摘要
为了提高中国石化塘燕复线泄漏检测系统的精确度,通过分析定位误差产生的原因,发现检测距离和数据读取频率对系统的精准度有显著影响,进而提出通过缩短检测距离、建立独立数据通道、提高检测频率来提升检测系统的定位精度。结合负压波的传播规律和SCADA系统固有频率,选择在塘燕复线陈台子阀室增加一个检测点以缩短检测距离,有效减小负压波的衰减强度,将检测到的负压波强度提高了50%;通过建立独立的数据通道,将泄漏检测系统的检测频率从1 Hz提高至20 Hz,从而将旧系统的定位误差从3.61 km降至0.79 km,大大提高了系统的定位精度,为塘燕复线安全、平稳、高效运行提供了保障。
In order to enhance the precision of leakage detection system for SINOPEC Tanggu-Yanshan Parallel Oil Pipeline, the causes of positioning error are analyzed, indicating that the detection distance and data reading frequency have significant impacts on precision of the system. Thereby, it is propose to improve the positioning accuracy by shortening the detection distance, establishing independent data channels and increasing the detection frequency. Combing the propagation law of negative pressure wave and the inherent frequency of SCADA system, one detection point is added in Chentaizi Valve Chamber along the Tanggu-Yanshan Parallel Oil Pipeline, in order to shorten the detection distance, which has helped to effectively reduce the attenuation intensity of negative pressure wave and increase the detected negative pressure wave intensity by 50%. Through establishing independent data channels, the frequency of leakage detection system is improved from 1 Hz to 20 Hz, thus, the positioning error is reduced from 3.61 km to 0.79 km, so that the positioning precision of the system is significantly improved. This method provides guarantee for the safe, smooth and efficient operation for SINOPEC Tanggu-Yanshan Parallel Oil Pipeline.
出处
《油气储运》
CAS
北大核心
2015年第7期791-794,共4页
Oil & Gas Storage and Transportation
关键词
输油管道
泄漏监控
精确度
负压波
oil pipeline
leakage monitoring
accuracy
negative pressure wave
