Title: Airfoil cooling with internal cavity displacement features

Abstract

A turbine airfoil including a central cavity defined by an outer wall including pressure and suction sides extending between and joined at leading and trailing edges, and a chordal axis extends generally centrally between the pressure and suction sides. Rib structures located in the central cavity define radial central channels extending across the chordal axis. Radial near wall passages are defined between the rib structures and each of the pressure and suction sides of the outer wall. The radial near wall passages are each open to an adjacent central channel along a radial extent of both the near wall passages and the adjacent central channel to define a radial flow pass associated with each central channel. The flow passes are connected in series to form a serpentine cooling path extending in the direction of the chordal axis.

Inventors:

Marsh, Jan H.; Messmann, Stephen John

Issue Date:

2019-10-01

Research Org.:

Siemens Energy, Inc., Orlando, FL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1576251

Patent Number(s):

10428686

Application Number:

15/128,492

Assignee:

Siemens Energy, Inc. (Orlando, FL)

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

F01D25/12 - Cooling
F01D5/08 - Heating, heat-insulating or cooling means {
F01D5/18 - Hollow blades, {i.e. blades with cooling or heating channels or cavities
F01D5/187 - {Convection cooling}
F01D5/188 - {with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall}
F01D9/041 - {using blades

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

F05D2220/32 - in gas turbines
F05D2240/123 - related to the pressure side of a stator vane
F05D2240/124 - related to the suction side of a stator vane
F05D2250/185 - serpentine-like
F05D2260/221 - Improvement of heat transfer
F05D2260/2214 - by increasing the heat transfer surface
F05D2260/22141 - using fins or ribs

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DOE Contract Number:  

FC26-05NT42644

Resource Type:

Patent

Resource Relation:

Patent File Date: 2014 May 08

Country of Publication:

United States

Language:

English

Subject:

33 ADVANCED PROPULSION SYSTEMS