Fluid handling – Systems – With flow control means for branched passages
Patent
1980-09-15
1982-05-11
Michalsky, Gerald A.
Fluid handling
Systems
With flow control means for branched passages
37DIG8, 137547, 137862, 137875, F16K 1114
Patent
active
043288359
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: 3147773 (1964-09-01), Matthews et al.
patent: 3270775 (1966-09-01), Alderson
patent: 3307576 (1967-03-01), Himes et al.
patent: 3331394 (1967-07-01), Hefler et al.
patent: 3429062 (1969-02-01), Nelson
patent: 3736077 (1973-05-01), Dane
patent: 3945394 (1976-03-01), Sullivan et al.
patent: 4041762 (1977-08-01), Shurtleff
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