前后直管内径对涡轮流量计的影响研究  

The Influence of Diameter of Straight Pipe on Turbine Flowmeter

作　　者：张毅治[1] 张永胜[1] 刘彦军[1] ZHANG Yizhi;ZHANG Yongsheng;LIU Yanjun(Changcheng Institute of Metrology & Measurement,Beijing 100095,China)

机构地区：[1]航空工业北京长城计量测试技术研究所,北京100095

出　　处：《计测技术》2019年第1期47-50,共4页Metrology & Measurement Technology

基　　金：国家技术基础科研项目(JSJL2017205A005)

摘　　要：涡轮流量计在安装和使用过程中往往存在直管段口径与流量计通径不完全一致的现象。选取CL系列和LWGY系列涡轮流量计,在燃油动态流量标准装置上进行了上下游直管段不同口径条件下的校准试验,从而得到直管段口径对涡轮流量计K系数的影响。试验证明,直管段口径所引入的误差不可忽视,因此在使用或校准涡轮流量计时应务必保证直管段口径与流量计通径一致。During the installation and use of turbine flowmeters, the diameter of the straight pipe is not usually exactly the same as that of the turbine flow-meter,which effect the K-coefficient of the turbine flow-meter. The CL series and LWGY series turbine flow-meters were selected to carry out the calibration testsunder, different diameter conditions of upstream and downstream straight pipes on a dynamic fuel flow standard device, so as to obtain the influence of the diameter of straight pipe on the K-coefficient of the turbine flowmeter. The experimental results show that the error introduced by the diameter of straight pipe can not be ignored.Therefore, it is required that the diameter of straight pipe is consistent with that of the flow-meter in the use or calibration of turbine flow-meter.

关 键 词：涡轮流量计 支管口径 K系数 

分 类 号：TB9[一般工业技术—计量学]