Gas pipeline silencer

The utility model belongs to the technical field of gas transmission and distribution equipment, and discloses a gas pipeline silencer. The silencer is mainly technically characterized by comprising a shell with an air inlet pipe and an air outlet pipe, an inlet flange is arranged at the air inlet pipe, an outlet flange is arranged at the air outlet pipe, the diameter of the air inlet pipe of the shell is smaller than that of the air outlet pipe, the air inlet pipe and the air outlet pipe are connected through a reducer pipe, the air inlet pipe is provided with a basin cavity, and a front silencing pore plate is arranged in the basin cavity. A middle silencing pore plate set is arranged in the reducer pipe and close to the air inlet pipe, a rear silencing pore plate is arranged in the air outlet pipe and close to the reducer pipe, the front silencing pore plate, the middle silencing pore plate set and the rear silencing pore plate are connected through a threaded pull rod, and a first nut, a second nut, a thi