Double tube helical coil steam generator

Patent · Tue Feb 24 04:00:00 EST 1987

OSTI ID:7071729

Garabedian, G; De Luca, R A

A steam generator is described comprising a container having a closed lower end, divided into longitudinally arranged sections including an uppermost disengaging chamber, an upper plenum, and a lower plenum. The upper plenum is above the lower plenum and contains a multiplicity of double tube helical coils, wherein each of the double tube helical coils is comprised of an inner tube individually enclosed for at least a portion of its length by an outer tube to form a double tube portion and thereby define an annular gap which is outside the inner tube but enclosed by the outer tube; the inner tube being attached at one end to a feedwater inlet, and the inner tube being attached at the other end to a steam outlet; the outer tube being in open communication at both ends with the disengaging chamber; the double tube portion being in the configuration of a helix for part of its length; the upper plenum having no communication with the disengaging chamber and having restricted communication with the lower plenum such that liquid metal entering the upper plenum and flowing to the lower plenum closely contacts at least a portion of the double tube helical coils; and the annular gap being at least partially filled with liquid metal.

• Assignee: Stone and Webster Engineering Corp., Boston, MA
• Patent Number(s): US 4644906
• OSTI ID: 7071729
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
BOILERS
CONTAINERS
DESIGN
FEEDWATER
HEAT EXCHANGERS
HYDROGEN COMPOUNDS
INTAKE STRUCTURES
MECHANICAL STRUCTURES
OPERATION
OXYGEN COMPOUNDS
STEAM GENERATORS
TUBES
VAPOR GENERATORS
WATER