PIECE THERMOMECANIQUE DE REVOLUTION AUTOUR D'UN AXE LONGITUDINAL, COMPRENANT AU MOINS UNE COURONNE ABRADABLE DESTINEE A UN LABYRINTHE D'ETANCHEITE

The part has an abradable crown (58) for forming a labyrinth seal of a rotor/stator assembly. The crown is formed of angular sectors (581, 582) having different rigidity. Number of angular sectors having rigidity same as that of the abradable crown, is different from number of waves in a vibratory m...

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Bibliographische Detailangaben
Hauptverfasser:	TRICONNET NICOLAS, LOMBARD JEAN PIERRE, CAUCHETEUX MATHIEU, GARCIN FRANCOIS
Format:	Patent
Sprache:	fre
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The part has an abradable crown (58) for forming a labyrinth seal of a rotor/stator assembly. The crown is formed of angular sectors (581, 582) having different rigidity. Number of angular sectors having rigidity same as that of the abradable crown, is different from number of waves in a vibratory mode to be suppressed, of a rotor when the abradable crown is arranged on a stator. The angular sectors of the crown are made of abradable material having different Young's modulus of elasticity. Independent claims are also included for the following: (1) a rotor/stator assembly comprising a thermomechanical part (2) a method for avoiding appearance of instability during contact in a rotor/stator assembly of a turbomachine.