A high voltage coil panel structure

Abstract

The utility model discloses a high pressure coil panel structure, including panel and high pressure coil, the front side of high pressure coil is provided with the panel, the top of panel is provided with the incoming line end, the bottom of panel is provided with the outgoing line end, and a plurality of branch tap terminal posts are arranged between the incoming line end and the outgoing line end, the wave structure is arranged between the incoming line end and the branch tap terminal post, the wave structure is also arranged between the branch tap terminal post and the outgoing line end, and the wave structure is used for increasing the creeping distance between the incoming line end and the branch tap terminal post and between the branch tap terminal post and the outgoing line end. The wave structure is prolonged through the path, improves the withstand threshold of the insulation surface to the surface discharge, directly reduces the electric field intensity of the insulation surface per unit length, reduces the probability of electrical fault such as short circuit and insulation breakdown caused by creeping from the root, and solves the problem that the creeping distance of the high pressure coil panel is insufficient under special voltage requirement when using the traditional linear path design, resulting in failure.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage coil technology, specifically a high-voltage coil panel structure. Background Technology

[0002] In numerous fields such as power transmission and conversion, and electrical control, high-voltage coils play an irreplaceable and crucial role as key core components. The coil's faceplate, as a vital part, undertakes multiple critical functions, including supporting the coil, achieving electrical connections, and ensuring insulation performance. The design and manufacturing quality of the faceplate not only affects the overall performance of the high-voltage coil but also has a profound impact on the operational safety and lifespan of electrical equipment.

[0003] Traditional panels have a relatively simple structure, typically employing a planar design, resulting in a small creepage distance. This small creepage distance may meet basic insulation requirements under typical voltage levels and operating environments. However, in situations with stringent coil height requirements or higher voltages, traditional panels, due to their insufficient creepage distance, cannot provide adequate insulation protection within a limited space, making them prone to insulation failures and affecting the normal operation of the equipment. Utility Model Content

[0004] To address the aforementioned shortcomings, this invention proposes a high-voltage coil panel structure. The wave structure extends the path, thereby increasing the tolerance threshold of the insulating surface to surface discharge and directly reducing the electric field strength per unit length of the insulating surface. This fundamentally reduces the probability of electrical faults such as short circuits and insulation breakdown caused by creepage. It also solves the problem that when using a traditional straight-path design, the creepage distance of the high-voltage coil panel is insufficient under special voltage requirements, leading to faults.

[0005] To achieve this objective, the present invention adopts the following technical solution: A high-voltage coil panel structure includes a panel and a high-voltage coil. The panel is provided on the front side of the high-voltage coil. An inlet terminal is provided on the top of the panel, and an outlet terminal is provided on the bottom of the panel. Multiple tap-stop terminals are provided between the inlet terminal and the outlet terminal. A wave structure is provided between the incoming line terminal and the tap stop terminal, and the wave structure is also provided between the tap stop terminal and the outgoing line terminal. The wave structure is used to increase the creepage distance between the incoming line terminal and the tap stop terminal, and between the tap stop terminal and the outgoing line terminal.

[0006] The wave structure includes multiple protrusions arranged vertically, and all of the protrusions are arranged horizontally on the panel.

[0007] The panel is also provided with a groove, the left and right ends of which penetrate the panel, the opening of the groove is oriented forward, and a boss is provided between two adjacent grooves.

[0008] The groove has a first inclined surface on both sides, and the boss has a second inclined surface on both the upper and lower sides. The first inclined surface and the second inclined surface are smoothly connected, and both the first inclined surface and the second inclined surface are inclined from front to back to both sides.

[0009] The front sidewall of the boss and the bottom wall of the groove are both planar structures.

[0010] The front sidewall of the boss and the bottom wall of the groove are both arc-shaped structures.

[0011] The boss and the panel are integrally formed.

[0012] The technical solution of this utility model can include the following beneficial effects: 1. The wave structure extends the path, increases the tolerance threshold of the insulating surface to surface discharge, and directly reduces the electric field strength per unit length of the insulating surface. This reduces the probability of electrical faults such as short circuits and insulation breakdown caused by creepage from the root cause. It solves the problem that the creepage distance of the high-voltage coil panel is insufficient under special voltage requirements when using traditional straight-line path design, which leads to faults.

[0013] 2. The protrusions between adjacent grooves further extend the path of charge movement under the action of the electric field, greatly increasing the creepage distance between the inlet terminal and the tap stop terminal, and between the tap stop terminal and the outlet terminal. This more effectively reduces the risk of flashover and breakdown on the insulation surface, significantly improving the insulation performance of the panel structure, and is especially suitable for high voltage coil applications at higher voltage levels. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a high-voltage line panel structure according to one embodiment of the present invention; Figure 2 This is an enlarged view of the high-voltage line panel structure of one embodiment of this utility model; Figure 3 This is an enlarged view of the high-voltage line panel structure of another embodiment of this utility model; Among them, 1. panel; 2. high voltage coil; 3. wave structure; 31. boss; 32. groove; 33. first inclined surface; 34. second inclined surface; 4. inlet end; 5. outlet end; 6. tap joint terminal. Detailed Implementation

[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0019] The following is combined with Figures 1 to 3 This describes a high-voltage coil panel structure according to an embodiment of the present invention.

[0020] A high-voltage coil panel structure includes a panel 1 and a high-voltage coil 2. The panel 1 is disposed on the front side of the high-voltage coil 2. An inlet terminal 4 is disposed on the top of the panel 1, and an outlet terminal 5 is disposed on the bottom of the panel 1. A plurality of tap-stop terminals 6 are disposed between the inlet terminal 4 and the outlet terminal 5. A wave structure 3 is provided between the incoming terminal 4 and the tap stop terminal 6, and the wave structure 3 is also provided between the tap stop terminal 6 and the outgoing terminal 5. The wave structure 3 is used to increase the creepage distance between the incoming terminal 4 and the tap stop terminal 6, and between the tap stop terminal 6 and the outgoing terminal 5.

[0021] This invention incorporates a wave structure 3 along two critical current paths: the inlet terminal 4 to the tap stop terminal 6 and the outlet terminal 5. Essentially, this wave structure utilizes a bending design along the insulation path on the panel 1 surface to significantly extend the creepage distance between charged components within the limited planar space of the panel 1. According to high-voltage electrical insulation theory, insufficient creepage distance leads to concentrated electric field intensity on the insulation surface, causing surface flashover. The wave structure 3, by extending the path, increases the insulation surface's tolerance threshold to surface discharge, directly reducing the electric field intensity per unit length of insulation surface. This fundamentally reduces the probability of electrical faults such as short circuits and insulation breakdown caused by creepage, solving the problem of insufficient creepage distance on the high-voltage coil panel under special voltage requirements when using traditional straight-path designs.

[0022] The wave structure 3 includes a plurality of protrusions 31 arranged in a vertical direction, and the plurality of protrusions 31 are all arranged horizontally on the panel 1.

[0023] Multiple horizontal protrusions 31 are arranged vertically to form a wave structure 3. This design can increase the creepage distance between the incoming terminal 4 and the tap changer terminal 6, and between the tap changer terminal 6 and the outgoing terminal 5, according to a specific path and pattern. Compared with an irregular wave shape, multiple horizontal protrusions 31 can more accurately control and calculate the increment of creepage distance, ensuring that insulation requirements are met at different voltage levels, and improving the scientific nature and accuracy of insulation design.

[0024] By rationally designing the size and spacing of the bosses 31, the amount of material used can be optimized while meeting the requirements for increased creepage distance and insulation. Compared to using a larger flat plate structure or other complex insulation structures to achieve the same insulation effect, this wave structure 3 can reduce material waste, lower raw material costs, and thus improve the product's economics.

[0025] The panel 1 is also provided with a groove 32, the left and right ends of which penetrate the panel 1. The opening of the groove 32 faces forward, and a boss 31 is provided between two adjacent grooves 32.

[0026] The protrusions 31 between adjacent grooves 32 further extend the path of charge movement under the action of electric field, greatly increasing the creepage distance between the inlet terminal 4 and the tap stop terminal 6, and between the tap stop terminal 6 and the outlet terminal 5. This more effectively reduces the risk of flashover and breakdown on the insulation surface, significantly improving the insulation performance of the panel 1 structure, and is especially suitable for high voltage coil 2 applications with higher voltage levels.

[0027] The combined structure of the groove 32 and the boss 31 can improve the electric field distribution on the surface of panel 1. The groove 32 can guide the electric field lines, making the electric field more evenly distributed on the surface of panel 1 and avoiding excessive concentration of the electric field in some areas. The boss 31 between adjacent grooves 32 plays the role of dispersing the electric field, reducing the intensity of the electric field in specific areas, reducing the probability of electric field distortion phenomena such as corona discharge, and further improving the stability and reliability of the insulation.

[0028] During equipment operation, the high-voltage coil 2 generates heat. The groove 32 structure facilitates air convection in the front-to-back direction of the panel 1. Air can flow more smoothly within the groove 32, carrying away the heat generated by the panel 1 and the high-voltage coil 2, improving heat dissipation efficiency, helping to maintain the equipment operating within a suitable temperature range, and reducing problems such as accelerated insulation aging and equipment performance degradation caused by overheating.

[0029] The groove 32 has a first inclined surface 33 on both sides, and the boss 31 has a second inclined surface 34 on both the upper and lower sides. The first inclined surface 33 and the second inclined surface 34 are smoothly connected, and the first inclined surface 33 and the second inclined surface 34 are inclined from front to back to both sides.

[0030] When calculating the creepage distance, the length of the inclined side of the first inclined surface 33 and the second inclined surface 34 is taken into account. Compared with the vertical sidewall, the inclined surface can increase the actual creepage distance within the limited space of the panel 1, further enhancing the insulation performance of the panel 1, which is especially suitable for high-voltage application scenarios with extremely high insulation requirements.

[0031] The smooth connection between the first inclined surface 33 and the second inclined surface 34 forms a relatively continuous and stable structure. This structure can better disperse stress when the panel 1 is subjected to external forces, avoiding stress concentration in a certain local area, thereby improving the overall structural strength and deformation resistance of the panel 1.

[0032] The front sidewall of the boss 31 and the bottom wall of the groove 32 are both planar structures.

[0033] When installing panel 1 onto high-voltage coil 2 or other equipment, precise positioning and calibration can be performed using the flat surfaces of the front side wall of boss 31 and the bottom wall of groove 32, ensuring accurate and consistent installation. This not only improves installation efficiency but also reduces equipment malfunctions and safety hazards caused by improper installation.

[0034] Machining planar structures is relatively simple, requiring no complex tool paths or special machining processes. In the manufacturing process of panel 1, common milling and grinding methods can easily achieve the machining of planar structures, reducing machining difficulty and cost, and improving production efficiency.

[0035] The front sidewall of the boss 31 and the bottom wall of the groove 32 are both arc-shaped structures.

[0036] In another embodiment, the curved shape of the arc surface increases the path length for current to creep along the surface of panel 1. When calculating the creepage distance, the arc length is taken into account, which further extends the creepage distance within the limited space of panel 1 compared to a planar structure, enhancing the insulation capability of panel 1, and is especially suitable for high-voltage applications with extremely stringent insulation requirements.

[0037] The curved surface has a good buffering effect. When panel 1 is subjected to external impact, the curved surface can evenly distribute the impact force to the surrounding area, reducing local stress concentration and thus reducing the possibility of panel 1 being damaged by impact. Compared with the planar structure, the curved surface structure can better withstand external forces such as vibration and collision, improving the mechanical strength and durability of panel 1.

[0038] The boss 31 and the panel 1 are integrally formed.

[0039] The one-piece molded structure can better disperse these stresses and avoid local damage caused by stress concentration, thereby significantly improving the overall structural strength of panel 1 and extending its service life.

[0040] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A high-voltage coil panel structure, characterized in that, It includes a panel and a high-voltage coil. The panel is provided on the front side of the high-voltage coil. The top of the panel is provided with an inlet terminal and the bottom of the panel is provided with an outlet terminal. Multiple tap-stop terminals are provided between the inlet terminal and the outlet terminal. A wave structure is provided between the incoming line terminal and the tap stop terminal, and the wave structure is also provided between the tap stop terminal and the outgoing line terminal. The wave structure is used to increase the creepage distance between the incoming line terminal and the tap stop terminal, and between the tap stop terminal and the outgoing line terminal.

2. The high-voltage coil panel structure according to claim 1, characterized in that, The wave structure includes multiple protrusions arranged vertically, and all of the protrusions are arranged horizontally on the panel.

3. The high-voltage coil panel structure according to claim 2, characterized in that, The panel is also provided with a groove, the left and right ends of which penetrate the panel, the opening of the groove is oriented forward, and a boss is provided between two adjacent grooves.

4. The high-voltage coil panel structure according to claim 3, characterized in that, The groove has a first inclined surface on both sides, and the boss has a second inclined surface on both the upper and lower sides. The first inclined surface and the second inclined surface are smoothly connected, and both the first inclined surface and the second inclined surface are inclined from front to back to both sides.

5. A high-voltage coil panel structure according to claim 4, characterized in that, The front sidewall of the boss and the bottom wall of the groove are both planar structures.

6. A high-voltage coil panel structure according to claim 5, characterized in that, The front sidewall of the boss and the bottom wall of the groove are both arc-shaped structures.

7. A high-voltage coil panel structure according to claim 6, characterized in that, The boss and the panel are integrally formed.

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