成品油携水携杂质及管内腐蚀监测系统的研发

Development of Monitoring System Carrying Impurity of Product Oil and Corrosion in Oil Pipeline

介绍了室内成品油携水携杂质模拟试验及管内腐蚀监测系统的研发和主要系统的功能及测试手段,并基于建成的管道系统对成品油管道内水、杂质沉积运移规律及内腐蚀特性开展了初步试验测试。管道系统主要包括沉积试验起伏管段、腐蚀监测系统、杂质沉降回收系统。主要测试手段包括观察法、超声波检测法和腐蚀监测法,试验中利用观察法结合超声波检测技术研究颗粒的沉积运移规律,利用交流阻抗腐蚀测试仪对管道杂质颗粒易沉积位置进行实时腐蚀监测。结果表明:水相容易在管道低洼处沉积,但杂质颗粒易在上倾-水平弯管段后方的水平管部位沉积,且已沉积的杂质颗粒容易捕捉流经的水相,造成此区域管内腐蚀。

This paper introduces the designation and establishment of the experimental system for oil-carrying-impurity detecting and corrosion in oil pipeline monitoring,and introduces the functions and testing measures of the system.Impurity movement and the deposition behavior in product oil pipeline are analyzed by the experimental system. The experimental system is mainly comprised of inclined section of the experimental pipeline,corrosion monitoring system and impurity deposition and recovery system. The major testing methods include observation method,ultrasonic detection method and corrosion monitoring method. Observation and ultrasonic detection methods are used to research impurity movement and deposition behavior. AC impedance corrosion tester is used to monitor the corrosion where impurity is deposited. According to the elementary experiment,water is easy to accumulate in some low spots of oil pipeline and impurity particles are easy to be deposited at the high point after the inclined section of the product oil pipeline. And the deposited impurity particles can capture water which leads to internal corrosion of the area in the product oil pipeline.