一种用于圆管内液膜厚度瞬时测量系统及标定方法
By setting an electrode probe on the inner wall of a circular tube, the liquid voltage signal is acquired in real time and converted into liquid film thickness, which solves the problems of complexity and low efficiency in existing liquid film thickness measurement and realizes efficient and low-cost liquid film thickness measurement.
CN115752209BActive Publication Date: 2026-07-17CHONGQING UNIV +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHONGQING UNIV
- Filing Date
- 2022-10-26
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing methods for measuring liquid film thickness are complex, inefficient, and costly. Optical and X-ray measurement methods are expensive and have radiation issues, while electrical measurement methods involve invasive measurements that affect the accuracy of the flow field.
Method used
An electrode probe is placed on the inner wall of a circular tube to collect liquid voltage signals in real time and convert them into liquid film thickness. Combined with a signal acquisition and processing module, non-invasive measurement is achieved.
Benefits of technology
It reduces operational complexity and cost, improves measurement efficiency and accuracy, and enables real-time measurement of thin liquid film thickness.
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Figure CN115752209B_ABST
Abstract
本发明公开一种用于圆管内液膜厚度瞬时测量系统及标定方法，包括电极探头、信号采集模块和处理模块，电极探头的输出端与信号采集模块的输入端连接，信号采集模块的输出端与处理模块的输入端连接；电极探头，用于检测圆管内的电压信号；信号采集模块，用于将电极探头的电压信号转化为直流电压信号并传输到处理模块；处理模块，用于根据直流电压信号计算液膜厚度。本发明电极探头嵌入实验段内壁面并保持与内壁面平齐，圆柱塞与平行电极探头形成的间隙即为固定的液膜厚度，以此来确定液膜厚度值，与此同时在该液膜厚度下采集相应的电压信号，进而得出电压信号与液膜厚度的对应关系，实现对电极探头的标定。
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