Patent ID: 11879411
Assignee: GENERAL ELECTRIC COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 17:
18. The cooling system of claim 17, further comprising:
a forward bleed port defined in the casing and being in fluid communication with the forward rotor cavity;
a forward bleed line fluidly coupled to the forward bleed port for receiving a flow of forward bleed air from the forward rotor cavity;
an aft bleed port defined in the casing and being in fluid communication with the aft rotor cavity; and
an aft bleed line fluidly coupled to the aft bleed port for receiving a flow of aft bleed air from the aft rotor cavity, wherein the flow control system comprises a bleed control valve fluidly coupled to the aft bleed line for regulating a flow of aft bleed air, wherein the aft supply line is fluidly coupled to the aft bleed port, wherein the flow control system further comprises:
a check valve fluidly coupled to the forward bleed line to prevent backflow into the forward rotor cavity;
a forward control valve fluidly coupling the forward bleed line to the forward supply line and selectively providing the flow of forward bleed air or the flow of forward cooling fluid through the forward rotor cavity; and
an aft control valve fluidly coupled to the aft supply line for regulating the flow of aft cooling fluid through the aft supply line and through the aft rotor cavity.