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Study on Improving the Turning Technique of the Former Pump Stations Along the South-to-north Water Transfer Project |
ZHANG Duo-feng, ZHAO Bing-feng, LIANG Qiu-sheng, CHANG Ya-li |
Shandong Vocational College of Water Conservancy, Qufu, Shandong 273100, China; Qufu Bureall of Water Resources, Qufu, Shandong 273100, China |
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Abstract With the south-to-north water transfer project completed, the design water levels of the rivers and lakes along its line will generally rise, and the net heads of the former pump stations will decline, which makes the pumps with lower efficiency, probably brings about the surcharge of the motors, and influences the economy benefits and safe operation of pump stations. In this paper, the method of specific calculation and implementation, with the aim to raise pumps efficiency for centrifugal pump stations through the use of turning impellers to adjust the workings points, has been researched. The method, which has many advantages such as less money investment, easy operation and good effects, is suitable for the technical innovations in those contrifugal pump stations on the condition that the water level will have risen by the time the transfer water from south-to-the-north project is put to use.
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Received: 08 August 2013
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