SF6 circuit breaker explosion chamber

The utility model provides a SF6 circuit breaker explosion chamber, include: static contact module and moving contact module, the static contact module includes the quiet arc contact, the moving contact module includes the air cylinder, moves arc contact and tubulose nozzle, it reaches to move the arc contact the tubulose nozzle all with the cylinder bottom of air cylinder is connected, forms the plenum chamber between the cylinder bottom of air cylinder and the piston, and the hole and the plenum chamber of tubulose nozzle communicate each other, move the arc contact with the cooperation of quiet arc contact is equipped with the one way check valve who admits air towards the plenum chamber on the piston of air cylinder. It can supply plenum chamber tolerance fast when closing a floodgate, improve explosion chamber extinguished electric arc ability. 本实用新型提出了种SF断路器灭弧室，包括：静触头模块和动触头模块，所述静触头模块包括静弧触头，所述动触头模块包括压气缸、动弧触头以及管状喷嘴，所述动弧触头及所述管状喷嘴均与所述压气缸的缸底连接，压气缸的缸底与活塞之间形成压气室，管状喷嘴的内孔与压气室相互连通，所述动弧触头与所述静弧触头配合，压气缸的活塞上设有朝向压气室进气