Rotating blade system for a row of rotating blades of a...

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

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F01D 5/16 (2006.01) F01D 5/22 (2006.01) F01D 5/26 (2006.01)

Patent

CA 2734071

The invention concerns a moving blade system for a moving blade sequence of a continuous-flow machine, in particular a thermal gas turbine with at least two moving blade segments (10a, 10b), of which each moving blade segment (10a, 10b) encompasses at least two moving blades (12) that are disposed, in reference to a rotation axis of the moving blade sequence, at least primarily radially between a radially interior and a radially exterior shroud band (14a, 14a', 14b, 14b') and are coupled to the shroud bands (14a, 14a', 14b, 14b'), wherein at least the radially exterior shroud bands (14b, 14b') of the two moving blade segments (10a, 10b) encompass contact surfaces (16a, 16b) that correspond to one another, wherein radial equilibrium axes (A) of neighboring moving blades (12) of the at least two moving blade segments (10a, 10b) are disposed in a tilted manner by respectively axially an angle (.alpha.a, .alpha.b) relative to their respective base inclination, wherein the angles (.alpha.a, .alpha.b) in regard to the base inclination feature opposite signs. The invention concerns furthermore a continuous-flow machine as well as a method for the mounting of a moving blade sequence for a continuous-flow machine.

L'invention concerne un système d'aubes mobiles pour une rangée d'aubes mobiles d'une turbomachine, notamment d'une turbine à gaz thermique, comportant au moins deux segments d'aubes mobiles (10a, 10b) dont chaque segment (10a, 10b) comprend au moins deux aubes mobiles (12) disposées au moins essentiellement de façon radiale par rapport à un axe de rotation de la rangée d'aubes mobiles, entre une bande de couverture radialement intérieure et une bande de couverture radialement extérieure (14a, 14a', 14b, 14b'), et accouplées aux bandes de couverture (14a, 14a', 14b, 14b'). Au moins les bandes de couverture (14b, 14b') radialement extérieures des deux segments d'aubes mobiles (10a, 10b) présentent des surfaces de contact (16a, 16b) qui se correspondent. Des axes d'équilibre radiaux (A) d'aubes mobiles adjacentes (12) des segments d'aubes mobiles (10a, 10b) sont inclinés respectivement de façon axiale de l'ordre d'un angle (aa, ab) par rapport à leur inclinaison de base respective, les angles (aa, ab) ayant des signes opposés par rapport à l'inclinaison de base. L'invention concerne également une turbomachine et un procédé de montage d'une rangée d'aubes mobiles pour une turbomachine.

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