Author:
Li Haiyang,Li Xuejing,Chen Yuyang,Sun Lijun
Abstract
Abstract
Standard flow facility is a platform for performance test of flowmeters. Flow diverter is an essential component of liquid flow facility based on flying start-and-stop method, and is also a key equipment deciding the uncertainty of flow facility. In order to improve the accuracy of large flow facilities, the effects of acceleration performance and liquid shock force on the uncertainty of the flow diverter with large flow rate is analyzed. The actuation structure using servo motor and reducer to drive the flow diverter is put forward. The effect of step motor and servo motor on the uncertainty of the flow diverter is verified by real-flow test. The results of experiment indicate that servo motor driven flow diverter has faster transfer acceleration and more stable transfer process. The test results of transition time difference method show that the uncertainty of servo motor driven flow diverter is less than 0.003%.
Reference8 articles.
1. Development of a new diverter system for liquid flow calibration facilities;Shimada;Flow Measurement and Instrumentation, Japan,2003
2. Development of weighting tank system employing rotating double wing diverter;Doihara;Flow measurement and Instrumentation, Japan,2006
3. Model-based flow diverter analysis for an improved uncertainty determination in liquid flow calibration facilities;Engel;Meas. Sci. Technol,2010
4. Study on the diverter that swap in/swap out in the same direction;Chen;Process Automation Instrumentation,2013