TSXDSY64T2K
TSXDSY64T2K
TSXDSY64T2K
为提高生产的安全性,在本控制系统中对重要的工艺参数点采取了“3取2表决”的策略,并设计了21个自动连锁回路,对生产过程进行连锁保护;为保证生产过程的平稳运行和节能降耗,系统设计了6个调节回路。为便于监控和操作,在操作站设计了一幅流程画面总貌图,集中显示了与安全生产密切相关的一批工艺参数、设备运行状况态和报警信息;对其它化工单元操作过程设计了相关的局域流程画面,***地显示了与其相关的各种详细生产信息;根据操作人员的习惯,在操作站设计了4组组画面,分别集中显示温度、压力、流量和液位信号;对6个调节回路分别设计了调节画面,实现对PID参数的整定、手自动模式的切换以及对调节阀门的手动操作;对21个主要阀门分别设计了弹出式开关画面,实现对生产过程的自控或遥控;对主要工艺参数设计了历史趋势图,为故障诊断和优化控制提供了数据。为确保安全生产,实现对紧急事故的应急处理,对6个调节器回路加装外部自动跟踪调节器,一旦出现控制系统故障,自动切换到跟踪调节器***于DCS来控制调节阀;对21个主要阀门加装应急处理按钮,***于DCS实现对阀门的强制开关。
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