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1. (US20140147278) VARIABLE-PITCH NOZZLE FOR A RADIAL TURBINE, IN PARTICULAR FOR AN AUXILIARY POWER SOURCE TURBINE

Office : United States of America
Application Number: 14122490 Application Date: 31.05.2012
Publication Number: 20140147278 Publication Date: 29.05.2014
Publication Kind : A1
Prior PCT appl.: Application Number:PCTFR2012051217 ; Publication Number: Click to see the data
IPC:
F01D 9/02
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
9
Stators
02
Nozzles; Nozzle boxes; Stator blades; Guide conduits
CPC:
F01D 9/02
Applicants: Demolis Jacques
TURBOMECA
Minel Laurent
Vignau Hubert Hippolyte
Inventors: Demolis Jacques
Minel Laurent
Vignau Hubert Hippolyte
Priority Data: 11 54801 01.06.2011 FR
Title: (EN) VARIABLE-PITCH NOZZLE FOR A RADIAL TURBINE, IN PARTICULAR FOR AN AUXILIARY POWER SOURCE TURBINE
Abstract: front page image
(EN)

A radial turbine nozzle of a turbine engine rotating about a central axis includes a first annular array of fixed blades and a second annular array with a same number of variable-pitch blades. The blades have pressure and suction surfaces. Each variable-pitch blade is connected to cups and is configured to be rotated by a controller about a geometric axis connecting centers of the cups. Each variable-pitch blade is mounted at a distance from the axis of the cups such that this axis of rotation is positioned facing the suction surface of the blade and substantially closer to a trailing edge than to a leading edge of that blade. The nozzle can modify the reduced flow admitted by a radial turbine in accordance with requirements of a thermodynamic cycle and produce a seal in an area of maximum load of the nozzle blades.


Also published as:
CA2837498CN103582742EP2715071JP2014516133KR1020140038453RU2013155488
FR2976018RU0002632061IN10691/DELNP/2013WO/2012/164227