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Ultrasonic meter flow measurement monitoring system

  • US 9,581,479 B2
  • Filed: 10/21/2013
  • Issued: 02/28/2017
  • Est. Priority Date: 04/08/2013
  • Status: Active Grant
First Claim
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1. An automated meter station monitoring system for a fluid comprising:

  • a processor having algorithms for verifying performance of a fluid flow measurement system;

    a pressure sensor operatively connected to said processor, said pressure sensor measuring the pressure of the fluid;

    a temperature sensor operatively connected to said processor, said temperature sensor measuring the temperature of the fluid;

    a gas chromatograph operatively connected to said processor, said gas chromatograph monitoring changes in gas composition and chromatograph response factors of the fluid;

    an ultrasonic meter operatively connected to said processor, said ultrasonic meter making at least one measurement of the velocity of the fluid, speed of sound of the fluid, actual flow rate of the fluid, and meter diagnostics; and

    a flow computer operatively connected to said processor, said flow computer recording pressure of the fluid, recording temperature of the fluid, recording gas composition of the fluid, calculating compressibility ratio of the fluid, calculating standard flow rate of the fluid, and calculating energy flow rate of the fluid;

    wherein the processor calculates at least one of the following parameters;

    velocity of the fluid, compressibility ratio of the fluid, actual flow rate of the fluid, standard flow rate of the fluid, speed of sound of the fluid, and energy flow rate of the fluid;

    wherein the processor compares one or more of said parameters to one or more corresponding parameters measured by the ultrasonic meter or the flow computer or the gas chromatograph to verify the performance of the fluid flow measurement system;

    wherein the processor calculates the energy flow rate of the fluid based on the standard flow rate calculated by the flow computer and a heating value measured by the gas chromatograph; and

    wherein the processor monitors a difference between the energy flow rate of the fluid calculated by the flow computer and the energy flow rate calculated by the processor.

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