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Turbine blade tip with offset squealer

Patent ·
OSTI ID:873516
 [1]
  1. Niskayuna, NY
+ Show Author Affiliations
An industrial turbine assembly comprises a plurality of rotating blade portions in a spaced relation with a stationary shroud. The rotating blade includes a root section, an airfoil having a pressure sidewall and a suction sidewall defining an outer periphery and a tip portion having a tip cap. An offset squealer is disposed on the tip cap. The offset squealer is positioned inward from the outer periphery of the rotating blade. The offset squealer increases the flow resistance and reduces the flow of hot gas flow leakage for a given pressure differential across the blade tip portion so as to improve overall turbine efficiency.
Research Organization:
General Electric Company (Schenectady, NY)
DOE Contract Number:
FC21-95MC31176
Assignee:
General Electric Company (Schenectady, NY)
Patent Number(s):
US 6179556
OSTI ID:
873516
Country of Publication:
United States
Language:
English

References (2)

A Summary of the Cooled Turbine Blade Tip Heat Transfer and Film Effectiveness Investigations Performed by Dr. D. E. Metzger
  • Kim, Y. W.; Abdel-Messeh, W.; Downs, J. P.
  • ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition, Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration https://doi.org/10.1115/94-GT-167
conference February 2015
Cavity Heat Transfer on a Transverse Grooved Wall in a Narrow Flow Channel journal February 1989

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Related Subjects

/415/416/
airfoil
assembly
assembly comprises
blade
blade portions
blade tip
cap
comprises
defining
differential
disposed
efficiency
flow
flow resistance
gas
gas flow
hot
hot gas
improve
increases
industrial
inward
leakage
offset
outer
outer periphery
overall
periphery
plurality
portion
portions
positioned
pressure
pressure differential
reduces
relation
resistance
root
root section
rotating
rotating blade
section
shroud
sidewall
spaced
spaced relation
squealer
stationary
suction
tip
tip portion
turbine
turbine assembly
turbine blade
turbine efficiency
wall defining