Multilayer gradient type arc-resistant grading ring

Abstract

The utility model discloses a multilayer gradient type arc-resistant grading ring, and relates to the technical field of grading rings. Comprising a first grading ring, a second grading ring is arranged above the first grading ring, a third grading ring is arranged above the second grading ring, connecting devices are clamped to the outer walls of the first grading ring, the second grading ring and the third grading ring, fixing devices are clamped to the outer walls of the connecting devices, and mounting buckles are lapped to the outer walls of the connecting devices; the multi-layer gradient diameter design is matched with the electric field distribution characteristics of the high-voltage equipment, and the potential difference is balanced layer by layer from a top strong electric field area to a lower weak electric field area, so that the local electric field intensity is reduced, arc discharge is inhibited, and concentrated discharge is avoided; the transportation difficulty and the occupied space are reduced, and the installation process is simplified through the modes of clamping, bolt fixing and the like in combination with the pre-assembly function of the elastic piece and the limiting device during installation.

Description

A multi-layer gradient arc-resistant equalizing ring Technical Field

[0001] This utility model relates to the field of equalizing ring technology, specifically a multi-layer gradient arc-resistant equalizing ring. Background Technology

[0002] In high-voltage power transmission and transformation systems, grading rings are key components for ensuring the insulation performance of equipment. They are mainly used to equalize the electric field distribution on the surface of high-voltage equipment and suppress arc discharge. Traditional grading rings often adopt a single-layer structure or a multi-layer stacked design with uniform diameter, which is difficult to adapt to the distribution characteristics of decreasing electric field intensity from the top to the bottom of high-voltage equipment. In actual operation, due to the concentrated electric field intensity at the top of the equipment, a single-layer grading ring cannot effectively disperse the potential difference, which can easily lead to local arc discharge, resulting in insulation aging or even equipment failure. On the other hand, multi-layer equal-diameter grading rings are not optimized for electric field distribution, resulting in insufficient electric field suppression in some areas and redundancy in others. This makes it difficult to fully realize the grading effect and also causes material waste. In addition, traditional grading rings usually adopt an integral structure, which is large in size and heavy in weight. They require special packaging and transportation equipment during transportation, which is costly and easily damaged by collisions. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a multi-layer gradient arc-resistant equalizing ring. By matching the electric field distribution through gradient diameter design, and combining a modular structure with pre-assembly functionality, it improves arc resistance and construction efficiency while reducing equipment operation risks and maintenance costs.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer gradient arc-resistant equalizing ring, comprising a first equalizing ring, a second equalizing ring positioned above the first equalizing ring, and a third equalizing ring positioned above the second equalizing ring. Connecting devices are snapped onto the outer walls of the first, second, and third equalizing rings. A fixing device is snapped onto the outer wall of each connecting device, and a mounting buckle overlaps the outer wall of the connecting device. By using a multi-layer gradient diameter design to match the electric field distribution characteristics of high-voltage equipment, the potential difference is gradually balanced from the top strong electric field region to the lower weak electric field region, thereby reducing the local electric field intensity, suppressing arc discharge, avoiding concentrated discharge, and thus improving arc resistance performance.

[0007] Preferably, the connecting device includes a connecting frame, with a support frame symmetrically fixedly connected to the outer wall of the connecting frame. Positioning holes are symmetrically formed in the wall of the connecting frame. A connecting hole is formed through the side wall of the connecting frame. An installation groove is formed in the side wall of the connecting frame. An elastic sheet is fixedly connected to the side wall of the connecting frame. A through groove is formed in the wall of the connecting frame. The outer walls of the connecting frame and the support frame overlap with the outer walls of the mounting buckles. The outer wall of the connecting frame is respectively engaged with the outer walls of the first equalizing ring, the second equalizing ring, and the third equalizing ring through the installation groove. By adopting a combined design, the multi-layer equalizing rings, the connecting device, and the fixing device can be transported separately, reducing transportation difficulty and space occupation.

[0008] Preferably, the fixing device includes a limiting plate, the outer wall of the limiting plate has a limiting groove, the wall of the limiting plate has a through hole, the inner wall of the limiting plate is fixedly connected to a limiting device, and the outer wall of the limiting plate is engaged with the outer walls of the first equalizing ring, the second equalizing ring and the third equalizing ring respectively through the limiting groove.

[0009] Preferably, the limiting device includes a connecting block, a limiting frame is fixedly connected to the outer wall of the connecting block, a blocking block is fixedly connected to the outer wall of the limiting frame, a guide groove is provided on the outer wall of the blocking block, the outer walls of the connecting block and the limiting frame are both fixedly connected to the inner wall of the limiting plate, and the outer wall of the blocking block is engaged with the elastic sheet. During installation, the installation process is simplified and construction efficiency is effectively improved by using methods such as snap-fit ​​and bolt fixing, combined with the pre-assembly function of the elastic sheet and the limiting device.

[0010] (III) Beneficial Effects

[0011] This invention provides a multi-layer gradient arc-resistant equalizing ring. It has the following beneficial effects:

[0012] (I) This equalizing ring, through a multi-layer gradient diameter design, matches the electric field distribution characteristics of high-voltage equipment. From the strong electric field region at the top to the weaker electric field region at the bottom, it gradually equalizes the potential difference, thereby reducing the local electric field intensity, suppressing arc discharge, avoiding concentrated discharge, and thus improving arc resistance performance, extending the insulation life of high-voltage equipment, and reducing the risk of failure.

[0013] (II) The equalizing ring adopts a modular design, and the multi-layer equalizing ring, connecting device and fixing device can be transported separately, reducing transportation difficulty and space occupation. During installation, the installation process is simplified by means of snap-fit ​​and bolt fixing, combined with the pre-assembly function of elastic sheet and limit device, which effectively improves construction efficiency. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 is a structural schematic diagram of the connecting device of this utility model;

[0016] Figure 3 is a structural schematic diagram of the fixing device of this utility model;

[0017] Figure 4 is a schematic diagram of the limiting device of this utility model.

[0018] In the diagram: 1. First equalizing ring; 2. Second equalizing ring; 3. Third equalizing ring; 4. Connecting device; 5. Fixing device; 6. Mounting buckle; 41. Connecting frame; 42. Support frame; 43. Positioning hole; 44. Connecting hole; 45. Mounting groove; 46. Elastic sheet; 47. Through groove; 51. Limiting plate; 52. Limiting groove; 53. Through hole; 54. Limiting device; 541. Connecting block; 542. Limiting frame; 543. Blocking block; 544. Guide groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4. This utility model provides a technical solution: a multi-layer gradient arc-resistant equalizing ring, including a first equalizing ring 1, a second equalizing ring 2 above the first equalizing ring 1, and a third equalizing ring 3 above the second equalizing ring 2. The outer walls of the first equalizing ring 1, the second equalizing ring 2, and the third equalizing ring 3 are all snapped with connecting devices 4. The outer walls of the connecting devices 4 are snapped with fixing devices 5, and the outer walls of the connecting devices 4 are overlapped with mounting buckles 6. In the gradient structure, the upper third equalizing ring 3 has the smallest diameter, corresponding to the strong electric field area at the top of the high-voltage equipment. The diameters of the middle second equalizing ring 2 and the lower first equalizing ring 1 increase sequentially, gradually covering the areas where the electric field intensity decreases. This diameter gradient design can make the electric field intensity on the surface of each equalizing ring tend to be uniform, shorten the electric field path between different potential areas, and effectively suppress local arc discharge.

[0021] The connecting device 4 includes a connecting frame 41, with a support frame 42 symmetrically fixedly connected to the outer wall of the connecting frame 41. Positioning holes 43 are symmetrically formed in the wall of the connecting frame 41. A connecting hole 44 is formed through the side wall of the connecting frame 41. A mounting groove 45 is formed in the side wall of the connecting frame 41. An elastic sheet 46 is fixedly connected to the side wall of the connecting frame 41. A through groove 47 is formed in the wall of the connecting frame 41. The outer walls of the connecting frame 41 and the support frame 42 overlap with the outer wall of the mounting buckle 6. The outer wall of the connecting frame 41 passes through the mounting groove. 45 is respectively engaged with the outer walls of the first equalizing ring 1, the second equalizing ring 2, and the third equalizing ring 3. The connecting frame 41 is respectively engaged with the outer walls of the first equalizing ring 1, the second equalizing ring 2, and the third equalizing ring 3 through the mounting groove 45 of the connecting device 4. The diameters of the three rings decrease from bottom to top to form a gradient structure. Then, the mounting buckle 6 is overlapped on the outside of the connecting frame 41 and the support frame 42. Bolts are inserted through the positioning hole 43 and the corresponding hole of the mounting buckle 6 to achieve the final fixation of the equalizing ring and the mounting buckle 6.

[0022] The fixing device 5 includes a limiting plate 51, a limiting groove 52 is formed on the outer wall of the limiting plate 51, a through hole 53 is formed in the wall of the limiting plate 51, a limiting device 54 is fixedly connected to the inner wall of the limiting plate 51, and the outer wall of the limiting plate 51 is engaged with the outer wall of the first equalizing ring 1, the outer wall of the second equalizing ring 2 and the outer wall of the third equalizing ring 3 respectively through the limiting groove 52.

[0023] The limiting device 54 includes a connecting block 541, a limiting frame 542 fixedly connected to the outer wall of the connecting block 541, a blocking block 543 fixedly connected to the outer wall of the limiting frame 542, and a guide groove 544 formed on the outer wall of the blocking block 543. The outer walls of both the connecting block 541 and the limiting frame 542 are fixedly connected to the inner wall of the limiting plate 51. The outer wall of the blocking block 543 engages with the elastic sheet 46, thus securing the limiting plate 51 of the fixing device 5 to the first equalizing ring 1, the second equalizing ring 2, and the third equalizing ring 3 via the limiting groove 52. The blocking block 543 on the connecting block 541... During this process, 43 will engage with the elastic sheet 46 of the connecting frame 41. Utilizing the deformation force of the elastic sheet 46 and the setting of the guide groove 544, the elastic sheet 46 will slide past the blocking block 543 and the limiting frame 542. Afterward, the elastic sheet 46 will recover from the obstruction of the blocking block 543. At this time, the groove position under the inclined surface of the elastic sheet 46 will engage with the blocking block 543, thereby securing the fixing device 5 onto the connecting device 4. At this time, the connecting hole 44 of the connecting device 4 is aligned with the through hole 53 of the fixing device 5. Finally, the bolt is inserted to complete the rigid fixation of the connecting device 4 and the fixing device 5.

[0024] When using this multi-layer gradient arc-resistant equalizing ring, the connecting frame 41 is first clamped onto the outer walls of the first equalizing ring 1, the second equalizing ring 2, and the third equalizing ring 3 through the mounting groove 45 of the connecting device 4. The diameters of the three rings decrease sequentially from bottom to top to form a gradient structure. Then, the mounting buckle 6 is overlapped on the outside of the connecting frame 41 and the support frame 42. Bolts are inserted through the positioning holes 43 and the corresponding holes of the mounting buckle 6 to achieve the final fixation of the equalizing ring and the mounting buckle 6. The combined design allows for separate transportation during transport, which facilitates transportation.

[0025] The limiting plate 51 of the fixing device 5 is engaged with the first equalizing ring 1, the second equalizing ring 2, and the third equalizing ring 3 through the limiting groove 52. During this process, the blocking block 543 on the connecting block 541 engages with the elastic plate 46 of the connecting frame 41. Utilizing the deformation force of the elastic plate 46 and the setting of the guide groove 544, the elastic plate 46 slides past the blocking block 543 and the limiting frame 542. Afterward, the elastic plate 46 returns to its original position without the obstruction of the blocking block 543. At this time, the groove position under the inclined surface of the elastic plate 46 will engage with the blocking block 543, thereby securing the fixing device 5 onto the connecting device 4. At this time, the connecting hole 44 of the connecting device 4 is aligned with the through hole 53 of the fixing device 5. Finally, the bolt is inserted to complete the rigid fixation of the connecting device 4 and the fixing device 5. The elastic plate 46 and the limiting device 54 work together to ensure the stability of the position of the equalizing ring during the fixing process. At the same time, pre-assembly facilitates the bolt fixing of the connecting device 4 and the fixing device 5.

[0026] In the gradient structure, the upper third equalizing ring 3 has the smallest diameter, corresponding to the strong electric field region at the top of the high-voltage equipment. The diameters of the middle second equalizing ring 2 and the lower first equalizing ring 1 increase sequentially, gradually covering the region where the electric field intensity decreases. This diameter gradient design can make the electric field intensity on the surface of each equalizing ring tend to be uniform, shorten the electric field path between different potential regions, effectively suppress local arc discharge, and the through groove 47 of the connecting device 4 makes it difficult for rainwater to accumulate in the connecting device 4.

[0027] The device uses a gradient diameter design to balance the potential difference layer by layer according to the electric field distribution characteristics of high-voltage equipment, thereby improving arc resistance and reducing the risk of discharge faults. The cooperation between the elastic sheet 46 and the limiting device 54 enhances the connection stability. The secondary fixing with bolts ensures the stability of the equalizing ring position during long-term operation, thereby extending the insulation life of high-voltage equipment.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layer gradient arc-resistant equalizing ring, comprising a first equalizing ring (1), a second equalizing ring (2) disposed above the first equalizing ring (1), and a third equalizing ring (3) disposed above the second equalizing ring (2), characterized in that: The outer walls of the first equalizing ring (1), the second equalizing ring (2) and the third equalizing ring (3) are all fitted with connecting devices (4), the outer walls of the connecting devices (4) are fitted with fixing devices (5), and the outer walls of the connecting devices (4) are fitted with mounting buckles (6); the connecting devices (4) include connecting frames (41), the outer walls of the connecting frames (41) are symmetrically fixedly connected with support frames (42), the walls of the connecting frames (41) are symmetrically provided with positioning holes (43), the side walls of the connecting frames (41) are provided with connecting holes (44), the side walls of the connecting frames (41) are provided with mounting grooves (45), the side walls of the connecting frames (41) are fixedly connected with elastic sheets (46), and the walls of the connecting frames (41) are provided with through grooves (47).

2. The multi-layer gradient arc-resistant equalizing ring according to claim 1, characterized in that: The outer walls of the connecting frame (41) and the support frame (42) overlap with the outer wall of the mounting buckle (6). The outer wall of the connecting frame (41) is engaged with the outer walls of the first equalizing ring (1), the second equalizing ring (2) and the third equalizing ring (3) respectively through the mounting groove (45).

3. The multi-layer gradient arc-resistant equalizing ring according to claim 1, characterized in that: The fixing device (5) includes a limiting plate (51), the outer wall of the limiting plate (51) is provided with a limiting groove (52), the wall of the limiting plate (51) is provided with a through hole (53), and the inner wall of the limiting plate (51) is fixedly connected with a limiting device (54).

4. The multi-layer gradient arc-resistant equalizing ring according to claim 3, characterized in that: The outer wall of the limiting plate (51) is engaged with the outer walls of the first equalizing ring (1), the second equalizing ring (2) and the third equalizing ring (3) respectively through the limiting groove (52).

5. A multi-layer gradient arc-resistant equalizing ring according to claim 3, characterized in that: The limiting device (54) includes a connecting block (541), a limiting frame (542) is fixedly connected to the outer wall of the connecting block (541), a blocking block (543) is fixedly connected to the outer wall of the limiting frame (542), and a guide groove (544) is provided on the outer wall of the blocking block (543).

6. The multi-layer gradient arc-resistant equalizing ring according to claim 5, characterized in that: The outer wall of the connecting block (541) and the outer wall of the limiting frame (542) are fixedly connected to the inner wall of the limiting plate (51), and the outer wall of the blocking block (543) is engaged with the elastic sheet (46).

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