Abstract: A centerline support bar for steam turbine component assembly, installation, and/or alignment is disclosed. In one embodiment, the support bar includes a body portion configured to be disposed across a centerline of a steam turbine, the body portion configured to transversely connect to a steam turbine component; and a first flange extending from the body portion and configured to contact a steam turbine casing, wherein the steam turbine support bar is configured to non-affixedly join the steam turbine casing to the steam turbine component.

Abstract: A support block for a steam turbine casing, a related assembly and apparatus. Various embodiments include a steam turbine casing support block having: a body portion sized to substantially fill a pocket in a steam turbine casing, the body portion having a greater length than a depth or a width; a set of tabs extending from the body portion, each of the set of tabs sized to substantially fill a corresponding slot in the steam turbine casing, wherein the set of tabs are located at a radially outwardly facing wall of the body portion; and a pin hole on a bottom surface of the body portion for receiving a retaining member.

Abstract: A centerline support bar for steam turbine component assembly, installation, and/or alignment is disclosed. In one embodiment, the support bar includes a body portion configured to be disposed across a centerline of a steam turbine, the body portion configured to transversely connect to a steam turbine component; and a first flange extending from the body portion and configured to contact a steam turbine casing, wherein the steam turbine support bar is configured to non-affixedly join the steam turbine casing to the steam turbine component.

Abstract: A centerline support bar for steam turbine component assembly, installation, and/or alignment is disclosed. In one embodiment, the support bar includes a body portion configured to be disposed across a centerline of a steam turbine, the body portion configured to transversely connect to a steam turbine component; and a first flange extending from the body portion and configured to contact a steam turbine casing, wherein the steam turbine support bar is configured to non-affixedly join the steam turbine casing to the steam turbine component.

Abstract: A support block for a steam turbine casing, a related assembly and apparatus. Various embodiments include a steam turbine casing support block having: a body portion sized to substantially fill a pocket in a steam turbine casing, the body portion having a greater length than a depth or a width; a set of tabs extending from the body portion, each of the set of tabs sized to substantially fill a corresponding slot in the steam turbine casing, wherein the set of tabs are located at a radially outwardly facing wall of the body portion; and a pin hole on a bottom surface of the body portion for receiving a retaining member.

Abstract: Various embodiments include methods and apparatuses of forming turbomachine casing intermediate structures. In some embodiments apparatuses include a steam turbomachine casing intermediate structure including an inner shell having an external surface and inner shell cavity, and defining an opening for allowing fluid entry to the cavity and an outer shell having an internal surface, these surfaces defining at least one closed, axial-extending chamber, the inner shell and outer shells each having access regions adjacent the closed chamber, each of the access regions including a plurality of locations, selectable to be machined to create an exhaust slot or an exhaust opening in the inner casing or the outer casing, respectively, and wherein a structural integrity of the casing is uniform regardless of which of the axial locations are selected to be machined, where the exhaust opening is fluidly connected with the at least one closed chamber through the outer shell.

Abstract: A centerline support bar for steam turbine component assembly, installation, and/or alignment is disclosed. In one embodiment, the support bar includes a body portion configured to be disposed across a centerline of a steam turbine, the body portion configured to transversely connect to a steam turbine component; and a first flange extending from the body portion and configured to contact a steam turbine casing, wherein the steam turbine support bar is configured to non-affixedly join the steam turbine casing to the steam turbine component.

Abstract: A stationary component includes an outer ring including a first plenum, a first passageway, and a second plenum defined therein. The first passageway extends between the first plenum and the second plenum. An airfoil is disposed radially inward of the outer ring. The airfoil includes a second passageway defined therein. The second passageway is coupled in flow communication with the second plenum.

Abstract: A steam turbine is provided. The steam turbine includes a rotor shaft including a plurality of buckets coupled thereto. The steam turbine further includes a stationary component coupled to a steam turbine casing, wherein the stationary component is coupled upstream from the buckets such that a wheelspace is defined between the buckets and the stationary component. The stationary component includes a first ring coupled to the steam turbine, a second ring coupled to the steam turbine radially inward from the first ring, and at least one airfoil extending between the first ring and the second ring. The steam turbine includes a cooling fluid flowpath defined through at least the first ring, the airfoil, and the second ring. The cooling fluid flowpath is configured to channel a cooling fluid to the wheelspace.

Abstract: Systems for shielding a shaft from contaminants are disclosed. In one embodiment, a contaminant shield system for a shaft includes: a fluid seal disposed circumferentially about the shaft, the fluid seal substantially fluidly isolating an inner portion of the shaft from atmospheric air; an oil deflector ring disposed circumferentially about the inner portion of the shaft, the oil deflector ring having an inner surface facing a portion of the shaft exposed to a lubricating oil and an outer surface facing the fluid seal; and a fluid conduit interposed between the fluid seal and the outer surface of the oil deflector ring, the fluid conduit for receiving a fluid and releasing the fluid between the fluid seal and the outer surface of the oil deflector ring creating a positive pressure differential.

Abstract: A system may cool a wheel of a steam turbine, the wheel being associated with a rotor of the steam turbine. The system may include an inlet passage and an outlet passage. The inlet passage may be positioned to communicate steam from an exterior of the rotor, through an interior of the rotor, and to the wheel. The outlet passage may be positioned to communicate steam from the wheel, through the interior of the rotor, and to the exterior of the rotor.

Abstract: A method of fabricating a turbine rotor is provided. The method includes fabricating a plurality of substantially cylindrical disks. Fabricating each disk includes fabricating a substantially cylindrical body and extending a bore substantially concentrically through the body. The method also includes coupling at least two of the plurality of disks together to form a rotor having a bore extending axially therethrough.

Abstract: A method for cooling a rotating component within a steam turbine is provided. The method includes channeling a cooling fluid through an outer plenum defined in a stationary component of the steam turbine and channeling the cooling fluid from the outer plenum through a passageway defined in an airfoil of the stationary component. The cooling fluid is discharged from the airfoil passageway through an inner plenum of the stationary component to facilitate cooling an adjacent rotating component.

Abstract: A system may cool a wheel of a steam turbine, the wheel being associated with a rotor of the steam turbine. The system may include an inlet passage and an outlet passage. The inlet passage may be positioned to communicate steam from an exterior of the rotor, through an interior of the rotor, and to the wheel. The outlet passage may be positioned to communicate steam from the wheel, through the interior of the rotor, and to the exterior of the rotor.

Abstract: A method of fabricating a turbine rotor is provided. The method includes fabricating a plurality of substantially cylindrical disks. Fabricating each disk includes fabricating a substantially cylindrical body and extending a bore substantially concentrically through the body. The method also includes coupling at least two of the plurality of disks together to form a rotor having a bore extending axially therethrough.

Abstract: The steampath for a steam turbine includes stacked stator rings each mounting inwardly directed nozzles and stacked rotor wheels each mounting outwardly directed buckets mounting blades. By alternately stacking the stator rings and rotor wheels, the nozzles and buckets of the various stages are interdigitated to form a steampath. Each bucket includes a blade and a root received in a generally complementary shaped groove on a wheel.

Abstract: The coupling between discrete axially aligned first and second turbine shafts includes a flange on one end of one shaft and a rotor wheel on the other shaft. Holes in axial alignment with one another through the flange and rotor wheel receive fastening elements securing the rotor wheel and flange to one another, thereby securing the shaft sections to one another. The fastening elements engage segments on the side of the rotor wheel remote from the flange to facilitate clamping of the flange and rotor wheel to one another. The segments also include outer arcuate surfaces which form sealing surfaces with radially opposed labyrinth teeth of packing ring segments forming part of the turbine diaphragms.

Abstract: The coupling between discrete axially aligned first and second turbine shafts includes a flange on one end of one shaft and a rotor wheel on the other shaft. Holes in axial alignment with one another through the flange and rotor wheel receive fastening elements securing the rotor wheel and flange to one another, thereby securing the shaft sections to one another. The fastening elements engage segments on the side of the rotor wheel remote from the flange to facilitate clamping of the flange and rotor wheel to one another. The segments also include outer arcuate surfaces which form sealing surfaces with radially opposed labyrinth teeth of packing ring segments forming part of the turbine diaphragms.