Clearance control system for a rotary machine and method of controlling a clearance

The present invention provides a clearance control system for a rotary machine and a method of controlling a clearance. The clearance control system includes an outer casing including an outer casing main portion having a first radial thickness, wherein the outer casing is configured to expand at a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DANESCU RADU IOAN, JOHNSON DAVID MARTIN
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The present invention provides a clearance control system for a rotary machine and a method of controlling a clearance. The clearance control system includes an outer casing including an outer casing main portion having a first radial thickness, wherein the outer casing is configured to expand at a first time rate of thermal expansion. Also included is an inner casing disposed between the outer casing and a rotary portion, the inner casing including an inner casing main portion having a second radial thickness that is less than the first radial thickness, wherein the inner casing is configured to expand at a second time rate of thermal expansion that is greater than the first time rate of thermal expansion of the outer casing. Further included is an inner casing leg configured to separate from an outer casing leg during expansion of the inner casing and configured to engage the outer casing leg during contraction of the inner casing.