner reinforcing rib and an outer reinforcing rib, the outer reinforcing rib being sleeved on the outside of the inner reinforcing rib, and the inner and outer reinforcing ribs being coaxially arranged. A plurality of connecting ribs connect the inner and outer reinforcing ribs, and the plurality of connecting ribs are distributed in a ring array.

[0015] Preferably, the structure of the lower reinforcing component is the same as that of the upper reinforcing component, and the connecting ribs on the lower reinforcing component and the connecting ribs on the upper reinforcing component are distributed alternately.

[0016] By adopting the above technical solution, this layout can effectively distribute the force and improve the overall structure's resistance to deformation, making it particularly suitable for environments that may experience mechanical vibration and temperature changes during long-term operation.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. By incorporating a connecting assembly including a slide bar and a slidable connecting arm at the bottom of the electrostatic plate, flexible adaptation to the end supports of windings with different diameters is achieved. The connecting arm can slide on the slide bar and lock in a suitable position, ensuring that the shielding plate is always at the optimal installation angle and distance. Simultaneously, the "Z"-shaped arm design not only facilitates installation but also creates an appropriate gap between the electrostatic plate and the winding end, ensuring effective electrostatic shielding while avoiding electric field concentration problems caused by excessively close proximity. The anti-detachment baffle further guarantees the reliability of the connecting arm during operation. This design significantly improves the versatility of the electrostatic plate structure and the efficiency of on-site installation.

[0018] 2. The electrostatic plate has two layers of reinforcing components inside, with the inner and outer reinforcing ribs connected by a ring-shaped array of connecting ribs in a staggered layout, effectively improving the overall rigidity and deformation resistance of the electrostatic plate. The lead wires are arranged between the two layers of reinforcing components and do not contact the reinforcing ribs, thus receiving physical protection and avoiding the influence of mechanical stress, ensuring the stability of the grounding system. This structural design not only extends the service life of the electrostatic plate but also further optimizes the electric field distribution at the high-voltage winding ends, reduces the risk of partial discharge, and improves the safety and reliability of transformer operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a transformer electrostatic plate structure according to the present invention; Figure 2 This is a schematic diagram of the bottom structure of the electrostatic plate of the transformer electrostatic plate structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the electrostatic plate of a transformer electrostatic plate structure according to this utility model; Figure 4 This is a schematic diagram of the connection structure of the upper reinforcing group of a transformer electrostatic plate structure according to the present invention.

[0020] In the diagram: 1. Static plate; 11. Upper reinforcing assembly; 111. Inner reinforcing rib; 112. Outer reinforcing rib; 113. Connecting rib; 12. Lower reinforcing assembly; 2. Lead wire; 3. Insulating sleeve; 4. Connecting assembly; 41. Sliding bar; 42. Connecting support arm; 421. Mounting hole; 43. Anti-detachment baffle. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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.

[0024] Please see Figures 1-4 This utility model provides a technical solution: A transformer electrostatic plate structure includes an electrostatic plate 1, a lead wire 2 disposed inside the electrostatic plate 1, an insulating sleeve 3 inserted and connected to the outer surface of the electrostatic plate 1, one end of the lead wire 2 passing through the outer surface of the electrostatic plate 1 and inserted and connected inside the insulating sleeve 3, and a connecting component 4 disposed at the bottom of the electrostatic plate 1.

[0025] In this embodiment, the connecting component 4 includes a slide bar 41. Four slide bars 41 are arranged in a circular array and connected to the bottom of the electrostatic plate 1. One end of the slide bar 41 is integrally formed with an anti-detachment baffle 43. A connecting arm 42 is slidably connected to the slide bar 41. The connecting arm 42 has a "Z" shaped structure and a mounting hole 421 is opened at the bottom of the connecting arm 42.

[0026] The above solution achieves flexible adaptation to the end supports of windings with different diameters by setting a connecting assembly 4, including a slide bar 41 and a slidable connecting arm 42, at the bottom of the electrostatic plate 1. The connecting arm 42 can slide on the slide bar 41 and lock in a suitable position, ensuring that the shielding plate is always at the optimal installation angle and distance. Simultaneously, the "Z"-shaped arm design not only facilitates installation but also creates an appropriate gap between the electrostatic plate 1 and the winding end, ensuring the effective functioning of electrostatic shielding and avoiding electric field concentration problems caused by excessively close proximity. The anti-detachment baffle 43 further ensures the reliability of the connecting arm 42 during operation. This design significantly improves the versatility of the electrostatic plate structure and the efficiency of on-site installation.

[0027] In this embodiment, an upper reinforcing component 11 is embedded in the upper part of the electrostatic plate 1, and a lower reinforcing component 12 is embedded in the lower part of the electrostatic plate 1. The lead wire 2 is located between the upper reinforcing component 11 and the lower reinforcing component 12 and does not contact the upper reinforcing component 11 and the lower reinforcing component 12. The upper reinforcing component 11 includes an inner reinforcing rib 111 and an outer reinforcing rib 112. The outer reinforcing rib 112 is sleeved on the outside of the inner reinforcing rib 111, and the inner reinforcing rib 111 and the outer reinforcing rib 112 are coaxially arranged. A plurality of connecting ribs 113 are connected between the inner reinforcing rib 111 and the outer reinforcing rib 112, and the plurality of connecting ribs 113 are arranged in a ring array. The structure of the lower reinforcing component 12 is the same as that of the upper reinforcing component 11, and the connecting ribs 113 on the lower reinforcing component 12 are staggered with the connecting ribs 113 on the upper reinforcing component 11.

[0028] Through the above-described design, the electrostatic plate 1 has two layers of reinforcing components, with the inner and outer reinforcing ribs connected by a ring-shaped array of connecting ribs 113 in a staggered layout, effectively improving the overall rigidity and deformation resistance of the electrostatic plate. The lead wire 2 is positioned between the two reinforcing components and does not contact the reinforcing ribs, thus receiving physical protection and avoiding the influence of mechanical stress, ensuring the stability of the grounding system. This structural design not only extends the service life of the electrostatic plate but also further optimizes the electric field distribution at the high-voltage winding ends, reducing the risk of partial discharge and improving the safety and reliability of transformer operation.

[0029] It should be noted that this utility model is a transformer electrostatic plate structure. In practical applications, through the synergistic effect between the components, it achieves good electric field shielding, structural stability, and installation adaptability. Its working principle is as follows: During use, the electrostatic plate 1, in conjunction with the high-voltage winding end of the transformer, effectively improves the electric field distribution in the area, prevents partial discharge, and thus enhances the overall insulation performance and operational safety of the transformer. The electrostatic plate 1 contains a lead wire 2, one end of which penetrates the outer surface of the electrostatic plate 1 and is inserted into the insulating sleeve 3. This structural design allows the lead wire 2 to achieve electrical connection with the external grounding system through the insulating sleeve 3 while ensuring good conductivity, avoiding the risk of short circuits or breakdowns that may be caused by exposed conductors. The insulating sleeve 3 is made of highly insulating materials, such as ceramic or epoxy resin composite materials, ensuring good electrical isolation between the electrostatic plate 1 and the lead wire 2, further improving the safety and stability of the device. A connecting assembly 4 is provided at the bottom of the electrostatic plate 1 for stable installation on the transformer winding end support. The connecting assembly 4 includes four sliding bars 41 arranged in a circular array. Each sliding bar 41 has an integrally formed anti-detachment baffle 43 at one end, and the other end forms a sliding connection with the connecting arm 42. The connecting arm 42 has a "Z" shaped structure with a mounting hole 421 at its bottom for easy fixed connection with the winding end bracket. By sliding and adjusting the position of the connecting arm 42 on the slide bar 41, it can flexibly adapt to winding end brackets of different diameters, ensuring that the electrostatic plate 1 is always in the optimal shielding position, significantly improving the versatility of the structure and on-site installation efficiency. To further enhance the mechanical strength and deformation resistance of the electrostatic plate 1, an upper reinforcing component 11 and a lower reinforcing component 12 are embedded inside the electrostatic plate 1, respectively. The upper reinforcing component 11 includes an inner reinforcing rib 111 and an outer reinforcing rib 112 arranged coaxially. A stable support frame is formed by connecting multiple connecting ribs 113 arranged in a ring array. The lower reinforcing component 12 has the same structure as the upper reinforcing component 11, and its connecting ribs 113 are staggered with those of the upper reinforcing component 11. This layout not only enhances the rigidity of the overall structure but also effectively disperses the stress and avoids stress concentration, thereby improving the fatigue resistance of the electrostatic plate 1 during long-term operation. In addition, the lead wire 2 is arranged between the upper and lower reinforcing components and remains in a non-contact state with all the reinforcing ribs, which avoids mechanical damage caused by vibration or thermal expansion and ensures the stability of the lead wire 2 inside the electrostatic plate 1. This spatial layout not only improves the protection level of the lead wire 2 but also further extends the service life of the entire electrostatic plate structure.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A transformer electrostatic plate structure, comprising an electrostatic plate (1), characterized in that: The electrostatic plate (1) is provided with a lead wire (2), and an insulating sleeve (3) is inserted and connected to the outer surface of the electrostatic plate (1). One end of the lead wire (2) passes through the outer surface of the electrostatic plate (1) and is inserted and connected to the insulating sleeve (3). A connecting component (4) is provided at the bottom of the electrostatic plate (1). The connecting component (4) includes a slide bar (41), four slide bars (41) are arranged in a ring array and connected to the bottom of the electrostatic plate (1), one end of the slide bar (41) is integrally formed with an anti-detachment baffle (43), and a connecting arm (42) is slidably connected to the slide bar (41).

2. The transformer electrostatic plate structure according to claim 1, characterized in that: The connecting arm (42) has a "Z" shaped structure, and the bottom of the connecting arm (42) is provided with a mounting hole (421).

3. The transformer electrostatic plate structure according to claim 1, characterized in that: An upper reinforcing component (11) is embedded in the upper part of the electrostatic plate (1), and a lower reinforcing component (12) is embedded in the lower part of the electrostatic plate (1).

4. The transformer electrostatic plate structure according to claim 3, characterized in that: The lead wire (2) is located between the upper reinforcing component (11) and the lower reinforcing component (12) and does not contact the upper reinforcing component (11) and the lower reinforcing component (12).

5. The transformer electrostatic plate structure according to claim 4, characterized in that: The upper reinforcing component (11) includes an inner reinforcing rib (111) and an outer reinforcing rib (112). The outer reinforcing rib (112) is sleeved on the outside of the inner reinforcing rib (111), and the inner reinforcing rib (111) and the outer reinforcing rib (112) are coaxially arranged. A plurality of connecting ribs (113) are connected between the inner reinforcing rib (111) and the outer reinforcing rib (112), and the plurality of connecting ribs (113) are distributed in a ring array.

6. The transformer electrostatic plate structure according to claim 5, characterized in that: The structure of the lower reinforcing component (12) is the same as that of the upper reinforcing component (11), and the connecting ribs (113) on the lower reinforcing component (12) and the connecting ribs (113) on the upper reinforcing component (11) are staggered.

Images