Induced nuclear reactions: processes – systems – and elements – Reactor structures – Circulating fluid within reactor
Patent
1991-02-25
1991-12-17
Hunt, Brooks H.
Induced nuclear reactions: processes, systems, and elements
Reactor structures
Circulating fluid within reactor
376404, 376406, G21C 1524
Patent
active
050733354
ABSTRACT:
A recirculation system is disclosed for driving reactor coolant water in an annular downcomer defined between a reactor vessel and a core shroud spaced radially inwardly therefrom. The system supplies feedwater to the vessel and to a turbopump disposed inside the downcomer. The turbopump in accordance with one embodiment of the present invention includes a stationary axle and a pump impeller rotatably joined thereto and having an inlet end for receiving the coolant water from the downcomer. An annular plenum surrounds the impeller for channeling feedwater to a plurality of turbine blades joined to the impeller for rotating the impeller for driving the coolant water. The impeller is lubricated solely by the feedwater upon rotation of the impeller about the axle.
REFERENCES:
patent: 4879087 (1989-11-01), Akiyama et al.
patent: 5009838 (1991-04-01), Shioyama et al.
Wilkins et al., Advanced BWR: Design Improvements Build on Proven Technology, Nuclear Engineering International, reprint Jun. 1986, pp. 1-7 and drawing entitled "The World's Reactors No 89".
General Electric Company
Hunt Brooks H.
Schroeder Robert R.
Voss Frederick H.
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