2025年04月09日 星期三 首页   |    期刊介绍   |    编 委 会   |    投稿指南   |    期刊订阅   |    统合信息   |    联系我们
计量学报  2022, Vol. 43 Issue (12): 1593-1597    DOI: 10.3969/j.issn.1000-1158.2022.12.11
  热学计量 本期目录 | 过刊浏览 | 高级检索 |
铠装热电偶动态响应校准过程数值研究
刘波1,郑伟1,王志远2,李雪菁1
1. 上海市计量测试技术研究院,上海 201203
2.上海理工大学能源与动力工程学院,上海 200093
Numerical Simulation for the Dynamic Response Calibration of the Sheathed Thermocouple
LIU Bo1,ZHENG Wei1,WANG Zhi-yuan2,LI Xue-jing1
1. Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China
2. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
全文: PDF (1954 KB)   HTML (1 KB) 
输出: BibTeX | EndNote (RIS)      
摘要 时间常数是描述温度传感器动态响应特性的重要参数。由于实验室校准条件通常难以覆盖温度传感器的实际使用条件,因此基于有限体积法数值仿真研究了插入法和回路电流阶跃响应(loop current step response,LCSR)法校准铠装热电偶动态响应的过程。建立了热电偶保护管、绝缘层、感温层的三维模型,分析了绝缘层MgO不同填充密实度下热电偶的动态响应。结果发现,采用3个极点的方程对LCSR响应数据进行拟合、变换求得的时间常数与插入法获得的时间常数偏差小于10%,为快响应铠装热电偶动态特性的设计、校准提供了一种新方法。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
刘波
郑伟
王志远
李雪菁
关键词 计量学热电偶时间常数动态响应校准数值仿真    
Abstract:Time constant is one of the important parameters for temperature sensor`s dynamic response. Because the calibration conditions usually can`t cover the temperature sensors service conditions, the dynamic responses of a sheathed thermocouple under plunge test and loop current step response (LCSR) test were numerically simulated by the finite volume method. Three-dimensional structure models of the thermocouple with protective tube, insulating layer and sensing layer were established. The dynamic responses of the thermocouple with different MgO ratio in the insulating layer were analyzed. The results show that the time constants obtained by fitted and transformed LCSR data with the equation of three poles agree well with the time constants obtained by the plunge test, and the deviations are less than 10%. These provide a new method for the design and calibration of the fast response sheathed thermocouples.
Key wordsmetrology    thermocouple    time constant    dynamic response calibration    numerical simulation
收稿日期: 2021-08-18      发布日期: 2022-12-28
PACS:  TB942  
基金资助:上海市市场监督管理局科技项目(2019-20)
作者简介: 刘波(1988-),男,山东平邑人,上海市计量测试技术研究院工程师,博士,主要从事温度计量研究。E-mail: liubo021@126.com
引用本文:   
刘波,郑伟,王志远,李雪菁. 铠装热电偶动态响应校准过程数值研究[J]. 计量学报, 2022, 43(12): 1593-1597.
LIU Bo,ZHENG Wei,WANG Zhi-yuan,LI Xue-jing. Numerical Simulation for the Dynamic Response Calibration of the Sheathed Thermocouple. Acta Metrologica Sinica, 2022, 43(12): 1593-1597.
链接本文:  
http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2022.12.11     或     http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2022/V43/I12/1593
京ICP备:14006989号-1
版权所有 © 《计量学报》编辑部
地址:北三环东路18号(北京1413信箱)  邮编:100029 电话:(010)64271480
本系统由北京玛格泰克科技发展有限公司设计开发  技术支持:support@magtech.com.cn