Fluid handling – Self-proportioning or correlating systems – Flow rate responsive
Patent
1995-07-05
1996-04-16
Nilson, Robert G.
Fluid handling
Self-proportioning or correlating systems
Flow rate responsive
137312, G05D 1103
Patent
active
055073093
ABSTRACT:
An improved pressure differential regulator is disclosed for controlling pressure differentials within a supply source such as an electrolytic cell stack. The regulator is positioned downstream of the supply source and basically includes a first sensing chamber that receives a first fluid from the source; a second sensing chamber that receives a second fluid from the source; a multi-layered diaphragm secured between the first and second sensing chambers; a first contracted sensing chamber outflow restriction valve secured within the first sensing chamber between the diaphragm and a first fluid outlet; and, a second contracted sensing chamber outflow restriction valve secured within the second sensing chamber between the diaphragm and a second fluid outlet. In operation, if a sudden demand of first fluid downstream of the regulator decreases pressure within the first sensing chamber, the relatively higher pressure within the second sensing chamber will cause the multi-layered diaphragm to expand into and therefore contract the first sensing chamber. That causes the first contracted sensing chamber outflow restriction valve to restrict flow of the first fluid out of the first sensing chamber and supply source, thereby regulating the pressure differential between the first and second fluids within the supply source. The multi-layered diaphragm defines first and second leakage cavities to direct leaked fluids out of the regulator without unsafe mixing of the leaked fluids.
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Chisholm, Jr. Malcolm J.
Nilson Robert G.
United Technologies Corporation
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