Steam generator that includes a feedwater delivery device

Details Steam generator that includes a feedwater delivery device Steam generator that includes a feedwater delivery device

2007-02-20

2007-02-20

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Feed heaters

Spray to steam space

C122S412000, C122S414000

Reexamination Certificate

active

10767992

ABSTRACT:
The steam generator includes a feedwater delivery device at an upper axial end of an annular space between an outer shell and a bundle wrapper of the steam generator. The feedwater, delivery device includes a header (11) having a shell of toroidal general shape, at least one feed pipe for the header and feedwater distribution means (14) in the upper part of the annular space of the steam generator. The feedwater distribution means (14) include a plurality of openings (17) that pass through the upper part of the shell of the toroidal header (11) and are distributed circumferentially on the wall of the header and a plurality of tubes (15) fixed via a lower end part at an opening (17) of the header (11). Each of the straight tubes (15) includes an upper end part through which openings (20), such as water passage slots, pass and a cap (16) fixed to the upper end of the tube (15) surrounding, with a radial clearance, the upper end part of the tube (15). In this way, the feedwater is properly distributed and foreign bodies possibly contained in the feedwater are trapped.

REFERENCES:
patent: 3661123 (1972-05-01), Romanos
patent: 3991720 (1976-11-01), Byerley
patent: 4502419 (1985-03-01), Smith, Jr.
patent: 4917146 (1990-04-01), Sundheimer et al.
patent: 5083529 (1992-01-01), Sundheimer
patent: 5390219 (1995-02-01), Poussin et al.
patent: 6173680 (2001-01-01), Dague et al.
patent: 2778223 (1999-11-01), None
patent: 10122502 (1998-05-01), None
French Search Report dated Nov. 5, 2003, 2 pages.

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