摘要
介绍了膨胀压缩机工作原理以及保证其安全可靠工作的重要性,设计开发其冗余型安全控制系统,详细阐述了安全控制系统的硬件组成和软件编程。控制系统采用本特利3500设备保护系统,实现机组振动、温度、转速监测,并按控制程序输出报警和关断信号,采用Moore353控制器实现压缩机喘振控制,通过RS485接口以Modbus协议与DCS系统建立通讯,实现系统的上位监控。经投运证明,该控制系统工作可靠、控制准确,保证了膨胀压缩机组的安全可靠工作。
Described the operating principle of expander-compressor unit,and the importance of keeping the unit working safely and stably. Designed its safety control system,the hardware composition and software programming were described in detail. The control system uses Bently Nevada 3500 as machinery protection system to monitor vibration,temperature and speed of the expander-compressor unit,output alarms and shutdown signals according to the control program. Uses Moore353 controller to achieve surge control,and communicates with the DCS through RS485 interface by Modbus protocol to achieve upper supervision. The system operation proves that the control system works reliably and controls accurately,made the expander-compressor unit work safely and stably.
出处
《自动化与仪表》
北大核心
2014年第9期41-44,共4页
Automation & Instrumentation
关键词
膨胀压缩机组
本特利3500
振动监测
喘振控制
在线监控
expander-compressor unit
Bently Nevada 3500
vibration monitoring
surge control
upper supervision
