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A multiphase flow meter

A multiphase flow and flowmeter technology, which is applied in the direction of fluid velocity measurement, volume flow measurement device, liquid/fluid solid measurement, etc., can solve the problem of not fully using the non-contact method, and achieve the reliability of test results. System stability, the effect of eliminating electromagnetic interference

Inactive Publication Date: 2015-09-16
北京乾达源科技有限公司
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AI Technical Summary

Problems solved by technology

At present, among all the multiphase flow metering devices, there is no device that directly measures the flow through the holdup and flow velocity by using the non-contact method

Method used

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Embodiment Construction

[0025] The working principle and specific implementation of the multiphase flow meter of the present invention will be firstly described below, and then its measurement effect will be illustrated with examples.

[0026] One aspect of the invention relates to a multiphase flow holdup detection method. The method is based on Lambert's law for the propagation of light in matter:

[0027] I = I 0 e - μ · 1 = I 0 e - μ m · ρ · 1

[0028] Among them, I is the intensity of the outgoing light, I 0 is the incident light intensity, μ is the attenuation coefficient of light in the material (including scattering attenuation and ab...

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PUM

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Abstract

The invention provides a multiphase flow flowmeter which comprises an each-phase-content measuring device and a multiphase flow velocity measuring device. The each-phase-content measuring device comprises an emitting device, a detector and a processor, wherein the emitting device can emit X rays of different energies to a multiphase flow body, the detector is used for detecting X rays exiting from the multiphase flow body, and the processor can calculate the content of each phase according to the attenuation coefficient of the X rays and the correlation between liquid content and oil-water ratio; and the processor is connected with the detector. The multiphase flow flowmeter provided by the invention can be used for metering the flow rate of oil, water and gas multiphase flow and can realize full non-contact measurement.

Description

technical field [0001] The invention relates to an instrument and meter for flow measurement of oil-water-gas multiphase flow. Background technique [0002] In recent years, with the improvement of customer demand and the production and transportation conditions of the petroleum industry, the level of production, education and research of oil-water-gas multiphase flowmeters has been continuously improved. Users have higher requirements for stable and accurate quantitative monitoring of oil, gas and water flow. Crude oil extracted from oil wells is a mixture of multiphase media such as oil, water, and natural gas. To process this mixture, gas-liquid separation must first be performed, and the remaining oil-water mixed liquid is dehydrated to obtain a product with a very low water content. export or sell. In a series of production activities such as crude oil gas-liquid separation and dehydration treatment, it is necessary to timely and accurately grasp the content and flow ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F7/00G01N23/00G01P5/18
Inventor 贺江林曹建倪孝禄
Owner 北京乾达源科技有限公司
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