南水北调宝应泵站新技术的应用

Application of new techniques in Baoying Pumping Station for South-to-North Water Transfer Project

宝应泵站是南水北调东线工程第一个开工建设、建成,并通过试运行验收,发挥作用的泵站,要求设计年运行时间长、水泵无故障运行时间长,水泵不能对水质产生二次污染。泵站建设中,在水泵选型、流道优化及先进的施工工艺技术、水泵叶片调节机构配置、电机绝缘在线检测等方面采用了一系列新技术。水泵采用了日立公司研制的性能指标具有国际领先水平的Ns1250KSP全调节混流泵水力模型;引进了具有国际先进水平的中置式液压调节机构技术;4台机组中,2台套为全引进的全调节式混流泵,另外2台水泵由国内公司按日立公司图纸生产。应用结果表明,新技术效果明显,达到了泵站运行高效、环保和安全可靠的目的。通过对宝应泵站新技术的分析,研究新技术对提高泵站性能的作用,对其在南水北调工程和其他工程中推广应用有重大意义。

Baoying Pumping Station is the first pumping station of eastern route for South-to-North Water Transfer Project, which has been built, completed and come into use. It is requested that the designed and normal operation time should be long, and the pump can not cause water pollution. During the building of pumping station, new construction techniques were.introduced, a series of new techniques were adopted about pump types selection, discharge passage optimization, pump blade adjusting mechanism and electromotor on-line insulation monitoring. The performance index Ns1250KSP type full adjusting mixed-flow pump hydraulic model made by Japan had reached international preceding level, the techniques of mid- hydraumatic adjusting mechanism had international advanced level. There were 4 pump units. Two units of full adjusting mixed-flow pump were introduced fully, the other were made by domestic company following the drawing for Japanese company. Application results showed that the effect of new techniques was obvious, and the objective that pump system operating in high efficiency, environmental protection, security and reliability had been attained.