Gas chamber assembling method and device in GIS (Gas Insulated Switchgear) equipment

The invention belongs to the technical field of GIS equipment production and application, and discloses a gas chamber assembling method and device in GIS equipment. According to the gas chamber assembling method in the GIS equipment, a first gas buffer chamber is arranged on the side, facing a first connecting conductor, of a first gas chamber, a second gas buffer chamber is arranged on the side, facing a second connecting conductor, of a second gas chamber, and the first connecting conductor penetrates through the first gas buffer chamber and forms a first external end; the second connecting conductor passes through the second gas buffer chamber and forms a second external end; then the first external end and the second external end are electrically connected through a conductor joint and are sealed to obtain a connection chamber; the first gas buffer chamber, the second gas buffer chamber and the connecting chamber are communicated; and finally, vacuumizing and injecting insulating gas into the first gas bu