초록 ▼

To control disc temperature, provide blade tip clearance control, and purge the rotor bore of a high pressure compressor in a gas turbine engine, an axially elongated manifold is disposed coaxially in the rotor bore to distribute cooling air bleed from the compressor inlet airstream to selected cavi

To control disc temperature, provide blade tip clearance control, and purge the rotor bore of a high pressure compressor in a gas turbine engine, an axially elongated manifold is disposed coaxially in the rotor bore to distribute cooling air bleed from the compressor inlet airstream to selected cavities between successive rotor discs in amounts tailored to the particular cooling needs of the neighboring discs.

대표청구항 ▼

In a gas turbine engine rotor having a bore into which stages of discs radially project to define a succession of inter-disc cavities, a manifold comprising, in combination: A. an elongated inner tube mounted coaxially within the rotor bore; B. an elongated outer tube mounted in coaxially spaced rel

In a gas turbine engine rotor having a bore into which stages of discs radially project to define a succession of inter-disc cavities, a manifold comprising, in combination: A. an elongated inner tube mounted coaxially within the rotor bore; B. an elongated outer tube mounted in coaxially spaced relation with said inner tube to define an axially elongated, annular manifold chamber into which bleed air is introduced, wherein said manifold chamber is positioned radially inward of said stages of discs; C. plural orifices provided in said outer tube at predetermined axially spaced locations, wherein each of said plural orifices are positioned axially between a pair of adjacent ones of said stages of discs such that said predetermined axially spaced locations are respectively radially aligned with different ones of said inter-disc cavities, wherein said plural orifices inject bleed air from said manifold chamber into selected inter-disc cavities to mix with air therein and to control the temperature of neighboring discs, wherein said predetermined axially spaced locations of said plural orifices are effective in producing forced mixing of the bleed air and the air located within the selected inter-disc cavities.