Water removal device for gas

The utility model discloses a gas dewatering device in the technical field of gas detection. The gas dewatering device comprises a base, a dryer inner pipe, a dryer outer pipe, a gas inlet header pipe, a gas outlet header pipe and a gas circuit switch, the air inlet header pipe and the air outlet header pipe are arranged in the base, the dryer outer pipe is separably and hermetically inserted in the mounting hole, the dryer inner pipe is separably and hermetically mounted on the butt-joint air pipe, and a parallel pipeline is formed between the air inlet header pipe and the air outlet header pipe, so that the structure is compact, and the air inlet header pipe and the air outlet header pipe are assembled into a small parallel airflow channel; adjustment and control can be conveniently carried out through a gas circuit switch, gas flow pipelines are very convenient to install and butt-joint, a double-layer channel of a sleeve structure is utilized, the occupied space of the pipelines is small, a whole set of c