Pressurized-water-cooled nuclear reactor with compact steam generators
AssigneeDel Nova Vis S.R.L.
InventorLuciano Cinotti
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Abstract
A nuclear reactor cooled with pressurized water, having a pressurized tank installed in which are compact steam generators; each steam generator comprises a plurality of heat-exchange tubes having respective spiral portions set in levels on top of one another to form at least one annular tube bundle delimiting a substantially cylindrical internal central zone, pre-arranged for supply from above with primary water, which then traverses the tube bundle radially.
Claims21
A pressurized-water-cooled nuclear reactor (1), comprising a pressurized tank (2), which houses a core (4), a hot header (6) over the core (4), and a cold header (7) surrounding the hot header and separated from the hot header by a separation structure (5) and in which primary water constituting a core cooling fluid circulates;
- the reactor comprising at least one compact steam generator (11), positioned in the cold header (7) and in which secondary water circulates for removing heat from the primary water;
- the reactor being characterized in that the steam generator (11) comprises a plurality of heat-exchange tubes (21) in which the secondary water circulates and which have respective substantially plane spiral portions (37) set on top of one another in a number of levels to form a substantially annular tube bundle (20) delimiting a substantially cylindrical central zone (22), which houses a supply duct (18) in which the pressurized primary water coming from the hot header (6) flows downwards.
Dependencies are inferred from the claim text.