公开(公告)号：US4154650A

公开(公告)日：1979-05-15

申请号：US573429

申请日：1975-05-01

申请人： Robert F. Prescott ,  Brian V. George ,  Colin J. Baglin

发明人： Robert F. Prescott ,  Brian V. George ,  Colin J. Baglin

IPC分类号： G21C5/10 ,  G21C11/08 ,  G21C9/00

CPC分类号： G21C11/081 ,  G21C5/10 ,  Y02E30/40

摘要： In a nuclear reactor (e.g. one having coolant down-flow through a core to a hearth below) thermal insulation (e.g. of a floor of the hearth) comprises a layer of bricks and a layer of tiles thereon, with smaller clearances between the tiles than between the bricks but with the bricks being of reduced cross-section immediately adjacent the tiles so as to be surrounded by interconnected passages, of relatively large dimensions, constituting a continuous chamber extending behind the layer of tiles. By this arrangement, lateral coolant flow in the interbrick clearances is much reduced.The reactor core is preferably formed of hexagonal columns, supported on diamond-shaped plates each supported on a pillar resting on one of the hearth-floor tiles. Each plate has an internal duct, four upper channels connecting the duct with coolant ducts in four core columns supported by the plate, and lower channels connecting the duct to a downwardly-open recess common to three plates, grouped to form a hexagon, at their mutually-adjacent corners. This provides mixing, and temperature-averaging, of coolant from twelve columns.

摘要翻译： 在一个核反应堆（例如一个有冷却剂通过一个核心到下面的炉底下流），绝热（例如炉膛的地板）包括一层砖和一层瓷砖，瓷砖之间的间隙较小 在砖块之间，但是砖块紧邻瓦片的横截面减小，以便由具有较大尺寸的相互连接的通道包围，构成在瓷砖层之后延伸的连续室。 通过这种布置，跨板间隙中的横向冷却剂流动大大减少。