Title: Cooled airfoil in a turbine engine

Abstract

An airfoil in a gas turbine engine includes an outer wall and an inner wall. The outer wall includes a leading edge, a trailing edge opposed from the leading edge in a chordal direction, a pressure side, and a suction side. The inner wall is coupled to the outer wall at a single chordal location and includes portions spaced from the pressure and suction sides of the outer wall so as to form first and second gaps between the inner wall and the respective pressure and suction sides. The inner wall defines a chamber therein and includes openings that provide fluid communication between the respective gaps and the chamber. The gaps receive cooling fluid that provides cooling to the outer wall as it flows through the gaps. The cooling fluid, after traversing at least substantial portions of the gaps, passes into the chamber through the openings in the inner wall.

Inventors:

Vitt, Paul H; Kemp, David A; Lee, Ching-Pang; Marra, John J

Issue Date:

2015-04-21

Research Org.:

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

Sponsoring Org.:

USDOE

OSTI Identifier:

1178272

Patent Number(s):

9011077

Application Number:

13/090,294

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

F01D5/186 - {Film cooling
F01D5/188 - {with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall}

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

F05D2250/30 - Arrangement of components
F05D2260/221 - Improvement of heat transfer
F05D2260/941 - particularly aimed at mechanical or thermal stress reduction

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DOE Contract Number:  

FC26-05NT42644

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Apr 20

Country of Publication:

United States

Language:

English

Subject:

33 ADVANCED PROPULSION SYSTEMS; 42 ENGINEERING