摘要
铝制钎焊板翅式换热器是一种高效、紧凑式换热器;翅片是板翅式换热器的核心部件,其加工质量的下降,会直接导换热器阻力降的升高、传热效率下降,进而造成设备运行能耗的增大;因此,控制加工成型的翅片流阻在一定范围内,是有效保证翅片加工质量的关键;针对传统的基于风机的换热器阻力测试装置雷诺数上限低、试件拆装繁琐、测试效率低等缺点,开发了一套可实现板翅式换热器翅片流阻快速检测的装置;测试装置采用高压气体作为测试气源,有效提高了测试雷诺数上限,并配合液压驱动的试件固定装置,简化了拆装过程,有效提升了测试效率;通过开发基于C#及SQL Server数据库技术的上位机测控软件,实现了测试数据的实时采集、处理和曲线显示;测试实验结果显示,该检测装置系统重复性误差均可保证在3%以内,满足宽雷诺数、高精度的翅片阻力特性测量要求,为实现翅片加工质量检测提供保障。
Plate-fin heat exchanger is an efficient and compact heat exchanger,the fin is the key component of plate-fin heat exchanger,the degradation of processing quality will directly lead to the shortages of increasing flow resistance and decreasing in the heat transfer efficiency,and then leading to the higher energy consumption of equipment operation.Therefore,it is of significant to maintain the flow resistance within a predefined limit for an accepted manufacturing quality.Aiming at the inadequacies of low Renolds(Re)number,complicated assembly and low test efficiency for the conventional measurement devices,a testing device for realizing the rapid detection flow resistance is developed.Based on the high-pressure air as the test air source,the Re number for testing could be increased dramatically.In addition,using a hydraulic drive fixture,the disassembly and assembly process are simplified,the testing efficiency could also be improved.The upper computer test software is developed by the C#and SQL Server database,which realizes the real-time acquisition,processing and cure display of the test.The experimental results show that the repetition err of the system is controlled by 3%,which meets the requirements of wide Re number and high accuracy of flow resistance characteristics,which provides the guarantee for the quality in the fin processing.
作者
张国兴
钟晓龙
夏宇栋
王剑
章有虎
ZHANG Guoxing;ZHONG Xiaolong;XIA Yudong;WANG Jian;ZHANG Youhu(Hangzhou Zhongtai Cryogenic Technology Corporation,Hangzhou 311402,China;School of Automation,Hangzhou Dianzi University,Hangzhou 310018,China)
出处
《计算机测量与控制》
2022年第12期23-29,共7页
Computer Measurement &Control
基金
浙江省科技计划项目(LGG21F030009)
浙江省自然科学基金(LQ19E060007)
浙江省属高校基本科研业务费(GK209907299001-309)。
关键词
板翅式换热器
流阻特性
检测系统
加工质量
测控软件
plat-fin heat exchanger
flow resistance characteristics
measurement system
manufacturing quality
measurement and control software
