Turbine airfoil with laterally extending snubber having internal cooling system

Patent · 06 September 2016

OSTI ID:1321796

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

A turbine airfoil usable in a turbine engine and having at least one snubber with a snubber cooling system positioned therein and in communication with an airfoil cooling system is disclosed. The snubber may extend from the outer housing of the airfoil toward an adjacent turbine airfoil positioned within a row of airfoils. The snubber cooling system may include an inner cooling channel separated from an outer cooling channel by an inner wall. The inner wall may include a plurality of impingement cooling orifices that direct impingement fluid against an outer wall defining the outer cooling channel. In one embodiment, the cooling fluids may be exhausted from the snubber, and in another embodiment, the cooling fluids may be returned to the airfoil cooling system. Flow guides may be positioned in the outer cooling channel, which may reduce cross-flow by the impingement orifices, thereby increasing effectiveness.

• Research Organization: Siemens Energy, Inc. Orlando, FL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-05NT42644
• Assignee: Siemens Energy, Inc. (Orlando, FL)
• Patent Number(s): 9,435,212
• Application Number: 14/074,930
• OSTI ID: 1321796
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
42 ENGINEERING