Patent Number: 054917336
Section: claims

1. A coolant diverter for a nuclear reactor fuel assembly having a plurality of substantially parallel elongated fuel rods and a spacer for positioning and laterally restraining the fuel rods, the coolant diverter for diverting at least a portion of liquid coolant in a two phase coolant flow onto adjacent fuel rods, the coolant diverter comprising: a stem portion;  a flared diverter portion being integrally formed with said stem portion so as to have a smooth, continuous trumpet-like outer surface, said diverter portion terminating in a sharp break end portion;  means for mounting said coolant diverter within the spacer, wherein said means for mounting includes a diverter tube, said stem portion being disposed within said diverter tube, said diverter tube also for guiding said two phase coolant flow along said coolant diverter.  a plurality of elongated full length fuel rods;  means for supporting said fuel rods in spaced, substantially parallel relation, said supporting means including a spacer for said rods;  a coolant diverter for diverting at least a portion of liquid coolant in a two phase coolant flow onto adjacent fuel rods, the diverter having an elongated stem portion and a flared diverter portion being integrally formed with said stem portion so as to have a smooth, continuous trumpet-like outer surface, the flared diverter portion terminating in a sharp break end portion;  means for mounting said coolant diverter in the spacer, wherein said mounting means includes a diverter tube for mounting the stem portion of said coolant diverter and for guiding the two phase coolant flow along said coolant diverter.  a coolant diverter for diverting at least a portion of liquid coolant in a two phase coolant flow onto adjacent fuel rods, the coolant diverter including a stem portion and a flared diverter portion integrally formed with said stem portion so as to have a smooth, continuous trumpet-like outer surface; the flared diverter portion terminating in a sharp break end portion;  means for mounting said coolant diverter in said fuel rod spacer downstream of said part length fuel rod, wherein said mounting means includes a diverter tube for mounting said coolant diverter and for guiding the two phase coolant flow along said coolant diverter; said stem portion being fixedly arranged within said diverter tube.  a coolant diverter for diverting at least a portion of liquid coolant in a two phase coolant flow onto adjacent fuel rods, the coolant diverter including a stem portion and a flared diverter portion integrally formed with said stem portion so as to have a smooth, continuous trumpet-like outer surface; the flared diverter portion terminating in a sharp break end portion;  means for mounting said coolant diverter in said fuel rod spacer between adjacent fuel rods, wherein said mounting means includes a diverter tube for mounting said coolant diverter and for guiding the two phase coolant flow along said coolant diverter; said stem portion being fixedly arranged within said diverter tube. 2. The coolant diverter of claim 1 wherein said stem portion is an elongated portion having a first diameter and said end portion has a second diameter greater than said first diameter. 3. A nuclear fuel reactor fuel assembly comprising; 4. The nuclear fuel assembly of claim 3 wherein said fuel assembly includes a part length fuel rod and wherein said coolant diverter is positioned downstream of said part length fuel rod. 5. The nuclear fuel assembly of claim 3 wherein said coolant diverter is positioned in the spacer between adjacent fuel rods. 6. In a nuclear reactor fuel assembly having plurality of elongated, substantially parallel fuel rods including at least one part length fuel rod and a fuel rod spacer, the improvement comprising: 7. In a nuclear reactor fuel assembly having plurality of elongated, substantially parallel fuel rods, and a fuel rod spacer, the improvement comprising: