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US 8,282,349 B2Granted
Steam turbine rotor and method of assembling the same
AssigneeGeneral Electric Company
InventorGregory Edward Cooper
Life of this patent
Estimating the term…
Abstract
A steam turbine rotor is provided. The rotor includes at least one bearing section coupled axially to a steampath section including at least one end, the at least one end further including a flange and a bore, the flange and the bore configured to be coupled to the at least bearing section.
Claims19
A steam turbine rotor comprising:
- at least one bearing section comprising a rotor portion and an interference portion extending outwardly from said rotor portion, said interference portion comprising a radially outer surface;
- and
- a steampath section comprising a flange extending outwardly from at least one end, said flange comprising a radially inner surface defining a bore, said bore sized to receive said interference portion therein such that said interference portion outer surface is positioned adjacent to said flange inner surface to enable said at least one bearing section to couple to said steampath section,
- wherein the flange further comprises an annular end surface comprising a first plurality of circumferentially-spaced openings sized to receive a fastener that couples said bearing section to said steampath section, and a second plurality of circumferentially-spaced openings sized to receive an alignment mechanism for aligning said bearing section and said steampath section, centers of said first plurality of openings and said second plurality of openings being a substantially same radial distance from a central rotational axis of the rotor.
1 more element
A turbine engine comprising:
- a turbine;
- and
- a rotor extending axially through said turbine, said rotor comprising:
- at least one bearing section comprising a rotor portion and an interference portion extending outwardly from said rotor portion, said interference portion comprising a radially outer surface;
- and
- a steampath section comprising a flange extending outwardly from at least one end, said flange comprising a radially inner surface defining a bore, said bore sized to receive said interference portion therein such that said interference portion outer surface is positioned adjacent to said flange inner surface to enable said at least one bearing section to couple to said steampath section,
- wherein the flange further comprises an annular end surface comprising a first plurality of circumferentially-spaced openings sized to receive a fastener that couples said bearing section to said steampath section, and a second plurality of circumferentially-spaced openings sized to receive an alignment mechanism for aligning said bearing section and said steampath section, centers of said first plurality of openings and said second plurality of openings being a substantially same radial distance from a central rotational axis of the rotor.
4 more elements
A method for assembling a turbine rotor, said method comprising:
- fabricating a steampath section including a flange extending outwardly from at least one end, wherein the flange includes a radially inner surface that defines a bore therein, and an annular end surface comprising a first plurality of circumferentially-spaced openings sized to receive a fastener that couples said bearing section to said steampath section, and a second plurality of circumferentially-spaced openings sized to receive an alignment mechanism for aligning said bearing section and said steampath section, centers of said first plurality of openings and said second plurality of openings being a substantially same radial distance from a central rotational axis of the rotor;
- fabricating at least one bearing section including a substantially cylindrical rotor portion, an interference portion extending outwardly from the rotor portion, and a rim portion extending radially outwardly from the rotor portion, the interference portion including a radially outer surface;
- and
- coupling the steampath section to the at least one bearing section such that the interference portion is inserted into the bore of the steampath section and such that the interference portion outer surface is adjacent to the flange inner surface.
1 more element
Dependencies are inferred from the claim text.