公开(公告)号：US11062862B2

公开(公告)日：2021-07-13

申请号：US16772606

申请日：2018-12-21

申请人： ABB Power Grids Switzerland AG

发明人： Bernardo Galletti ,  Valeria Teppati ,  Emmanouil Panousis ,  Angelos Garyfallos ,  Branimir Radisavljevic ,  Joerg Lehmann ,  Christoph Reutlinger ,  Daniel Over ,  Patrick Stoller

IPC分类号： H01H1/38 ,  H01H33/70 ,  H01H33/90 ,  H01H33/95

摘要： The present disclosure provides a gas-insulated high or medium voltage circuit breaker including a first arcing contact and a second arcing contact, wherein at least one of the two arcing contacts is axially movable including a first and a second state of motion along a switching axis, wherein during a breaking operation, an arc between the first arcing contact and the second arcing contact is formed in an arcing region; a nozzle including a channel directed to the arcing region, for blowing an arc-extinguishing gas to the arcing region during the breaking operation; a diffuser adjacent to the nozzle, for transporting the gas from the arcing region to a region downstream of the diffuser; a buffer volume directly downstream of the diffuser, and an enclosure substantially surrounding the buffer volume circumferentially.