DETERMINATION AND IDENTIFICATION OF ANOMALIES IN FORK METERS Russian patent published in 2022 - IPC G01N11/16 G01N9/00 

FIELD: measuring technology.

SUBSTANCE: method for determining an anomaly in a fluid flow system is disclosed, while the system has a meter with submerged elements immersed in a fluid flow medium. The method contains: determination using the data processing scheme of the measured fluid density in the fluid flow system; determination using the data processing scheme whether the fluid flow system experiences a density anomaly, based on the ratio between the measured density and the expected fluid density in the fluid flow system; determination using the data processing scheme of the measured phase difference of oscillations of submerged elements of the meter; determination using the data processing scheme whether the fluid flow system experiences a phase anomaly, based on the ratio between the measured phase difference and the target phase difference of oscillations of submerged elements in the fluid flow; and identification using a data processing scheme of an anomaly in the fluid flow system based on determining the presence of a density anomaly and determining the presence of a phase anomaly, and the density anomaly is determined to indicate a gas capture anomaly if the measured density is less than the expected density by at least a threshold density difference, and if the anomaly of the fluid flow system is identified as representing an anomaly of gas capture, then using a data processing scheme it is determined if is it possible to confuse the identification of a gas capture anomaly with the identification of an erosion anomaly by determining whether one or more of the fluid and elements captured in the fluid can destroy submerged elements, based on data stored in the data processing scheme; and identification using the data processing scheme that the identification of a gas capture anomaly can may be confused with an erosion anomaly if there is data in the data processing scheme indicating that one or more of the fluid and the elements captured by the fluid are likely to destroy the submerged elements.

EFFECT: determination of the presence of a malfunction and identification of which malfunction causes a problem in the vibration flowmeter.

45 cl, 17 dwg