APPARATUS AND METHOD FOR MEASURING FLOW-RATE OF DIFFERENT FLUIDS PRESENT IN MULTIPHASE STREAMS

摘要

FIELD: measuring equipment.;SUBSTANCE: present invention relates to an apparatus and method 1 for measuring flow-rate of different fluids present in a plurality of distinct multiphase streams (C), in transit, each through a respective main flow pipe (2). Apparatus (1) comprises measuring unit (3) for each pipe (2). Each measuring unit (3) comprises a sampling device (4). Each measuring unit (3) comprises first and second measuring means (5) of differential pressure type situated downstream on process line of respective sampling device (4). Apparatus (1) comprises phase separator (8) connected with measuring unit (3). Apparatus (1) comprises selection means (18) interposed between measuring unit (3) and separator (8) for putting latter in communication with one of sampling devices (4) envisaged. Apparatus (1) comprises third measuring means (12) connected with separator (8) for measuring outgoing flow rates of different fluids separated and data processing means suitable for receiving and processing data obtained by measuring devices (5, 7, 12).;EFFECT: accurate measurement of flow rate of phases in multiphase flows; removal of considerable mass multiphase flows; reduced flow rate of discharged multiphase flow, and, consequently, reduced total labour input.;6 cl, 1 dwg