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水泵一般均配带有闸阀,逆止阀和底阀。在正规的泵站中,通常设有真空泵充水设施。此时,为减少扬程损失,底阀可不装设。但为防止水泵倒转(作水轮机工况运行),普遍装设逆止阀,这就产生严重的水锤问题。为解决这一问题,往往加强钢管强度,增加管壁厚度耗费了大量的钢材,增加了建设投资。安全仍无充分保证。为安全计,有些高扬程泵站往往采用水锤消除器,安全爆破膜及安全阀等装置。但此类装置除要花一定投资(设备本身,管道、土建及安装等投资)外,更重要的是动作可靠性差,危险仍然存在。还增加了管理维护工作量。因此,这一问题成为泵站
Pumps are generally equipped with a gate valve, check valve and bottom valve. In a regular pump station, a vacuum pump is usually provided. At this point, in order to reduce head loss, the bottom valve may not be installed. However, in order to prevent the pump from reversing (operating as a water turbine), check valves are generally installed, which causes serious water hammer problems. In order to solve this problem, often strengthening the strength of steel pipe, increasing the thickness of the pipe consumes a large amount of steel, increasing the construction investment. Security is still not fully guaranteed. For safety, some high-lift pump stations often use water hammer eliminator, safety burst membrane and safety valve and other devices. However, in addition to such devices to spend some investment (equipment itself, pipelines, civil engineering and installation of investment), more importantly, the reliability of the movement is poor, the danger still exists. Also increased the management and maintenance workload. Therefore, this issue becomes pumping station