基于PLC的500W氦制冷机控制系统设计  

Design of 500 W helium refrigerator control system based on PLC

作　　者：杨丽娟[1] 周芷伟[1] 庄明[1] 张启勇[1] 胡良兵[1] 

机构地区：[1]中国科学院等离子体物理所,合肥230031

出　　处：《低温工程》2014年第1期55-61,共7页Cryogenics

基　　金：中国科学院知识创新工程青年人才领域专项前沿项目(Y05FCQ1124);中国科学院等离子体物理研究所应用开发项目(Y35ETY130G)资助

摘　　要：通过工艺流程分析,明确了500 W氦制冷机的控制流程及控制需求,设计实现了制冷机操作模式与过程参数调节控制回路。针对PLC控制系统的硬件和软件设计做了详细说明,并具体给出了500 W氦制冷机制冷模式自动控制的设计与实现。A 500 W helium refrigerator was designed by the institute of plasma physics of Chinese acad- emy of sciences, which was used to provide forced flow cooling of 4.5 K supercritical helium, and as helium liquifier. Its control system was designed and developed based on Programmable Logic Controller （PLC） platform to achieve automatic control of the helium refrigerator in each operation mode. Via the analysis of the process flow, each part of the control loops and control requirements was decided, and the refrigerator operation mode as well as its sequence control flow was also designed. The hardware and software design of the PLC control system were introduced. In the end, its design and implementation of automatic control in refrigeration mode were presented in detail.

关 键 词：氦制冷机 PLC控制系统 操作模式 控制回路 

分 类 号：TB651[一般工业技术—制冷工程]