Pressure regulator for fuel gas conveying pipeline

The utility model relates to the technical field of pressure regulators, and discloses a pressure regulator for a fuel gas conveying pipeline, which comprises a pressure regulator body, a screw sleeve is arranged at the top of the pressure regulator body, a first bolt is arranged in an inner cavity of the screw sleeve, and a limiting assembly is arranged at the top of the pressure regulator body. The limiting assembly comprises a cylinder installed on the top of the pressure regulator body, an inner cavity of the cylinder is movably sleeved with a lifting cylinder, the rear side of the cylinder is sleeved with an auxiliary cylinder, an inner cavity of the auxiliary cylinder communicates with an inner cavity of the cylinder, and a connecting cylinder is installed on the rear side of the auxiliary cylinder. A limiting assembly is arranged at the bottom of a first bolt, after the first bolt adjusts the pressure of the pipeline, a lifting cylinder is driven to move in a cylinder, a fixing plate is moved to the po