Incomplete gear type 252kv GIS three-position isolation grounding switch

Abstract

The application belongs to the technical field of high-voltage electrical equipment, and particularly relates to an incomplete gear type 252kV GIS three-position isolation grounding switch. The incomplete gear type 252kV GIS three-position isolation grounding switch comprises a shell, an isolation moving contact and a grounding moving contact are installed in the shell, and the shell is characterized in that: the included angle between the isolation moving contact and the grounding moving contact is 90 degrees, an isolation rack is installed in the isolation moving contact, a grounding rack is installed in the grounding moving contact, the isolation rack is engaged with an isolation gear, and the grounding rack is engaged with a grounding gear. The application has the beneficial effects of: 90-degree staggered layered arrangement + phase-shared gas chamber, which significantly reduces the occupied space; single-shaft double-incomplete-gear transmission, which is stable in movement and low in failure rate; and the locking arc can avoid relative sliding of the rack after the incomplete gear is disengaged.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage electrical equipment technology, and specifically relates to an incomplete gear-type 252kV GIS three-position isolating grounding switch. Background Technology

[0002] With the development of power systems, higher requirements have been placed on the size, performance, and reliability of 252kV GIS equipment. Traditional three-position isolating grounding switches have problems such as complex structure, large size, and many transmission links, making it difficult to meet the requirements of modern power systems for miniaturization, integration, and high reliability. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this invention provides a simple and compact, space-efficient, safe and reliable, and smooth-transmission incomplete gear type 252kV GIS three-position isolating grounding switch.

[0004] This invention is achieved through the following technical solution: A 252kV GIS three-position isolating grounding switch with incomplete gears includes a housing, and an isolating moving contact and a grounding moving contact are installed inside the housing. The switch is characterized in that the included angle between the isolating moving contact and the grounding moving contact is 90°, an isolating rack is installed inside the isolating moving contact, a grounding rack is installed inside the grounding moving contact, the isolating rack meshes with an isolating gear, and the grounding rack meshes with a grounding gear.

[0005] Both the isolation gear and the grounding gear are equipped with locking arcs.

[0006] Both the isolation gear and the grounding gear are mounted on the gear shaft.

[0007] The beneficial effects of this invention are: the 90° staggered layered arrangement and phase-separated common air chamber significantly reduce the space occupied; the single-shaft double incomplete gear transmission ensures smooth movement and a low failure rate; and the locking arc prevents relative slippage of the rack after the incomplete gears disengage. Attached Figure Description

[0008] The invention will now be further described with reference to the accompanying drawings.

[0009] Appendix Figure 1 This is a schematic diagram of the structure of the present invention; Appendix Figure 2 This is a schematic diagram of the isolation closing structure of the present invention; Appendix Figure 3 This is a schematic diagram of the grounding closing structure of the present invention; In the diagram, 1 is the housing, 2 is the isolating moving contact, 3 is the grounding moving contact, 4 isolating rack, 5 is grounding rack, 6 isolating gear, 7 is grounding gear, 8 is locking arc, and 9 is gear shaft. Detailed Implementation

[0010] The attached figure illustrates a specific embodiment of the present invention. This embodiment includes an isolating moving contact 2, a grounding moving contact 3, a transmission mechanism, a locking mechanism, a fast grounding switch, and a phase-separated common gas chamber housing 1.

[0011] The isolating moving contact 2 and the grounding moving contact 3 are arranged in a staggered, layered manner at a 90° angle, resulting in a simple and compact structure.

[0012] The transmission mechanism includes a gear shaft 9 and two incomplete gears – an isolation gear 6 and a grounding gear 7. The isolation moving contact 2 and the grounding moving contact 3 are equipped with an isolation rack 4 and a grounding rack 5, which mesh with the two incomplete gears – the isolation gear 6 and the grounding gear 7 on the gear shaft 9 for transmission.

[0013] The locking mechanism includes the locking arc 8 on the incomplete gear-isolation gear 6 and the grounding gear 7.

[0014] The fast grounding switch is added to the isolating stationary contact side, which improves the equipment's functionality and engineering applicability.

[0015] The 252kV GIS three-position isolating grounding switch of the present invention, with its incomplete gear type, operates as follows: When the isolating moving contact 2 engages with the isolating gear 6 to close the circuit, the grounding moving contact 3 disengages. At this time, the grounding rack 5 inside the grounding moving contact 3 engages with the locking arc 8 of the grounding gear 7 to lock the grounding moving contact 3. When the grounding moving contact 3 closes the circuit, the isolating moving contact 2 disengages, and the isolating rack 4 inside the isolating moving contact 2 engages with the locking arc 8 of the incomplete isolating gear 6 to lock the isolating moving contact 2.

[0016] The 252kV GIS three-position isolating grounding switch of this invention, employing an incomplete gear type, features a phase-separated common-chamber structure, achieving compact three-phase integration and meeting the miniaturization design requirements of 252kV GIS. The use of two incomplete gears meshing on the same gear shaft simplifies the transmission chain. The phase-separated common-chamber structure facilitates the overall miniaturization and integration of the GIS. The integrated locking arc structure of the incomplete gears prevents rack slippage after disengagement, improving operational safety and reliability. A fast grounding switch can be added to expand the equipment's functionality and meet the needs of different engineering applications.

Claims

1. A partially geared 252kV GIS three-position isolating grounding switch, comprising a housing (1), wherein an isolating moving contact (2) and a grounding moving contact (3) are installed inside the housing (1), characterized in that: The included angle between the isolating moving contact (2) and the grounding moving contact (3) is 90°. An isolating rack (4) is installed inside the isolating moving contact (2), and a grounding rack (5) is installed inside the grounding moving contact (3). The isolating rack (4) meshes with the isolating gear (6), and the grounding rack (5) meshes with the grounding gear (7).

2. The incomplete gear-type 252kV GIS three-position isolating grounding switch according to claim 1, characterized in that: Both the isolation gear (6) and the grounding gear (7) are provided with locking arcs (8).

3. The incomplete gear-type 252kV GIS three-position isolating grounding switch according to claim 2, characterized in that: The isolation gear (6) and the grounding gear (7) are both mounted on the gear shaft (9).

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