US 12,249,814 B2
Valve gas filter and gas-insulated switchgear
Kazuya Katayama, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 18/042,348
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Oct. 22, 2020, PCT No. PCT/JP2020/039670
§ 371(c)(1), (2) Date Feb. 21, 2023,
PCT Pub. No. WO2022/085145, PCT Pub. Date Apr. 28, 2022.
Prior Publication US 2023/0327411 A1, Oct. 12, 2023
Int. Cl. H02B 13/055 (2006.01); H02B 13/045 (2006.01); H02B 13/065 (2006.01)
CPC H02B 13/055 (2013.01) [H02B 13/045 (2013.01); H02B 13/065 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A valve gas filter comprising:
a valve box attached to a gas enclosing port connected to a gas-insulated device, wherein the gas-insulated device is to be filled with an insulating gas and hermetically sealed; and
a valve body configured using a tubular member whose upper surface and bottom surface are opened, the tubular member being arranged such that an axial direction is parallel to a gas passage of the insulating gas, the valve body opening and closing the gas passage by the tubular member moving in a direction perpendicular to the gas passage in the valve box, wherein
the valve body includes, in the tubular member, a filter that is formed by a porous insulating material and that allows passage of the insulating gas but does not allow passage of foreign matter contained in the insulating gas.