Tri-passage diffuser for a gas turbine

Details Tri-passage diffuser for a gas turbine Tri-passage diffuser for a gas turbine

1996-02-09

1998-04-14

Casaregola, Louis J.

Power plants

Reaction motor

Solid and fluid propellant

415207, 4152112, F02C 700

Patent

active

057379157

ABSTRACT:
In a gas turbine having a transition region between a combustor and turbine stage including a transition piece duct extending between a combustor liner and the turbine stage; an impingement sleeve surrounding the transition piece, the impingement sleeve having a plurality of apertures therein; and a compressor diffuser directing compressor discharge air into the transition region, an improvement wherein the diffuser includes a pair of outer walls flaring outwardly in a direction of compressor discharge air flow; and a pair of baffles within a flow area defined by the pair of outer diffuser walls which divide the flow area into three discrete flow passages. One passage has a substantially radial flow component; a second passage has both radial and axial flow components; and a third passage has a substantially axial flow component.

REFERENCES:
patent: 2991927 (1961-07-01), Quick
patent: 3552877 (1971-01-01), Christ et al.
patent: 3877221 (1975-04-01), Lefebvre et al.
patent: 4291531 (1981-09-01), Campbell
patent: 5077967 (1992-01-01), Widener et al.
patent: 5209066 (1993-05-01), Barbier et al.
patent: 5335501 (1994-08-01), Taylor

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