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首页> 外文会议>Proceedings of the ASME power conference 2009 >Avoiding Common Pitfalls in Cooling Tower Pump Intake Design Related to Hydraulic Performance
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Avoiding Common Pitfalls in Cooling Tower Pump Intake Design Related to Hydraulic Performance

机译：避免与水力性能相关的冷却塔泵进气口设计中的常见陷阱

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摘要

Cooling towers are an attractive method to provide cooling water to power plants and other process cooling applications. The use of cooling towers versus once-through cooling significantly reduces the amount of water drawn from rivers and lakes, which is particularly important in many regions in the Western United States where water availability is a problem. Cooling towers also eliminate thermal pollution due to cooling water discharges into and greatly reduce the amount of water withdrawn from natural bodies of water.rnDespite these advantages, cooling towers provide special challenges with regard to the design of cooling water pump intake structures. These challenges must be addressed to ensure a reliable flow of cooling water with a minimum expenditure of power in order to maximize the plant capacity and efficiency. Design factors such as footprint, civil constraints, increases in plant capacity requiring increased cooling flow, and off-design operation can all affect the flow hydraulics and therefore negatively affect the performance of the pumps.rnIn this paper, general hydraulic design guidelines and performance acceptance criteria for pump intakes based on Hydraulic Institute Standards are outlined. Case studies from physical model studies of cooling water pump intakes are presented which may provide insight into likely problems and design flaws that engineers should be aware of while designing cooling tower pump intake structures. Examples of measures to avoid or remedy the commonly-encountered hydraulic problems derived from hydraulic model studies are discussed.
机译：冷却塔是一种吸引人的方法，可为发电厂和其他过程冷却应用提供冷却水。使用冷却塔与一次性冷却相比，使用冷却塔显着减少了从河流和湖泊中抽出的水量，这在美国西部许多缺水的地区尤其重要。冷却塔还消除了由于冷却水排入自然水体而造成的热污染，并大大减少了从自然水体中抽出的水量。尽管有这些优点，冷却塔在冷却水泵进气口结构设计方面提出了特殊的挑战。必须解决这些挑战，以确保以最少的电力消耗实现可靠的冷却水流，以最大化工厂的产能和效率。设计因素（例如占地面积，民用约束，工厂容量增加，需要增加冷却流量）以及非设计运行都会影响流量液压系统，因此会对泵的性能产生负面影响。概述了根据液压研究所标准的泵吸入标准。本文介绍了冷却水泵进气口的物理模型研究中的案例研究，这些案例研究可提供有关工程师在设计冷却塔水泵进气口结构时应注意的潜在问题和设计缺陷的见解。讨论了避免或补救从水力模型研究中得出的常见水力问题的措施示例。

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