A split-action isolation breaking device for three-phase common-box products

By designing a phase-separable manual isolation disconnect device for three-phase common enclosure products, the opening and closing operation of the moving contact is achieved by using an insulated shaft and gear meshing. This solves the problems of cumbersome opening operation and reduced cleanliness in single-phase testing of GIS common enclosure structures, and realizes convenient and safe single-phase testing.

CN224519725UActive Publication Date: 2026-07-17SHANDONG TAIKAI HIGH VOLTAGE SWITCH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG TAIKAI HIGH VOLTAGE SWITCH
Filing Date
2025-07-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing GIS co-enclosure structure requires opening the gas chamber multiple times during single-phase testing, which leads to a decrease in cleanliness and the risk of discharge. The operation is cumbersome and inconvenient.

Method used

Design a phase-separable manual isolation disconnect device for three-phase common-enclosure products. The device achieves the opening and closing of the moving contact through the meshing of an insulated shaft and gears, avoiding the need to open the cover, ensuring the cleanliness of the gas chamber, and simplifying the operation process.

Benefits of technology

It enables safe and convenient single-phase combination and splitting operations without opening the cover, preventing impurities from entering the gas chamber, reducing operation time, avoiding the impact of discharge, and improving the cleanliness of the gas chamber and the reliability of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a kind of movable isolation disconnecting device for three-phase common box product, including shell and insulator insert, the shell includes tubular shell body and three shell pull openings being set in the side of shell body along circumference, the insulator insert includes respectively the upper insulator insert and lower insulator insert of being fixedly connected on the upper and lower ends of shell body, three static contact seat assemblies are fixedly connected on the lower insulator insert, three moving contact assemblies are fixedly connected on the upper insulator insert, sealing end cover is mounted on the shell pull opening, the insulating shaft for driving the moving contact assembly to realize opening and closing is shaft-connected on the sealing end cover, the utility model can be used not only to realize manual opening and closing action under the condition of inflating without opening cover under three-phase common box structure, but also can realize phase separation and open and close operation;Prevent the influence of impurities on the interior of air chamber, improve air chamber cleanliness;Reduce operation time, also avoid opening air chamber to produce abrasion and cause discharge influence to conductor repeated assembly.
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Claims

1. A split-action disconnect device for a three-phase common-tank product, characterized by: The device includes a housing (7) and an insulator insert (6). The housing (7) includes a tubular housing body (72) and three housing openings (71) arranged circumferentially on the side of the housing body (72). The insulator insert (6) includes an upper insulator insert (62) and a lower insulator insert (61) respectively fixed to the upper and lower ends of the housing body (72). Three stationary contact assemblies (3) are fixed to the lower insulator insert (61), and three moving contact assemblies (4) are fixed to the upper insulator insert (62). A sealing end cap (1) is installed on the housing opening (71), and an insulating shaft (2) is axially connected to the sealing end cap (1) to drive the moving contact assemblies (4) to achieve opening and closing.

2. A three-phase common tank product with a separable hand-off isolation breaker device according to claim 1, characterized in that: The moving contact assembly (4) includes a moving contact seat (43), a moving contact (42) that slides vertically in the moving contact seat (43), and a gear (41) that is shafted on the moving contact seat (43). The moving contact (42) is provided with straight teeth that mesh with the gear (41), and one end of the insulating shaft (2) is fixedly connected to the gear (41).

3. A split phase disconnect device for a three-phase package product according to claim 2, characterized in that: The insulating shaft (2) includes an insulating shaft body (22) and an insulating shaft handle (21) and an insulating shaft sleeve (23) fixed to both ends of the insulating shaft body (22). The insulating shaft sleeve (23) is fixed to the gear (41), and the insulating shaft handle (21) is axially connected to the sealing end cap (1).

4. A split phase disconnect device for a three-phase package product according to claim 3, characterized in that: The end of the insulating shaft handle (21) has an internal hexagonal opening.

5. A split phase disconnect device for a three-phase package product according to claim 1, characterized in that: The sealing end cap (1) includes a bushing (12) bolted to the housing opening (71) and a cover plate (11) bolted to the bushing (12).

6. A split phase disconnect device for a three-phase package product according to claim 2, characterized in that: The lower end of the moving contact seat (43) is equipped with a shielding ring (44).

7. A split phase disconnect device for a three-phase package product according to claim 1, characterized in that: The three stationary contact seats (3) are arranged in a triangular pattern.

8. A three-phase common tank product with a separable hand-operated isolation breaker device according to claim 1, characterized in that: The moving contact assembly (4) is bolted to a fixed seat (5), and the upper end of the fixed seat (5) is bolted to the upper insulator insert (62).

9. A three-phase co-enclosure product with a manually separable phase isolation disconnect device according to claim 1, characterized in that: The stationary contact assembly (3) includes a contact finger seat (31) bolted to the lower insulator insert (61), and the contact finger seat (31) contains a spring contact finger (32).