Fluid handling – Plural tanks or compartments with parallel flow – Sequentially filled and emptied
Patent
1990-12-12
1992-04-21
Cohan, Alan
Fluid handling
Plural tanks or compartments with parallel flow
Sequentially filled and emptied
F17D 113
Patent
active
051058456
ABSTRACT:
A control apparatus for regulating liquid levels in liquid storage tanks to supplement a liquid supply serving a liquid operational system which includes a normally full primary liquid storage tank operable to selectively supplement the liquid supply serving the operational system, an input/output flowpipe connecting the liquid supply and operational system to the primary storage tank, and at least one normally full secondary liquid storage tank connected to the first tank, the input/output flowpipe and the liquid supply serving the operational system. The input/output flowpipe connecting the primary and secondary tanks has means to selectively open the secondary storage tank to the liquid supply serving the operational system when the system requirements cause liquid to flow from the primary storage tank so that liquid flows from the secondary storage tank to further supplement the system. When the liquid level in the secondary storage tank reaches a predetermined lower level, the input/output flowpipe to the secondary storage tank is closed to permit first the primary storage tank and then the secondary storage tank to refill.
REFERENCES:
patent: 2703138 (1955-03-01), Amon
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