Importance

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Abstract

A pump station positioned to receive a first flow of fluid from a pipeline and to discharge a second flow of fluid into the pipeline includes an interface detection instrument positioned at an upstream point and operable to measure a sonic velocity, a temperature, and a flow rate of the fluid at the upstream point. A first pump is operable at a first speed to receive the first flow of fluid and discharge a pressurized flow of fluid, a first discharge pressure controller is positioned within the pressurized flow of fluid and operable to control the pressure of the pressurized flow of fluid, and a control assembly is coupled to the interface detection instrument to receive the measured sonic velocity, temperature, and flow rate. The control assembly is operable to calculate a desired pump speed based at least in part on the measured sonic velocity and temperature and a variable frequency drive is coupled to the control assembly and is operable to adjust the first speed to match the desired speed at or before the arrival at the first pump of the fluid measured at the upstream point.

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First Claim