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Gas-liquid/vapor-liquid two-phase flow measurement system and measurement method

A technology of flow measurement and liquid flow, which is applied in the field of two-phase flow flow measurement, can solve the problems of inaccurate measurement of two-phase flow, inability to guarantee measurement accuracy, inability to measure instantaneous flow, etc., and achieves simple structure, no hysteresis effect, and guaranteed The effect of measurement accuracy

Active Publication Date: 2019-02-19
STATE NUCLEAR HUAQING BEIJING NUCLEAR POWER TECH R & D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the gas-liquid / vapor-liquid two-phase flow measurement devices and measurement methods in the prior art can only accurately measure the flow rate of small-flow gas-liquid / vapor-liquid two-phase flow or the flow rate of large-flow single-phase gas / gas and large-flow single-phase liquid. Flow, can not be suitable for accurately measuring the two-phase flow of each flow range, and the scope of application is narrow; the prior art gas-liquid / vapor-liquid two-phase flow measurement device and measurement method can not measure the instantaneous flow, there is a hysteresis effect; the prior art gas The liquid / vapor-liquid two-phase flow measurement device and measurement method can only handle the flow rate of gas-liquid / vapor-liquid ratio within a certain range and cannot guarantee the measurement accuracy

Method used

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Effect test

Embodiment 1

[0061] figure 1 It is a structural schematic diagram of a gas-liquid / vapour-liquid two-phase flow measurement system according to the first embodiment of the present invention.

[0062] Such as figure 1 As shown, the gas-liquid / vapor-liquid two-phase flow measurement system of the present invention mainly includes an inlet pipeline 2 for inputting gas-liquid / vapor-liquid two-phase fluid, and a gravity-type gas-liquid / vapor flow connected to the inlet pipeline 2. A liquid separator 3, and a gas / vapor flow measurement pipeline 4 and a liquid flow measurement pipeline 8 connected to the upper end and the lower end of the gravity type gas-liquid / vapor-liquid separator 3 respectively. The gas / vapor flow measuring pipeline 4 is three parallel pipelines, each of which is provided with a valve and a flow meter.

[0063] The gas-liquid / vapor-liquid two-phase fluid is introduced from the inlet pipe 2, and enters the gravity type gas-liquid / vapor-liquid separator 3 for gas-liquid / gas-l...

Embodiment 2

[0068] figure 2 It is a structural schematic diagram of a gas-liquid / vapour-liquid two-phase flow measurement system according to the second embodiment of the present invention.

[0069] Such as figure 2 As shown, the main difference between the gas-liquid / vapor-liquid two-phase flow measurement system according to the second embodiment of the present invention and the gas-liquid / vapor-liquid two-phase flow measurement system according to the first embodiment of the present invention is that: The gas-liquid / vapor-liquid two-phase flow measurement system of the second embodiment of the present invention is slightly modified, the structure is simplified, and the optional liquid repellent tank 6 and liquid level gauge 7 of the liquid repellent tank are removed. Replace the interlocking control valve 11 and flow meter 13 of the level meter of the lyophobic tank with ordinary valve 14 and flow meter 13 .

[0070] At the same time, according to specific flow requirements, the ga...

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Abstract

The invention relates to a flow measuring system and method for gas-liquid / vapor-liquid two-phase flow. The measuring system comprises an inlet pipeline, a gas-liquid / vapor-liquid separating device connected with the inlet pipeline, gas / vapor flow measuring pipelines connected with the upper end of the gas-liquid / vapor-liquid separating device, and a liquid flow measuring pipeline connected with the lower end of the gas-liquid / vapor-liquid separating device. A gas-liquid / vapor-liquid two-phase flow inlet of the gas-liquid / vapor-liquid separating device is higher than the initial liquid level in the gas-liquid / vapor-liquid separating device, and the liquid flow measuring pipeline comprises at least one liquid sealing section and is provided with a resistance adjustor used for adjusting resistance in the gas / vapor flow measuring pipelines according to the parameters of gas-liquid / vapor-liquid two-phase flow fluid in the inlet pipeline to maintain the resistance in the gas / vapor flow measuring pipelines to be smaller than that in the liquid flow measuring pipeline. By means of the measuring system and the measuring method, high-precision flow measurement can be ensured under the conditions of various levels of pressure, temperatures and flow sizes.

Description

technical field [0001] The invention relates to two-phase flow flow measurement technology. Specifically, the present invention relates to a gas-liquid / vapor-liquid two-phase flow measurement system and a gas-liquid / vapor-liquid two-phase flow measurement method for a passive core cooling system. Background technique [0002] Gas-liquid / vapor-liquid two-phase flow generally exists in the operation of passive core cooling systems. The flow rate of gas-liquid / vapor-liquid two-phase flow is one of the most important parameters in two-phase flow. The flow measurement of gas-liquid / vapor-liquid two-phase flow is the basic means to grasp the law of gas-liquid / vapor-liquid two-phase flow and is very important for The operation of the passive core cooling system has great significance and value. [0003] Due to the complex flow process of gas-liquid / vapor-liquid two-phase flow, compared with single-phase fluid measurement, it not only has a lot of content but also has many new fea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F7/00G01F15/08
Inventor 王含李玉全叶子申石洋
Owner STATE NUCLEAR HUAQING BEIJING NUCLEAR POWER TECH R & D CENT
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