Pipe joint structure and pipeline system of railway vehicle

The utility model relates to the technical field of railway vehicles, and provides a pipe joint structure and a pipeline system of a railway vehicle. The pipe joint structure comprises a guide pipe, a joint body, a pressing sleeve and a connecting piece. The connector body is connected with the guide pipe, a sealing face is formed on the side, facing the guide pipe, of the connector body, the pressing sleeve is sleeved with the guide pipe and located at the joint of the guide pipe and the connector body, and the guide pipe is in butt joint with the sealing face or the guide pipe is in butt joint with the sealing face through the pressing sleeve. One end of the connecting piece is connected with the joint body, the other end of the connecting piece is connected with the pressing sleeve and/or the conduit, and the connecting piece is used for hermetically connecting the pressing sleeve to the joint of the conduit and the joint body. The connector body, the pressing sleeve and the guide pipe are connected throug