气液两相流周向非均匀液膜厚度电导测量系统及标定方法
By designing an interdigitated electrode conductivity sensor to optimize liquid film measurement and combining it with image calibration, the error problem caused by circumferential non-uniformity in liquid film thickness measurement in gas-liquid two-phase flow was solved, achieving high-precision and high-resolution liquid film thickness measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN UNIV
- Filing Date
- 2023-01-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for measuring the thickness of liquid film in gas-liquid two-phase flow suffer from uneven circumferential distribution of the liquid film, especially in inclined pipes, due to strong turbulent energy and the influence of gravity. This results in large errors in traditional measurement methods, and the local measurement method based on conductivity cannot effectively reduce the errors.
An interdigitated electrode conductivity sensor is adopted. By optimizing the geometric parameters of the interdigitated electrodes, full-space interdigitated electrode excitation and reception are formed, reducing the influence of the non-uniform distribution of the liquid film in the circumference on the measurement. The liquid film thickness measurement model is established by combining the image method for calibration.
It achieves high-precision, wide-range measurement of liquid film thickness in gas-liquid two-phase flow, reduces measurement errors caused by circumferential non-uniform distribution of the liquid film, improves measurement resolution and robustness, and ensures the accuracy of measurement results.
Smart Images
Figure CN115930766B_ABST