皮革收缩温度测定中加热介质的温度场时空分布规律研究  

Study on the Space-time Distribution of Temperature Field of Heating Medium in Leather Shrinkage Temperature Measurement

作　　者：刘嫣[1] 刘正浪 宁铎[1] LIU Yan;LIU Zhenglang;NING Duo(College of Electrical and Control Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China)

机构地区：[1]陕西科技大学电气与控制工程学院,陕西西安710021

出　　处：《皮革科学与工程》2023年第5期27-32,共6页Leather Science and Engineering

基　　金：陕西省自然科学基础研究计划项目(2022JM-408)。

摘　　要：针对皮革收缩温度测定仪易出现的加热介质温度不均匀现象,开展了关于温度场时空分布特点及规律的试验研究。首先设计了基于皮革收缩温度测定仪MSW-YD4的温度场时空分布测试试验方案,并给出了PT100温度传感器的分布方式;而后分别开展了同种加热介质在水平和垂直方向上、不同加热介质在搅拌与否状态下和复合控制方式下的温度测定试验;最后给出了不同条件下的温度场时空分布规律。试验结果表明:加热介质水平温度场分布均匀且误差较小,垂直方向上温度误差较大,但随升温过程的进行误差逐渐减小;增加搅拌能够加快介质之间的流动性,使温度分布更加均匀;采用复合控制方式能够有效降低加热介质在升温过程中温度的波动幅度。该规律可为皮革收缩温度测定仪的改进和优化提供有效依据,进而提高皮革收缩温度的测量精度。In order to solve the problem of temperature inhomogeneity of heating medium in leather shrinkage temperature measuring instrument,the characteristics and laws of temperature field were studied.Firstly,the test scheme of temperature field distribution was designed based on MSW-YD4,and the distribution mode of PT100 temperature sensor was given.Then,the temperature tests were carried out in the same heating medium in the horizontal and vertical directions,and in different heating media in the state of mixing or not and under the composite control.Finally,the space-time distribution of temperature field was given under different conditions.The experimental results show that the horizontal temperature field of heating medium was uniform and the error was small,while the vertical temperature error was large,but the error decreased gradually with the heating process.The increase of agitation could accelerate the flow and make the temperature distribution more uniform,and the compound control method can effectively reduce the temperature fluctuation of heating medium during the heating process.This rule can provide an effective basis for the improvement and optimization of the leather shrinkage temperature measuring instrument,and then improve the measuring accuracy of leather shrinkage temperature.

关 键 词：皮革 收缩温度 加热介质 温度场 时空分布规律 

分 类 号：TS57[轻工技术与工程—皮革化学与工程]