| 摘要 |
<p>A cooling system (10) for a nuclear reactor (1), in particular a liquid-metal- or molten-salt-cooled nuclear reactor, wherein first conducting means (12) for conducting a primary coolant (5) define, inside a vessel (2) of the nuclear reactor (1), a primary cooling circuit (13) between a reaction core (4) and at least one main heat exchanger (11) in which a secondary coolant (15) withdraws heat from the primary coolant (5); according to the invention, the secondary coolant (15) is a low-vapour-pressure fluid, e.g. a synthetic oil, immiscible with and of a lower density than the primary coolant (5); and, to safeguard against the secondary coolant (15) reaching the core (4) in the event of an accident, there are provided fluid dynamic connecting means (40) located along the primary cooling circuit (13) and in parallel with the main heat exchanger (11), and means for limiting the circulation speed of the primary coolant (5) in the primary cooling circuit to a value below or equal to the float-up speed of the secondary coolant (15) within the primary coolant (5).</p> |
