초록 ▼

Cooling air from turbine nozzle vanes of a hot gas turbine engine is collected from the vanes by an air connector. A conduit connects to the connector and terminates adjacent a turbine wheel so that air flows through the vanes and through the conduit to be emitted from the end thereof in a jet strea

Cooling air from turbine nozzle vanes of a hot gas turbine engine is collected from the vanes by an air connector. A conduit connects to the connector and terminates adjacent a turbine wheel so that air flows through the vanes and through the conduit to be emitted from the end thereof in a jet stream directed against the turbine wheel. A vaned swirl nozzle is inserted in the conduit and adjacent a turbine wheel to impart a turning impetus to the air flow stream being emitted from the nipple. The emitted air stream is then directed tangentially against or adjacent the turbine wheel in the direction of rotation thereof.

대표청구항 ▼

An improved gas turbine engine of the type comprising an outer casing, a plurality of axially spaced apart turbine wheels rotatably mounted within the casing and having radially outwardly extending blades mounted thereon; a stationary annular member including air foil vanes positioned between each o

An improved gas turbine engine of the type comprising an outer casing, a plurality of axially spaced apart turbine wheels rotatably mounted within the casing and having radially outwardly extending blades mounted thereon; a stationary annular member including air foil vanes positioned between each of the turbine wheels; said bladed turbine wheels and said stationary annular members defining a hot gas path; an annular plenum defined between the hot gas path and an outer wall of the stationary member and a diaphragm depending from an inner wall of the stationary members; air passageways through at least some of the air foil vanes for conducting cooling air from the annular plenum to the diaphragm; and, wherein the improvement comprises: a plurality of air connectors depending from the inner wall of the annular member each air connector in fluid communication with at least one air foil vane; at least one aperture formed in the diaphragm facing an upstream preceding turbine wheel; an enlarged counterbore formed in the diaphragm eccentric to each aperture; a swirl nozzle inserted into the enlarged counterbore said swirler including an offset swirler counterbore; and, a nipple interconnecting an air connector with a swirler counterbore through an aperture formed in a diaphragm whereby cooling air is delivered from the annular plenum through the air foil vanes into the air connectors through the nipples into the swirler nozzles against an upstream preceding wheel.