Valve and manifold for compressor bore heating

Patent · Tue Feb 24 04:00:00 EST 1987

OSTI ID:6739486

Weiner, H I

This patent describes a gas turbine engine having an engine case housing a compressor rotor having compressor blades extending in the bore of the engine case, means for selectively heating the bore to expand the compressor rotor so as to maintain a limited clearance of the tips of the compressor blades. The means includes a valve having a first and second position. The engine casing is enlarged to accommodate the valve and defines a manifold. Connecting means leads mid-stage compressor bleed air into the manifold and a higher stage compressor bleed air into the manifold. The valve interconnects the bore and the manifold for selectively injesting mid-stage compressor bleed air and a higher stage compressor bleed air into the bore. A control means positions the valve to the first position and alternately to the second position.

• Assignee: United Technologies Corp., Hartford, CT
• Patent Number(s): US 4645416
• OSTI ID: 6739486
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
AIR FLOW
COMPRESSORS
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
GAS COMPRESSORS
GAS FLOW
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
POSITIONING
ROTORS
TURBINE BLADES
VALVES