Airtight door for nuclear power

The utility model discloses a nuclear power airtight door which comprises a door frame, a transverse sliding groove is formed in the upper portion of the door frame, a door body is arranged in the transverse sliding groove in a hanging mode, a hanging shaft is arranged at the position, corresponding to the transverse sliding groove, of the door body, the hanging shaft is sleeved with a pulley, and the pulley is installed in the transverse sliding groove in an embedded mode. Longitudinal sliding grooves are formed in the positions, corresponding to the door frame, of the transverse sliding grooves, lock catches are arranged on the two sides, corresponding to the door body, of the door frame, and lock rods are arranged on the positions, corresponding to the lock catches, of the door body. The door body slides to the door frame along the transverse sliding grooves through the pulleys, then force is exerted in the direction of the door frame to enable the door body to move towards the door frame along the longitu