Method for removing rotatable blades without removing the casting of a turbine
AssigneeWestinghouse Electric Corp.
InventorsRonald E. Warner, Francis J. Healey, Abel D. Grijalba
Life of this patent
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Abstract
A rotor for an axial flow, elastic fluid turbine apparatus. The rotor has a rotating shaft having a plurality of circumferentially spaced rotating blades thereon. Each blade has a platform portion having a convex arcuate surface and a concave arcuate surface. The convex arcuate surface has a radius greater than the radius of the concave arcuate surface so that individual rotating blades can be removed without removing the casing.
Claims10
A method for replacing a particular rotatable blade disposed on a rotor in an axial flow turbine apparatus, said method comprising the steps of
- a. displacing a rotatable blade next proceeding in the direction of rotation of said rotor from said particular rotatable blade a predetermined distance in a direction opposite said axial flow,
- b. removing said particular rotatable blade in said direction of said axial flow,
- c. moving a replacement rotatable blade for said removed particular rotatable blade into said turbine apparatus in said direction opposite said axial flow, and,
- d. returning said displaced rotatable blade to its original position.
A method for replacing a particular rotatable blade disposed on a rotor in an axial flow turbine apparatus, said method comprising the steps of,
- a. displacing said particular rotatable blade and a rotatable blade disposed on each side thereof from their original circumferentially adjacent positions a predetermined distance within said turbine apparatus in a direction opposite to said axial flow,
- b. removing said particular rotatable blade from said turbine apparatus in said direction of said axial flow,
- c. moving a replacement rotatable blade for said removed particular rotatable blade into said turbine apparatus in said direction opposite to said axial flow, and,
- d. returning said rotatable blades to the original circumferentially adjacent positions.
Dependencies are inferred from the claim text.