초록 ▼

A high pressure turbine in a gas turbine engine contains an arrangement of channels, holes and windows through components controlling the operating clearance between tips of turbine blades and casing shroud segments wherein the arrangement defines a serial supply path for a single cooling airflow th

A high pressure turbine in a gas turbine engine contains an arrangement of channels, holes and windows through components controlling the operating clearance between tips of turbine blades and casing shroud segments wherein the arrangement defines a serial supply path for a single cooling airflow through the clearance control components. The arrangement also includes a plurality of holes defined through a cover located between shroud holders and segments.

대표청구항 ▼

In a gas turbine engine including a rotor rotatable about a longitudinal axis and having a row of blades with outer tips, a stationary casing disposed in concentric relation about said rotor, and a plurality of blade tip clearance control components, said clearance control components including a plu

In a gas turbine engine including a rotor rotatable about a longitudinal axis and having a row of blades with outer tips, a stationary casing disposed in concentric relation about said rotor, and a plurality of blade tip clearance control components, said clearance control components including a plurality of clearance control rings mounted on said casing and extending circumferentially about said axis, a plurality of shroud segments extending circumferentially about said outer tips of said blades, and a plurality of shroud holders extending circumferentially about said axis and supporting said shroud segments in radially outward spaced relation from said outer tips of said blades, an arrangement for cooling said clearance control components, comprising: (a) means for defining a serial supply path for a single cooling airflow through said clearance control components; (b) wherein said serial supply path-defining means includes at least one channel defined through each of said clearance control rings, wherein said clearance control rings are radially spaced apart from said shroud segments by said shroud holders which are mounted on said clearance control rings.