Abstract:Aimed at the requirements of centrifugal pumps with large power and high pressure, such as high head, large flow, high rotation speed, high operation reliability, and so on, some key technologies were studied through hydraulic model design, rotor dynamics design and safety design of high pressure devices. The hydraulic model of pumps was designed by applying CFD technology to optimize flow parts, meanwhile the influence of the tip clearance flow on the dynamics of the rotor systems was considered. In the design of rotor dynamics, the twist vibration characteristics of units shafting and critical speed were analyzed in order to ensure rotor rigidity design and unit operation reliability, especially, the “wet” critical speed analysis was introduced when pump practical operation conditions were considered. In the optimization design of highpressure shell based on stress classification, the theory of pressure vessel design was introduced and 3D numerical simulation was carried out. These key technologies have been successfully applied in highpressure pump with 3 800 kW power, which provides a reference for development of centrifugal pump with large power and high pressure in domestic.
王乐勤,平仕良,吴大转. 大功率高压离心泵的优化设计[J]. 排灌机械工程学报, 2010, 28(6): 470-473.
Wang Leqin, Ping Shiliang, Wu Dazhuan. Optimal design of centrifugal pump with large power and high pressure. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(6): 470-473.
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