Gas turbine blade shroud

Details Gas turbine blade shroud Gas turbine blade shroud

2006-10-30

2009-12-08

Kershteyn, Igor (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

C415S173500, C415S173600, C415S173100, C416S191000, C416S192000, C416S24100B

Reexamination Certificate

active

07628587

ABSTRACT:
A gas turbine blade shroud includes a platform and one or more fins extending toward a stator and side rails that extend radially toward the stator and along the edge of the platform. The increased wall thickness in the side regions of the blade shroud effects an increase in stiffness and a decrease in deformation during turbine operation. Due to a localised increase in wall thickness the mass of the blade shroud can be minimized such that mechanical loading is not significantly increased. The side rails can improve a lining up of adjacent blades and decrease a probability of hot gas leakage into the cavity between blade shroud and stator. The side rails have profile shapes that can be optimised in view of stiffness and mechanical loading and are suitable for casting. The blade shroud with side rails can have an improved life time.

REFERENCES:
patent: 3576377 (1971-04-01), Beanland et al.
patent: 4148494 (1979-04-01), Zelahy et al.
patent: 4243360 (1981-01-01), Wright
patent: 4326836 (1982-04-01), Fitton
patent: 4948338 (1990-08-01), Wickerson
patent: 5167485 (1992-12-01), Starkweather
patent: 5460486 (1995-10-01), Evans et al.
patent: 5823741 (1998-10-01), Predmore et al.
patent: 5971710 (1999-10-01), Stauffer et al.
patent: 6491498 (2002-12-01), Seleski et al.
patent: 7001152 (2006-02-01), Paquet et al.
patent: 2002/0127111 (2002-09-01), Tomita et al.
patent: 103 36 863 (2004-03-01), None
patent: 1 083 299 (2001-03-01), None
patent: 1331361 (2003-07-01), None
patent: 1 413 712 (2004-04-01), None
patent: 1426049 (1976-02-01), None
International Search Report.
European Search Report.

Affiliated with

Also associated with

Rating

Gas turbine blade shroud does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gas turbine blade shroud, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas turbine blade shroud will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4122840