| 摘要 |
<p>1,139,760. Fast breeder reactors. UNITED STATES ATOMIC ENERGY COMMISSION. 4 April, 1968 [26 May, 1967], No. 16187/68. Heading G6C. A fuel module forming part of the core or blanket of a breeder reactor comprises a shell 11 of hexagonal cross - section having an inlet 12 and outlet 37 for liquid sodium coolant, the coolant flowing through tubes 21 connected between lower and upper end plates 14, 22. The fuel is in the form of a slurry consisting of particles of plutonium dioxide and uranium dioxide in a fluidizing medium of liquid sodium and is initially admitted through a pipe 33. The fluidizing medium maintains an expanded bed 40 of fuel between a distributer plate 24 and a level control screen 30, this medium being kept in circulation and leaving through a pipe 36. Movement of the fluidizing medium through the expanded bed 40 is made possible by providing clearance spaces around the tubes 21 in their passage through the plate 24 and intermediate baffles 27. The baffles serve to prevent circulation of the bed 40 and thus enable an axial temperature gradient to be formed in the module. The fuel may be discharged by applying fluidizing medium to an inlet 34.</p> |
