Reactor core cooling structure.

摘要

A reactor core cooling structure of the present invention comprises cooling gas flow-in slits (9a) for making a cooling gas flow in a circular reactor core, which slits are provided at an outer graphite cylinder (2a) for covering an outside of the circular reactor core; cooling gas flow-out slits (10a) for making the cooling gas flow in a circular reactor core, which slits are provided at an inner graphite cylinder (3a) for covering an inside of the circular reactor core; a circular cooling gas flow path (5a) that is provided at an outside of the outer graphite cylinder, and is connected to an inlet piping (7a) of the cooling gas at a foot of the outer graphite cylinder; and an inner cooling gas flow path (6a) that is provided at an inside of the inner graphite cylinder, and is connected to an outlet piping (8a) of the cooling gas at a foot of the inner graphite cylinder.