Remote optical methods for vibration monitoring of liquid pipelines.

Applied optics Pub Date : 2025-09-10 DOI:10.1364/AO.573317
V A Nurzai, A V Mostovshchikov, F A Gubarev
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Abstract

This paper discusses the application of the photomodulation method based on thin holographic films and the laser speckle correlation method for remote optical vibration monitoring of various parts of liquid pumping systems. The paper considers the microstructure of the surface relief of the holographic films used for the photomodulation method and the optical diffraction phenomenon of multi-component light on a refractive cross-grating. The results of monitoring the vibration of the pipeline, pillar, and pump housing of the water pumping system and the pipeline of the technical oil pumping system in various operation modes using the proposed methods are given. The results of experiments aimed at determining the resolution of the oscillation frequency for the photomodulation method are also presented. The achieved maximum difference in the readings of both methods for determining the first harmonic of oscillations was 0.103 Hz. The results obtained by the photomodulation method demonstrated high convergence with similar results obtained by the laser speckle correlation method. A conclusion is made about the possibility of applying the photomodulation method based on thin holographic films as a vibration visualization technique for technological equipment monitoring.

液体管道振动监测的远程光学方法。
本文讨论了基于全息薄膜的光调制方法和激光散斑相关方法在液体泵送系统各部件光学振动远程监测中的应用。本文研究了用于光调制方法的全息膜表面浮雕的微观结构和多组分光在折射率交叉光栅上的光学衍射现象。给出了应用该方法对抽水系统管路、矿柱、泵壳及技术抽油系统管路在各种运行模式下的振动监测结果。本文还介绍了光调制方法振荡频率分辨率的实验结果。测定振荡一谐波的两种方法的读数的最大差异为0.103 Hz。采用光调制方法得到的结果与激光散斑相关方法得到的结果相似,具有较高的收敛性。探讨了基于全息薄膜的光电调制技术作为一种振动可视化技术用于工艺设备监测的可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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