Rational Design of a Pump-Sump and Its Model Testing
Rational Design of a Pump-Sump and Its Model Testing
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DOI：
10.1061/(asce)ps.1949-1204.0000074
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发表时间：
2011-05
影响因子：
2
通讯作者：
Z. Ahmad;B. Jain;S. Kumar;M. K. Mittal
中科院分区：
文献类型：
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作者：
Z. Ahmad;B. Jain;S. Kumar;M. K. Mittal
抽水蓄能电站、排水、农业和工业过程中使用的水泵会遇到由于吸入管中水非轴向流入而引起的振动、叶轮损坏和轴承磨损等运行问题。泵池和防涡器的合理设计使非轴流沿轴向排列，减少了泵中的这些运行问题。本文讨论了泵池的最先进设计及其模型测试的标准。本文对具有 5 个冷却水泵和 3 个辅助冷却水泵的泵池 1:10 比例模型进行了测试，报告了与流动分离、死区、表面和地下涡流、旋流角等相关的模型结果。在所有测试中均未观察到表面涡流；然而，在大多数没有防涡器的测试中，发现了 2 型（染料芯）表面下涡流和超过允许值的涡流角。带有八个翅片的锥形防涡器非常有效......
Water pumps used in pumped storage plant, drainage, agriculture, and industrial process experience operational problems such as vibration, impeller damage, and wear of bearing caused by nonaxial inflow of water in the suction pipe. Rational design of pump-sump and vortex breaker aligns the nonaxial flow in the axial direction and reduces these operational problems in the pump. This paper deals with state-of-the-art-design of a pump-sump and the criteria for its model testing. A 1∶10 scaled model of a pump-sump with five cooling water pumps and three auxiliary cooling water pumps was tested, and the model results related to separation of flow, dead zones, surface and subsurface vortices, swirl angle, etc., are reported in this paper. No surface vortices were observed in any of the tests; however, Type-2 (dye core) subsurface vortices and a swirl angle that is more than the permissible value were noticed in most of the tests without vortex breaker. A conical vortex breaker with eight fins was very effective...