公开(公告)号：US5406599A

公开(公告)日：1995-04-11

申请号：US225038

申请日：1994-04-08

申请人： Garrett Johnson, Jr. ,  Raymond A. King ,  Elbert C. Minnick, III

发明人： Garrett Johnson, Jr. ,  Raymond A. King ,  Elbert C. Minnick, III

IPC分类号： G21C3/34 ,  G21C21/00

CPC分类号： G21C3/3424 ,  G21Y2002/302 ,  G21Y2004/40 ,  G21Y2004/501 ,  Y02E30/40 ,  Y10T29/531

摘要： A weld fixture for receiving and aligning the fuel rod contact points of a nuclear fuel bundle spacer grid. Two plates are provided with intersecting unequally spaced slots that define polygons on one side of each plate. Both plates have bores therethrough substantially at the slot intersections and in the slots adjacent the outer edges of the plates. Bores are provided through both plates in polygons that correspond to fuel assembly guide tube and instrument tube locations. These positions receive guide cell pins during use, some of which are hollow and are used to bolt the plates together over the spacer grid strips. Bores in each plate through the defined polygons receive alignment pins. Guide rods receive and align the plates through corner bores in each plate. The slots and pins in the facing plates align the critical fuel rod contact points in the spacer grid during the intersection welding process.

摘要翻译： 用于接收和对准核燃料束隔离栅格的燃料棒接触点的焊接夹具。 两个板设置有相互不等间隔的槽，其在每个板的一侧上限定多边形。 两个板都具有穿过其中的孔，其基本上在槽交叉点处和与板的外边缘相邻的槽中。 通过对应于燃料组件引导管和仪器管位置的多边形中的两个板提供孔。 这些位置在使用期间接收引导单元销，其中一些是中空的，并且用于将板螺栓连接在间隔网格条上。 每个板中的孔通过定义的多边形接收对准引脚。 导杆通过每个板中的角孔接收和对准板。 面对板中的槽和销在交叉焊接过程中对准间隔栅格中的关键燃料棒接触点。