Axially fed hydrostatic bearing/seal

Details Axially fed hydrostatic bearing/seal Axially fed hydrostatic bearing/seal

1993-06-15

1994-05-10

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384114, 4151701, F16C 3206, F01D 1108

Patent

active

053102657

ABSTRACT:
This invention relates to a hydrostatic bearing having a journal 3 annularly circumscribed by a bearing 2 wherein a high pressure fluid is forced between the bearing and the journal axially. The high pressure fluid flowing axially along the journal in the bearing keeps the journal centered. A roughened or diamond knurled 11 inside surface interrupts the circumferential and axial flow of the fluid for improved rotor stability and less leakage. Other features include a tapered inner bore 9 to increase the bearing stiffness and a sharp edged inlet for greater control of the bearing stiffness and damping. The axially fed hydrostatic bearing combines the seal function and the bearing function for annular fluid flows along a journal.

REFERENCES:
patent: 4396302 (1983-08-01), Drevet et al.
patent: 4486105 (1984-12-01), Miyake et al.
patent: 4671676 (1987-06-01), Chen et al.
patent: 4684318 (1987-08-01), Mulders
patent: 4726692 (1988-02-01), Jansing et al.
patent: 4927326 (1990-05-01), von Pragenau
patent: 5017023 (1991-05-01), Sharrer et al.
Extending the life of the SSME HPOTP through the use of Annular Hydrostatic Bearings, Scharrer, Hibbs, Nolan and Tabibzadeh.
AIAA 92-3401 AIAA/SAE/ASME/ASEE 28th joint Propulsion Conference and Exhibit Jul. 6-8, 1992 Nashville, Tenn.
von Pragenau R., Damping Seals for Turbomachinery NASA TP-1987, Mar., 1982.

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