Method and apparatus for metering multiple injection pump flow

Details Method and apparatus for metering multiple injection pump flow Method and apparatus for metering multiple injection pump flow

1998-07-08

2000-10-24

Walberg, Teresa

Pumps

With condition responsive pumped fluid control

Plural pump units with individual or relative control

417218, 417 53, 222 63, F04B 4900

Patent

active

061357243

ABSTRACT:
A system is provided for closed-loop control of a plurality of metering pumps driven by a single source of pressurized fluid. Feedback signals are generated that are proportional to output flow rate from each metering pump, such as velocity of a movable element of the pump with respect to a stationary element. Flow control valves are coupled between the source of pressurized fluid and the metering pumps. A controller receives the feedback signals and regulates flow from the flow control valves to each metering pump to maintain a desired level of output flow. The source of pressurized fluid may include a pressure compensated positive displacement pump having a maximum output flow rate at least equal to the anticipated combined flow rate of drive sections of the metering pumps.

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