Back to results
US 12,000,722 B2Granted
Coriolis meter
AssigneeCorvera, LLC
InventorDaniel Gysling
Life of this patent
Estimating the term…
Abstract
In accordance with example embodiments of the present disclosure, a method for determining parameters for, and application of, models that correct for the effects of fluid inhomogeneity and compressibility on the ability of Coriolis meters to accurately measure the mass flow and/or density of a process fluid on a continuous basis is disclosed. Example embodiments mitigate the effect of multiphase fluid conditions on a Coriolis meter.
Claims21
A Coriolis flowmeter comprising:
- at least one flow tube configured to convey a process-fluid there through;
- a drive system configured to vibrate the at least one flow tube at a first natural frequency and a second natural frequency;
- electronics configured to determine a first measured process fluid density using the first natural frequency and a second measured process fluid density using the second natural frequency;
- a plurality of sensors positioned proximate the at least one flow tube configured to measure a speed of sound of the process fluid;
- an error model configured to use the speed of sound and the first measured process fluid density and the second measured process fluid density to quantify at least one effect of decoupling on the first measured process fluid density and to quantify at least one effect of decoupling on the second measured process fluid density;
- the electronics configured to determine a corrected density of the process fluid in real time;
- and
- a reporting device to report the corrected density of the process fluid.
5 more elements
A flow metering system comprising:
- a process-fluid in one or more conduits;
- actuator(s) for vibrating said one or more conduits;
- a sensor engaged with said one or more conduits for determining a process-fluid gas void fraction and a reduced frequency;
- a model for interpreting process-fluid mass flow rate and/or density by the vibrational characteristics of said one or more conduits;
- a calibration of said vibrational characteristics that is applicable for homogeneous flows at a known or sufficiently low reduced frequency;
- a model to correct interpreted process-fluid mass flow rate and/or density based on said calibration, applicable for homogeneous flows at a known or sufficiently low reduced frequency;
- and
- wherein a plurality of correction terms for a plurality of effects of decoupling are determined substantially as a function of the process-fluid gas void fraction and the plurality of correction terms for a plurality of effects of compressibility are determined substantially as a function of the reduced frequency.
5 more elements
Dependencies are inferred from the claim text.