管道防腐层电阻率计算方法及系统
By using a multi-frequency joint fitting and resistivity calculation framework, the problems of misjudgment and low efficiency in pipeline anti-corrosion layer detection in existing technologies are solved, achieving efficient and accurate anti-corrosion layer detection, providing quantifiable detection results, and supporting engineering decision-making.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG INST OF SPECIAL EQUIP INSPECTION
- Filing Date
- 2026-05-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for detecting pipeline corrosion coatings suffer from several drawbacks. Potential measurement is easily affected by factors such as soil resistivity, pipeline length, and coating defects, leading to misjudgments or omissions. Furthermore, these technologies are inefficient and costly, making it difficult to meet the demand for efficient and accurate detection. Additionally, they lack quantifiable and verifiable decision-making criteria.
By establishing a multi-frequency joint fitting and resistivity calculation framework, multi-frequency variable impedance data of pipeline anti-corrosion layer is obtained, signal-to-noise ratio is evaluated and Kramers-Kronig relationship is verified, relaxation time constant is identified, candidate equivalent circuit model is generated, and complex nonlinear least squares fitting is performed to extract the ohmic resistance term of anti-corrosion layer, calculate the true resistivity value of anti-corrosion layer, and provide quantifiable detection results.
It improves the efficiency and accuracy of pipeline inspection, reduces costs, and provides consistent and verifiable resistivity results for corrosion protection, supporting engineering decisions and subsequent verification, and reducing on-site manual operation time and costs.
Smart Images
Figure CN122153236B_ABST