Fluid handling – Processes
Patent
1986-08-11
1988-04-05
Rosenthal, Arnold
Fluid handling
Processes
138 44, 251118, 251121, 181268, F16K 4704, F16K 4708
Patent
active
047352248
ABSTRACT:
At the time of expansion and accompanying kinetic degradation of a flowing stream of fluid, the flow is stabilized by forming at least two contiguous flow streams which consist of the same fluid but have a different velocity distribution and the two streams are then mixed. When applying the method to a valve provided with a so-called "hemispherical" closure member for compressible fluids, subsonic discharge nozzles are formed by cutting recesses in the valve seat downstream of the zone in which the valve closure member bears on the valve seat in the closed position. The subsonic discharge nozzles are disposed in alternate sequence with supersonic discharge nozzles formed by the opposite surfaces of the valve closure member and of the valve seat outside the recesses. When the method is applied to a multi-bore pressure reducer for compressible gases, a pressure-reducing plate is provided with low-discharge ducts in adjacent relation to high-discharge ducts.
REFERENCES:
patent: 3105570 (1963-10-01), Bezemes
patent: 3750710 (1973-08-01), Hayner
patent: 3857542 (1974-12-01), Heymann
patent: 4402485 (1983-09-01), Fagerlund
patent: 4506860 (1985-03-01), Schwerdtner et al.
Centre Technique des Industries Mecaniques
Gerstman George H.
Rosenthal Arnold
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