초록 ▼

A separator-diffuser for a gas turbine engine is disclosed wherein the diffuser includes axial walls which function as a guide vane stage for the oxidizer compressor. By incorporating the last, or downstream, guide vane stage into the diffuser structure, the overall axial length and bulk of the gas

A separator-diffuser for a gas turbine engine is disclosed wherein the diffuser includes axial walls which function as a guide vane stage for the oxidizer compressor. By incorporating the last, or downstream, guide vane stage into the diffuser structure, the overall axial length and bulk of the gas turbine engine may be significantly reduced. The separator-diffuser has a wall defining a generally annular oxidizer flow passage extending around the central axis of the gas turbine engine, the passage having an oxidizer inlet located downstream of the last rotor stage of the oxidizer compressor so as to enable the oxidizer to pass from the oxidizer compressor into the oxidizer flow passage. A generally annular separator member is located in the oxidizer flow passage downstream of the oxidizer inlet so as to divide the oxidizer flow passage into at least two separate oxidizer flow paths, each flow path having a separate oxidizer outlet. The oxidizer outlets are positioned so as to direct the oxidizer towards one of the annular array of fuel injection heads. A plurality of circumferentially spaced apart, axially extending primary arms connect the separator member to the diffuser walls so as to support the separator within the oxidizer passageway and to serve as a guide vane stage for the oxidizer emanating from the oxidizer compressor.

대표청구항 ▼

An integral guide vane and separator-diffuser for a gas turbine engine having a central axis, at least two radially spaced annular rows of fuel injection heads disposed around the central axis and an oxidizer compressor located upstream of the at least two annular rows of fuel injection heads, the c

An integral guide vane and separator-diffuser for a gas turbine engine having a central axis, at least two radially spaced annular rows of fuel injection heads disposed around the central axis and an oxidizer compressor located upstream of the at least two annular rows of fuel injection heads, the compressor having at least one rotor, the separator-diffuser comprising: a) wall means defining a generally annular oxidizer flow diffuser passage around the central axis having an oxidizer inlet located downstream of the at least one rotor so as to enable oxidizer to pass from the at least one rotor into the oxidizer flow diffuser passage; b) at least one generally annular separator member located in the oxidizer flow diffuser passage downstream of the oxidizer inlet so as to divide the oxidizer flow diffuser passage into at least two separate oxidizer flow paths each having a separate oxidizer outlet to direct oxidizer toward the at least two rows of fuel injection heads, the separator member having an upstream leading edge portion; c) a plurality of circumferentially spaced apart, generally axially extending primary guide vane arms connecting the separator member to the wall means, the primary guide vane arms having integral leading edge portions extending upstream beyond the upstream leading edge portion of the at least one separator member so as to form the sole stationary guide vanes adjacent to at least one said rotor so as to guide the oxidizer flow from the compressor, each primary guide vane arm having an axial length measured along the central axis greater than an axial length of the at least one annular separator member; d) a first trailing edge defined by the separator member; and, e) second trailing edges defined by the primary guide vane arms and located such that the second trailing edges are adjacent to the first trailing edge.