Gas charging device for pre-charging protective gas into pressure container

Abstract

The utility model provides an inflating device for pre-inflating protective gas for a pressure vessel, which relates to the technical field of inflating and comprises a large screen frame, one end of the large screen frame is fixedly connected with a fixing part, the surface of the fixing part is fixedly connected with a small screen frame, and a power distribution cabinet is fixedly mounted on the surface of the large screen frame and close to the top. A time controller is fixedly mounted on the surface of the power distribution cabinet, a base is fixedly mounted at the top of the small screen frame, a U-shaped plate is fixedly mounted at the top of the base, and a gas switch is mounted in the U-shaped plate. According to the automatic nitrogen filling device, the gas switch is automatically triggered for filling gas after the gas filling device is automatically controlled, a power supply is turned on and a product is placed, manual forgetting of gas filling operation is avoided, the quality stability of the product is guaranteed, meanwhile, the nitrogen filling time can be accurately controlled according to the inner volume of the product by means of the gas flow meter and the time controller, and the accurate nitrogen filling amount is guaranteed; and the nitrogen charging effect is improved.