Gas turbine engine

摘要

A power turbine receiving cooling fluid from compressor apparatus is provided. The turbine comprises: fixed housing structure; a support shaft rotatably supported in the housing structure; at least one disk overhung on the support shaft and coupled to the support shaft so as to rotate with the support shaft; and cooling fluid structure. The at least one disk is formed from a low-alloy-content steel. The cooling fluid supply structure extends through the support shaft and the at least one disk so as to supply cooling fluid to the at least one disk.

主权项

1. A power turbine receiving cooling fluid from compressor apparatus comprising:
fixed housing structure; a support shaft rotatably supported in said housing structure; first and second disks overhung on said support shaft and coupled to said support shaft so as to rotate with said support shaft, said first and second disks being formed from a low-alloy-content steel; a first plenum defined between said fixed housing structure and a radially extended section of said support shaft, said first plenum receiving a first stage cooling fluid; a second plenum defined between said fixed housing structure and said radially extended section of said support shaft, said second plenum located radially outward from said first plenum and receiving a second stage cooling fluid; and cooling fluid supply structure supplying said first and second stage cooling fluid and including structure extending through said support shaft and at least said second disk so as to supply cooling fluid from said second plenum to at least one cavity between said first and second disks.