基于特种感温光缆的常温介质管道泄漏监测技术研究

Research on Leakage Monitoring Technology of Normal Temperature Medium Pipeline Based on Special Temperature Sensing Optical Cable

为解决常温介质埋地管道泄漏问题,文章介绍了一种基于自加热感温光缆的常道泄漏监测技术。通过人为加热方式,使管道泄漏点处与周围土壤产生温度差,然后采用分布式光纤测温设备解调技术来确定泄漏点位置,实现了常温液体输送管道工作状态的实时监测。经过为期一年多的工程应用,验证了这一监测方式的稳定性和准确性,具有报警及时、误报率低、定位精度高的特点,能够满足实际工程应用的需求。

In order to solve the leakage problem of buried pipeline with normal temperature medium, this paper introduces a normal channel leakage monitoring technology based on the self heating temperature sensing optical cable. By means of artificial heating, the temperature difference between the leakage point of pipeline and the surrounding soil is generated, and then the position of leakage point is determined by using the demodulation technology of distributed optical fiber temperature measuring equipment, which realizes the real-time monitoring of the working state of the normal temperature liquid transmission pipeline. After more than one year of engineering application, the stability and accuracy of this monitoring method have been verified, which has the characteristics of timely alarm, low false alarm rate and high positioning accuracy, and can meet the needs of practical engineering application.