Siemens Energy, Inc.

Siemens Energy Global Gmbh & Co. Kg

Daniel Joo

Ching-Pang Lee

Gm Salam Azad

Sin Chien Siw

Caleb Myers

Alan A Thrift

Johan K Westin

A turbine vane in a gas turbine engine includes an inner platform, an outer platform, and a vane airfoil positioned therebetween. The vane airfoil includes a first cooling passage extending between the outer platform and the inner platform, and a second cooling passage extending between the outer platform and the inner platform. The second cooling passage is arranged downstream of the first cooling passage with respect to a flow direction. The turbine vane includes a jumper tube disposed between the second cooling passage and the inner platform. The jumper tube includes an inlet, an outlet, and a tube wall enclosing a hollow interior. The inlet is positioned a distance within the second cooling passage. The outlet is positioned at least partially through an aperture of the inner platform.

Turbine vane in gas turbine engine

A cooling system () positioned within a turbine airfoil () and having film cooling channels () positioned within inner and outer endwalls () of the turbine airfoil (), with cooling fluids supplied to the cooling channels () other than from an aft cooling chamber () to prevent blockages from developing within the film cooling channels () from debris that typically collects with the aft cooling chamber () during steady state operation of the turbine engine is disclosed. The cooling system () may include one or more midchord cooling channels () extending from a midchord cooling chamber () and including an outlet () positioned closer to a downstream edge () of the inner endwall () than an upstream wall () forming the aft cooling chamber (). The midchord cooling channel, thus, may cool aspects of the inner endwall () radially outward of the aft cooling chamber () without receiving cooling fluid from aft cooling chamber (), thereby eliminating the possibility of blockages from debris in the aft cooling chamber ().

Cooled turbine vane platform comprising forward, midchord and aft cooling chambers in the platform

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Oviedo, FL, United States of America

Daniel Joo