Abstract:Concerning with the problem of cavitation easily occurring on the imported diaphragm metering pump in petrochemical plant,an improvement design is made on the composite membrane of diaphragm pump,pair of plunger seals,structure of hydraulic balance and compensating valve.Methods are taken such as to improve the safety relief valve and oil immersion type compensation system,to adopt pump base with bigger bearing capacity and unique staged plunger,to increase piston diameter and to adopt PTFE+NBR composite membrane,etc.To improve the cavitation performance of diaphragm metering pump,a comparison of cavitation test is made between the modified diaphragm metering pump and the original measuring pump.The improved structural design and adoption of new materials have greatly improved the cavitation performance of metering pump.
柴立平;李强;宫恩祥;何玉杰. 隔膜计量泵的改良设计与汽蚀性能的提高[J]. 排灌机械工程学报, 2007, 25(1): 17-20.
CHAI Li-ping, LI Qiang, GONG En-xiang, HE Yu-jie. Improvement on cavitation performance of diaphragm metering pump. Journal of Drainage and Irrigation Machinery Engin, 2007, 25(1): 17-20.