B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/22 (2006.01) F17C 13/04 (2006.01) G05D 16/06 (2006.01) G05D 16/16 (2006.01)
Patent
CA 2102908
2102908 9220956 PCTABS00017 A gas supply system in which the gas source is a permeable membrane unit and which is required to satisfy a variable demand is provided with more stable control of gas output purity, with respect to fluctuations in the pressure of feed gas applied to the membrane, by a valve configuration which comprises, in sequence from the membrane to a gas storage receiver, a flow-adjusting valve, a pressure differential maintaining device and a non-return valve. The pressure differential maintaining device comprises a main gas chamber, a pilot gas chamber, and a diaphragm between the chambers which operates a closure plug for the main chamber gas outlet. The plug is activated by the respective pressures in the main gas chamber and pilot gas chamber and has an associated means to bias it away from its seat. The pilot chamber has an associated pressurising line from a point in the pipework upstream of the pressure differential maintaining device.
Calor Air Separation Limited
Fetherstonhaugh & Co.
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