计量学报2026，Vol.47Issue(5)：679-685,7.DOI:10.3969/j.issn.1000-1158.2026.05.06
基于小型脉冲管制冷机的计量用低温恒温器设计与性能研究
Design and Performance Study of a Metrological Cryostat Based on a Small Pulse Tube Refrigerator
摘要
Abstract
When metrology laboratories employ the comparative method in cryogenic calibration systems,the thermostat frequently utilizes cryogenic fluid as the cold source.This kind of thermostat has the defects of large consumption of cryogenic fluid,short durations of single constant temperature maintenance and inconvenience for use in non-fixed places.These factors result in high operating costs and fail to meet the needs of rapid and continuous calibration of thermometers in industrial production.To address these issues,this study introduces a system that uses a small pulse tube refrigerator as the cold source and establishes a heat transfer and control model to achieve rapid evaluation of PID parameters.The system's well thermostatic structure is used to optimize the adiabatic performance of the system.The system achieves continuous temperature control in a wide temperature range of 90～290 K.The temperature fluctuation of the system is less than±0.030 K/30 min and the axial temperature uniformity is better than 0.010 K,fulfilling the traceability requirements of conventional industrial-grade cryogenic temperature sensors below 200 K.关键词
温度计量/低温恒温器/脉冲管制冷机/阱式恒温结构/温度波动度/温度均匀度Key words
temperature measurement/cryostat/pulse tube refrigerator/well thermostatic structure/temperature fluctuation/temperature uniformity分类
通用工业技术引用本文复制引用
承磊,赵文韬,蒋欣蓓,黄永华..基于小型脉冲管制冷机的计量用低温恒温器设计与性能研究[J].计量学报,2026,47(5):679-685,7.基金项目
国家重点研发计划(2022YFE0210200) （2022YFE0210200）
上海交通大学深蓝计划项目(SL2023ZD101) （SL2023ZD101）
