Transportable High Vertical-Lift Emergency Water Pumping System
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United States of America Patent
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N/A
Issued Date -
Jul 2, 2015
app pub date -
Dec 30, 2013
filing date -
Dec 30, 2013
priority date (Note) -
Abandoned
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Abstract
A transportable high vertical-lift emergency water pumping system moves emergency water from a water source at a low elevation to a higher elevation. The pumping system has a first pump having a first-pump suction port at the higher elevation and a second pump having a second-pump suction port at the low elevation and a second-pump discharge port in fluid communication with the first-pump suction port. A variable speed driver is operatively coupled to the first pump. A load sensing hydrostatic drive system is operatively coupled to the variable speed driver and to the second pump. The load sensing hydrostatic drive system is configured to maintain a minimum net positive suction head at the first-pump suction port sufficient to prevent cavitation in the first pump when the variable-speed driver operates at any speed of a plurality of speeds across a range of flows.
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