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A water-gas two-phase stratified flow flow field synchronous measurement system and measurement method

A measurement system and phase stratification technology, applied in the direction of fluid velocity measurement, measurement device, velocity/acceleration/impact measurement, etc., can solve the problems of increasing measurement cost, reducing measurement accuracy, disturbing flow field, etc. The effect of simplifying the operation process and simplifying the structure

Active Publication Date: 2019-01-25
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) The "point" flow velocity measurement method is adopted, and the flow field contains countless measuring points. In order to obtain more flow field information, at least two measuring probes are required for constant flow, and multiple sensors are required for non-steady flow Probes, complex instrument layout
Even so, it is difficult to obtain complete flow field information
In addition, multiple probes not only increase the cost of measurement, but also interfere with the flow field, greatly reducing the measurement accuracy

Method used

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  • A water-gas two-phase stratified flow flow field synchronous measurement system and measurement method
  • A water-gas two-phase stratified flow flow field synchronous measurement system and measurement method
  • A water-gas two-phase stratified flow flow field synchronous measurement system and measurement method

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Embodiment 1

[0049] The water-gas two-phase stratified flow field synchronous measurement system described in this embodiment has a structure such as figure 1 As shown, it is composed of a water-air circulation device for forming a stable water-air two-phase stratified flow, a continuous laser light source assembly for forming a sheet-shaped beam, a high-speed camera 13 and a computer 12;

[0050] The water-air circulation device includes a water flow rectifier 1, a measuring tank 2, a bracket 8 for supporting the measuring tank, a screw elevator 6 for adjusting the inclination of the measuring tank, an airflow tracer release box 3, a sump 9, and a circulating pump 18. The first connecting pipe 5, the second connecting pipe 10, the third connecting pipe 11, the control valve 17 and the water flow meter 20; the measuring tank 2 is a bar-shaped groove made of plexiglass, such as Figure 2 to Figure 5 As shown, it is composed of the front side wall 2-1, the rear side wall 2-2, the bottom wall...

Embodiment 2

[0056] In this embodiment, the water-gas two-phase stratified flow flow field synchronous measurement system described in Example 1 is used for synchronous measurement of the water-gas two-phase stratified flow flow field, and the steps are as follows:

[0057] (1) Inject water to the required amount of water in the sump 9, then open the control valve 17 and the circulation pump 18, so that the water flow circulates through the water flow rectifier 1, the measuring tank 2, and the sump 9 to form a stable water-gas two-phase stratification Flow; the flow rate of the water flow is 40L / s, and the flow rate of the water flow is 2m / s;

[0058] (2) Add water flow tracer particles 33 to the sump, and turn on the agitator 19 to spread the water flow tracer particles evenly, and simultaneously place the solid carbon dioxide forming the airflow tracer 22 in the airflow tracer release box 3;

[0059] (3) Determine the measuring section 4 in the measuring groove, then turn on the laser 14...

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Abstract

The invention discloses a water-air two-phase stratified flow field synchronization measurement system. The system is composed of an air-water circulation apparatus, a continuous laser source assembly, a high-speed camera and a computer. The air-water circulation apparatus comprises a water flow rectifier, a measurement groove, a support for supporting the measurement groove, a screw elevator for adjusting the inclination of the measurement groove, an air flow tracer release box, a collecting basin, a circulating pump, a first connecting pipe, a second connecting pipe, a third connecting pipe and a control valve. The continuous laser source assembly is composed of a laser, a cylindrical lens and a reflector, a light beam emitted by the laser, after being reflected by the cylindrical lens, becomes a sheet-shaped light beam, and the sheet-shaped light beam, after being reflected by the reflector, is vertically projected to a center line of the bottom wall of the measurement groove; and the high-speed camera is connected with the computer through a data line. The invention also provides a water-air two-phase stratified flow field synchronization measurement method based on the measurement system. According to the invention, the structure of the measurement system can be simplified, the measurement precision is improved, and flow field information can be obtained conveniently and rapidly as much as possible.

Description

technical field [0001] The invention belongs to the technical field of flow field measurement of water-gas two-phase stratified flow, and in particular relates to a synchronous measurement device and method for flow field of water-gas two-phase stratified flow. Background technique [0002] Water-gas two-phase stratified flow refers to the flow of gas and liquid two phases that are immiscible or have a mixture of phase interface substances. Momentum transfer exists between the water and gas phases, which is mainly manifested as the flow of the other phase caused by the flow of one phase, and they influence each other. There is a coupling effect in the motion and dynamic parameters near the interface of the two phases of water and gas. The simultaneous measurement of the water-air two-phase flow field is the basis for studying the velocity coupling characteristics, momentum transfer mechanism and water surface deformation instability of the water-air two-phase stratified flow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/22
CPCG01P5/22
Inventor 张法星邓军许唯临刘善均王韦张建民田忠
Owner SICHUAN UNIV