Turbine assembly and turbine shroud therefor

Details Turbine assembly and turbine shroud therefor Turbine assembly and turbine shroud therefor

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 11/08 (2006.01) F01D 25/24 (2006.01)

Patent

CA 2518525

A turbine assembly includes a shroud (122) for being mounted around a last stage of the low pressure turbine rotor. The shroud (122) includes an arcuate body having spaced-apart forward and aft ends and spaced-apart circumferential ends. Attachments are provided for securing the shroud body to the surrounding engine case. An arcuate extension member (130) protrudes rearward from the aft end of the shroud body. The extension member (130) has an inner surface (132) which defines a portion of the gas flowpath through the engine. Seals may be provided to prevent leakage between adjacent shroud segments. The shroud (122) is especially useful for protecting a downstream turbine frame from debris and thermal stress.

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