Design of Inflation and Sealing Device in Radar Feedline System

It is required to make the whole feedline system vacuum,then fill SF6 gas into the feedline system and seal the whole system in order to meet the requirements of the radar.Meanwhile according to the specific conditions,the devices should be simple,reliable,cheap and practical.The joint seal and ignition problems are solved well by adopting the O-type sealing ring and the flange with choke slots.And the integration design of the vacuumizing device and the inflation device makes the feedline system simple,reliable,cheap and practical.