智能置换式恒温槽测量系统的应用研究

Research on the Application of the Intelligent Replacement Type Thermostatic Bath Measurement System

针对热量表检定过程中多点采集高温端温度值及温度循环控制采集的特点,研制了智能置换式恒温水槽及测温的应用系统。通过设置一组水箱以及电控组件,保证高温水恒温槽中水的温度点的快速切换,满足快速检定热量表的要求。给出了智能置换式恒温槽设计原理和方法及控制系统的实际作业指导,该系统利用自制的数控技术,以基准槽为测量主体,辅助槽预制恒温介质,中转槽搭建了置换平台。实验结果表明:该设备及测量系统满足JJG 225—2001《热能表》及其修订版、GB/32224—2015《热量表》、JJF 1030—2010《恒温槽技术性能测试规范》和JJF(蒙)033—2018《置换式恒温槽校准规范》的要求,可以实现热量表检定过程中温度快速测量,提高检定效率约1倍。

According to temperature value of the high temperature end of heat meter and the characteristics of temperature cycle control in the verification process,an intelligent replacement thermostatic tank and application system for temperature measurement were developed.By setting up a group of water tanks and electronic control components,rapid switching of water temperature points was ensured in high temperature water constant temperature tank to meet the requirements of rapid verification of heat meters.The practical principle and method of the intelligent replacement type constant temperature tank and the practical operation guidance of control system were given.The system used the self-made numerical control technology,takes the reference slot as the main measuring body,assisted the tank to prefabricate the constant temperature medium,and build the replacement platform for the intermediate slot.The experimental results showed that the equipment meet the requirements of JJF 225—2001《Heat Meter》,GB/32224—2015《Heat Meter》,JJF 1030—2010《Measurement and Test Norm of Thermostatic Bath′Metrological Characteristic》and JJF(Mongolia)033—2018《Replacement Type Thermostatic Bath Calibration Specification》.The rapid measurement of the temperature can be realized in the heat meter verification process by this method,and the verification efficiency was also improved about one time.