Steam turbine half shell joint assembly
AssigneeGeneral Electric Company
InventorsThomas William Swart, Jeyaruban Selliah Amirtharajah, Michael Thomas Hamlin
Life of this patent
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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.
Claims20
A joint assembly for a first and second half shell of a casing of a turbine, the joint assembly comprising:
- 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.
A steam turbine comprising:
- a plurality of blades coupled to a rotor for turning the rotor under influence of a steam flow;
- a casing including a first and second half shell coupled together to prevent leakage of the steam flow;
- and
- an joint assembly coupling the first and second half shells together, the joint assembly comprising:
- 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.
Dependencies are inferred from the claim text.