Oil gas water three-phase plugged dispersed flow velocity measuring method

A technology of flow velocity measurement and dispersed flow, which is applied in fluid velocity measurement, velocity/acceleration/impact measurement, measuring devices, etc. It can solve the problems of reducing the success rate of related calculations, and achieve the effects of fast speed, low cost and convenient measurement

Active Publication Date: 2017-08-01
TIANJIN UNIV
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cross-correlation flowmeter requires obvious flow noise in the measured fluid, that is, obvious instantaneous holdup or flow velocity fluctuations, and a relatively stable flow state usually reduces the success rate of correlation calculations; at the same time, the distance between upstream and downstream sensors and the sensor response frequency Together determine the basic test error, and the error varies with the flow rate
Therefore, it has certain limitations when measuring the velocity of highly random fluids such as oil-gas-water three-phase plug-like dispersed flow.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Oil gas water three-phase plugged dispersed flow velocity measuring method
  • Oil gas water three-phase plugged dispersed flow velocity measuring method
  • Oil gas water three-phase plugged dispersed flow velocity measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The calculation method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] figure 1 Schematic diagram of an ultrasonic Doppler sensor in the measurement method of the present invention; a dual-crystal probe 1 is installed at the bottom of a pipeline 2 .

[0028] figure 2 It is a schematic diagram of ultrasonic Doppler measurement space in the measurement method of the present invention; the dual crystal probe is installed at the bottom of the pipeline and embedded in the 4 pipe walls. The CW Doppler measurement space is defined as the overlapping area of ​​the sound field where the sound waves are transmitted and received. Inside the pipe 5 area, the overlapping area of ​​the two parts of the sound field is the shaded area 3, which is the measurement space. The velocity information of the discrete phases in the fluid flowing through this region can be obtained by ultrasonic Doppler sensors. The projecti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an oil gas water three-phase plugged dispersed flow velocity measuring method. The oil gas water three-phase plugged dispersed flow velocity measuring method comprises steps that 1) a phase holdup measuring device is used to acquire various phase holdup information; 2) a continuous phase and dispersed phases of a three-phase plugged dispersed flow are determined according to the phase holdup; 3) receiving signals acquired by an ultrasonic transducer are demodulated, and Doppler frequency shift is acquired; 4) drag force between the continuous phase and a dispersed gas phase is calculated; 5) the drag force between the continuous phase and a dispersed liquid phase is calculated; 6) shearing force of a tube wall applied to the continuous liquid phase is calculated; 7) ternary non-linear equations related to uc, ug, ud are established; 8) by adopting a numerical iteration type algorithm for solution, the optimal estimations of the uc, the ug, and the ud are acquired; 9) a three-phase flow split phase apparent velocity is calculated.

Description

technical field [0001] The invention belongs to the technical field of fluid measurement, and relates to a measurement method of an ultrasonic sensor, which is used for the non-disturbance measurement of the velocity of an oil-gas-water three-phase plug-shaped dispersed flow. [0002] technical background [0003] Multiphase flow exists widely in daily life and industrial production processes, such as food processing, bioengineering, chemical industry, metallurgical industry and petroleum industry, and its main manifestations include two-phase flow, three-phase flow or four-phase flow. Among them, oil-gas-water three-phase flow is the most common flow form in oil extraction and transportation. Compared with single-phase flow or two-phase flow, the flow state of three-phase flow is more complicated, so the online process parameter detection of three-phase flow has always been the focus of scientific research and industrial circles. The measurement of water cut and flow veloci...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/24
CPCG01P5/242
Inventor 谭超董虓霄董峰
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap