脱盐水站的自动控制

Automatic Control on Desultwater Station

大庆油田化学助剂厂动力车间脱盐水站是大庆地区最大的化工用水处理站，处理量为500t／h。该站装有17台过滤罐，24台阴阳离子交换床，2个清水罐，2个脱盐水罐，2套再生酸液配制装置，2套再生碱液配制装置。全部自控设备共有过程检测量和过程控制量500多个。根据脱盐水站的运行特点及控制要求，其自动控制系统采用了集散控制系统。用2台IPC－610型工业控制机作为上位机，管理控制整个脱盐水站；12台OMRONC200H可编程控制器（PLC）为过程控制器，直接控制离子交换床。上位机与PLC用RS－422通讯线构成工业控制网。由工业PC＋PLC组成的自动控制系统，结构简单，操作方便。

Desultwater staiton of power works in the Daqing oilfield chemical auxiliary agent plant is the largest chemical industry water treating station, treating amount 500 t/h, There are 17 filter tanks, 24 anion-cation exchanging beds, 2cleanwater tanks,2 desultwater tanks etc installed in the plant. There are more than 500 process detecting and control measuring points. Its control system uses the collecting-distributing control. Using 3 IPC-610industry controllors as the upper controller,They are control the whole desultwater station, using 12 OMRON C200H programable controllers (PLC) as the process controller, They are dirctly control ion exchanging bed. The upper controller and PLC using RS-422 communication line composes industrial control networks.