Turbo engine

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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Details

F01D 11/22 (2006.01)

Patent

CA 2676012

The invention relates to a turbine engine, especially a gas engine, comprising a stator and a rotor, the rotor having rotor blades and the stator having a housing and guide vanes, the rotor blades at the rotor side forming at least one blade ring which adjoins on a radially outer end thereof a radially inner housing wall of the housing, said housing wall being configured as an outer ring (10). The blade ring is surrounded by said housing wall and delimits therewith a gap, said gap between the outer ring (10) of the housing and the radially outer end of the or each blade ring being adjustable by deformation of the outer ring (10). The invention is characterized in that the outer ring (10) is concentrically surrounded by an adjusting element (11) that is configured as a union ring, opposite faces (12, 13) of the outer ring (10) and the adjusting element (11) having the contour of a truncated cone, and rolling bodies (14) being positioned between the outer ring (10) and the adjusting element (11), said rolling bodies being put at an oblique angle in relation to the axial direction in the radial direction and in the peripheral direction, thereby making it possible for the adjusting element (11) to be rotated in relation to the outer ring (10) while simultaneously adjusting the gap.

L'invention concerne une turbomachine, notamment une turbine à gaz, comportant un stator et un rotor, le rotor étant doté d'aubes mobiles et le stator d'un carter et d'aubes mobiles. Les aubes mobiles côté rotor forment au moins une couronne dont une extrémité externe radiale est adjacente à une paroi interne radiale du carter formant un bord d'enveloppe (10), ladite couronne étant entourée par cette paroi et définissant avec celle-ci un espacement qui, entre le bord d'enveloppe (10) du carter et l'extrémité externe radiale de la ou de chaque couronne d'aubes mobiles, est réglable par changement de forme du bord d'enveloppe (10). Selon l'invention, le bord d'enveloppe (10) est entouré de manière concentrique par un dispositif de réglage formant un anneau de raccordement, des faces opposées (12,13) du bord d'enveloppe (10) et du dispositif de réglage (11) présentant un contour tronconique. Entre le bord d'enveloppe (10) et le dispositif de réglage (11), des éléments de roulement (14) sont positionnés à l'oblique dans le sens radial et dans le sens périphérique par rapport à l'axe, de sorte que le dispositif de réglage (11) peut tourner relativement au bord d'enveloppe (10), avec réglage simultané de l'espacement.

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