Abstract:
A turbine shroud segment (35) including: a target exterior surface (71) and target interior region (72); and a cooling configuration having first (60) and second (61) channel types. The first channel type includes: an inlet (62) and outlet (63); a target section extending through the target interior region (72); lateral ports (85) spaced lengthwise between first and second ends of the target section; and a path within the target interior region offset from the target exterior surface by a minimum offset (76). The second channel type (61) includes: dead-ends (93, 94) disposed at first and second ends; lateral ports (97) connecting to lateral ports (86) of the first channel type; and a path through the target interior region that is variable between valleys (95) and peaks (96). The second channel type (61) resides closer to the target exterior surface (71) at the valleys than at the peaks. At each of the valleys, the second channel type resides within the minimum offset (76).
Abstract:
A turbine having a stationary shroud ring (34) formed about rotor blades (33). The stationary shroud ring may include an inner shroud segment (35). The inner shroud segment may include a cooling configuration that includes a crossflow channel (60). The crossflow channel (60) may extend lengthwise between an upstream end (61) and a downstream end (62), and, therebetween, include a junction point (65) that divides the crossflow channel lengthwise into upstream and downstream sections, with the upstream section extending between the upstream end (61) and the junction point (65), and the downstream section extending between the junction point and the downstream end (62). The crossflow channel (60) may have a cross-sectional flow area that varies lengthwise such that a cross-sectional flow area of the upstream section decreases between the upstream end (61) and the junction point (65), and a cross-sectional flow area of the downstream section increases between the junction point and the downstream end (62).
Abstract:
A turbine of a gas turbine engine that includes a stationary shroud ring having inner shroud segments (35) circumferentially stacked about a hot gas path (38). The inner shroud segments may include a first inner shroud segment (35a) that includes: a cooling configuration having cooling channels (60) configured to receive and direct a coolant through an interior of the first inner shroud segment (35a), where each of the cooling channels extends lengthwise between a first end and a second end that includes an outlet (63) formed through an exterior surface of the first inner shroud segment; a circumferential edge; a slot (57) formed in the circumferential edge (48); and a sealing member (58) positioned within the slot. The outlet (63) of at least one of the cooling channels may be positioned within the slot.
Abstract:
A system 100 for controlling a gas turbine based power plant 10 includes a plurality of sensors 34 configured to transmit signals 72 indicative of one or more operating parameters of the gas turbine 12, and a control system 20 in electronic communication with each sensor 34. The control system 20 is configured to compute cumulative wear for one or more hardware components of the gas turbine 12 based at least in part on the sensors signals 72. Instructions are inputted into the control system 20 which indicates a desired operational mode for the gas turbine 12. The control system 20 may then compute a hardware consumption rate for the hardware component based at least in part on the cumulative wear. The hardware consumption rate may then be displayed to an operator via a display device 74. The operator may use the hardware consumption rate to determine potential economic impact of operating the gas turbine at the desired operational mode.
Abstract:
An embodiment of an independent cooling circuit for selectively delivering cooling fluid to a component of a gas turbine system includes: at least one coolant feed channel fluidly coupled to a supply of cooling fluid; and an interconnected circuit of cooling channels, including: an interconnected circuit of cooling channels embedded within an exterior wall of the component; an impingement plate; and a plurality of feed tubes connecting the impingement plate to the exterior wall of the component and fluidly coupling a supply of cooling fluid to the interconnected circuit of cooling channels; wherein the cooling fluid flows through the plurality of feed tubes into the interconnected circuit of cooling channels only in response to a formation of a breach in the exterior wall of the component that exposes at least one of the cooling channels.
Abstract:
A turbine that includes an inner shroud segment (35) having a cooling configuration in which interior channels (60) are configured to receive and direct a coolant. The cooling configuration may include a pair of counterflowing crossflow channels (60) in which a first crossflow channel extends side-by-side with a neighboring second crossflow channel; and a feed (81) and outlet (82) channel configuration comprising neighboring feed and outlet channels. The feed channel may connect at a first connection to an upstream end (61) of the first crossflow channel and the outlet channel may connect at a second connection to a downstream end (62) of the second crossflow channel. The feed channel may extend in an inner radial direction from an inlet (91) to the first connection. The outlet channel may extend in an outer radial direction from the second connection to an outlet (92). The feed channel may include a section that undercuts the outlet channel.