Title: Turbine airfoil cooling system with cooling systems using high and low pressure cooling fluids

Abstract

A turbine airfoil cooling system including a low pressure cooling system and a high pressure cooling system for a turbine airfoil of a gas turbine engine is disclosed. In at least one embodiment, the low pressure cooling system may be an ambient air cooling system, and the high pressure cooling system may be a compressor bleed air cooling system. In at least one embodiment, the compressor bleed air cooling system in communication with a high pressure subsystem that may be a snubber cooling system positioned within a snubber. A delivery system including a movable air supply tube may be used to separate the low and high pressure cooling subsystems. The delivery system may enable high pressure cooling air to be passed to the snubber cooling system separate from low pressure cooling fluid supplied by the low pressure cooling system to other portions of the turbine airfoil cooling system.

Inventors:

Marsh, Jan H.; Messmann, Stephen John; Scribner, Carmen Andrew

Issue Date:

2017-10-25

Research Org.:

SIEMENS ENERGY, INC. Orlando, FL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1404936

Patent Number(s):

9797259

Application Number:

14/200,168

Assignee:

SIEMENS ENERGY, INC.

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

F01D25/14 - Casings modified therefor
F01D5/081 - {Cooling fluid being directed on the side of the rotor disc or at the roots of the blades
F01D5/087 - {in the radial passages of the rotor disc}
F01D5/187 - {Convection cooling}
F01D5/22 - Blade-to-blade connections, {e.g. for damping vibrations}

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

F05D2240/81 - Cooled platforms

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DOE Contract Number:  

FC26-05NT42644

Resource Type:

Patent

Resource Relation:

Patent File Date: 2014 Mar 07

Country of Publication:

United States

Language:

English

Subject:

42 ENGINEERING