Patent ID: 6217280
Filing Date: 2001-04-17
Classification: F01D

Abstract:
A turbine cooling system for cooling a turbine component, comprising:a stationary torque tube casing disposed in a turbine;a first rotating disk rotatable mounted with the turbine and having a duct for passage of a cooling medium;a spacer disk disposed within the turbine and a pair of flow guiding blades, disposed in the spacer disk, that define a flow guiding passage for passage of the cooling medium from the first rotating disk to a pressure changing mechanism and for changing a direction of flow of the cooling medium; and,the pressure changing mechanism having a diffusing channel with increasing cross sectional area, disposed in the torque tube casing, for receiving the cooling medium from the duct of the rotatable disk at a first pressure and changing the pressure of the cooling medium to a second pressure and wherein the second pressure has a magnitude that is higher than the first pressure, said turbine cooling system being a closed loop system.