MULTIPHASE FLOW METERING DEVICE BASED ON CURVED PIPE AND METERING METHOD

摘要

A multiphase flow metering device comprises: a pipeline comprising at least one segment of curved pipe, the cross section of the curved pipe being round, the plane where the curved pipe is located being vertically oriented, and the curved pipe having at least one vertically oriented cross section; a gamma-ray monitor comprising a gamma-ray transmitter and a gamma-ray detector arranged respectively on the upper and lower sides of the vertically oriented cross section of the curved pipe, wherein gamma rays emitted by the gamma-ray transmitter penetrate radially or non-radially along the vertically oriented cross section of the curved pipe to reach a gamma-ray receiver, and the gamma-ray monitor is a single-energy gamma-ray monitor or a dual-energy gamma-ray monitor; and a total-volume flow metering device located upstream or downstream of the curved pipe for calculating the total-volume flow of a multiphase flow. Also provided is a method for measuring the volume flow of each phase in a multiphase flow using the above multiphase flow metering device.