Rotating assemblies of turbomachinery, foil journal bearing assemblies thereof, and methods for producing journals of the foil journal bearing assemblies

摘要

A rotating assembly of turbomachinery is provided. The rotating assembly includes a plurality of components mounted on a rotatable shaft within a housing of the turbomachinery and at least one foil journal bearing assembly for mounting the rotatable shaft to the housing. The foil journal bearing assembly includes an annular bearing carrier mounted to the housing. An annular bearing sleeve is disposed within the annular bearing carrier and attached thereto. The annular bearing sleeve is lined with a plurality of foils. A journal is mounted to the rotatable shaft. The journal has an outer surface engaging the foils. The journal is configured to at least one of the following: resist operational deflection thereof and reduce the effects of misalignment. A method for producing the journal of the foil journal bearing assembly is also provided.

主权项

1. A rotating assembly of turbomachinery, the rotating assembly comprising:
a plurality of components mounted on a rotatable shaft within a housing of the turbomachinery; and at least one foil journal bearing assembly for mounting the rotatable shaft to the housing, the foil journal bearing assembly comprising:
an annular bearing carrier mounted to the housing;an annular bearing sleeve disposed within the annular bearing carrier and attached thereto, the annular bearing sleeve lined with a plurality of foils; anda journal mounted to the rotatable shaft and having an outer surface engaging the foils, wherein the journal resists operational deflection, the journal has a stiffening rib that projects from one or more journal portions determined to be subject to operational deflection, and the stiffening rib projects from the journal toward the rotatable shaft.