EDUCTOR COOLED GAS TURBINE CASING

摘要

A cooling arrangement for a gas turbine power plant is disclosed in which cycle air is used in combination with atmospheric air as the cooling fluid. A plurality of eductor tubes with nozzles are disposed about the turbine casing and serve to direct pressurized cycle air into associated cooling holes. The cycle air gives momentum to the secondary atmospheric air and the cooling medium passes through the holes, removing heat therefrom. The use of cycle air in combination with atmospheric air also provides for compartment ventilation in a gas turbine of the enclosed type.