Double-slot type porous plate type mixed transportation metering device

Abstract

The invention relates to a mixed transportation measuring device with a double-slot type and a perforated plate shape, which belongs to an on-line measuring instrument for high gas and condensate gas. A multiphase measuring meter has big errors when condensate natural gas is measured. The mixed transportation measuring device with the double-slot type and the perforated plate shape of the invention is formed through connecting an upper steam connecting flange, a measuring strait tube, an upper stream pressure taking device, a pressure stabilizing strait tube, a lower stream pressure taking device, a lower stream strait tube and a lower stream connecting flange in turn. A pressure transmitter is arranged on the lower stream strait tube, two pieces of slot-type perforated plates are arranged respectively in the upper stream pressure taking device and the lower stream pressure taking device, a temperature transmitter is arranged on the lower stream strait tube, and each transmitter is connected with a computer. Flowing processing software of the mixed transportation measuring device with the double-slot type and the perforated plate shape which is worked out according to a Murdock measuring model formula and artificial neural network technology transforms collected signals of pressures, pressure differences and temperatures into gas liquid flow quantity data, the flow quantity which is calculated is corrected through adopting the artificial neural network technology, and a final gas liquid measuring value is obtained.

Description

technical field [0001] The invention relates to a double-groove orifice-plate mixed transportation metering device, which is mainly used for multiphase metering of condensed oil and gas with high gas content, and belongs to the online metering instrument for oil and gas gathering and transportation pipelines in the petroleum industry. Background technique [0002] From the beginning of the 1980s to the present, multiphase flow metering technology at home and abroad has made important progress. Up to now, internationally recognized multiphase flowmeter products that have reached the level of commercialization and have been widely tested and applied in industrial sites include: Agar of Agar Corporation of the United States -301 / 401, MFM2000 from Haimo Company in China, Fluenta 1900 VI and RFM flowmeter from Roxor Company in Norway, Framo multiphase flowmeter from Framo Company in Norway, MEGRA flowmeter from Daniel Company in the United States, V-Cone flowmeter from McCrometer ...

AI Technical Summary

Problems solved by technology

However, due to the influence of changes in service conditions and error transmission, in some working conditions, the uncertainty of oil-water phase measurement may far exceed the limit of ±10%.

Most of the existing multiphase flowmeters measure oil-gas-water three-phase flow with a liquid content of 10% to 90%. range, the error must be large

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