南水北调与水利科技2011，Vol.9Issue(4)：28-33,6.DOI:10.3724/SP.J.1201.2011.04028
水泵试验台流量原位标定系统研制
Research and Practice on the In-situ Calibration System for Flowrate of Pump-Test-Rig
摘要
Abstract
In order to assure the accuracy of pump test rig and stability of measurement, an in-situ calibration system with high precision should be equipped besides a flow meter with high precision. A volume-weight method for calibration is brought out to achieve bidirectional calibration. According to the design objective, the pump, weight tank, pool, commutator and standard measuring cylinder are calculated and selected. Based on measurement uncertainty method, the system uncertainty consisted of uncertainty of standard measuring cylinder, calculagraph, commutator and calibration sensor of volume method. The calculation formulas of these uncertainties are presented. The total expanded uncertainty of system is 0. 136% and the stability of flowrate is 0. 0212%. Results from calculation and pressure pulse experiment indicate that the combination of convert-frequency facility with invariable-ness' pool can maintain the pressure stability of test The volume-weight calibration method, which combines the weight method and volume method, can assure the accuracy and also reduce the expensive. It could be applied in similar test rigs.关键词
水泵/试验台/原位标定/流量/容积/称重Key words
pump/test rig/in-situ calibration/flowratesvolume/weight分类
建筑与水利引用本文复制引用
车晓红,成立,汤方平,罗灿..水泵试验台流量原位标定系统研制[J].南水北调与水利科技,2011,9(4):28-33,6.基金项目
国家自然科学基金资助项目(50809057) （50809057）
教育部留学出国人员科研启动基金(教外司留[2010]1561号) （教外司留[2010]1561号）
