Variable nozzle for a gas turbine

Details Variable nozzle for a gas turbine Variable nozzle for a gas turbine

2008-04-08

2008-04-08

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

C415S160000

Reexamination Certificate

active

07354242

ABSTRACT:
Variable nozzle (10) for a gas turbine fixed to a shaft (11) equipped with a pressurized upper surface (12) and a depressurized lower surface (14) opposite to the upper surface (12), the variable nozzle comprises a series of substantially “C”-shaped sections, each having a first rounded end (20) and a second rounded end (21), each section of the series of sections also having the concavity facing upwards with respect to a base (90) and arranged one after another continuously, in the direction of an axis of the shaft (11) along a curved line (60), the at least second degree curved line (60) lies on a surface (70) having an axis orthogonal to the axis of the shaft (11) and also tilted with respect to the base (90) by an angle (80).

REFERENCES:
patent: 3685921 (1972-08-01), Dekeyser
patent: 4172361 (1979-10-01), Kronogar
patent: 4995786 (1991-02-01), Wheeler et al.
patent: 5088892 (1992-02-01), Weingold et al.
patent: 2002/0614249 (2002-05-01), Caubet et al.
patent: 19950227 (2000-11-01), None

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