HYDROSTATIC BEARINGS IN SODIUM PUMPS,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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The paper deals principally with slot-type hydrostatic bearings because the throttle-type give negative results. The hydrostatic bearing studied was mounted on a pump rotated by a 36-kW electric motor. Behavior of the bearing was studied in four stages from 300 to 550C stage I, starting regime stage II, cyclic starts and stops stage III, bearing operation when the shaft is rotating at a third of rated rpm and stage IV, operation with sodium at a temperature of 530-550C to determine resistance of working couples of the bearing. These are to be regarded as qualitative since the opening of the bearing for inspection could have had a negative effect on wear. Supplementary studies are required for a final evaluation of the nature of wear in the working couples. It may, however, be concluded that the hydrostatic slot-bearings operate satisfactorily in sodium pumps. A combination of the friction couples studied may be used in hydrostatic bearings for operation in liquid sodium up to 400C.
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