OIL METERING ASSEMBLY Russian patent published in 2004 - IPC

FIELD: measurement technology, determination of composition and flow rate of oil- or hydrogen-containing fluids. SUBSTANCE: characteristic feature of assembly is presence of second receiving coil in nuclear magnetic resonance spectrometer. Transmitting coil is chosen with the proviso that formation of number of nuclei under condition of nuclear magnetic resonance in volume V₀ of flow under action of 90-degree pulse with provision for recording of fall of signals of nuclear magnetic resonance, high-speed fall of signals of nuclear magnetic resonance caused by output of V₀ from coil K1 and spectrum of nuclear magnetic resonance by coil K1 at minimal velocity of motion of flow. Length of coil K1 is determined on condition that high-speed fall is recorded at minimal velocity of flow. Coil K2 is fabricated for realization of additional complement of spectrum of nuclear magnetic resonance. Detector is designed for simultaneous cut in by signal of processor of coils K1 and K2 after exposure to 90-degree pulse and termination of transient process and for simultaneous cutting out of coils K1 and K2 prior to sending of signal from processor to pulse generator. EFFECT: determination of composition and flow of unprepared flows, that is, if fluid has solid, colloidal, liquid and gaseous phases at same time, gaseous phase being both dissolved and free. 2 dwg