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Device and method for measuring parameters of gas-liquid two-phase flow in micro-pipes based on thermal measurement method

A gas-liquid two-phase flow and measurement method technology, applied in the field of micro-pipe gas-liquid two-phase flow parameter measurement devices, can solve problems such as few related researches, and achieve the effects of rich parameter information, simple structure and low cost

Inactive Publication Date: 2011-06-15
ZHEJIANG UNIV
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  • Application Information

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Problems solved by technology

However, there are few related studies on the measurement of two-phase flow parameters in the microtube environment.

Method used

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  • Device and method for measuring parameters of gas-liquid two-phase flow in micro-pipes based on thermal measurement method
  • Device and method for measuring parameters of gas-liquid two-phase flow in micro-pipes based on thermal measurement method
  • Device and method for measuring parameters of gas-liquid two-phase flow in micro-pipes based on thermal measurement method

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Embodiment Construction

[0034] Such as figure 1 , 2 As shown, the micropipe gas-liquid two-phase flow parameter measurement device based on the thermal measurement method includes a measurement micropipe 1, a first thermal resistance temperature sensor 2, a second thermal resistance temperature sensor 3, a third thermal resistance temperature sensor 4, a Four thermal resistance temperature sensors 5, a constant temperature difference measurement circuit 6, a third thermal resistance temperature-voltage conversion circuit 7, a fourth thermal resistance temperature-voltage conversion circuit 8, a data acquisition system 9 and a computer 10; One thermal resistance temperature sensor 2, the second thermal resistance temperature sensor 3, the third thermal resistance temperature sensor 4, the fourth thermal resistance temperature sensor 5, the first thermal resistance temperature sensor 2, the second thermal resistance temperature sensor 3 and constant temperature difference measurement The circuit 6 is ...

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Abstract

The invention discloses a device and a method for measuring parameters of gas-liquid two-phase flow in micro-pipes based on a thermal measurement method. The device comprises a measurement micro-pipe, temperature sensors, a signal conditioning circuit, a data collection system and a computer. The temperature sensors are respectively mounted at four positions of an internal insulation layer of the measurement pipe wall; a first thermal resistor is used for measuring the flow temperature before heating; a second thermal resistor is used for heating and measuring the flow temperature; and a third thermal resistor and a fourth thermal resistor are used for measuring the flow temperature after heating. The third thermal resistor and the fourth thermal resistor are used for correlative operation to obtain the flow velocity information; the first thermal resistor, the second thermal resistor and an outer circuit constitute a constant-temperature-different measurement circuit so as to analyze signals to obtain the porosity information; and finally, the volume of the two-phase flow can be calculated by derivation. The invention provides an effective way for solving the parameter measurement problem of the gas-liquid two-phase flow in the micro-pipe, and the related device has the advantages of simple structure, no invasion, low cost, and the like, and provides sufficient parameter information for the two-phase flow measurement.

Description

technical field [0001] The invention relates to the technical field of two-phase flow detection, in particular to a micropipe gas-liquid two-phase flow parameter measurement device and method based on a thermal measurement method. Background technique [0002] Two-phase flow exists widely in petroleum, chemical industry, energy and other fields. As a typical two-phase flow phenomenon, gas-liquid two-phase flow is ubiquitous in nature and industrial production. With the progress of production equipment manufacturing, more microsystems appear, and the microsystems formed by the reduction of physical size have the advantages of small space, less mass energy consumption and short response time, so micropipe two-phase flow is also more occur during production. Due to the decrease of hydraulic diameter, the increase of channel area / volume ratio and the obvious effect of surface tension in micro-pipelines, the micro-pipelines are different from the situation of conventional pipeli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20G01K7/16G01P5/00
Inventor 冀海峰张立伟黄志尧王保良李海青
Owner ZHEJIANG UNIV
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