Siemens Aktiengesellschaft

Siemens Energy, Inc.

Eric Chen

Ching-Pang Lee

Kok-Mun Tham

Steven Koester

A turbine component including a shrouded airfoil with a flow conditioner configured to direct leakage flow and coolant to be aligned with main hot gas flow is provided. The flow conditioner is positioned on a shroud base radially adjacent to the tip of the airfoil and includes a ramped radially outer surface positioned further radially inward than a radially outer surface of the shroud base. The ramped radially outer surface extends from a first edge to a second edge in a direction generally from the suction side to the pressure side of the airfoil, such that the first edge is positioned further radially inward than the second edge. Multiple coolant ejection holes are positioned on the ramped radially outer surface. The coolant ejection holes are connected fluidically to an interior of the airfoil.

Shrouded turbine blade

A turbine blade includes an airfoil and a shroud coupled to a tip of the airfoil. The shroud includes a mid portion positioned directly above the tip of the airfoil. The mid portion includes a ramped radially outer surface extending from a first edge to a second edge in the direction from a pressure side toward a suction side of the airfoil, the second edge being positioned further radially inward than the first edge. In a first aspect, the shroud may include a curved pressure side portion positioned upstream of the pressure side of the airfoil, the pressure side portion being curved radially inward. In a second aspect, the shroud may include a curved suction side portion positioned downstream of the suction side of the airfoil, the suction side portion being curved radially outward.

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Cincinnati, OH, United States of America

Eric Chen