公开(公告)号：EP2345039A1

公开(公告)日：2011-07-20

申请号：EP09763902.5

申请日：2009-11-11

申请人： Areva NP GmbH

发明人： STABEL, Jürgen ,  KIEHLMANN, Horst-Dieter ,  DRESSEL, Bernd

IPC分类号： G21C3/322 ,  G21C3/326 ,  G21C3/352

CPC分类号： G21C3/322 ,  G21C3/326 ,  G21C3/352 ,  G21Y2004/302 ,  Y02E30/32 ,  Y02E30/38

摘要： In a fuel element for a pressurized-water reactor, in addition to spacers (6), flow-guiding structural parts (8) are arranged which comprise four outer webs (20) which, in a plane oriented perpendicularly to the central longitudinal axis (4), surround a square inner region (24) of which the centre point (M) lies on the central longitudinal axis (4). At their lower longitudinal side facing the flowing cooling water in the operating state, the outer webs are provided with deflection lugs (30) pointing towards the inner region and are structurally identical, wherein mutually opposite outer webs (20) are arranged mirror-symmetrically with respect to a centre plane (21) extending in the axial direction. Such a structural part (8) forms, at most for a number of fuel rods (2) which is smaller than their total number in the fuel element, cells (12) through which a respective fuel rod (2) is guided, wherein the number of these cells (27), which are situated in a row (14) or column (16), is smaller than the number of the fuel rods (2) respectively situated in this row (14) or column (16).