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Title: Turbine seal assembly

Patent ·
OSTI ID:1083775

A seal assembly that limits gas leakage from a hot gas path to one or more disc cavities in a turbine engine. The seal assembly includes a seal apparatus that limits gas leakage from the hot gas path to a respective one of the disc cavities. The seal apparatus comprises a plurality of blade members rotatable with a blade structure. The blade members are associated with the blade structure and extend toward adjacent stationary components. Each blade member includes a leading edge and a trailing edge, the leading edge of each blade member being located circumferentially in front of the blade member's corresponding trailing edge in a direction of rotation of the turbine rotor. The blade members are arranged such that a space having a component in a circumferential direction is defined between adjacent circumferentially spaced blade members.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42644
Assignee:
Siemens Energy, Inc. (Orlando, FL)
Patent Number(s):
8,419,356
Application Number:
12/416,423
OSTI ID:
1083775
Country of Publication:
United States
Language:
English

References (13)

Device for sealing gas turbine stator blades patent April 2001
Rim seal for turbine wheel patent April 1996
Gas turbine with baffle reducing hot gas ingress into interstage disc cavity patent May 2003
Deflectors for controlling entry of fluid leakage into the working fluid flowpath of a gas turbine engine patent July 2007
Gas turbine shroud and platform seal system patent October 1999
Gap control system for turbine engines patent June 2007
Air sealing for turbomachines patent January 1984
Gas turbine seal apparatus patent February 2001
Angel wing seals for blades of a gas turbine and methods for determining angel wing seal profiles patent January 2003
Seal assembly for a rotary machine patent February 2005
Compressor system with movable seal lands patent June 2006
Turbine nozzle backflow inhibitor patent October 1994
Sealing apparatus for gas turbine patent November 2000

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