Gas-insulated switchgear
The gas-insulated switchgear design addresses weight and size concerns by distributing stress through projections and low-pressure spaces, ensuring efficient operation and reduced flange thickness.
JP7868285B1Active Publication Date: 2026-06-01MITSUBISHI ELECTRIC CORP
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- MITSUBISHI ELECTRIC CORP
- Filing Date
- 2025-11-14
- Publication Date
- 2026-06-01
Smart Images
Figure 0007868285000001 
Figure 0007868285000002 
Figure 0007868285000003
Abstract
The gas-insulated switchgear (100) comprises a tank (1) filled with insulating gas, a vacuum valve (22) provided inside the tank (1), a tank flange (2) that seals the tank (1), a double pressure flange (3) that forms an intermediate chamber (4) in the gap between the tank flange (2) and the tank flange (2), and an operating unit (11) provided outside the tank (1) for operating the opening and closing of the vacuum valve (22). The vacuum valve (22) is fixed to the double pressure flange (3) via a movable side conductor (17) and a movable side support insulator (13), and communicates with the inside of the bellows (25) of the vacuum valve (22), the inside of the movable side conductor (17), the inside of the movable side support insulator (13), and the intermediate chamber (4), forming a space with a gas pressure lower than the pressure of the insulating gas inside the tank (1). The double pressure flange (3) has a projection (3A) that abuts against the tank flange (2).
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