Liquid purification or separation – Filter – Pipe or plate attached type
Patent
1978-08-21
1980-06-17
Cuchlinski, Jr., William A.
Liquid purification or separation
Filter
Pipe or plate attached type
210170, 210497R, B01D 3502
Patent
active
042082900
ABSTRACT:
A long, vertically disposed ocean water upwelling pipe, such as a cold water riser in an ocean thermal energy conversion facility, is fitted at its lower inlet end with a self-cleaning inlet screen. The screen includes a right conical frustum of loose metal netting connected at its larger upper end to the lower end of the pipe. A heavy, negatively buoyant closure is connected across the lower end of the frustum. A weight is suspended below the closure on a line which passes loosely through the closure into the interior of the screen. The line tends to stay stationary as the lower end of the pipe moves, as in response to ocean current vortex shedding and other causes, thus causing the closure to rattle on the line and to shake the netting. The included half-angle of the frustum is about 20.degree. so that, on shaking of the netting, marine life accumulated on the netting becomes loose and falls free of the netting.
REFERENCES:
patent: 1260241 (1918-03-01), Minton
patent: 2654482 (1953-10-01), Robinson et al.
patent: 2658625 (1953-11-01), Rafferty
patent: 2733775 (1956-02-01), Dupure
patent: 2774569 (1956-12-01), Jacobsen
patent: 3426910 (1969-02-01), Winzen
patent: 3435793 (1969-04-01), Shurtleff
Person Abraham
Wetmore Sherman B.
Cuchlinski Jr. William A.
Global Marine Inc.
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