Gas mass flow metering valve

Details Gas mass flow metering valve Gas mass flow metering valve

1996-10-29

2000-05-23

Bennett, Henry

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

251118, 1374875, F16K 3112, F16K 4700

Patent

active

060654929

ABSTRACT:
A gas flow control valve which enables mass flow to be measured using a flow straightener in a valve entry duct, a tube for lengthening the entry duct into the valve, a valve element exit port with suitably radiused edges and a flow stabilizer in the valve exit duct. Upstream and downstream pressure taps are positioned immediately upstream of the flow straightener and downstream of the flow stabilizer respectively. This enables the flow rate to be controlled not by the formulas traditionally used for valve dimensioning, but by formulas derived from more accurate formulas used for calculating mass flow with standard members of a fixed restriction type.

REFERENCES:
patent: 4058141 (1977-11-01), Hasinger et al.
patent: 4149254 (1979-04-01), Molusis
patent: 4150811 (1979-04-01), Condit
patent: 4180100 (1979-12-01), Kolb et al.
patent: 4402485 (1983-09-01), Fagerlund
patent: 4406161 (1983-09-01), Locke et al.
patent: 5020568 (1991-06-01), Taylor
patent: 5271601 (1993-12-01), Bonzer et al.
patent: 5482249 (1996-01-01), Schafbuch et al.

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