Compressor diffuser vane damper

摘要

An auxiliary power unit is disclosed that includes a compressor section having a compressor inlet and a compressor exit. A turbine section is arranged downstream from the compressor exit. A diffuser is disposed in fluid communication with and between the compressor section and the turbine section. The diffuser has multiple generally radially extending circumferentially arranged vanes. A shroud housing is secured against the vanes. A damper is arranged between at least one vane and the shroud housing and configured to damp vibration of the at least one vane relative to the shroud housing during operation of the auxiliary power unit.

主权项

1. An auxiliary power unit comprising:
a compressor section having a compressor inlet and a compressor exit; a turbine section arranged downstream from the compressor exit; a diffuser disposed in fluid communication with and between the compressor section and the turbine section, the diffuser including multiple generally radially extending circumferentially arranged vanes; a shroud housing secured against the vanes, wherein the vanes include a training end extending inwardly in a generally radial direction and tapering to a leading end; and a damper arranged between at least one vane and the shroud housing, the damper arranged at and engaging the leading end and configured to damp vibration of the at least one vane relative to the shroud housing.