Turbine nozzle segment and method of repairing same
OwnerJames W. Caddell JR., James M. Caldwellinventors
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Abstract
A method for repairing a turbine nozzle segment having at least two vanes disposed between outer and inner bands includes the steps of separating the nozzle segment into a first singlet containing a repairable vane and a second singlet containing a non-repairable vane, and joining the first singlet to a newly manufactured singlet having a configuration that is similar to the second singlet.
Claims21
A method of repairing a turbine nozzle segment having at least two vanes disposed between outer and inner bands, said method comprising the steps of:
- separating said nozzle segment into a first singlet containing one of said vanes and a second singlet containing another one of said vanes;
- and
- joining said first singlet to a newly manufactured singlet having a configuration that is similar to said second singlet.
A method of repairing a turbine nozzle segment having a repairable vane and a non-repairable vane disposed between a first outer band and a first inner band, said method comprising the steps of:
- providing a newly manufactured singlet including a vane disposed between a second outer band having a first joining surface and a second inner band having a second joining surface;
- cutting said first outer band and said first inner band of said nozzle segment in two between said two vanes so as to separate said nozzle segment into a first singlet containing said repairable vane and a second singlet containing said non-repairable vane, wherein said first singlet includes a third joining surface on said first outer band and a fourth joining surface on said first inner band;
- repairing damage in said first singlet;
- and
- joining said first singlet to said newly manufactured singlet by bonding said first and third joining surfaces together and said second and fourth joining surfaces together.
A turbine nozzle segment comprising:
- an outer band;
- an inner band;
- and
- first and second vanes disposed between said outer and inner bands, wherein said first vane and contiguous portions of said outer and inner bands define a first section of said nozzle segment and said second vane and respectively contiguous portions of said outer and inner bands define a second section of said nozzle segment, said first section being previously used and said second section being newly manufactured.
Dependencies are inferred from the claim text.