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US 4,262,637 AGranted
Vapor generator
AssigneeThe Babcock & Wilcox Company
InventorMurray Wiener
Life of this patent
Estimating the term…
Abstract
A pair of parallel fluid flow connected steam-water drums and associated piping for natural or assisted circulation steam generators including downcomer pipes for receiving water from the drums and being disposed below and in equispaced relationship with the drums. A plurality of supply tubes for connecting the downcomer pipes with each drum, the supply tubes being equally divided between the drums; and a plurality of riser tubes for delivering a steam-water mixture to the drums, the riser tubes being equally divided between the drums.
Claims4
In combination with a steam generator including:
- a pair of steam-water drums, each drum having an upper steam space and a lower water space,
- tubes uniformly interposed between the drums for connecting the steam and water spaces respectively,
- downcomer pipes of equal cross-sectional flow area for receiving water from the drums, the downcomer pipes being disposed below and in equispaced relationship with respect to the drums,
- supply tubes of equal cross-sectional flow area connecting the downcomer pipes with each drum, the supply tubes for each downcomer pipe being arranged symmetrically with respect to both drums and equally divided between the drums, the total cross-sectional flow area of the supply tubes connected to each downcomer pipe being greater than the cross-sectional flow area of the downcomer pipe,
- generating tubes for supplying a steam-water mixture for delivery to the drums,
- headers, flow connected to the generating tubes, and riser tubes of equal cross-sectional flow area disposed to receive the steam-water mixture from the headers, the riser tubes being alternately routed and equally divided between said drums and connected thereto.
3 more elements
Dependencies are inferred from the claim text.