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Non-contact type conductive measurement device and method for phase content of gas-liquid two-phase flow

A gas-liquid two-phase flow, non-contact technology, applied in the direction of material impedance, can solve the problems of few literature reports, achieve the effect of small pressure loss, avoid mutual interference of electric field, and simple structure

Active Publication Date: 2014-09-03
ZHEJIANG UNIV
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Problems solved by technology

However, at present, the research and application of this technology are mainly limited to the measurement of the conductance and ion concentration of the capillary or below-diameter solution in the field of analytical chemistry, etc., and the application in the measurement of gas-liquid two-phase flow phase holdup is still in its infancy. There are relatively few reports

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  • Non-contact type conductive measurement device and method for phase content of gas-liquid two-phase flow
  • Non-contact type conductive measurement device and method for phase content of gas-liquid two-phase flow
  • Non-contact type conductive measurement device and method for phase content of gas-liquid two-phase flow

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Embodiment Construction

[0021] Such as figure 1 As shown, the non-contact conduction gas-liquid two-phase flow phase holdup measurement device includes an AC excitation source 1, a first inductance module 2, a first electronic switch 3, a second electronic switch 4, a third electronic switch 5, and an insulating pipeline 6 , first electrode 7, second electrode 8, third electrode 9, fourth electrode 10, fifth electrode 11, sixth electrode 12, fourth electronic switch 13, fifth electronic switch 14, sixth electronic switch 15, electronic Switch control logic circuit 16, first signal processing module 17, second signal processing module 18, third signal processing module 19, data acquisition module 20, microcomputer 21, second inductance module 22, third inductance module 23; The electrode 7, the second electrode 8, the third electrode 9, the fourth electrode 10, the fifth electrode 11, and the sixth electrode 12 are evenly distributed around the outer wall of the insulating pipe 6, and the first electr...

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Abstract

The invention discloses a non-contact type conductive measurement device and method for the phase content of gas-liquid two-phase flow. The device comprises an alternating-current (AC) excitation source, an insulating pipeline, six electrodes, inductance modules, electronic switches, a logic electronic switch control circuit, signal processing modules, a data acquisition module and a microcomputer. According to the device, a six-electrode non-contact type conductive sensor is developed, and the condition that the six-electrode non-contact type conductive sensor is applied to the measurement of the phase content of the gas-liquid two-phase flow is realized. The method is a novel non-contact type conductive measurement technology which is applicable to the gas-liquid two-phase flow, of which a continuous phase is conductive liquid, and the electrodes of the sensor are not in direct contact with the flow, so that the flowing form of the gas-liquid two-phase flow is not affected, the problems of electrode polarization, electrochemical corrosion and the like of the traditional contact type conductive measurement methods are effectively solved, the influence on phase content measurement caused by flowing form change is overcome to a certain extent, and then, an effective novel way for the measurement of the phase content of the gas-liquid two-phase flow is provided.

Description

technical field [0001] The invention relates to a gas-liquid two-phase flow phase holdup measurement technology, in particular to a non-contact electrical conductivity gas-liquid two-phase flow phase holdup measurement device and method. Background technique [0002] Gas-liquid two-phase flow widely exists in many industrial processes such as petroleum, chemical industry, energy, and power. Phase holdup is one of the important parameters to characterize the characteristics of gas-liquid two-phase flow. Its online measurement plays an important role in the state monitoring, real-time control, safe operation, energy saving and efficiency enhancement of the two-phase flow system. Although there are many phase holdup measurement methods at present, due to the complexity of gas-liquid two-phase flow, the existing detection methods have not yet met the actual application requirements in industry, and the online measurement method of phase holdup still needs further research. rese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/02
Inventor 黄志尧常亚林翀王保良冀海峰李海青
Owner ZHEJIANG UNIV
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