高黏度液冷装置控制系统的设计  

Design of Control System for High Viscosity Medium Cooling Device

作　　者：饶建华[1] 程鹏[1] 徐许林 

机构地区：[1]中国地质大学(武汉)机械与电子信息学院,湖北武汉430074 [2]湖北九洲数控机床有限责任公司,湖北孝感432000

出　　处：《仪表技术与传感器》2016年第7期51-54,59,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金资助项目(41227001)

摘　　要：针对高温高压流变仪高温容器的特点,对已有液冷装置做了控制系统需求分析,研发了高黏度液冷装置控制系统,通过测量液冷装置的关键点温度来实现对蒸发器过热度与冷却液供液温度和回液温度的有效控制;为使液冷装置的蒸汽压缩式制冷循环工作在合理工况,采用增量式PID方式控制过热度;为使高温容器正常冷却,通过控制齿轮泵频率与压缩机频率对进液温度与回液温度进行有效控制,采用了双输入双输出模糊控制方式。运行结果表明:该控制系统解决了普通冷却装置造成流变仪高温容器冷却不稳、外围过热问题,并可用于其他采用高黏度液体冷却需求的工况。According to the characteristics of deformation apparatus,the demand analysis of the cooling device＇s control system was carried out. The control system for high viscosity medium cooling device was developed. The effective control to temperature of supply coolant was realized via acquiring temperature of key point of liquid cooling device. For making the steam compressor to work in suitable conditions,the incremental PID control was used to control superheat. In order to ensure that the high temperature vessel was cooling normally,the temperature of import and export was controlled effectively by change the frequency of gear pump and the compressor. Double input and double output fuzzy control method was adopted. As a result,the peripheral overheating caused by the cooling instability of ordinary cooling device was solved by the control system. And it can be used for the other conditions of high viscosity liquid cooling.

关 键 词：流变仪 高黏度介质 蒸汽压缩式制冷 模糊控制 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]