Shroud leakage flow discouragers

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874247

Bailey, Jeremy Clyde ^[1]; Bunker, Ronald Scott ^[2]

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1. Middle Grove, NY
2. Niskayuna, NY

A turbine assembly includes a plurality of rotor blades comprising a root portion, an airfoil having a pressure sidewall and a suction sidewall, and a top portion having a cap. An outer shroud is concentrically disposed about said rotor blades, said shroud in combination with said tip portions defining a clearance gap. At least one circumferential shroud leakage discourager is disposed within the shroud. The leakage discourager(s) increase the flow resistance and thus reduce the flow of hot gas flow leakage for a given pressure differential across the clearance gap to improve overall turbine efficiency.

• Research Organization: General Electric Co., Schenectady, NY (United States)
• DOE Contract Number: FC21-95MC31176
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 6350102
• OSTI ID: 874247
• Country of Publication: United States
• Language: English

Related Subjects

shroud
leakage
flow
discouragers
turbine
assembly
plurality
rotor
blades
comprising
root
portion
airfoil
pressure
sidewall
suction
top
cap
outer
concentrically
disposed
combination
tip
portions
defining
clearance
gap
circumferential
discourager
increase
resistance
reduce
hot
gas
differential
improve
overall
efficiency
gas flow
hot gas
pressure differential
concentrically disposed
turbine assembly
rotor blade
root portion
/415/