Two-phase flow experiments with Coriolis Mass Flow Metering using complex signal processing

Abstract

Two-phase (gas/liquid) flow is common in many industrial applications but its measurement remains challenging for Coriolis mass flow meters (CMFM), especially for high Gas Void Fraction (GVF). In this paper, we present experimental results applying previously developed complex signal processing techniques for tracking the rapidly changing sensor signals generated by two-phase flow. The techniques are implemented in a new System-on-Chip (SOC) prototype transmitter connected to a commercial Coriolis flow tube. Experiments have been carried out over a range of single phase and two-phase (water/air) flows. The signal tracking as well as mass flow rate and density measurement performance is compared with that of a laboratory version of a commercial Coriolis transmitter with two-phase flow capability. The results show that the complex bandpass algorithms, coupled with flowtube control algorithms, reduce the standard deviation of the mass flow measurement by a factor of 3 or more in 50% of the experiments undertaken. For the density measurement, the corresponding reduction in standard deviation is by a factor of 6.

Water-Cut Measurement Techniques in Oil Production and Processing—A Review

“…A typical Coriolis meter consists of two flow tubes (i.e., the sensor element) oscillating 180 • out of phase at their natural frequency [37], which is connected in series with process piping, and an electronic transmitter, which is responsible for controlling the flow tube vibration, as shown in Figure 11 [38]. The transmitter carries out the measurement calculations and finally relays the measured data to the user [38].…”

A novel heterogeneous ensemble approach to variable selection for gas-liquid two-phase CO2 flow metering

“…Applications of Coriolis flowmeters to gas-liquid two-phase flow measurement have been attempted by using prototype transmitters and investigating into the use of the internal parameters (Green et al, 2008; Kunze et al, 2014;Li et al, 2018;Li et al, 2019). Coriolis flowmeters incorporating data-driven modelling algorithms have demonstrated a potential for multiphase flow measurement (Wang et al 2017).…”