高精度快速升降温恒温槽的设计与试验  

Design and experiment of high-precision rapid heating and cooling thermostatic bath

作　　者：魏明 袁东阁 张军 王兴鑫 张开兴[4] WEI Ming;YUAN Dongge;ZHANG Jun;WANG Xingxin;ZHANG Kaixing(Gansu Institute of Metrology,Lanzhou 730050,China;Weichai Lovol Intelligent Agricultural Technology Co.,Ltd.,Weifang 261000,China;Shandong Tai'an Panran Measurement and Calibration Technology Co.,Ltd.,Tai'an 271000,China;Shandong Agricultural University,Tai'an 271018,China)

机构地区：[1]甘肃省计量研究院,甘肃兰州730050 [2]潍柴雷沃智慧农业科技股份有限公司,山东潍坊261000 [3]山东泰安磐然测控科技有限公司,山东泰安271000 [4]山东农业大学,山东泰安271018

出　　处：《中国测试》2023年第8期128-133,共6页China Measurement & Test

基　　金：山东省科技型中小企业创新能力提升工程项目(2021TSGC1369,2022TSGC2441)。

摘　　要：针对目前用于检定热电阻等各类传感器的恒温设备存在控温精度低、控温速度慢、温场均匀性差等问题,该文设计一种高精度快速升降温恒温槽。该恒温槽创造性运用主槽与辅槽相结合的恒温槽三维机械结构,确定相关的结构和工艺参数;同时对恒温槽的软硬件系统进行优化,完成电源电路、数据采集、通讯模块和软件系统的设计;最后完成对成型恒温槽的快速升降温、温场稳定性和均匀性性能的测试试验。实验结果表明,该文设计的恒温槽升温和降温速率得到有效提升,温场最大波动性0.018℃/10 min,工作区域水平面最大温差为0.005℃,工作区域垂直方向最大温差为0.007℃,升降温速率、控温精度指标性能均优于传统的恒温槽。Aiming at the problems of low temperature control accuracy,slow temperature control speed,and poor temperature field uniformity in the current thermostat equipment used for calibrating various sensors such as thermal resistance,In this paper,a high-precision and fast temperature rise and fall thermostatic bath is designed.The thermostatic bath creatively uses the three-dimensional mechanical structure of the thermostatic bath combined with the main bath and the auxiliary bath,and determines the relevant structure and process parameters;secondly,the software and hardware system of the thermostatic bath are optimized,and the design of power circuit,data acquisition,communication module and software system is completed.Finally,the performance tests of rapid temperature rise and decrease,stability and uniformity of temperature field in the thermostatic bath were carried out.The experimental results show that the temperature rise and fall rate of the thermostatic bath designed in this paper is significantly improved.The maximum fluctuation of the temperature field is 0.018℃/10 min,the maximum temperature difference of the horizontal temperature field is 0.005℃,and the maximum temperature difference of the vertical temperature field is 0.007℃.The index performance is better than that of the traditional thermostatic bath.It has certain market promotion and use value.

关 键 词：恒温槽 温场 高精度 快速升降温 

分 类 号：TB9[一般工业技术—计量学]