Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Cooling circuit for steam and air-cooled turbine nozzle stage

Patent ·
OSTI ID:874517
 [1];  [2]
  1. Clifton Park, NY
  2. Guilderland, NY
+ Show Author Affiliations
The turbine vane segment includes inner and outer walls with a vane extending therebetween. The vane includes leading and trailing edge cavities and intermediate cavities. An impingement plate is spaced from the outer wall to impingement-cool the outer wall. Post-impingement cooling air flows through holes in the outer wall to form a thin air-cooling film along the outer wall. Cooling air is supplied an insert sleeve with openings in the leading edge cavity for impingement-cooling the leading edge. Holes through the leading edge afford thin-film cooling about the leading edge. Cooling air is provided the trailing edge cavity and passes through holes in the side walls of the vane for thin-film cooling of the trailing edge. Steam flows through a pair of intermediate cavities for impingement-cooling of the side walls. Post-impingement steam flows to the inner wall for impingement-cooling of the inner wall and returns the post-impingement cooling steam through inserts in other intermediate cavities for impingement-cooling the side walls of the vane.
Research Organization:
General Electric Company (Schenectady, NY)
DOE Contract Number:
FC21-95MC31176
Assignee:
General Electric Company (Schenectady, NY)
Patent Number(s):
US 6406254
OSTI ID:
874517
Country of Publication:
United States
Language:
English

References (2)

Advances in Steam Path Technology journal April 1996
Development Requirements for an Advanced Gas Turbine System journal October 1995

Similar Records

Film cooling for a closed loop cooled airfoil
Patent · Tue Dec 31 23:00:00 EST 2002 · OSTI ID:874986
Nozzle cavity impingement/area reduction insert
Patent · Mon Dec 31 23:00:00 EST 2001 · OSTI ID:874818
Steam exit flow design for aft cavities of an airfoil
Patent · Mon Dec 31 23:00:00 EST 2001 · OSTI ID:874478

Related Subjects

/415/
afford
air
air flow
air-cooled
air-cooling
cavities
cavity
circuit
cooling
edge
extending
film
flows
form
holes
impingement
impingement-cool
impingement-cooling
inner
insert
inserts
intermediate
leading
nozzle
openings
outer
pair
passes
plate
post-impingement
provided
returns
segment
sleeve
spaced
stage
steam
steam flow
supplied
therebetween
thin-film
trailing
turbine
turbine vane
vane
wall
walls