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Drainage pumping station, which is important component of the Hetao irrigation area drainage system, is the only way to excrete drainage after irrigation. Majority drainage pumping stations were built in 1960s to 1970s in irrigation area. Resently, after implemented plan of save water, the modulus of drainage had changed. So a lot of pumping stations were away from the normal working, inefficient stir, and caused waste of energy seriously, reduced the efficiency of pumping stations. Therefore, it is important to research the key technologies of renovation of pumping stations in the Hetao irrigation area.Significant changes in flow and water level, which made the technologies of renovation of the pumping stations is urgent extremely. The key of renovation is grasp accurately the modulus of drainage, the change of displacement and water level of total drain, the displacement and water level of Wu Liangsuhai after saving water. This paper applies to the modulus method of row field of the Hetao irrigation area, and then prodict the displacement, the displacement almost had reduced by half after saving water. Using the method of multiple linear regression of practical statistics, to established formula about water level of the pumping station, then to analyze its significance and select the optimal equation. The results show that the effect is good and the significance is obvious. Then take flow into the equation, and calculate the corresponding water level, finally get lift. Its decreased by 0.6 meter almost.On the basis of master operating parameters of pump station, to re-design or renovate the station. For example, master the flow ane water level of the seventh drain after saving water, and reselect pump. It show that the condition of pump station had improved completely. Pumping efficiency had improved extraordinary. It avoid the waste of energy effectively.
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