摘要
为满足测控专业微流量计量教学需求,设计了一种基于压力位差式层流流量计的微型散热风扇气动性能测试实验平台。微流量测量单元选用层流流量计原理,提出压力位差式层流流量传感技术,采用层流组件交叉对称的双流道结构,抵消了毛细管进出口局部损失和层流起始段非线性压力损失,大大提高了测量精度。系统选用微型散热风扇为被测对象,参照ANSI/AMCA 210-07标准,采用LabVIEW进行上位机程序编写,测量了微型散热风扇出风量与出口静压之间的关系,绘制了P-Q曲线,实现了对微型散热风扇气动性能的测试。实验结果表明,该平台运营成本低、计量性能优异,教学效果良好。
In order to meet the experimental teaching needs of micro-flow measurement, a set of experimental platform for the aerodynamic performance test of micro-cooling fan based on differential laminar flow meter is designed. The laminar flowmeter is selected to measure the microflow, proposing the pressure potential differential(PPD) type laminar flow sensing technique. The double channel structure with cross symmetry of laminar flow components is adopted to offset the local loss at the inlet and outlet of capillary tube and the nonlinear pressure loss at the beginning of laminar flow, which greatly improves the measurement accuracy. Micro-cooling fan is selected as the tested object, referring to the ANSI/AMCA 210-07 standard, and Lab VIEW is used as programming language. The relationship between the flow rate and the outlet static pressure of micro fan is measured by drawing P-Q curve to realize the test of the aerodynamic performance of the micro cooling fan. This system has been used in practice teaching and has achieved good teaching results.
作者
赵鹏
陈红
黄浩钦
张洪军
沈超
ZHAO Peng;CHEN Hong;HUANG Haoqin;ZHANG Hongjun;SHEN Chao(College of metrology&measurement engineering,China Jiliang University,Hangzhou 310018,China;Goldcard Smart Group Co.,Ltd.,Hangzhou 310018,China)
出处
《实验技术与管理》
CAS
北大核心
2021年第4期110-115,共6页
Experimental Technology and Management
基金
浙江省高校实验室工作研究项目(YB201966)
浙江省教育厅科研资助项目(Y201839999)
浙江省“十三五”第一批高等教育教学改革项目(jg20180133)
中国计量大学教改项目(HEX2018005)。
