Steam generator feedwater distribution system

Patent · Tue May 25 00:00:00 EDT 1993

OSTI ID:6505140

Wilson, R M; Chan, K W; Ford, D E

A method for substantially uniformly mixing feedwater with recirculating water in a steam generator, having a shell, a wrapper, an annular down comer region positioned between said shell and said wrapper, an inlet nozzle, a tube bundle positioned within said wrapper and a distribution device, comprising the steps of: directing the flow of said feedwater from said inlet nozzle into said distribution device and circumferentially in both directions around at least a portion of aid annular down comer region; directing the flow of said feedwater uniformly distributed around said wrapper in an ascending direction in said distribution device toward a downwardly directing means of said distribution device; discharging said feedwater from said downwardly directing means into said down comer region; and mixing said feedwater exiting said downwardly directing means with descending recirculating water in said down comer region of said steam generator prior to entry of said feedwater into said tube bundle for providing a substantially uniform mixture of said feedwater and said recirculating water for reducing thermal shock and water hammer to said steam generator.

• Assignee: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• Patent Number(s): US 5213065; A
• Application Number: PPN: US 7-749363
• OSTI ID: 6505140
• Resource Relation: Patent File Date: 23 Aug 1991
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
FEEDWATER
DISTRIBUTION
MATERIALS HANDLING EQUIPMENT
DESIGN
CONTROL
FLOWMETERS
MIXING
STEAM GENERATORS
THERMAL SHOCK
WATER HAMMER
BOILERS
EQUIPMENT
HYDROGEN COMPOUNDS
MEASURING INSTRUMENTS
METERS
OXYGEN COMPOUNDS
VAPOR GENERATORS
WATER
200104* - Fossil-Fueled Power Plants- Components