Turbine shroud segment

Details Turbine shroud segment Turbine shroud segment

2003-12-23

2008-08-05

Look, Edward (Department: 3745)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

Reexamination Certificate

active

07407368

ABSTRACT:
A shroud segment is incorporated in a gas turbine engine so as to suppress influence of hot combustion gas on a turbine case which has a groove and a hook for engagement with the shroud segment. The shroud segment is provided with a back plate formed in an arc shape, a front end of the back plate being supported by the groove so as to allow displacement in an axial direction of the gas turbine engine, a slot circumferentially formed on an outer surface of the back plate, the slot being engaged with the hook so as to be immovable in the axial direction and a touching member integrally formed on an inner surface of the back plate for touching with a rotating turbine blade. The slot is configured so as to satisfy an inequality of v<t≦(v+0.1 mm), where v is a length of the hook and t is a width of the slot.

REFERENCES:
patent: 5188506 (1993-02-01), Creevy et al.
patent: 5188507 (1993-02-01), Sweeney
patent: 5333995 (1994-08-01), Jacobs et al.
patent: 6164656 (2000-12-01), Frost
patent: 6435820 (2002-08-01), Overberg
patent: 1 132 576 (2001-09-01), None
patent: 11-62509 (1999-03-01), None

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