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 includes an annular EGV assembly containing a number of guide vanes 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 substantially matching the first and second radii respectively join the EGV assembly to an annular pre-diffuser having an annular opening bounded by radially inner and outer annular sealing surfaces at substantially the first and second radii. The seals seal the inner sealing surface of the EGV assembly to the inner sealing surface of the pre-diffuser and the second seal seals the outer sealing surface of the EGV assembly to the outer sealing surface of the pre-diffuser, such that the EGV assembly annular opening is in fluid communication with the annular opening of the pre-diffuser.

主权项

1. A pre-diffuser and exit guide vane (EGV) system for a gas turbine engine, the system comprising:
an annular EGV assembly containing a plurality of radially directed guide vanes and having an annular output flow opening bounded by a radially inner annular sealing surface at a first radius and a radially outer annular sealing surface at a second radius greater than the first radius; a first seal having a radius substantially the same as the first radius; a second seal having a radius substantially the same as the second radius; and an annular pre-diffuser having an annular input flow opening bounded by a radially inner annular sealing surface at substantially the first radius and a radially outer annular sealing surface at substantially the second radius, the pre-diffuser being interfaced to the EGV assembly such that the first seal seals the inner sealing surface of the EGV assembly to the inner sealing surface of the pre-diffuser across a first gap and the second seal seals the outer sealing surface of the EGV assembly to the outer sealing surface of the pre-diffuser across a second gap, whereby the output flow opening of the EGV assembly is in fluid communication with the input flow opening of the pre-diffuser.