Thermal actuated valve for clearance control

Details Thermal actuated valve for clearance control Thermal actuated valve for clearance control

F - Mech Eng,Light,Heat,Weapons

02

K

60/80

F02K 3/04 (2006.01)

Patent

CA 1050285

THERMAL ACTUATED VALVE FOR CLEARANCE CONTROL Abstract of the Disclosure A shroud closely surrounding a high thermal inertia rotor is provided with a support structure having high thermal inertia characteristics. The support structure is selectively exposed to different temperature mediums during transient operation by way of a thermal actuated valve so as to cause a rapid growth thereof during periods of engine acceleration and a slow shrinkage thereof during periods of deceleration of the engine. In this manner the clearance relationship between the shroud and enclosed rotor is maintained at a minimum during periods of steady-state and transitional operation to thereby increase the efficiency of the combination.

245434

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