OIL RETENTION AND DELIVERY SYSTEM FOR A BEARING

摘要

A bearing seal assembly of a rotary machine includes and inner shaft and an outer shaft. The outer shaft is disposed concentrically around and radially outward from the inner shaft. The space between the inner and outer shafts forms an annulus void. The inner shaft includes an oil inlet port through which lubricating oil enters the annulus void. A grooved structure is located on an inner surface of the outer shaft, and the grooved structure is configured to retain oil upon shutdown of the rotary machine. A bearing is located outside of the outer shaft. An oil outlet port is disposed in the outer shaft and is connected to the grooved structure for supplying lubricating oil to the bearing.

主权项

1. A bearing seal assembly of a rotary machine, the bearing seal assembly comprising:
an inner shaft; an outer shaft disposed concentrically around and radially outward from the inner shaft, wherein a space between the inner shaft and the outer shaft forms an annulus void; an oil inlet port in the inner shaft through which lubricating oil can enter the annulus void; a grooved structure disposed in an inner radial surface of the outer shaft, wherein the grooved structure forms an oil retaining reservoir configured to retain a lubricating oil upon shutdown of the rotary machine; a bearing located external to the outer shaft; and an oil outlet port disposed in the outer shaft and connected to the grooved structure, the oil outlet port configured to supply the lubricating oil from the grooved structure to the bearing.