GAS TURBINE COMPRESSOR CASING FLOWPATH RING AND ASSEMBLY METHOD OF STATOR CASING

摘要

PROBLEM TO BE SOLVED: To provide a gas turbine compressor casing flowpath ring. SOLUTION: This flowpath ring (26) is securable in a machined groove (24) of a gas turbine compressor stator casing (12). The ring (26) includes a connector section (28) engageable with and shaped corresponding to the machined groove (24). A flowpath section (30) is disposed radially inward relative to the connector section (28) and includes a clearance surface (32) disposed facing a turbine rotor blade (20). The flowpath section (30) defines a blade flowpath when secured in the turbine stator casing machined groove (24). The use of flowpath rings facilitates flowpath repair if rotor blade tip rubs occur. Additionally, the rings enable better matching of transient thermal responses between the compressor rotor and compressor casings. COPYRIGHT: (C)2008,JPO&INPIT