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US 8,756,911 B1Granted
Turbine exhaust cylinder and strut cooling
AssigneeFlorida Turbine Technologies, Inc.
InventorGeorge Liang
Life of this patent
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Abstract
A turbine exhaust cylinder for an industrial gas turbine engine with an external blower that delivers cooling air to a heat shield jacket surrounding an outer diameter cylinder to provide impingement cooling for the cylinder. Spent impingement cooling air is collected as passed through a space formed between a fairing and a strut to provide cooling to these parts. The cooling air then provides cooling for the inner diameter cylinder before being discharged into the turbine exhaust gas or out from the turbine exhaust cylinder.
Claims6
An industrial gas turbine engine exhaust cylinder comprising:
- an inlet end connected to receive a turbine exhaust gas flow and an outlet end;
- an outer diameter cylinder and an inner diameter cylinder forming a flow path through the exhaust cylinder for the turbine exhaust gas;
- a fairing having an airfoil shape extending from the outer diameter cylinder to the inner diameter cylinder;
- a strut extending from an outer casing to an inner casing and passing through the fairing with a space formed between the fairing and the strut for cooling air to flow;
- a heat shield secured over the outer diameter cylinder and positioned between two adjacent struts;
- the heat shield having an internal cooling air channel with an inlet opening for cooling air and a plurality of impingement holes directed to discharge impingement cooling air to an outer surface of the outer diameter cylinder;
- and,
- a blower connected to the inlet opening of the heat shield to supply cooling air to the impingement holes.
5 more elements
Dependencies are inferred from the claim text.