公开(公告)号：US07149273B2

公开(公告)日：2006-12-12

申请号：US10989625

申请日：2004-11-16

申请人： Paul M. Evans ,  Gary C. Crabtree ,  Kevin G. Guthrie ,  Phillip L. Hazlett

发明人： Paul M. Evans ,  Gary C. Crabtree ,  Kevin G. Guthrie ,  Phillip L. Hazlett

IPC分类号： G21C3/34

CPC分类号： G21C3/352 ,  Y02E30/40

摘要： A method of fabricating a fuel assembly grid that includes providing a plurality of interconnected straps that form a lattice pattern, wherein the lattice pattern of the straps defines a plurality of cells, providing a sleeve that has a cylindrical portion and a flared portion, and inserting the sleeve into at least one of the cells. When inserted, at least a portion of the cylindrical portion of the sleeve will reside inside the cell and the flared portion will extend above the top end of the cell and overhang the perimeter of the cell. The flared portion is melted and flows over and fuses to the straps that define the cell. The straps may include weld tabs over which the melted material flows and to which it fuses. The melting and fusing steps also preferably cause any loose straps surrounding the cell to become attached to the sleeve.

公开(公告)号：US07822165B2

公开(公告)日：2010-10-26

申请号：US10751349

申请日：2004-01-05

申请人： Kirkland D. Broach ,  Carter E. Lunde ,  Phillip L. Hazlett

发明人： Kirkland D. Broach ,  Carter E. Lunde ,  Phillip L. Hazlett

IPC分类号： G21C15/00 ,  G21C19/28

CPC分类号： G21C3/3206 ,  G21Y2004/302 ,  Y02E30/40

摘要： A debris filter bottom nozzle for a nuclear fuel assembly having a support skirt and a top plate. The top nozzle plate has defined therethrough a plurality of flow holes. The axial bore through each flow hole is contoured as a venture. Preferably, the venturi is formed with a double chamfered inlet.

摘要翻译： 一种用于核燃料组件的碎屑过滤器底部喷嘴，其具有支撑裙和顶板。 顶部喷嘴板在其中限定了多个流动孔。 通过每个流孔的轴向孔作为风险。 优选地，文氏管形成有双倒角入口。