METHOD AND DEVICE FOR DETERMINING THE MASS FLOW RATE OF GAS Russian patent published in 2022 - IPC G01F1/34 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring equipment, primarily to the gas and oil industry. The method for measuring the mass flow rate of gas Q_m consists in the fact that the volume flow rate Q_v and the velocity head profile are measured simultaneously, and the mass flow rate Q_m is calculated by the ratio , where F is the average value of the velocity head of gas, S is the flow meter passage section at the point of the pipeline where the velocity head profile is measured, C is the aerodynamic coefficient of the velocity head sensors, K is the correction coefficient of the Q_v gas volume flow rate measurements based on the results of measuring the current velocity head profile of gas. A feature of the mass flow measurement device implementing the method is that a vortex flow meter is used as a volume flow meter, and the velocity pressure sensors are installed directly on the flow body that creates a vortex track.

EFFECT: reduction in the error of measuring the mass flow in real time over a wide range of changes in gas density and gas movement parameters due to the experimentally measured gas velocity head profile and adjusting the Q_v value depending on the results of measuring the gas velocity head profile.

2 cl, 6 dwg