F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
170/60
F01D 25/00 (2006.01) F01D 1/34 (2006.01) F01D 11/18 (2006.01)
Patent
CA 1139231
13DV-7495 CLEARANCE CONTROL ABSTRACT OF THE DISCLOSURE A system is provided inside a turbomachine for controlling operational clearance between a turbine rotor and a surrounding turbine shroud. The system comprises a plurality of control rings, integrated into the turbine casing, that are thermally expanded and contracted to control radial positioning of the turbine shroud. Compressor air is directed through internal passages in the rings to cause the expansion and contraction. The system utilizes the pressure and temperature of compressor air, in combination with size, location, and structure of the control rings to match thermal growth of the control rings and turbine shroud to thermal growth of the turbine rotors, thereby controlling clearance.
363209
Cline Larry D.
Hauser Ambrose A.
Sidenstick James E.
Zlatic Mark S.
Company General Electric
Eckersley Raymond A.
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