Blowdown arrangement
AssigneeWestinghouse Electric Corp.
InventorRobert R. Bennett
Life of this patent
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Abstract
A steam generator having a U-shaped tube bundle which extends upwardly from a tube sheet, a wrapper encircling the tube bundle, a preheater disposed on the cold leg portion of the tube bundle and a distribution plate disposed adjacent the tube sheet, the distribution plate having a large semicircular shaped opening disposed in the central portion of the hot leg and a T-shaped blowdown pipe disposed so that the cross of the "T" is disposed adjacent the tube sheet and the central portion of the semicircular opening in the distribution plate.
Claims4
A vapor generator which utilizes a primary fluid to vaporize a secondary fluid, said vapor generator comprising a vertical shell portion, a tube sheet disposed adjacent one end of said shell, a tube bundle formed by a plurality of U-shaped tubes through which the primary fluid flows to form a hot leg portion and a cold leg portion, a wrapper encircling said tubes and forming an annular chamber between said wrapper and said shell, a flow distribution plate adjacent said tube sheet, said flow distribution plate having a large opening containing a plurality of tubes, said large opening being centrally disposed with respect to said hot leg portion of said tube bundle, and a blowdown tube disposed between said tube sheet and said distribution plate and generally traversing said large opening, said blowdown tube having a plurality of apertures disposed to remove secondary fluid from an area adjacent said tube sheet.
Dependencies are inferred from the claim text.