Fluid handling – Line condition change responsive valves – Line flow effect assisted
Patent
1994-05-17
1995-11-14
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
Line flow effect assisted
13750511, 13750512, 13750542, 137507, G05D 1606
Patent
active
054657504
ABSTRACT:
A two-stage regulator includes first and second regulator units in series. The regulator units are mounted upon a unitary base which forms the lower portion of each regulator and includes the inlets and outlets for each regulator unit as well as a passageway between the units. Each of the regulator units is of the diaphragm and main spring type. The first regulator unit, which operates upon the input high-pressure flow, includes a valve assembly proximate the diaphragm. The second regulator unit, which decreases the pressure of the intermediate pressure flow to the final low-pressure outlet flow includes a stem mounted to the diaphragm which terminates at a valve assembly displaced from the diaphragm body. In a preferred embodiment, the surface area of the low-pressure regulator unit is approximately 25% greater than the surface area of the high-pressure unit. The pressure control system of the second regulator unit may also include a nozzle assembly to increase the velocity of the exiting gas and a aspirator tube which utilizes the high velocity gas to modulate the diaphragm. Such a construction can provide high accuracy and rapid response of the system.
REFERENCES:
patent: 2057150 (1936-10-01), Kehl et al.
patent: 2288733 (1942-07-01), Neisemann
patent: 2313149 (1943-03-01), Jacobsson
patent: 2639730 (1953-05-01), Carter
patent: 2747607 (1956-05-01), Matasouic
patent: 3100504 (1963-08-01), Kauer
European Patents Abstracts, Week 9201, p. 97, EP 462583A--Honeywell.
European Patents Abstracts, Week 9110, p. 233, EP 415784A--DuPont.
British Patent Office, Offical Journal, Oct. 10, 1984, p. 839, GB 1,543,546--Honeywell.
Hepperle Stephen M.
Standard Keil Industries, Inc.
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