Inlet and outlet coupling connector of gas pressure regulating station

The utility model discloses a coupling joint of the inlet/outlet of a fuel gas pressure regulating station, mainly comprising an inlet/outlet pipe of the pressure regulating station, a fixed flange arranged at the upper top of the inlet, a welding circular bead arranged at the lower top of the inlet/outlet, a movable flange matched with a welding flange, and a sealing ring arranged at the end face of the welding flange. In the process of mounting, the fixed flange is firstly mounted, then the movable flange is rotated to align with a bolt mounting hole on a flange matched with the movable flange, and at last a bolt is penetrated to screw on, thus the assembly and the disassembly can be pretty convenient.