流体微/纳流量测量方法的研究  

Research on test methods of liquid's micro/nano flowrate

作　　者：张聪[1,2] 杨三东[2,3] 李乃杰 唐涛[2,3] 孙云社 张维冰[1,4] 李彤 

机构地区：[1]齐齐哈尔大学,齐齐哈尔161006 [2]大连依利特分析仪器有限公司,大连116023 [3]南京理工大学,南京210094 [4]华东理工大学,上海200237

出　　处：《分析仪器》2014年第5期7-12,共6页Analytical Instrumentation

基　　金：国家重大科学仪器设备开发专项项目(2012YQ12004403;2012YQ12004405);国家质检公益性行业科研专项项目(201310286)

摘　　要：微纳流量的测量是微纳液相色谱仪研发工作中的关键环节之一,本文利用热分布原理,建立了一种可以实时测量流量的微流量计法。由分流模式获得微纳流量流体,再采用传统测量方法得到实际输出流量,用以校正微流量计测量法的准确性。结果表明:微流量计法测得的数据准确且稳定性好,能够真实反映瞬时流量的变化,可测量μL/min^nL/min范围。该方法的建立,为微纳输液泵研制提供了有效的测试手段。Testing for micro-nano flow rate is one of important works in theμ-HPLC＇s development.A new micro-flow rate meter testing method was proposed and evaluated.Its principle was to acquire liquid＇s instant flow rate by monitoring the temperature change of the fluid.The flow rate was splited by split ratio to achieve the required micro-nano flow rate.The micro-flow rate meter was calibrated by traditional testing method.The results indicated that the micro-flow rate meter testing method possessed better accuracy and repeatability.Besides,the new method could measure accurate instant flow rate accurately,and the range wasμL/min to nL/min.This new method provided an effective way to design and improve micro-nano pumps.

关 键 词：微纳液相色谱仪 微泵 微流量计 瞬时流量 

分 类 号：TH833[机械工程—仪器科学与技术]