Fluid handling – Self-proportioning or correlating systems – Supply and exhaust type
Patent
1979-07-19
1981-11-17
Spiegel, H. Jay
Fluid handling
Self-proportioning or correlating systems
Supply and exhaust type
92 98D, 92105, 92107, 251 58, 251284, 1375278, 91468, G05D 701
Patent
active
043005853
ABSTRACT:
A valve for automatically dumping a load of solids entrained within a fluid transport medium in response to flow interruption is disclosed. The automatic dump valve is particularly well-suited for use in combination with a nodule transport riser in deep ocean mining operations. The automatic dump valve system is combined with a tubular conduit defining a longitudinally extending flow passage having a sidewall opening defining a dump port. The automatic dump valve assembly includes a movable dump port cover plate and a hydraulic actuator coupled to the cover plate. The hydraulic actuator is operably responsive to pressure changes within the flow passage relative to the pressure exerted by a surrounding body of water to open and close the dump port. The hydraulic actuator is formed by the combination of a sidewall portion of the tubular conduit constricting the flow passage thereby defining a venturi flow region, and a pressure chamber housing enclosing the conduit section and defining an annular pressure chamber. The pressure chamber is divided by a movable piston into a first chamber which is connected in fluid communication with the venturi passage, and a second pressure chamber which is exposed to hydraulic pressure exerted by the surrounding body of water. The dump valve further includes a deflector plate mounted within the tubular housing for movement from a clear passage position to a dump position, with the deflector plate extending from the dump port transversely through the flow passage in the dump position thereby defining a bypass channel for diverting settling solids through the dump port.
REFERENCES:
patent: 357919 (1887-02-01), Gosch
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patent: 3180235 (1965-04-01), Schmitz
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patent: 3736077 (1973-05-01), Dane, Jr.
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patent: 3945394 (1976-03-01), Sullivan et al.
patent: 3957075 (1976-05-01), Kunz et al.
patent: 4098285 (1978-07-01), Karing
SEDCO, Inc.
Spiegel H. Jay
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