Patent ID: 7354242
Filing Date: 2008-04-08
Classification: F01D,F05D

Abstract:
1. A variable nozzle ( 10 ) for a gas turbine fixed to a shaft ( 11 ), said variable nozzle ( 10 ) comprising a pressurized upper surface ( 12 ) and a depressurized lower surface ( 14 ) opposite to the upper surface ( 12 ), wherein 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 an at least second degree curved line ( 60 ), wherein said 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 ).