Angular sector of a stator for a turbine engine compressor, a turbine engine stator, and a turbine engine including such a sector

摘要

A stator angular sector for a turbine engine compressor including: an outer shroud and an inner shroud, and at least one vane extending radially between the shrouds. The outer shroud includes first and second mounting mechanisms for mounting the stator angular sector on a casing of the engine, which mechanisms are oriented parallel to the axis in opposite directions and connected together by an intermediate portion. The outer shroud includes at least one axial end portion extending from the intermediate portion with which at least one damper-forming insert is configured to come into contact, such that beyond a given value for amplitude of vibration of the end portion, the damper insert and the end portion are configured to move relative to each other to vary total moving mass moving with the end portion, thereby modifying vibratory behavior of the end portion.

主权项

1. A stator angular sector for a turbine engine compressor, the sector extending around an axis of radial symmetry, and comprising:
an outer shroud and an inner shroud arranged coaxially one inside the other; and at least one vane extending radially between the shrouds and connected thereto at its radial ends; wherein the outer shroud includes first and second mounting means for mounting the stator angular sector on a casing of the engine, the first and second mounting means being oriented parallel to the axis in opposite directions and being connected together by an intermediate portion; wherein the outer shroud includes at least one axial end portion extending from the intermediate portion, provided with a free end, and connected to the radially-outer end of the vane; wherein at least one damper-forming insert is configured to come into contact with the end portion; and wherein beyond a given value for amplitude of vibration of the end portion, the damper-forming insert and the end portion are configured to move relative to each other so as to vary the total mass moving with the end portion, thereby modifying vibratory behavior of the end portion.