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宝应县属于苏北黄淮平原,地处里下河中部.全县现有20ZLB—70泵站640座775台,占全县各种固定站泵数的77.6%.这些泵站的运行扬程大多在2米左右,泵站平均装置效率仅29.9%,其主要原因是运行工况点远离高效区.今年,我们选用高邮水泵厂生产的20ZLB—125泵的叶轮、导叶对20ZLB—70泵进行改造,试验站选择在圩区有一定代
Baoying County belongs to the Huang-Huai Plain in northern Jiangsu Province and is located in the middle of Lixiahe River. There are 775 sets of 20ZLB-70 pumping stations in the county, accounting for 77.6% of the total number of fixed stations in the county. Most of these pumping stations have their operational lift At about 2 meters, the average pumping unit efficiency is only 29.9%, mainly due to the operating conditions far away from the high-efficiency zone. This year, we selected the 20ZLB-70 pump impeller and guide vane produced by the Gaoyou Water Pump Factory for the 20ZLB-70 pump Transformation, pilot station selection in the polder area has a generation