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AssigneeWestinghouse Electric Corp.
InventorsRobert L. Sylvester, Randall C. Johnson, Gregory V. Smith, King W. Chan, Willis B. Middlebrooks, III, Jawahar K. Visaria, Robert M. Wilson, George Bieberbach
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This patent discloses a secondary fluid supply system for a steam generator used in nuclear reactor power plants. The secondary fluid supply system comprises a secondary fluid (feedwater) inlet nozzle near the base of the steam generator shell, a feedwater riser pipe spaced between the shell of the steam generator and the tube bundle wrapper, the upper end of the feedwater riser pipe being connected to a distribution ring having a plurality of spray nozzles positioned in the recirculating pool above the top of the U-shaped heat exchanger tubes.
In a steam generator comprised of a generally cylindrical steel shell containing a plurality of U-shaped heat exchanger tubes connected to a heated primary fluid inlet and outlet in the base of the steel shell and having a steam outlet at the top of the steel shell, the improvement being a secondary fluid supply system comprising a secondary fluid inlet nozzle in said steel shell near the base thereof and connected to a riser pipe spaced between the inside surface of said steel shell and a cylindrical tube bundle wrapper and connected to a distribution ring positioned in an upper recirculating pool above the tops of the U-shaped heat exchanger tubes, said distribution ring having a plurality of spray nozzles adapted to introduce the secondary fluid into the recirculating pool.
Dependencies are inferred from the claim text.