俞健;秦子明;方超;蔡标华;张露;吴大转;
YU Jian;Qin Zi-Ming;FANG Chao;CAI Biao-hua;ZHANG Lu;WU Da-zhuan;Wuhan Second Ship Design and Research Institute;Zhejiang University;

• 1:武汉第二船舶设计研究所
• 2:浙江大学

摘要(Abstract)：

旋涡泵作为低比转速泵越来越多地应用于船舶、航天航空和化工等领域。但是旋涡泵内部的流体压力脉动会引起泵和装置的振动噪声问题,成为高性能旋涡泵设计应用过程亟待解决的问题。本文通过数值模拟和试验分析相结合的方法分析一台旋涡泵的压力脉动特性,并探讨通过非等距叶片分布方式以降低压力脉动的方法。结果表明:叶片均布条件下,叶频是压力脉动的主要频率,且在阻隔面附近叶频的幅值最大。与均布叶片旋涡泵相比,非等距分布叶片旋涡泵在不影响其性能的同时能够显著降低在叶频处的脉动峰值,但在叶频两侧产生了附加的频率,而振动总级有明显的下降。该研究为减小旋涡泵的压力脉动和泵体振动提供了一个可行方案,对含旋涡泵系统的减振降噪具有参考意义。
The vortex pump,asatype of low specific pump,is more and more widely used in ship,aerospace and chemical engineering etc. However,the pressure fluctuation of fluid in the vortex pump would cause the vibration and noise of the pump and equipment,which has becomeone of the key issues needed to be solved in the design and application of high-performance vortex pump. This paper analyzed the characteristic of pressure fluctuation of a mini vortex pumpby the method of numerical simulation and experiment,and this paper alsodiscussed a random distribution method applied to reduce the pressure fluctuation. The results show that under the condition of even blade spacing,the blade passing frequency was dominative in the pressure fluctuation,and the pressure pulse amplitudes area was close to the stripper. The study also indicated that uneven circumferential spacing would yield additional frequency in the spectrum compared with even one and reduce the magnitude of the blade passing frequency and the total level of vibration markedly without decreasing the performance of the pump sharply. This paper proves a feasible scheme to reduce pressure fluctuation and vibration in a vortex pump,which is significatefor the vibration and noise reduction of the system with vortex pump.

关键词(KeyWords)： 旋涡泵;压力脉动;非等距分布;随机分布
vortex pump;pressure fluctuation;uneven spacing;random distribution

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 俞健;秦子明;方超;蔡标华;张露;吴大转;
YU Jian;Qin Zi-Ming;FANG Chao;CAI Biao-hua;ZHANG Lu;WU Da-zhuan;Wuhan Second Ship Design and Research Institute;Zhejiang University;

参考文献(References)：

• [1]Engeda A,Raheel M M.Systematic design approach for radial blade regenerative turbomachines[J].Journal of propulsion and power,2005,21(5):884-892.
• [2]Song J W,Engeda A,Chung M K.A modified theory for the flow mechanism in a regenerative flow pump[J].Proceedings of the Institution of Mechanical Engineers,Part A:Journal of Power and Energy,2003,217(3):311-321.
• [3]Quail F J,Stickland M,Baumgartner A.A one-dimensional numerical model for the momentum exchange in regenerative pumps[J].Journal of Engineering for Gas Turbines and Power,2011,133(9):093001.
• [4]Quail F J,Scanlon T,Baumgartner A.Design study of a regenerative pump using one-dimensional and three-dimensional numerical techniques[J].European Journal of Mechanics-B/Fluids,2012,31:181-187.
• [5]Francis J Quail,Thomas Scanlon,Matthew Strickland.Development of regenerative pump impeller using rapid manufacturing techniques[J].Rapid Prototyping Journal,2010,5(16):337-344.
• [6]王洋,傅剑辉,蒋其松.闭式叶轮叶片位置对旋涡泵性能的影响[J].农机化研究,2010,32(9):150-154.
• [7]沙毅,李金磊,刘祥松,等.自吸旋涡泵变转速性能与内部流场试验[J].农业机械学报,2009(12):119-124.
• [8]张菲茜,武鹏,吴大转,等.微型旋涡泵水力特性计算与轴向力研究[J].排灌机械工程学报,2014,32(8):658-662.
• [9]Yanagihara N,Murakami T,Shiraishi H,et al,Noise reduction of a regenerative pump[J].Transactions of the Japan Society of Mechanical Engineers Series B,1993,59(565):2863-2867.
• [10]表寿其,薛菲,袁建平,等.离心泵压力脉动对流动噪声影响的试验研究[J].排灌机械,2009,27(5):287-290.
• [11]河合勇太,本田义彦.流体泵:CN 102062104[P].2011-05-18.
• [12]武鹏,张菲茜,吴大转,等.非等距叶片微型旋涡泵压力脉动特性研究[J].工程热物理学报,2015(4):775-779.