| 摘要 |
1,083,173. Cooling reactors. GENERAL DYNAMICS CORPORATION. Aug. 3, 1965 [Aug. 10, 1964], No. 33123/65. Heading G6C. [Also in Division F1] A gas-cooled nuclear reactor has six gas circulators 27 arranged in the annular space formed between the reactor core 25 and its outer prestressed concrete pressure vessel (not shown) encased in steel or the like. The concrete pressure vessel has a hexagonal outer surface and an insulated cylindrical inner surface and is closed at its upper and lower ends, the upper closing wall being provided with a number of openings for access to the core and circulators. Hot gas, preferably helium, passes from the core through ducts 74 to a turbine 28 in each circulator, and then through apertures 102 to a pair of steam generators 26. The gas passes from the steam generators through ducts 112 to a compressor 30 which forces the gas through a duct 118, a control valve 119 and a generally flat duct 76 back to the core. The core is formed of a generally cylindrical bundle of vertically-extending fuel and control rod elements surrounded by a reflector structure 58 enclosed in a cylinder 60. An emergency cooling system for the reactor may be provided in the annular space between core and pressure vessel.
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