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AssigneeGeneral Electric Company
InventorsKevin Joseph Barb, Amir Mujezinovic, Nicholas Francis Martin, Douglas Carl Hofer
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A method of modifying a rotor blade, and a rotor blade are provided. The rotor blade is for a steam turbine and it is modified to facilitate altering a natural vibratory frequency of the rotor blade, the rotor blade includes a leading edge, a trailing edge, a first sidewall, and a second sidewall, wherein the first and second sidewalls are connected axially at the leading and trailing edges, and the sidewalls extending radially between a rotor blade root to a rotor blade tip. The method includes determining a vibratory resonance condition of the rotor blade and forming a blade extension between the rotor blade root and the rotor blade tip that alters the determined resonance condition.
A method of modifying a rotor blade for a steam turbine to facilitate altering a natural vibratory frequency of the rotor blade, the rotor blade including a leading edge, a trailing edge, a first sidewall, and a second sidewall, the first and second sidewalls connected axially at the leading and trailing edges, and extending radially between a rotor blade root and a rotor blade tip, said method comprising the steps of:
A rotor blade for a steam turbine including at least one stage, the stage formed from a row of rotor blades and a row of adjacent stationary nozzles, said rotor blade comprising:
A multi-stage steam turbine comprising:
Dependencies are inferred from the claim text.