Turbomachine rotor with improved cooling

Patent · Thu Jan 01 04:00:00 EST 1998

OSTI ID:871567

Hultgren, Kent Goran ^[1]; McLaurin, Leroy Dixon ^[2]; Bertsch, Oran Leroy ^[3]; Lowe, Perry Eugene ^[4]

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1. Winter Park, FL
2. Winter Springs, FL
3. Titusville, FL
4. Oviedo, FL

A gas turbine rotor has an essentially closed loop cooling air scheme in which cooling air drawn from the compressor discharge air that is supplied to the combustion chamber is further compressed, cooled, and then directed to the aft end of the turbine rotor. Downstream seal rings attached to the downstream face of each rotor disc direct the cooling air over the downstream disc face, thereby cooling it, and then to cooling air passages formed in the rotating blades. Upstream seal rings attached to the upstream face of each disc direct the heated cooling air away from the blade root while keeping the disc thermally isolated from the heated cooling air. From each upstream seal ring, the heated cooling air flows through passages in the upstream discs and is then combined and returned to the combustion chamber from which it was drawn.

• Research Organization: WESTINGHOUSE ELECTRIC CORP
• DOE Contract Number: AC21-93MC30247
• Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
• Patent Number(s): US 5755556
• OSTI ID: 871567
• Country of Publication: United States
• Language: English

Related Subjects

/416/60/
air
air drawn
air flow
air flows
air passage
air passages
attached
blade
blade root
blades
chamber
charge air
closed
closed loop
combined
combustion
combustion chamber
compressed
compressor
compressor discharge
cooled
cooling
cooling air
direct
directed
disc
discharge
discharge air
discs
downstream
drawn
essentially
flows
formed
gas
gas turbine
heated
improved
improved cooling
isolated
keeping
loop
loop cooling
machine rotor
passages
passages formed
returned
rings
rings attached
root
rotating
rotating blade
rotor
rotor disc
scheme
seal
seal rings
supplied
thermally
thermally isolate
turbine
turbine rotor
turbomachine
upstream