Fluid handling – Diverse fluid containing pressure systems – Gas pressure storage over or displacement of liquid
Patent
1994-01-28
1995-06-13
Nilson, Robert G.
Fluid handling
Diverse fluid containing pressure systems
Gas pressure storage over or displacement of liquid
137489, 13750513, 13750547, G05D 1600
Patent
active
054233445
ABSTRACT:
A system, device, regulator and process for gas blanketing under precise gas pressure control is provided herein exhibiting extreme pressure sensitivity, position flexibility, smooth gas shutoff, for regulating the pressure of liquid storage vessels having vapor phases therein, and optionally being useful for gas blanketing of other units requiring positive gas pressures therein, such as pressurized rooms, duct, housings, such as computer housing, and the like, at pre-selected pressures of between 0.01 inches of water column and 15 inches of water column, with pressure sensitivities responsive to pressure changes of 0.01 inches of water column within a predetermined pressure set point. The system is compact, self contained, and requires no external source of power other than the supply pressure, which can range from about 10 psig to 1,000 psig. The system, device and regulator are not position sensitive, and may be properly operated in any orientation. The system, device and regulator are also resistant to clogging and have a minimum number of parts thereby minimizing cost and the risk of part failure.
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Fisher Controls, Nov. 1991, one page.
Conard Spencer D.
Nilson Robert G.
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