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Novel gas-liquid two-phase annular flow liquid film mass flow measurement device and method

A mass flow, measuring device technology, applied in the direction of volume flow measuring device, measuring device, liquid/fluid solid measurement, etc., can solve the problems of inaccurate measurement, slow response speed, etc., to achieve accurate measurement, avoid errors, and accurately take out and metered effects

Active Publication Date: 2019-03-29
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new gas-liquid two-phase annular flow liquid film mass flow measurement device and method to solve the problem that the prior art is only suitable for low flow rate and small flow liquid film extraction, slow response speed, inaccurate measurement, etc. question

Method used

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  • Novel gas-liquid two-phase annular flow liquid film mass flow measurement device and method
  • Novel gas-liquid two-phase annular flow liquid film mass flow measurement device and method
  • Novel gas-liquid two-phase annular flow liquid film mass flow measurement device and method

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Embodiment 1

[0037] Example 1, a novel gas-liquid two-phase annular flow liquid film mass flow measurement device.

[0038] like figure 2 As shown, the new gas-liquid two-phase annular flow liquid film mass flow measurement device provided by the present invention includes a liquid film take-out and collection mechanism, a liquid film detection mechanism, a mass flow measurement mechanism and an automatic control system.

[0039] The liquid film take-out and collection mechanism is used to realize the take-out and collection of the liquid film in the gas-liquid two-phase annular flow. The liquid film taking and collecting mechanism includes a porous permeable tube 1 , an expansion tube 10 , an electric telescopic tube 9 , a liquid storage container 2 and an air pump 7 . The liquid storage container 2 is a container with a cuboid structure made of plexiglass, which is used to store the liquid film taken out from the pipeline. In the present invention, the pipeline for taking out the liqu...

Embodiment 2

[0049] Example 2, a novel gas-liquid two-phase annular flow liquid film mass flow measurement method.

[0050] The novel gas-liquid two-phase annular flow liquid film mass flow measurement method provided by the present invention comprises the following steps:

[0051]a. Build a new gas-liquid two-phase annular flow liquid film mass flow measurement device. For the specific introduction of the liquid film mass flow measurement device, refer to the description in Embodiment 1, which will not be repeated here.

[0052] b. Feed a stable gas-liquid two-phase annular flow into the porous permeation tube; open the electric control valve, and the automatic control system controls the commutator to make the liquid film flow into the waste liquid tank.

[0053] c. Close the electric control valve, set the initial gap between the electric telescopic tube and the expansion tube (the initial gap can be set to zero or 1mm), turn on the air pump to adjust the pressure difference between th...

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Abstract

The invention provides a novel gas-liquid two-phase annular flow liquid film mass flow measurement device and method. The liquid film mass flow measurement device comprises a liquid film taking and collecting mechanism, a liquid film detection mechanism, a mass flow measurement mechanism and an automatic control system. The liquid film taking and collecting mechanism can take out the liquid filmsunder multiple flow and flow rate conditions through the joint effect of a diffuser and a porous permeation tube; the automatic control system can perform PID regulation control on an air pump, an electric extension tube, an electric regulating valve, commutator and like devices at the same time by receiving and processing the data measured by the liquid film detection mechanism and the capacitiveliquidometer, thereby realizing precise taking and metering of the gas-liquid two-phase annular flow liquid film, and providing a new method and new thought for the measurement of the annular flow liquid film mass flow. Compared with the liquid film taking method in the prior art, the precise taking and metering of the liquid film under various flow rate and flow conditions can be realized.

Description

technical field [0001] The invention relates to the technical field of two-phase flow parameter detection, in particular to a novel gas-liquid two-phase annular flow liquid film mass flow measurement device and method under various flow conditions. Background technique [0002] Annular flow is one of the most typical flow patterns of gas-liquid two-phase flow, which widely exists in petrochemical, air-conditioning and refrigeration systems, and nuclear reactor cooling. Liquid film is an important carrier of annular mass transfer and heat transfer. The extraction and measurement of liquid film are important for the research on parameters such as annular flow liquid film mass flow rate, air core droplet entrainment rate, droplet deposition rate and industrial heat transfer tubes. It is of great significance to predict wall dryness and improve safety production. At present, the most widely used liquid membrane direct extraction methods are extraction method and porous media di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F7/00
CPCG01F7/005
Inventor 赵宁刘雨航郝晓倩方立德郭素娜
Owner HEBEI UNIVERSITY
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