Method and apparatus for repairing turbine rotor
AssigneeMechanical Dynamics & Analysis LLC
InventorsJames Coffey, Andrew Ruehs
Life of this patent
Estimating the term…
Abstract
A method for repairing a rotor of a turbine includes providing a rotor having a groove portion defined by a circumferential portion of the rotor. The circumferential portion of the rotor is removed to create an opening to provide access to the groove such that the opening, immediately adjacent the groove, is narrower than the groove. A guide block may be extended into a receiving slot separating a first protruding surface from a second protruding surface of the rotor such that a weld area slot of the guide block extends over at least a portion of the opening. The opening may be welded adjacent the guide block to close at least a portion of the opening.
Claims56
A method for use in repairing a rotor of a turbine, the method comprising:
- providing a rotor having a groove defined by a circumferential portion of the rotor;
- and
- removing a part of the circumferential portion of the rotor to create an opening to provide access to the groove such that the opening, immediately adjacent the groove, is narrower than the groove.
A method for use in closing an opening in an object having a plurality of protruding surfaces forming an intermittent geometry, the method comprising:
- extending a guide block into a receiving slot separating a first protruding surface from a second protruding surface of the object such that a weld area slot of the guide block extends over at least a portion of the opening;
- and
- welding the opening adjacent the guide block to close at least a portion of the opening.
An apparatus for use in closing an opening in an object having an intermittent geometry, the apparatus comprising:
- a member configured to be received in a receiving slot of the object, the slot having an edge defining a side of the opening, said member comprising:
- a central portion and at least one outer portion;
- an outer surface;
- a core connecting said central portion and said at least one outer portion;
- and
- at least one breakaway cut comprising a space separating said central portion and said at least one outer portion, said space extending from said core to said outer surface to allow said central portion to be separated from said at least one outer portion in response to said core being removed.
An apparatus for use in repairing a rotor of a turbine, the apparatus comprising:
- a lathe tool configured to extend through an opening in the rotor and into a groove, the opening being narrower than the groove and immediately adjacent thereto;
- said lathe tool comprising a shaping portion, said shaping portion configured to contact a wall of the groove to shape the groove in response to the rotor being rotated in contact with the contacting portion.
A rotor for use in a turbine, the rotor comprising:
- a circumferential portion;
- a groove defined by said circumferential portion;
- and
- said circumferential portion comprising a closed opening, said opening being at least partially closed by a cover, said cover, immediately adjacent said groove, being narrower than said groove.
Dependencies are inferred from the claim text.