中国电力 ›› 2016, Vol. 49 ›› Issue (10): 12-16.DOI: 10.11930/j.issn.1004-9649.2016.10.012.05

• 发电 • 上一篇    下一篇

K型热电偶动态特性试验与建模分析

高爱民1,殳建军1,于国强1,张卫庆1,徐华冠2,薛锐2   

  1. 1. 江苏方天电力技术有限公司,江苏 南京 211102;
    2. 南京工程学院 能源与动力工程学院,江苏 南京 211167
  • 收稿日期:2016-03-12 出版日期:2016-10-10 发布日期:2016-11-07
  • 作者简介:高爱民(1969—),男,上海人,高级工程师,主要从事火力发电厂热工测量及控制等相关技术研究。E-mail: xuerui@njit.edu.cn
  • 基金资助:
    江苏方天电力技术有限公司科技项目(KJXM-0074)

Experimental Study and Numerical Simulation of K Type Thermocouple Dynamic Characteristics

GAO Ai’min1, SHU Jianjun1, YU Guoqiang1, ZHANG Weiqing1, XU Huaguan2, XUE Rui2   

  1. 1. Jiangsu Fangtian Electric Technology Co., Ltd., Nanjing 211102, China;
    2. School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
  • Received:2016-03-12 Online:2016-10-10 Published:2016-11-07
  • Supported by:
    This work is supported by the Technical Project of Jiangsu Fangtian Electric Technology Co. Ltd. (No. KJXM-0074).

摘要: 以K型热电偶为研究对象,采用温度采集模块、检验仪设计了动态试验系统,通过Visial Basic和Utility软件实现了试验数据的自动采集,完成了K型热电偶的动态特性试验;在此基础上,讨论评估了不同偶丝直径、不同插入深度以及不同被测温度下K型热电偶的最大温升速率,同时使用Matlab对试验数据进行了可视化研究,得出了该类型热电偶的数学模型,为该类型热电偶在火电厂安装、检修时提供必要的理论依据与实践指导。

关键词: 火力发电厂, K型热电偶, 动态特性, 数学建模

Abstract: In this paper, the K type thermocouple is taken as the study object. A dynamic experimental system is designed and assembled using the temperature acquisition module and the calibration tester. With the system, the experiment on the dynamic characteristics of the thermocouple is conducted with the experimental data automatically acquired by Visual Basic and Utility software and visualised using Matlab. Based on the experiment, the maximum temperature increasing rates at different wire diameters, insertion depth and testing temperatures are evaluated. Meanwhile, the mathematic model of the thermocouple is set up with the visualization study of the experimental data by Matlab. The study results provide theoretical basis and application guidelines for the installation and maintenance of the thermocouple in thermal power plants.

Key words: thermal power plant, K type thermocouple, dynamic characteristic, numerical simulation

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