METHOD AND APPARATUS FOR MEASURING MASS FLOW RATE OF INDIVIDUAL COMPONENTS OF TWO-PHASE LIQUID MEDIUM

摘要

METHOD AND APPARATUS FOR MEASURING MASS FLOW RATE OF INDIVIDUAL COMPONENTS OF TWO-PHASE GAS-LIQUID MEDIUM A method for measuring mass flow rate of individual components of two-phase medium comprises feeding a flow of a medium to be measured through a hollow pendulum, imparting undamped oscillations to the pendulum, measuring energy required to maintain a constant oscillation velocity, the mass flow of the medium being assumed proportional to the measured energy value and the average density of the medium being assumed proportional to the measured fundamental frequency of the pendulum, and determining mass flow of each component from mathematical relationships. An apparatus for carrying out the method for measuring mass flow rate of individual components of two-phase medium comprises a sealed housing accommodating a hollow pendulum supported therein. The housing mounts and electromagnetic coil for imparting undamped oscillations to the pendulum and an electromagnetic coil for converting oscillation velocity. Output frequency signals of converters are proportional to mass flow rate of two-phase medium and to the density of the two-phase medium being measured. The apparatus for carrying out the method for measuring mass flow rate of individual components of two-phase gas -liquid medium according to the invention provides for measuring mass flow rate of individual components of a two-phase medium without recurrence to additional separation of the flow thus facilitating the measurements and making them more reliable.