雷达液位计在黄岛地下油库罐位监测中的应用

Application of radar level gauge in the monitoring of Huangdao underground oil tank

在黄岛地下油库改造工程中,分别在1号和3号地下储罐安装了雷达液位计监测系统,该系统可通过天线发出到达介质液面的发射波,检测出其与反射波之间的频率变化,与被测液面距离成正比关系,能够准确地计算出罐存介质的液位,并可同时将液位、温度及裂隙水位等重要数据传至地面控制中心进行监测,减轻了工人的劳动强度,提高了安全生产的保障系数。该系统具有精确度高、传输速度快、防爆性能好及维修方便等特点。介绍了系统的结构原理与技术特性。

In the transforming engineering of Huangdao underground oil storage, radar level gauge monitoring systems are installed on 1# and 3# underground oil tanks individually. The system can send an emission wave f0 through antenna while reaching medium level, detect frequency change Af between emission wave fo and f1, and the relationship in proportion to detected level distance d (d = Δf×41. 7 Hz/m) , so as to calculate the level of the medium inside tank accurately and send such major data as level, temperature and seepage level up to ground control center for monitoring. It will reduce labor intensity and raise support factors of safety operation. The system has the characteristics of high accuracy, quick transfer speed, good explosion-proof property and convenient repair, etc. The article introduces the structure principle of the system and technical characteristics.