Neutron irradiation preventing exhaust pipe

The utility model relates to the technical field of neutron irradiation preventing exhaust systems, in particular to a neutron irradiation preventing exhaust pipe. The neutron irradiation preventing exhaust pipe is characterized by comprising an air pipe (1), a filling layer (2), a casing pipe (3) and a corrosion resisting layer (4), the air pipe (1) is installed in the casing pipe (3) in a sleeved mode, the filling layer (2) is located between the air pipe (1) and the casing pipe (3), and the corrosion resisting layer (4) covers the surface of the casing pipe (3). According to the exhaust pipe, the double-layer pipe arrangement is adopted, and therefore the radiation preventing ability is effectively ensured; as the air pipe and the casing pipe are arranged separately, the contact portion between the air pipe and the casing pipe can be effectively prevented being corroded; as the corrosion resisting layer is arranged on the outer layer, it is ensured that the exhaust pipe is prevented from being corroded by underground water and soil when deeply buried tens of meters underground, and the service life is long.