Title: Adaptive cover for cooling pathway by additive manufacture

Abstract

A hot gas path component of an industrial machine includes an adaptive cover for a cooling pathway. The component and adaptive cover are made by additive manufacturing. The component includes an outer surface exposed to a working fluid having a high temperature; a thermal barrier coating over the outer surface; an internal cooling circuit; and a cooling pathway in communication with the internal cooling circuit and extending towards the outer surface. The adaptive cover is positioned in the cooling pathway at the outer surface. The adaptive cover includes a heat transfer enhancing surface at the outer surface causing the adaptive cover to absorb heat faster than the outer surface, e.g., when a spall in a thermal barrier coating thereover occurs.

Inventors:

Lacy, Benjamin Paul; Morgan, Victor John

Issue Date:

Tue Feb 23 00:00:00 EST 2021

Research Org.:

General Electric Co., Schenectady, NY (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1805533

Patent Number(s):

10927680

Application Number:

15/609,562

Assignee:

General Electric Company (Schenectady, NY)

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

F01D5/181 - {Blades having a closed internal cavity containing a cooling medium, e.g. sodium}
F01D5/185 - {Liquid cooling
F01D5/186 - {Film cooling
F01D5/187 - {Convection cooling}
F01D5/188 - {with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall}
F01D5/189 - {the insert having a tubular cross-section, e.g. airfoil shape}
F01D5/288 - {Protective coatings for blades}
F01D9/041 - {using blades
F01D9/065 - {Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids

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

F05D2230/30 - with deposition of material
F05D2230/90 - Coating
F05D2260/202 - by film cooling
F05D2260/22141 - using fins or ribs
F05D2270/46 - redundant, i.e. failsafe operation

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DOE Contract Number:  

FE0023965

Resource Type:

Patent

Resource Relation:

Patent File Date: 05/31/2017

Country of Publication:

United States

Language:

English