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| Comparison of conduit profiles for Siyang pumping station in Eastern
Route of SouthtoNorth Water Diversion Project |
| Ding Huaibo1,2, Pan Weifeng1,2 |
| 1.Luoyun Water Conservancy Project Management Divison in Jiangsu Province, Suqian, Jiangsu 223800, China; 2.Project Construction Office of the Siyang Pumping Station in Jiangsu Province SouthtoNorth Water Diversion, Suqian, Jiangsu 223700, China |
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Abstract A vertical axialflow pump system will be applied to Siyang pumping station in Eastern Route Project of SouthtoNorth Water Diversion Project; hence profile 1(elbow inlet conduit plus siphon outlet conduit) and profile 2(bell inlet conduit and scroll outlet conduit) are put forward for the station in preliminary design stage. The hydraulic performance, pump structure, installation and overhaul, flow cutoff way and project investment are compared between the two profiles. After a comprehensive technical economic comparison is conducted, the following primary results are achieved: the flow patterns and hydraulic performance of profile 1 are better than profile 2, further its flow cutoff way is simpler and more reliable, and the daily maintenance work load is less than profile 2. Importantly, the pump structure of profile 2 is more complex, causing inconvenient installation and overhaul. Even though profile 1 is subject to a bigger pump house and a higher construction cost, its whole investment is still 1.465 million Yuan lower than profile 2. A conclusion can be drawn that two profiles have their own characteristics and are applicable. However, profile 1 has more obvious superiority on the whole and should be adopted firstly. According to the results of comparison and selection, eventually, profile 1 is chosen for Siyang pumping station.
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Received: 17 April 2014
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