作者：魏明¹, 袁东阁², 张军³, 王兴鑫⁴, 张开兴⁴

作者单位：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

关键词：恒温槽;温场;高精度;快速升降温

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。

Design and experiment of high-precision rapid heating and cooling thermostatic bath
WEI Ming¹, YUAN Dongge², ZHANG Jun³, WANG Xingxin⁴, ZHANG Kaixing⁴
1. Gansu Institute of Metrology, Lanzhou 730050, China;
2. Weichai Lovol Intelligent Agricultural Technology Co., Ltd., Weifang 261000, China;
3. Shandong Tai'an Panran Measurement and Calibration Technology Co., Ltd., Tai'an 271000, China;
4. Shandong Agricultural University, Tai'an 271018, China
Abstract: 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.
Keywords: thermostatic bath;temperature field;high-precision;rapid heating and cooling
2023, 49(8):128-133  收稿日期: 2023-01-05;收到修改稿日期: 2023-05-02
基金项目: 山东省科技型中小企业创新能力提升工程项目（2021TSGC1369，2022TSGC2441）
作者简介: 魏明(1982-),男,甘肃武威市人,高级工程师,主要从事温度计量研究工作
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