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Method for detecting the thickness of the upper layer of stratified solution

A liquid thickness and detection method technology, applied in the field of laser technology, can solve the problems of complex system and small measurement range

Active Publication Date: 2021-05-14
SICHUAN UNIV +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the measurement range is small or the system is complicated when measuring the thickness of the upper layer of two immiscible liquids, and provides a method for detecting the thickness of the upper layer of a layered solution

Method used

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  • Method for detecting the thickness of the upper layer of stratified solution
  • Method for detecting the thickness of the upper layer of stratified solution
  • Method for detecting the thickness of the upper layer of stratified solution

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[0149] This example is specifically:

[0150] The 1064nm laser of Nd:YAG laser is used as the excitation light source, the pulse width is 10ns, the energy is about 80mJ, the spectral sampling frequency is 1HZ, and the sampling delay is 290μs. Plasma is excited and generated at the focal length position on the surface of the sample solution from top to bottom. The AvaSpec-ULS2048CL-EVO optical fiber spectrometer (AVANTES company) is used for signal detection in the experiment. The optical fiber probe collects spectral signals on the outer wall of the beaker. to computer, recorded by Avasoft software. In order to avoid the rise of the liquid level when adding oil droplets with a pipette, resulting in changes in the depth of focus, each time the liquid level changes, it is necessary to use a three-dimensional mobile platform to adjust the height of the sample, and use an energy meter (coherent LabMax energy meter) to measure the laser energy. Monitor, and place a fused silica gl...

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Abstract

The present invention relates to laser technology. The purpose of the present invention is to solve the problem that the measurement range is small or the system is complicated when measuring the thickness of the upper liquid of two kinds of immiscible liquids at present, and to provide a method for detecting the thickness of the upper liquid of the layered solution. The technical scheme can be summarized as follows: The detection laser irradiates the layered solution to be detected, and obtains the current breakdown spectrum. The ratio of the characteristic peaks in the characteristic spectral lines is calculated to obtain the upper liquid thickness. The beneficial effect of the invention is that the range of measuring the thickness of the liquid on the upper layer of the layered solution can be greatly increased, and the method is suitable for measuring the thickness of the liquid on the upper layer of the layered solution.

Description

technical field [0001] The invention relates to the laser technology, in particular to the detection technology of the liquid thickness of the upper layer of the layered solution based on the laser plasma spectrometry. Background technique [0002] At present, in reality, there are many situations in which it is necessary to measure the thickness of the upper layer of two immiscible liquids. Typical examples are oil-water separation. Taking oil-water separation technology as an example, currently known oil-water separation methods include gravity separation, filtration The development of oil-water separation methods also promotes the rapid development of oil-water monitoring methods. The most important point in oil-water monitoring is to measure the thickness of oil layers. Currently, the difference in conductivity, Detection methods such as Raman spectroscopy, laser ultrasonic remote sensing, thermal infrared spectroscopy, differential laser triangulation, and optical fiber...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/06G01N21/71
CPCG01B11/0658G01N21/718
Inventor 韩敬华王瑞冯国英门金亮
Owner SICHUAN UNIV
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