ANNULAR ELEMENT OF A TURBOMACHINE CASING

摘要

The invention relates to the field of turbomachines, and more specifically to an annular element (13) for a turbomachine casing, which has at least one inside face (14) defining a flow passage for a working fluid of the turbomachine, an outside face (15), and a damper (18), comprising at least one resilient coil turn (18a, 18b, 18c) fitted tightly around a surface of revolution (15a) of the outside face (15), in such a manner as to exert pressure on said surface of revolution (15a). The present invention also relates to damping a rotating wave of distortion of such an annular element (13) for a turbomachine casing, wherein said rotating wave is damped by friction between said surface of revolution (15a) and the at least one coil turn (18a, 18b, 18c) of the damper (18).

主权项

1. An annular element for a turbomachine casing, the annular element having at least:
an inside face, defining a flow passage for a working fluid of the turbomachine; an outside face; and a damper comprising a plurality of touching resilient coil turns fitted tightly around a surface of revolution of the outside face, in such a manner as to exert pressure on said surface of revolution and between adjacent coil turns.