Fluid handling – Plural tanks or compartments with parallel flow
Patent
1982-12-15
1984-07-24
Nilson, Robert G.
Fluid handling
Plural tanks or compartments with parallel flow
60403, 60410, 60416, 137464, 137509, F16K 1700
Patent
active
044613156
ABSTRACT:
A pressure protection system including a valve for isolating an auxiliary fluid circuit from a main fluid circuit when a leak occurs in the auxiliary fluid circuit. A valve is connected between a governor controlled compressor and the main fluid circuit and a pressure protection valve is connected between the compressor and an auxiliary fluid circuit. If a leak develops in the auxiliary fluid circuit, the pressure protection valve closes which permits most of the output from the compressor to be used to recharge the main fluid circuit. The pressure protection valve includes a supply passage and a delivery passage disposed substantially perpendicular to the supply passage. A plunger member is movable within the delivery passage for closing the supply passage when there is insufficient fluid pressure in the auxiliary fluid circuit. The pressure protection valve also includes a bypass orifice that permits a small amount of fluid to flow from the supply passage to the delivery passage when the supply passage is closed. If a leak develops in the auxiliary fluid circuit, the main fluid circuit does not lose pressure due to the leak because of the valve in the main fluid circuit. The pressure protection valve is also closed due to insufficient pressure because of a leak in the auxiliary fluid circuit and only a small portion of the compressor output is leaked through the bypass orifice in the pressure protection valve. This permits the main fluid circuit to be maintained at its peak operating pressure for maximum efficiency regardless of the fluid pressure condition in the auxiliary fluid circuit.
REFERENCES:
patent: 2244384 (1941-06-01), Bissinger
patent: 2591641 (1952-04-01), Troendle
patent: 3971404 (1976-07-01), Quarve
patent: 4085772 (1978-04-01), Roger
J. I. Case Company
Nilson Robert G.
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