Device for adjusting a supply water flowrate in a steam generator tube
AssigneeFramatome
InventorsGerard Stalport, Benoit Giraud, Valerie Andujar
Life of this patent
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Abstract
A removable flow rate-restricting device (25) is placed and fixed in a through-opening (18) of the tube plate (15) level with which is fixed the tube (6), from inside the water box (9). The flow rate-restricting device (25) includes an orifice plate which is inserted into the opening (18) of the tube plate.
Claims8
In a steam generator comprising a tube plate, a plurality of openings passing through the tube plate and opening out into a water-box for supplying the steam generator, and a plurality of tubes each having an end fixed to a face of the tube plate in alignment with a said through opening, the improvement comprising a device for adjusting a supply water flow rate in at least one tube including a flow rate restricting orifice plate inserted into a said through opening of said tube plate and means for fixing said orifice plate into said tube plate.
Dependencies are inferred from the claim text.