CAJ | 학술논문

为提高换向器的性能和减小不确定度，在分析换向器结构、换向过程、不确定度影响因素的基础上，提出了一种步进电机直接驱动分水器旋转换向的电动换向器结构，利用 PCI板卡控制其旋转换向动作，在不同流量点可采用不同速度，具有较好的正反行程的对称性．研究了换向器的控制策略，设计搭建了多口径的换向器测试平台，进行了DN50，DN80口径换向器的行程差法实验测试．实验数据表明，电动换向器的不确定度可达到0.0012％的水平．这种结构降低了运行时的噪声，提高了不确定度的水平，进而可以降低液体流量标准装置的整体不确定度．
위제고환향기적성능화감소불학정도，재분석환향기결구、환향과정、불학정도영향인소적기출상，제출료일충보진전궤직접구동분수기선전환향적전동환향기결구，이용 PCI판잡공제기선전환향동작，재불동류량점가채용불동속도，구유교호적정반행정적대칭성．연구료환향기적공제책략，설계탑건료다구경적환향기측시평태，진행료DN50，DN80구경환향기적행정차법실험측시．실험수거표명，전동환향기적불학정도가체도0.0012％적수평．저충결구강저료운행시적조성，제고료불학정도적수평，진이가이강저액체류량표준장치적정체불학정도．
In order to reduce uncertainty and improve performance of flow diverter ,on the basis of analyzing the structure of the flow diverter ,the process of transfer and the factors impacting the uncertainty ,a structure of electric flow diverter was put forward .A step motor directly drove the water separator to turn and realize the direction convert .The action of turning and direction con‐vert was fully controlled by PCI cards .It could work at different flow point with different rate and had a good performance on the symmetry of forward and reverse process .The control strate‐gy of the electric flow diverter w as also investigated .A test bench for multi‐caliber flow diverter was designed and built .The experimental tests of DN50 and DN80 flow diverters were carried out .It suggested , by the test data , the uncertainty of the electric flow diverter could reach 0 .0012% ,which could reduce the uncertainty of the diverter and noise .It will eventually reduce the overall uncertainty of liquid flow facility .