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 joint assembly for a steam turbine includes a threaded stud extending through mating openings in a first flange of the first half shell and in a second flange of the second half shell; a first nut threaded onto a first end of the threaded stud adjacent the first flange; a screw coupling the first nut to the first flange; and a dowel extending between and into the first flange and the first nut so as to bear a substantial portion of a torque load applied to the first nut compared to the screw.

Abstract: Disclosed herein is a loose anti-rotation lock sleeve design for use in a flange and pipe assembly. The design includes a lock sleeve positioned between a pipe and a flange to prevent rotation of the pipe relative to the flange. The lock sleeve includes at least two openings in a first end of the lock sleeve configured to receive at least two pipe pins extending radially outward from the pipe. The lock sleeve further includes at least four openings in a second end of the lock sleeve configured to receive at least four flange pins extending radially inward from the flange.

Abstract: A loose anti-rotation lock sleeve design for use in a flange and pipe assembly. The design includes a lock sleeve positioned between a pipe and a flange to prevent rotation of the pipe relative to the flange. The lock sleeve includes at least two openings in a first end of the lock sleeve configured to receive at least two pipe pins extending radially outward from the pipe. The lock sleeve further includes at least four openings in a second end of the lock sleeve configured to receive at least four flange pins extending radially inward from the flange.

Abstract: A joint assembly for a steam turbine includes a threaded stud extending through mating openings in a first flange of the first half shell and in a second flange of the second half shell; a first nut threaded onto a first end of the threaded stud adjacent the first flange; a screw coupling the first nut to the first flange; and a dowel extending between and into the first flange and the first nut so as to bear a substantial portion of a torque load applied to the first nut compared to the screw.

Abstract: Disclosed herein is a loose anti-rotation lock sleeve design for use in a flange and pipe assembly. The design includes a lock sleeve positioned between a pipe and a flange to prevent rotation of the pipe relative to the flange. The lock sleeve includes at least two openings in a first end of the lock sleeve configured to receive at least two pipe pins extending radially outward from the pipe. The lock sleeve further includes at least four openings in a second end of the lock sleeve configured to receive at least four flange pins extending radially inward from the flange.

Abstract: A turbine shell assembly includes radially inner and outer shell components; axial alignment fits on the inner and outer shell components, each alignment fit comprising a male fit component on one of the inner and outer shell components and a female fit component on the other of the inner and outer shell components, the female fit component comprising a pair of flanges forming a U-shaped channel with opposed faces, and the male fit component comprising a projection received within the U-shaped channel; and a pair of axial alignment keys, each key having a mounting flange for securement along an outer edge of a respective one of the pair of flanges and an alignment flange engaged along a respective one of the opposed faces.