Solar Turbines Inc.

Marius Dumitrascu

Yong Weon Kim

Nnawuihe Asonye Okpara

Jeffrey Eugene Tarczy

Hyun Dong Kim

Yungmo Kang

George L Prater

James Maleski

Aaron J Dick

Estevan Daniel Negrete

Michael Eugene Greenspan

Victor Antonio Chagala Galicia

Jeffrey B Stewart

Donald Joseph Bognatz

Megan K Waller

Antonio Fajardo Celis

Tip shrouds or other shrouds with multi-slope geometries are generally implemented using segments, since performing the necessary cut for an alternative split-ring design is difficult given conventional cutting processes. However, a segmented design generally results in more leakage, relative to a split-ring design. Accordingly, a split-ring multi-slope design is disclosed that can be more easily manufactured. In particular, a continuous ring may be cut along a linear path to produce a split ring, and then the ends of the split ring may be machined to form complementary shiplap portions. The split ring may then be compressed for installation by overlapping the shiplap portions, to form a seal against leakage through the shroud.

Machine ring multi-slope tipshoe/tip shroud/outer air shroud

During operation of a gas turbine engine, the turbine blades are subjected to extremely high temperatures. While internal cooling passages may be provided within the turbine blades to cool the airfoils, the platforms of the turbine blades also experience high temperatures. In an embodiment, cooling holes are provided in each platform to cool distressed locations in the platform and improve the durability of each turbine blade.

Turbine blade platform cooling holes

A turbine blade is disclosed. The turbine blade may have an airfoil extending from a first surface of a turbine platform. The turbine blade may further have a first side pocket of the turbine platform that is configured to substantially entirely house a first moveable seal between a forward wall of the first side pocket and an aft wall of the first side pocket. The first side pocket may have a convex surface, extending between the forward wall and the aft wall, and a concave surface. The turbine blade may also have a second side pocket of the turbine platform configured to receive a portion of a second moveable seal.

Turbine blade including a seal pocket

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San Diego, CA, United States of America

Marius Dumitrascu