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US 4,120,033 AGranted
Apparatus and method for determining pumping system head curves
AssigneeCorporate Equipment Company
InventorsAnthony Bruce Corso, James Burton Rishel
Life of this patent
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AssigneeCorporate Equipment Company
InventorsAnthony Bruce Corso, James Burton Rishel
Estimating the term…
There is disclosed apparatus and method for determining pumping head requirements for an operating pumping system by subtracting a desired delivery head or pressure from an actual head. The difference represents overpressure, and this overpressure is subtracted from a measured pump total dynamic head to establish the pumping head requirement of the system. The pumping head requirement data is recorded together with other data indicating a measured fluid flow rate. The data so recorded is in a form for plotting a system head curve. Once the system head curve is available it is possible to modify the supply system so as to avoid pumping at a pressure in excess of that which may be required for any given flow rate condition. Such avoidance of overpressure pumping produces an energy saving in the operation of the pumping system.
Recording apparatus for a fluid supply system comprising first measuring means for generating a first signal indicative of the actual pumping head at a supply point for said system, second measuring means for generating a second signal indicative of the actual fluid delivery pressure at a delivery point in said system, signal generating means for generating a third signal indicative of a desired fluid delivery pressure at said delivery point, combining means for combining said first, second and third signals to obtain a fourth signal indicative of said first signal reduced by an amount equal to the difference between said second and third signals, and first recording means for recording said fourth signal as an indication of a system head requirement.
Apparatus for generating a pumping system head curve comprising means for making repeated measurements of the overpressure at a delivery point in said system, means for making a series of measurements of the head at a supply point for said system in correspondence with said overpressure measurements, means for measuring a series of flow rates from said supply point to said delivery point in correspondence with said overpressure measurements and said head measurements, means for subtracting said overpressure measurements from said head measurements to obtain a series of required head indications, and means for recording said required head indications against the corresponding measured flow rates to define said head curve.
Dependencies are inferred from the claim text.