黄河小北干流沿岸泵站技术改造探讨

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黄河小北干流主流在数公里宽的河道里游荡不定.沿岸夹马口、小樊和尊村3座大型泵站近10年来相继脱流,主流远离泵站引水口3~7km;小北干流是黄河含沙量最大的河段,沿岸高扬程泵站水泵受泥沙磨蚀破坏严重,叶轮失重速率高达18.6g/h.临河抽水的一级泵站引水口脱流和扬水上塬的二级泵站高扬程水泵受泥沙磨蚀破坏,是其沿岸泵站技术改造需要解决的两大难题.在着流位置兴建几处露天泵站,利用迁移方便的大型潜水轴流泉向脱流泵站集中供水,是解决泵站脱流的有效措施.引进具有世界领先水平的瑞士苏尔寿(SULZER)公司水泵叶轮出口部位喷焊金属陶瓷抗磨蚀,进口部位堆焊钨铬钴合金防汽蚀的涂层技术,是黄河小北干流沿岸泵站高扬程水泵技术改造的有效途径. The mainstream of the Yellow River north of the mainstream in a few kilometers wide river wandering. Xiamafan and Zuncun three large pump stations in the past 10 years have been off, the mainstream away from the pump station diversion port 3 ~ 7km; Xiaobei main stream is the Yellow River sediment is the largest river, high-lift pump station along the coast of the pump Sediment erosion serious damage, impeller weight loss rate as high as 18.6g / h. The first pump station of Linhe pumping station diverting water from the inlet and the second pump station on the Yangshang plateau high-head pump is damaged by sediment erosion, which is the two major problems that need to be solved in the technological transformation of its coastal pump station. It is an effective measure to solve the problem of pump shedding by constructing several open-air pump stations in the flow-passing position and using the large-scale submerged axial-flow springs that are convenient for migration to concentrate the water supply to the pumping stations. The introduction of the world’s leading SULZER pump impeller at the exit of the spray-welded cermet anti-erosion, imported parts of the anti-corrosion coating of stellite coating technology, the Yellow River is a small North Station along the pump station high Effective Way of Technical Reform of Head Pump.
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