High recovery sonic gas valve

Details High recovery sonic gas valve High recovery sonic gas valve

2006-05-16

2006-05-16

Look, Edward K. (Department: 3751)

Valves and valve actuation

With material guide or restrictor

Movable or resilient guide or restrictor

C251S124000

Reexamination Certificate

active

07044434

ABSTRACT:
A high recovery sonic gas valve design with the inlet flow entering transverse and orthogonal to the outlet flow is presented. The configuration cancels the effects of the inlet flow entering orthogonal to the axis of the nozzle and diffuser. The inlet passage is curved in a manner to let the flow enter along the centerline of the nozzle and diffuser. The nozzle is contoured and provides upstream flow impedance. The diffuser is contoured with the area gradient varying from a low positive value at the nozzle throat then to a maximum value and finally dropping off significantly to near zero prior to the nozzle exit. The diffuser is nearly cylindrical and may extend past the valve outlet flange and protrude into adjacent piping.

REFERENCES:
patent: 3889537 (1975-06-01), Khuzaie
patent: 4413646 (1983-11-01), Platt et al.
patent: 4707278 (1987-11-01), Breyer et al.
patent: 4721284 (1988-01-01), Bankard
patent: 6105614 (2000-08-01), Bohaychuk et al.

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