在大辛辛那提水厂（GCWW），能源管理是一项重要工作 操作所有泵送设施的组成部分。在最近的一次能源管理会议上 通过对一座35 mgd泵站的分析，确定其显著节能 如果泵送操作发生根本性变化，就可以实现。正常操作 该设施的主要部分是一个“倾倒和泵送”操作，其中来自上游的水 配水系统将水库注满，然后将水从水库泵送至水库 下一个压力区。因为储液罐的入口压力显著降低 比预期的高（70磅/平方英寸对20磅/平方英寸），开发了一种创新的解决方案 将泵站从“卸载和泵送”操作转换为增压泵 活动进行了广泛的水力和经济分析，以确定 可以对现有泵进行改造，使其作为增压泵高效运行，从而 降低所需的马力使用，并获得显著的节能效果。 然而，必须保持泵作为提升泵运行的能力，以 出于水质目的，继续使用部分2.5 MG蓄水池。这个 水力分析表明，通过仔细修整泵叶轮，泵 可以在增压模式和提升模式下高效转换为泵。这个 经济分析表明，改造现有泵的成本可以降低 在不到三年的时间里恢复了预期的节能效果。长期的 据估计，电力节约约占当前电力成本的20%。而且 在进入储液罐之前，必须将70 psi的进口压力降至约10 psi。 将水节流至蓄水池导致关键入口过早失效 导致上游配水系统出现不理想的压力波动 系统在进行泵改造的同时，将控制阀连接到储液罐 进气口被一种叫做套筒阀的独特阀门所取代。包括表格、数字。

At the Greater Cincinnati Water Works (GCWW), energy management is an important component of operating all pumping facilities. During a recent energy management analyses of a 35 mgd pump station, it was determined that significant energy savings could be achieved if the pumping operation was radically changed. The normal operation of the facility was a "dump and pump" operation, where the water from the upstream distribution system fills the reservoir, and then the water is pumped from the reservoir to the next pressure zone. Because the inlet pressures to the reservoir were significantly higher than anticipated (70 psi versus 20 psi), an innovative solution was developed to convert the pump station from a "dump and pump" operation to a booster pump operation. Extensive hydraulic and economic analyses were performed to determine if the existing pumps could be modified to efficiently operate as booster pumps, thereby lowering the required horsepower usage and capturing significant energy savings. However, the pump's ability to also operate as a lift pump had to be maintained to continue using part of the 2.5 MG storage reservoir for water quality purposes. The hydraulic analyses showed that by carefully trimming the pump impellers, the pumps could be converted to pump efficiently in both the booster mode and the lift mode. The economic analysis showed that the cost of modifying the existing pumps could be recovered with the projected energy savings in less than three years. The long-term electrical savings were estimated at about 20 percent of the current electrical costs. Also, the 70-psi inlet pressure had to be reduced to about 10 psi before entering the reservoir. Throttling the water into the reservoir was causing premature failure of a critical inlet valve and resulted in undesirable pressure fluctuations on the upstream distribution system. In conjunction with the pump modifications, the control valve to the reservoir inlet was replaced with a unique valve called a sleeve valve. Includes tables, figures.