| 摘要 |
FIELD: measuring equipment.SUBSTANCE: invention relates to measurement equipment and can be used for measuring mass flow of fluid flowing through pipelines, for example, during transportation of oil products. Coriolis-type mass flow meter includes housing, connected to housing inlet connector, two straight flow meter tubes, providing separation into two equal flows, outlet connector, through which stream comes out of flow meter into pipeline, vibrations exciter arranged in centre of flow tubes, broadband signal generator, which output is connected to vibrations exciter, two touch-sensitive receivers arranged at equal distances from exciter, wherein two straight flow tubes are mechanically clamped on both ends to form mechanical oscillating system, which arranged axially symmetrically in housing, transfer function calculating unit, which outputs are connected to outputs of exciter and touch-sensitive receivers, equipped with additional pipeline installed in housing, connected to outlet connector, additional vibrations exciter, narrow-band signal generator, which output of is connected to input of additional vibrations Exciter, series-connected additional sensor receiver, spectrum analyzer, gas concentration in liquid computing unit and liquid mass flow computing unit, as well as reference function interpolation unit, which input is connected to output of transfer function calculating unit, and its outputs are connected to corresponding inputs of generator.EFFECT: technical result of this invention is high accuracy of measuring of Coriolis type mass flow meter at measurement of liquid flow rate due to consideration of gas content.1 cl, 1 dwg |
