General Electric Company

Other

Christopher Lee Golden

David Wayne Weber

Christopher Donald Porter

Joseph LaManna

James A Zadoorian

Michelle Jessica Iduate

Bryan David Lewis

Lee Larned Brozyna

Dustin Michael Earnhardt

Various embodiments of the invention include turbine nozzles and systems employing such nozzles. Various particular embodiments include a turbine nozzle having: an airfoil having: a suction side; a pressure side opposing the suction side; a leading edge spanning between the pressure side and the suction side; and a trailing edge opposing the leading edge and spanning between the pressure side and the suction side; and at least one endwall connected with the airfoil along the suction side, pressure side, trailing edge and the leading edge, the at least one endwall including a non-axisymmetric contour proximate a junction between the endwall and the leading edge of the airfoil.

Turbine nozzle having non-axisymmetric endwall contour (EWC)

Embodiments of the present disclosure provide a cooling structure for a stationary blade, which can include: an endwall coupled to a radial end of an airfoil, relative to a rotor axis of a turbomachine; and a substantially crescent-shaped chamber positioned within the endwall and radially displaced from a trailing edge of the airfoil, the substantially crescent-shaped chamber receiving a cooling fluid from a cooling circuit, wherein the substantially crescent-shaped chamber extends from a fore section positioned proximal to one of a pressure side surface and a suction side surface of the airfoil to an aft section positioned proximal to the trailing edge of the airfoil and the other of the pressure side surface and the suction side surface of the airfoil, wherein the aft section of the substantially crescent-shaped chamber is in fluid communication with the fore section of the substantially crescent-shaped chamber.

Cooling structure for stationary blade

Embodiments of the present disclosure provide a cooling structure for a stationary blade. The cooling structure can include: an airfoil having a cooling circuit therein; an endwall coupled to a radial end of the airfoil; a chamber positioned within the endwall for receiving a cooling fluid from the cooling circuit, wherein the cooling fluid absorbs heat from the endwall, and a temperature of the cooling fluid in an upstream region is lower than a temperature of the cooling fluid in a downstream region; a first passage within the endwall fluidly connecting the upstream region of the chamber to a wheel space positioned between the endwall and the turbine wheel; and a second passage within the endwall fluidly connecting the downstream region of the chamber to the wheel space.

According to one aspect of the invention, a turbine assembly includes a first component, a second component circumferentially adjacent to the first component, wherein the first and second components each have a surface proximate a hot gas path and a first side surface of the first component to abut a second side surface of the second component. The assembly also includes a first slot formed longitudinally in the first side surface, a second slot formed longitudinally in the second side surface, wherein the first and second slots are configured to receive a sealing member, and a first groove formed in a hot side surface of the first slot, the first groove extending axially from a leading edge to a trailing edge of the first component.

Turbine assembly and method for controlling a temperature of an assembly

According to one aspect, a turbine assembly includes a second component circumferentially adjacent to a first component, wherein the first and second components each have a surface proximate a hot gas path and a first side surface of the first component to be joined to a second side surface of the second component. The assembly also includes a first slot formed longitudinally in the first component which extends from a first slot inner wall to the first side surface and a second slot formed longitudinally in the second component which extends from a second slot inner wall to the second side surface. The assembly also includes a first groove formed in a hot side surface of the first slot, the first groove extending from the first slot inner wall to the first side surface, wherein the first groove comprises a tapered cross-sectional geometry.

Gas turbine stator assembly

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Greer, SC, United States of America

Christopher Lee Golden