ISSN1006－7167CN31－1707/TＲESEAＲCHANDEXPLOＲATIONINLABOＲATOＲY第42卷第1期Vol．42No．12023年1月Jan．2023DOI:10．19927/j．cnki．syyt．2023．01．017基于流量补偿法的桌面型气体小流量测量装置设计赵鹏，沈平平，孙斌，彭衡芾，张洪军，吴燕琪(中国计量大学计量测试工程学院，杭州310018)摘要:为了缩短气体小流量点调节时间，提高小流量测量准确性及测试效率，设计了基于流量补偿法的桌面型气体小流量测量装置。采用层流流量测量技术实现微小流量测量;通过多条支路组合，扩大流量测量范围，快速调节流量测量点;采用流量补偿平衡法保持管路系统的阻抗不变，确保辅助风扇的工作性能稳定;采用LabVIEW编写测试软件。该装置弥补了小流量低雷诺数喷嘴无法精确测量的短板，同时解决了被测流量点调节时间长，流量波动大等问题。实验结果表明，该装置集成度高、成本低、测量精度高、测试速度快，系统运行稳定可靠，适合在高校实验教学中推广。关键词:流量补偿;层流元件;气体小流量;测量装置中图分类号:TP273.5文献标志码:A文章编号:1006－7167(2023)01－0085－04DesignofDesktopGasSmallFlowMeasurementDeviceBasedonFlowCompensationMethodZHAOPeng，SHENPingping，SUNBin，PENGHengfu，ZHANGHongjun，WUYanqi(CollegeofMetrology＆MeasurementEngineering，ChinaJiliangUniversity，Hangzhou310018，China)Abstract:Toshortentheadjustmenttimeandimprovetheaccuracyandefficiencyofsmallgasflowmeasurement，adesktopsmallgasflowmeasurementdevicebasedonflowcompensationmethodisdesigned．Laminarflowmeasurementtechnologyisadoptedtorealizemicroflowmeasurement．Theflowmeasurementrangeisexpandedandtheflowmeasurementpointsarequicklyadjustedatthesametimethroughthecombinationofmultiplebranches．Theflowcompensationbalancemethodisadoptedtokeeptheimpedanceofthepipelinesystemunchangedtoensurethestableworkingperformanceoftheauxiliaryfan．TestsoftwareisprogrammedusingLabVIEW．Asaresult，itmakesupfortheshortcomingsthatsmallflowcannotbeaccuratelymeasuredwithsonicnozzlemethodundertheconditionoflowＲeynoldsnumber，andthelongflowadjustmenttimeandlargeflowfluctuationproblemsaresolvedaswell．Themeasuringdevicehassuchadvantagesashighintegration，lowcost，highmeasuringaccuracy，fasttestingspeed，...
