Back to results
US 8,475,121 B1Granted
Ring segment for industrial gas turbine
AssigneeFlorida Turbine Technologies, Inc.
InventorGeorge Liang
Life of this patent
Estimating the term…
Abstract
A ring segment for a turbine in an industrial gas turbine engine, the ring segment having an inner side with a number of pedestals extending radially inward, each pedestal having an inlet metering hole connected to a diffusion chamber having an opening flush with a TBC covering the pedestals. The pedestals form a larger surface area to secure the TBC to the ring segment so that the TBC can be formed thicker than the prior art without spalling.
Claims10
A ring segment for a turbine in an industrial gas turbine engine, the ring segment comprising:
- a back side surface forming an impingement cooling;
- an inner surface having a plurality of pedestals extending outward;
- each of the pedestals having an inlet metering hole and an outlet diffusion chamber;
- and,
- a thermal barrier coating covering the sides of the pedestals with an opening of the outlet diffusion chambers being flush with a surface of the thermal barrier coating.
2 more elements
An industrial gas turbine engine comprising:
- a turbine with a stage of rotor blades each having a blade tip;
- a blade outer air seal forming a seal with the blade tips;
- the blade outer air seal being formed from multiple ring segments;
- each ring segment having an inner side with a plurality of pedestals extending radially inward;
- each pedestal having an inlet metering hole connected to a diffusion chamber with an outlet opening;
- and,
- a thermal barrier coating formed around the pedestals with the thermal barrier coating surface being flush with the outlet openings of the diffusion chambers.
4 more elements
Dependencies are inferred from the claim text.