Fast open locking gear of high pressure dry welding experimental cabin

A fast unlocked lock unit of the high-pressure cabin for dry welding experiment is composed of a cylindrical toothed flange with one end fixed to cabin body and another end with teeth, an enclosing toothed flange with one end fixed to the enclosing cover of said cabin and another end with teeth, and a fastening hoop with slot at its middle. Said two flanges are butt-connected via said fastening hoop and their teeth are contained in said slot. A U-shaped sealing ring is arranged in a sealing slot on the toothed end face of said cylindrical toothed flange.