| 摘要 |
<p>A nuclear reactor cooled by a liq. metal, e.g. sodium, has the sodium contained in a principal vessel sepd. into two parts one hot and one cold. Sepn. is by a metal wall forming an inner vessel, which contains the core and the hot metal. The inner vessel consists of upper and lower cylindrical parts of diameters about equal to those of the principal vessel and of the core respectively, connected by a conical part. The inner vessel and the cylindrical enclosures are given a shape constituted by a surface of revolution generated by an arc, at the place where the sodium feed holes are located, either over their whole circumferences, or locally. The cylindrical enclosures are attached to the inner vessel at this place by an element of toric form, concave outwards. Thermal protection of the inner vessel and the cylindrical enclosures is provided by walls. This method of direct connection of the enclosures of the inner vessel without intermediate piping, gives good distribution of the stresses caused by the weight of the enclosures.</p> |
