Rotary kinetic fluid motors or pumps – Casing and spaced housing with space vented to working fluid
Reexamination Certificate
2006-10-03
2006-10-03
Nguyen, Ninh H. (Department: 3745)
Rotary kinetic fluid motors or pumps
Casing and spaced housing with space vented to working fluid
C415S116000, C415S173200
Reexamination Certificate
active
07114914
ABSTRACT:
A device for controlling the clearance between the tips of rotary blades and a stationary ring assembly of a gas turbine, the device comprising a circular control box having at least two annular air circulation strips that are spaced apart from each other in the axial direction, each having a plurality of perforations in order to modify the temperature of the stationary ring assembly by discharging air, an annular air feed channel radially spaced from the air circulation strip, at least one air duct for feeding the feed channel with air, and a plurality of hollow distribution spacers connecting the air feed channel to the air circulation strips in order to feed the strips with air while enabling the air that has been discharged against the stationary ring assembly to flow between the feed channel and the circulation strips in order to be evacuated therefrom.
REFERENCES:
patent: 4337016 (1982-06-01), Chaplin
patent: 5281085 (1994-01-01), Lenahan et al.
patent: 6035929 (2000-03-01), Friedel et al.
patent: 39 09 369 (1989-10-01), None
patent: 0 541 325 (1993-05-01), None
patent: 2217788 (1989-11-01), None
Audeon David
Gendraud Alain
Roussin Delphine
Nguyen Ninh H.
Snecma Moteurs
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