| 摘要 |
1. Device for collecting and separating liquid metal in a fast-neutron nuclear reactor of the integrated type, incorporating a vessel (27) with symmetry of revolution around a vertical axis, a core (30) immersed in the liquid metal filling the vessel, and pumps (25) for circulating the liquid metal, and heat exchangers (26) for cooling the liquid metal leaving the core (30), which are immersed in this liquid metal and arranged vertically in the vessel, at a substantially equal distance from the axis of the latter, the pumps (25) abstracting the cold liquid metal leaving the exchangers (26) to convey it to the base of the core and the heat exchangers incorporating an inlet window (39) in their upper part through which the hot liquid metal leaving the core (30) enters and an outlet window (38) in their lower part through which the cold liquid metal leaves, characterised in that it comprises : - a toric metal enclosure (35) of circular cross-section, arranged with its axis of revolution coincident with the axis of the vessel (27) at the lower part of the latter vertically relative to the pumps (25) and heat exchangers (26) resting on the core (30) support and comprising, in its wall in its upper part, orifices (40, 60) centred on the upper director circle of the toric enclosure (35) corresponding to each of the pumps (25) and to each of the exchangers (26) for the passage of their lower part comprising the suction orifices and the outlet windows (38), respectively, into the inner volume of the toric enclosure (35), and - a vertical wall for separating the hot liquid metal from the cold liquid metal, fixed on the toric enclosure (35) above the latter and consisting of passage shafts (37a) for the pumps (25) and the passage shafts (37b) for the heat exchangers (26), arranged in the region of the corresponding openings (40, 60) of the pumps and exchangers and of connecting walls (44, 64c, 65c) between these shafts (37) to form a continuous wall along the periphery of the vessel (27). |
