常压储罐远传液位测量仪表设置探讨

Discussion on Level Instrumentation for Atmospheric Storage Tank

在石油化工行业,油品储运是炼油厂、油库等厂区的基础储备,也是油品贸易往来的分水岭。同时,近年来国家对油品储运的安全性要求也越来越高。液位是储罐需监控的最重要参数,不仅对储罐的正常运行至关重要,同时也是贸易交接、库容管理的基础数据,因此选用一套合适的测量方案尤其重要。阐述了在常压储罐上比较常用的液位测量方案和液位仪表的安装要求,及总线型液位仪表比较常用的接线方式,供广大工程设计人员、施工和维护人员参考。

In the petrochemical industry,oil tanks are the basic reserves of refineries and oil depots,and also the watershed of oil trade.At the same time,in recent years,the requirements for the safety of oil tanks have become higher and higher.The liquid level is the most important parameter to be monitored for the storage tank.It is not only very important for the normal operation of the storage tank,but also the basic data for trade handover and storage capacity management.Therefore,it is particularly important to select a set of appropriate measurement scheme.This paper briefly describes the commonly used liquid level measurement scheme of oil storage tank,and the installation requirements of liquid level instrument.At the same time,the common wiring mode of bus type liquid level instrument is given,which can be used as a reference for engineering designers,constructor and maintenance staff.