Method and apparatus for removing one or more vanes from a gas turbine compressor stator
US4141124A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1977 |
| Grant date | Feb 27, 1979 |
| Priority date | — |
| Expiry date | Aug 29, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/395
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Disclosed is an improved method and apparatus for removing damaged or worn vanes which are brazed or otherwise metallurgically attached between the concentric inner and outer shroud members of a gas turbine compressor stator. The method involves punching one of the attached vane ends in the radial direction relative to the concentric shroud members with sufficient force to shear the metallurgical joints holding the vane in the shroud slots. During punching, the shroud members are rigidly supported against deformation in the vicinity of the attached vane ends and the vane itself is supported laterally to prevent buckling thereof. With the invention, a stator can be repaired with no diminution in structural strength as compared to a new part. A punch and die assembly for use in removing a damaged vane is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.