An insulator grading ring with arc-extinguishing function suitable for long rod type insulator string

Abstract

The utility model discloses a kind of insulator grading ring with arc extinguishing function suitable for long rod type insulator string, the insulator grading ring includes ring body and connecting rod;The ring body is equipped with opening, and the both ends of opening are respectively equipped with extension section to outside and extension section is horn-shaped;Extension section end is equipped with discharge ball;The connecting rod one end is installed in ring body inner circle, and the other end is connected with the connecting hardware of two insulators by bolt connection;When insulator both ends electrode arc or flashover occurs, power frequency large arc is guided to the discharge ball of extension section end by the opening of insulator grading ring;The utility model can avoid that long rod type porcelain insulator is burnt by power frequency large arc in operating process.

Description

Technical Field

[0001] This utility model relates to the field of fuses, specifically to an insulator equalizing ring with arc-extinguishing function suitable for long rod-type insulator strings. Background Technology

[0002] Existing insulator string equalizing rings are closed circular rings. During flashover, a large power frequency arc jumps across the ring, its position fluctuating erratically. Thus, the arc at both ends of the insulator may not be in the same direction. When a flashover occurs, the arc may wrap around the insulator, potentially burning it. Furthermore, the arc can persist for a considerable time, posing a safety hazard to transmission lines. Therefore, this paper proposes an insulator equalizing ring with arc-extinguishing function suitable for long rod-type insulator strings, designed to prevent long rod-type porcelain insulators from being burned by large power frequency arcs during operation. Utility Model Content

[0003] In view of the technical problems existing in the background art, this utility model provides an insulator equalizing ring with arc-extinguishing function suitable for long rod-type insulator strings, which can prevent long rod-type porcelain insulators from being burned by large power frequency electric arcs during operation. To achieve the above objective, this utility model provides the following technical solution:

[0004] An insulator equalizing ring with arc-extinguishing function suitable for long rod insulator strings, the insulator equalizing ring comprising a ring body and a connecting rod;

[0005] The ring body has an opening, and at both ends of the opening are outwardly extending sections that are horn-shaped; a discharge ball is provided at the end of the extending section.

[0006] One end of the connecting rod is installed in the inner ring of the ring, and the other end is connected to the connecting hardware of the two insulators by bolts.

[0007] When an arc is generated or a flashover occurs at the electrodes at both ends of the insulator, the large power frequency arc is led from the opening of the equalizing ring of the insulator to the discharge ball at the end of the extension section.

[0008] Preferably, the discharge ball is a solid sphere, which is welded to the end of the extension section.

[0009] Preferably, the insulator equalizing ring is made of round steel.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model uses an insulator equalizing ring with an opening to guide the electric arc along the opening to the discharge balls of the two extended sections, elongating it until it is extinguished, thereby avoiding the porcelain body from being burned, playing an electrical protection role, and ensuring the safe operation of the line.

[0012] 2. The insulator equalizing ring is equipped with a connecting rod, which is bolted to the connecting hardware of the two insulators. Compared with the existing technology where the clamp is installed on the iron cap, it is easier to operate, less likely to fall off, and has strong stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the insulator equalizing ring of this utility model;

[0014] Figure 2 for Figure 1 Side view;

[0015] Figure 3 This is a schematic diagram of the installation of the equalizing ring for the insulator of this utility model;

[0016] In the diagram, 1-Insulator equalizing ring, 2-Ring body, 201-Opening, 202-Extension section, 3-Connecting rod, 4-Bolt, 5-Discharge ball, 6-Connecting hardware. Detailed Implementation

[0017] In existing technologies, on the one hand, the equalizing ring of the existing insulator string is a closed circular ring. When a flashover occurs, the large power frequency arc jumps on the ring, and its position on the ring is unpredictable. Thus, the arc at both ends of the insulator may not be in the same direction. When a flashover occurs, the arc wraps around the insulator, which may burn the insulator. At the same time, the arc can last for a long time, which poses a hidden danger to the safety of the transmission line.

[0018] On the other hand, the existing insulator equalizing rings and the insulators to be protected are fixed to the iron caps of the insulators with clamps, which are easy to fall off and are inconvenient to install.

[0019] To address existing problems, this patent proposes an insulator equalizing ring with arc-extinguishing function suitable for long rod-type insulator strings, combined with... Figures 1-3 The insulator equalizing ring 1 includes a ring body 2 and a connecting rod 3;

[0020] The ring body 2 has an opening 201, and at both ends of the opening 201 there are outward extensions 202, and the extensions 202 are horn-shaped; a discharge ball 5 is provided at the end of the extension 202.

[0021] One end of the connecting rod 3 is installed in the inner ring of the ring body 2, and the other end is connected to the connecting hardware 6 of the two insulators by bolts 4, such as... Figure 3 As shown, compared with the existing technology where the clamp is installed on the iron cap, the installation and operation are more convenient, it is not easy to fall off, and it has strong stability.

[0022] When an arc is generated or a flashover occurs at the electrodes at both ends of the insulator, the large power frequency arc is led from the opening 201 of the equalizing ring 1 of the insulator to the discharge ball 5 at the end of the extension section 202.

[0023] Preferably, the discharge ball 5 is a solid sphere, which is welded to the end of the extension 202.

[0024] Preferably, the insulator equalizing ring 1 is made of round steel.

[0025] like Figures 1-3 As shown, the working principle and process of this utility model are as follows:

[0026] When an arc is generated or a flashover occurs at the electrodes at both ends of the insulator, the large power frequency arc is led from the opening 201 of the ring to the two extension sections 202, and finally to the discharge ball 5. The arc is elongated and extinguished, and at the same time, the arc drifts away from the insulator porcelain body, thereby preventing the porcelain body from being burned and ensuring the safe operation of the insulator.

Claims

1. An insulator equalizing ring with arc-extinguishing function suitable for long rod-type insulator strings, characterized in that: The insulator equalizing ring includes a ring body and a connecting rod; The ring body has an opening, and at both ends of the opening are outwardly extending sections that are horn-shaped; a discharge ball is provided at the end of the extending section. One end of the connecting rod is installed in the inner ring of the ring, and the other end is connected to the connecting hardware of the two insulators by bolts. When an arc is generated or a flashover occurs at the electrodes at both ends of the insulator, the large power frequency arc is led from the opening of the equalizing ring of the insulator to the discharge ball at the end of the extension section.

2. The insulator equalizing ring with arc-extinguishing function suitable for long rod-type insulator strings according to claim 1, characterized in that: The discharge sphere is a solid sphere, which is welded to the end of the extension section.

3. The insulator equalizing ring with arc-extinguishing function suitable for long rod-type insulator strings according to claim 2, characterized in that: The insulator equalizing ring is made of round steel.

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