| 摘要 |
1,146,012. Tubular heat exchangers. SULZER BROS. Ltd. 11 March, 1966 [12 March, 1965], No. 10820/66. Heading F4S. A heat exchanger, for use in a nuclear reactor (Fig. 1, not shown), beneath a reactor core (R) and within the reactor concrete shell (B), comprises a number of parallel connected heat exchanger units, of which only two 1, 2 are shown, the units being spaced apart and having disposed within them closed parallel finned coils 3, for the coolant, and having their top and bottom ends open for the passage through the unit of the reactor coolant gas, such as carbon dioxide. Each unit has a framework, on which the coils 3 are supported, comprising vertical support struts 6 to which are welded transverse struts 7, the struts defining a longitudinal wall having apertures which permit communication between the space 13 and the interior of the adjacent units. Alternatively, the adjacent unit walls may be formed imperforate to prevent such communication, in which case bridge members 17 are removed and a different support structure 19 provided. In either case straight through flow of reactor gas through the space 13 is prevented either by baffle members 14, extending between adjacent struts 7, or by channel-like members 18, resting on two adjacent struts, so ensuring the absence of adverse temperature and pressure gradients across a unit wall. Similar baffle members may be provided between the outermost heat exchanger units and a casing (20, Fig. 4, not shown), surrounding the same, or alternatively, cover-plates (A, Fig. 1), are made to extend between the outermost exchange units and the reactor shell. |
