Active clearance control system for a turbomachine

Details Active clearance control system for a turbomachine Active clearance control system for a turbomachine

F - Mech Eng,Light,Heat,Weapons

02

K

60/133, 60/185

F02K 99/00 (2009.01) F01D 11/24 (2006.01) F04D 29/58 (2006.01)

Patent

CA 1159660

13LN-1386 ACTIVE CLEARANCE CONTROL SYSTEM FOR A TURBOMACHINE ABSTRACT OF THE DISCLOSURE An axial compressor is provided with a cooling air manifold surrounding a portion of the shroud, and means for bleeding air from the compressor to the manifold for selectively flowing it in a modulating manner axially along the outer side of the stator/shroud to cool and shrink it during steady-state operating conditions so as to obtain minimum shroud/rotor clearance conditions. Provision is also made to selectively divert the flow of cooling air from the manifold during transient periods of operation so as to alter the thermal growth or shrink rate of the stator/shroud and result in adequate clearance with the compressor rotor.

356513

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