HIGH COMPRESSOR EXIT GUIDE VANE ASSEMBLY TO PRE-DIFFUSER JUNCTION

摘要

A pre-diffuser and exit guide vane (EGV) system for a gas turbine engine (10) includes an annular EGV assembly (31) containing a number of guide vanes (33) and having an annular opening bounded by a radially inner annular sealing surface at a first radius and a radially outer annular sealing surface at a second radius. First and second seals (35) substantially matching the first and second radii respectively join the EGV assembly (31) to an annular pre-diffuser (30) having an annular opening bounded by radially inner and outer annular sealing surfaces at substantially the first and second radii. The seals (35) seal the inner sealing surface of the EGV assembly (31) to the inner sealing surface of the pre-diffuser (30) and the second seal (35) seals the outer sealing surface of the EGV assembly (31) to the outer sealing surface of the pre-diffuser (30), such that the EGV assembly annular opening is in fluid communication with the annular opening of the pre-diffuser (30).