Combined jet pump and internal pump rercirculation system

Details Combined jet pump and internal pump rercirculation system Combined jet pump and internal pump rercirculation system

1993-04-15

1994-03-15

Voss, Frederick H.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Circulating fluid within reactor

376370, G21C 1524

Patent

active

052951715

ABSTRACT:
A recirculation system for driving reactor coolant water in a downcomer within a reactor pressure vessel includes a jet pump disposed in the downcomer and having a suction inlet at the top thereof and an outlet at the bottom thereof. A reactor internal pump is joined directly to the pressure vessel at an access nozzle thereof and includes a housing sealingly joined to the access nozzle, and in serial flow communication an inlet channel, an impeller, an outlet channel, and an injector nozzle. The inlet channel carries coolant water from the pressure vessel to the impeller which pressurizes the coolant water and returns it through the outlet channel and the injector nozzle for injection into the jet pump inlet. The water injected from the internal pump into the jet pump drives the jet pump for effecting recirculation flow within the pressure vessel.

REFERENCES:
patent: 3437559 (1969-04-01), Junbermann et al.
patent: 3838002 (1974-09-01), Gluntz et al.
patent: 4663116 (1987-05-01), Masuhara et al.
patent: 4696792 (1987-09-01), Hobson
patent: 4847043 (1989-06-01), Gluntz
patent: 5082620 (1992-01-01), Fennern
patent: 5124115 (1992-06-01), Dillmann
patent: 5124115 (1992-06-01), Dillmann

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