Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Patent
1996-12-23
1998-05-26
Verdier, Christopher
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
415111, 415113, 415176, 277 74, 277 75, 277 961, F04D 2912
Patent
active
057558175
ABSTRACT:
A hydrostatic seal is provided having control of sealing surface taper and cavitation reduction structure between the sealing surfaces. Control of sealing surfaces taper is provided through one or more relief recesses in the seal wall to which flexing forces are applied by fluid pressure and temperature to reduce the effects of seal rigidity on the parallel relationship between the sealing surfaces. The cavitation reduction structure includes inclination of the channels leading to the sealing surface recesses in the direction of relative movement of the fluid between the sealing surfaces. Enlarged vortex chambers are disposed at the outlet of those channels within the recesses to isolate fluid vapor bubbles from the recess walls.
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Bond John Clark
Prouty Warren Conrad
Sundstrand Corporation
Verdier Christopher
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