Fluidly driven control rod

Details Fluidly driven control rod Fluidly driven control rod

1974-04-22

1977-06-21

Feinberg, Samuel

91 49, 91224, 91417R, G21C 708

Patent

active

040309720

ABSTRACT:
A fluid driven actuator for a neutron absorber in a nuclear reactor is of the piston and cylinder type. The actuator is located above the reactor core. Means are provided for alternately opening and closing a by-pass fluid flow path or passage through or across the piston within the cylinder. The flow path is closed when the piston and control rod is being raised and is subsequently opened to reduce flow resistance during insertion or scram. In the preferred embodiment, the piston is longitudinally movable relative to the piston or extension rod which connects with the neutron absorber. In one position of the piston, the by-pass path is open and in another position, it it closed.

REFERENCES:
patent: 2161922 (1939-06-01), Goode
patent: 2855899 (1958-10-01), Beaty
patent: 3154472 (1964-10-01), Shannon

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