Active control of bucket cooling supply for a turbine by means of an adjustable gas flow valve comprising a shape memory material

摘要

A cooling gas flow control device (63) for a turbine rotor (34, 36, 38) that is internally located between the compressor (4) and the turbine section (8) of a turbine (2) is disclosed. The cooling gas flow control device (63) has a shape memory material (72-76, 172, 181-183, 272, 281-283, 372) that is used to actively adjust the cooling gas flow to internal parts of the turbine section (8) between, including the buckets (40, 42, 44).