论文部分内容阅读
针对长期以来埋地管道交流腐蚀评价只能依赖现场测取的交直流参数且准确性欠佳的问题,提出了一种埋地管道交流干扰腐蚀的实验室评价方法。通过现场测取实际管道的交流干扰信号,在实验室使用取自管道沿线的土样进行大范围交流腐蚀模拟实验,评价埋地管道在现场交流干扰条件下的真实腐蚀风险。研究结果表明:采用对称电路和数字信号处理技术,可以实现在实验室内精确模拟实际管道在交流腐蚀和阴极保护条件下的腐蚀速率;通过覆盖现场测量数据的交流干扰腐蚀失重实验,可以最大程度地在实验室内实现埋地管道交流干扰的腐蚀风险评价与表征。
Aiming at the problem that AC corrosion evaluation of buried pipelines can only rely on AC and DC parameters measured on site and its accuracy is not good, a laboratory evaluation method of AC interference corrosion of buried pipelines is proposed. Through the on-site measurement of the actual pipeline AC interference signal, a large-scale AC corrosion simulation experiment was conducted in the laboratory using soil samples taken along the pipeline to evaluate the real corrosion risk of the buried pipeline under the condition of AC interference in the field. The results show that the symmetrical circuit and digital signal processing technology can accurately simulate the corrosion rate of the actual pipeline under AC corrosion and cathodic protection conditions in the laboratory. By the AC interference corrosion weight loss experiment covering the field measurement data, Corrosion Risk Assessment and Characterization of Underground Pipeline Interference in Laboratory.