Outdoor pole-mounted vacuum circuit breaker

Abstract

The utility model relates to an outdoor pole-mounted vacuum circuit breaker. The technical problem to be solved by the utility model is to provide the outdoor pole-mounted vacuum circuit breaker. According to the technical scheme, the vacuum circuit breaker comprises a circuit breaker shell, a vacuum arc extinguish chamber assembly, a wiring board and an insulation sleeve assembly, the vacuum arc extinguish chamber assembly comprises an arc extinguish chamber cylinder, the arc extinguish chamber cylinder comprises a cylinder body and a cylinder boss, the wiring board comprises a wiring board fixing part and a wiring board external connection part, and the insulation sleeve assembly is arranged on the wiring board fixing part. The insulation sleeve assembly comprises an insulation sleeve main wrapping body and an insulation connecting piece. The insulation sleeve main wrapping body comprises a main wrapping body sleeve part and a main wrapping body lower wrapping part. Compared with the prior art, the outdoor pole-mounted vacuum circuit breaker has the advantages that a plurality of insulation sleeve main wrapping bodies can be connected together through the additional arrangement of the insulation connecting pieces, so that an insulation barrier is formed, the creepage distance of current is further increased, and the insulation performance is greatly improved.

Description

Technical Field

[0001] This utility model relates to an outdoor pole-mounted vacuum circuit breaker. Background Technology

[0002] Outdoor pole-mounted vacuum circuit breakers are important switching devices used in medium and high voltage power grids, primarily for line control and protection. Their working principle involves rapidly extinguishing the electric arc through a vacuum interrupter, thereby cutting off or connecting the circuit. To improve insulation and waterproofing at the terminal block, outdoor pole-mounted vacuum circuit breakers typically have an insulating sleeve installed there. Traditional insulating sleeves have the following drawbacks: 1. The simple design of traditional insulating sleeves may leave gaps between the sleeve and the terminal block or interrupter, easily leading to localized leakage or creepage, resulting in decreased insulation performance and affecting operational safety; 2. Traditional insulating sleeves are installed on the terminal block or interrupter cylinder using a simple sleeve connection method. Due to the lack of a robust connection structure, the insulating sleeve is prone to detachment or displacement under long-term operation due to vibration, wind, rain, and other external forces, reducing insulation and waterproofing performance. Improvements and optimizations are therefore proposed to address these issues. Utility Model Content

[0003] To address the aforementioned problems, the technical issue this invention aims to resolve is to provide an outdoor pole-mounted vacuum circuit breaker.

[0004] The technical solution adopted by this utility model of outdoor pole-mounted vacuum circuit breaker is characterized by comprising a circuit breaker housing, a vacuum interrupter assembly spaced apart on the circuit breaker housing, a terminal block, and an insulating sleeve assembly. The vacuum interrupter assembly includes an interrupter cylinder, which includes a cylinder body and cylinder bosses spaced apart from top to bottom on the cylinder body. The terminal block includes a terminal block fixing part fixed to the upper end of the vacuum interrupter assembly and a terminal block external connection part inclined upward. The insulating sleeve assembly includes an insulating sleeve main body and an insulating connector connecting multiple insulating sleeve main bodies.

[0005] The insulating sleeve main body includes a main body sleeve portion covering the main body of the cylinder and a main body lower portion covering the cylinder boss. A main body connecting portion is provided above the main body sleeve portion, and a main body limiting groove is provided on the main body connecting portion. A main body clearance opening for the terminal block to pass through is provided on the outer wall of the main body sleeve portion. Both the main body sleeve portion and the main body lower portion are provided with main body cutouts to facilitate the fitting of the insulating sleeve main body. The insulating connector includes a connector rod portion. Connector mounting holes that are spaced apart on the connector rod portion and correspond to the main body limiting groove are provided. A flow-blocking block is provided between the two connector mounting holes on the connector rod portion.

[0006] The main package sleeve portion is provided with a first docking edge and a second docking edge at the main package cut. The inner side of the first docking edge of the main package is provided with main package docking posts at intervals, and the second docking edge of the main package is provided with main package snap-fit ​​holes for the main package docking posts to snap into.

[0007] The main package cut is positioned opposite to the main package clearance opening.

[0008] The main package sleeve is provided with a plug at the main package clearance opening that is elastically connected to the main package sleeve.

[0009] The upper end of the main package sleeve is provided with a water-blocking surface, the diameter of which is larger than the diameter of the main package sleeve.

[0010] The flow-blocking block has a U-shaped structure.

[0011] The advantages of this utility model of outdoor pole-mounted vacuum circuit breaker are as follows: the addition of insulating connectors allows multiple insulating sleeve main bodies to be connected together to form an insulating barrier, further increasing the current creepage distance and greatly improving the insulation performance; the insulating sleeve main body provides more comprehensive coverage, ensuring that the insulating sleeve can completely cover the main body of the cylinder and the boss, reducing gaps and avoiding leakage or creepage phenomena. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is the front view of the outdoor pole-mounted vacuum circuit breaker of this utility model;

[0014] Figure 2 This is a front view of the arc-extinguishing chamber cylinder of this utility model;

[0015] Figure 3 This is a side view of the junction box of this utility model;

[0016] Figure 4 This is a structural schematic diagram of the insulating sleeve assembly of this utility model;

[0017] Figure 5 This is a front structural diagram of the main body of the insulating sleeve of this utility model;

[0018] Figure 6 This is a schematic diagram of the back structure of the main body of the insulating sleeve of this utility model;

[0019] Figure 7 This is a structural schematic diagram of the insulating connector of this utility model. Detailed Implementation

[0020] like Figure 1-7As shown, the outdoor pole-mounted vacuum circuit breaker of this utility model includes a circuit breaker housing 1, a vacuum interrupter assembly 2 spaced apart on the circuit breaker housing 1, a terminal block 3, and an insulating sleeve assembly 4. The vacuum interrupter assembly 2 includes an interrupter cylinder, which includes a cylinder body 6 and cylinder bosses 7 spaced apart from top to bottom on the cylinder body 6. The terminal block 3 includes a terminal block fixing part 8 fixed to the upper end of the vacuum interrupter assembly 2 and a terminal block external connection part 9 inclined upward. The insulating sleeve assembly 4 includes an insulating sleeve main body 10 and an insulating connector 11 connecting multiple insulating sleeve main bodies 10. The insulating connector 11 allows multiple insulating sleeve main bodies to be connected to form an insulating barrier, further increasing the current creepage distance and greatly improving the insulation performance.

[0021] The insulating sleeve main body 10 includes a main body sleeve portion 13 covering the outer side of the cylindrical body 6 and a main body lower portion 14 covering the cylindrical body boss 7. A main body connecting portion 15 is provided above the main body sleeve portion 13, and a main body limiting groove 16 is provided on the main body connecting portion 15. A main body clearance opening 17 for the terminal block 3 to pass through is provided on the outer wall of the main body sleeve portion 13. Both the main body sleeve portion 13 and the main body lower portion 14 are provided with main body cutouts 18 to facilitate the fitting of the insulating sleeve main body 10. The insulating connector... 11 includes a connecting rod body 20, on which connecting rod body 20 is provided at intervals to connect with the main casing limiting groove 16. The connecting rod body 20 is provided with a flow-blocking block 22 between the two connecting mounting holes 21. The insulating sleeve main casing 10 provides more comprehensive coverage, ensuring that the insulating sleeve can completely cover the cylinder body and the boss, reducing gaps and avoiding leakage or creepage. The main casing cutout 18 simplifies the installation process, allowing the insulating sleeve main casing 10 to be quickly fitted, saving time and reducing labor intensity.

[0022] The main package sleeve portion 13 is provided with a first main package mating edge 24 and a second main package mating edge 25 at the main package cut 18. The inner side of the first main package mating edge 24 is provided with main package mating posts 26 at intervals. The second main package mating edge 25 is provided with main package snap-fit ​​holes 27 for snapping with the main package mating posts 26. The main package mating structure realizes a quick and stable connection, ensuring the integrity and sealing of the insulating sleeve after installation, and avoiding loosening problems that may occur during long-term use.

[0023] The main package cut 18 is positioned opposite to the main package clearance opening 17.

[0024] The main sleeve portion 13 is provided with a plug 30 at the main sleeve relief opening 17, which is elastically connected to the main sleeve portion 13. The elastic plug can effectively fill the gap left after the terminal block passes through the main sleeve relief opening 17, further improving the sealing and waterproof performance of the insulating sleeve.

[0025] The upper end of the main casing sleeve 13 is provided with an upper water-blocking surface 31. The diameter of the upper water-blocking surface 31 is larger than the diameter of the main casing sleeve 13. The upper water-blocking surface increases the contact area and forms a waterproof barrier, effectively preventing rainwater from flowing into the equipment along the main body of the sleeve and improving the waterproof performance of the circuit breaker.

[0026] The flow-blocking block 22 has a U-shaped structure.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. An outdoor pole-mounted vacuum circuit breaker, characterized in that: The circuit breaker assembly includes a circuit breaker housing (1), a vacuum interrupter assembly (2) spaced on the circuit breaker housing (1), a terminal block (3), and an insulating sleeve assembly (4). The vacuum interrupter assembly (2) includes an interrupter cylinder, which includes a cylinder body (6) and cylinder bosses (7) spaced from top to bottom on the cylinder body (6). The terminal block (3) includes a terminal block fixing part (8) fixed to the upper end of the vacuum interrupter assembly (2) and a terminal block external connection part (9) inclined upward. The insulating sleeve assembly (4) includes an insulating sleeve main body (10) and an insulating connector (11) connecting multiple insulating sleeve main bodies (10). The insulating sleeve main body (10) includes a main body sleeve portion (13) covering the main body (6) and a main body lower body portion (14) covering the main body boss (7). A main body connecting portion (15) is provided above the main body sleeve portion (13), and a main body limiting groove (16) is provided on the main body connecting portion (15). A main body clearance opening (17) for the terminal block (3) to pass through is provided on the outer wall of the main body sleeve portion (13). Both the sleeve portion (13) and the lower portion (14) of the main package are provided with main package cutouts (18) to facilitate the fitting of the main package (10) of the insulating sleeve. The insulating connector (11) includes a connector rod portion (20). The connector rod portion (20) is provided with connector mounting holes (21) that are spaced apart and connected to the main package limiting groove (16). The connector rod portion (20) is provided with a baffle block (22) between the two connector mounting holes (21).

2. The outdoor pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The main package sleeve part (13) is provided with a first docking edge (24) and a second docking edge (25) at the main package cut (18). The main package docking edge (24) is provided with a main package docking post (26) at intervals on the inner side of the first docking edge (24). The main package docking edge (25) is provided with a main package snap-fit ​​hole (27) for the main package docking post (26) to snap into.

3. The outdoor pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The main package cut (18) is positioned opposite to the main package clearance opening (17).

4. The outdoor pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The main package sleeve part (13) is provided with a plug (30) at the main package clearance opening (17) that is elastically connected to the main package sleeve part (13).

5. The outdoor pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The upper end of the main package sleeve (13) is provided with a sleeve upper water-blocking surface (31), and the diameter of the sleeve upper water-blocking surface (31) is larger than the diameter of the main package sleeve (13).

6. The outdoor pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The flow-blocking block (22) has a U-shaped structure.

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