管道内腐蚀监测系统的设计与实现

腐蚀监测技术是指测试设备正常运行时的内部腐蚀或破坏情况,以避免重大事故发生,延长设备寿命,使生产设备能更有效的运行。以通用微型计算机、调制解调器、可编程逻辑控制器(FX-2N)、信号变送器、腐蚀探针为硬件核心,以虚拟仪器编程环境LabVIEW为软件平台,开发设计了管道内腐蚀监测系统。该系统通过电阻(ER)腐蚀探针、线性极化电阻(LPR)腐蚀探针监测设备内部的电化学腐蚀程度、氢脆趋势,评价缓蚀剂效果。应用该系统对川西北矿区部分管道进行了腐蚀监测,现场监测结果表明,该系统能对管道内腐蚀情况进行高效、可靠的在线监测。

DESIGN AND IMPLEMENTATION OF INNER PIPELINE CORROSION MONITORING SYSTEM

Corrosion monitoring technology is used to test the inner corrosion or destruction of device, under the proper operation, to avoid the fatal accident, extend device’s life-span, make de-vice work effectively. The pipeline inner corrosion monitoring system was developed and designed as the hardware core of mi-crocomputer, modem, programmable logical controller, signaltransfer device, corrosion probe and as the software platform of the virtual instrument language LabVIEW. The system can be used to evaluate the effect of anti-corrosion by the electronic re-sistance corrosion probe and linear polarization corrosion probe in the light of the inner electrochemistry corrosion degree and hy-drogen brittle tendency. The system was used in the northwestof Sichuan diggings. The results show that the effective, reli-able online monitoring of the inner pipeline corrosion can be run by this system.