叶片出口边侧斜对船用离心泵振动和水动力噪声的影响

PDF(1786 KB)

振动与冲击 ›› 2015, Vol. 34 ›› Issue (12) : 195-200.

论文

黄浩钦刘厚林王勇蒋玲林邵昌

作者信息 +

Effect of inclined trailing edge of blade on vibration and hydrodynamic noise of marine centrifugal pump

HUANG Hao-qin LIU Hou-lin WANG Yong JIANG Ling-lin SHAO Chang

Author information +

文章历史 +

摘要

本文以125clla-13型船用离心泵为研究对象，研究叶片出口边侧斜对船用离心泵振动和水动力噪声的影响。首先对出口边非侧斜和侧斜两种叶轮模型泵进行全流场非定常数值计算，提取蜗壳及泄漏流道壁面脉动激励作为载荷，对两种模型泵进行基于模态响应的振动计算和基于边界元法的水动力噪声计算，并对非侧斜出口模型泵进行振动测试，经试验验证，模型泵振动噪声数值预测具有一定可行性。进一步对比两种出口方式模型泵计算结果，分析表明：叶片非侧斜出口模型泵振动加速度计算结果整体高于叶片侧斜出口；两种出口方式模型泵声功率随工况变化趋势一致，设计工况声功率最小，大流量工况声功率最大，叶片侧斜出口模型泵声功率和声压级都明显低于非侧斜出口，且声压级降幅从APF到4BPF大致呈上升趋势。从减振降噪角度考虑，叶片侧斜出口方式优于非侧斜出口方式。该研究可为船用离心泵减振降噪设计提供参考。

Abstract

In order to analyze the effect of inclined trailing edge of blade on the vibration and hydrodynamic noise of marine centrifugal pump,a 125clla-13 type marine centrifugal pump was chosen as the research object.Firstly the blade with inclined trailing edge and the blade without inclined trailing edge were used to the unsteady numerical simulation of the pump’s whole flow passage respectively, and then the pressure fluctuation of the wall of volute and leakage flow was obtained as the vector load.By loading the vector as the vibration source and dipole source,the simulation of vibration based on modal response and simulation of the hydrodynamic noise based on BEM were conducted.Also the vibration experiment of the pump without inclined trailing edge was done,and it was verified by the vibration experiment that the simulation of NVH had certain feasibility.The further work was to analyze the simulation results of the two blade styles,the results show that the vibration acceleration of the blade with inclined trailing edge is less than the other one on the whole, the changing trend of the sound power of the two blade styles along with the conditions is consistent,the minimum of sound power is at the design condition,and the maximum is at the larger flow condition.All the sound power and the SPL of the blade with inclined trailing edge are obviously less than the other one,and the decreasing amplitude of the SPL is generally on the rise from APF to 4BPF.Considering the terms of vibration and noise reduction,the blade with inclined trailing edge is superior to the blade without inclined trailing edge.The research results are useful for the vibration and noise reduction design of the marine centrifugal pump.

导出引用

黄浩钦刘厚林王勇蒋玲林邵昌. 叶片出口边侧斜对船用离心泵振动和水动力噪声的影响[J]. 振动与冲击, 2015, 34(12): 195-200

HUANG Hao-qin LIU Hou-lin WANG Yong JIANG Ling-lin SHAO Chang. Effect of inclined trailing edge of blade on vibration and hydrodynamic noise of marine centrifugal pump[J]. Journal of Vibration and Shock, 2015, 34(12): 195-200

参考文献

[1]. 黄国富，常煜，张海民，等.低振动噪声船用离心泵的水力设计[J].船舶力学，2009,13(2):313-318.
HUANG Guo-fu,CHANG Yu,ZHANG Hai-min,et al. Hydraulic redesign on a marine centrifugal pump for hydro-borne vibration and noise reduction[J]. Journal of Ship Mechanics,2009,13(2):313-318.
[2]. Langthjem M A，Olhoff N.A numerical Study of Flow-induced noise in a two-dimensional centrifugal pump [J].Part I: Hydrodynamics Journal of Fluids and Structures, 2004(19)349-368.
[3]. Schmitz S.Reducing Pump noise in cooling tower applications[J].World pumps,2004(9):24-29.
[4]. 庞立军，钟苏，卜良峰，等.混流式水轮机异常噪声现场试验分析[J].振动与冲击，2012,31(14):39-42.
PANG Li-jun,ZHONG Su,BU Liang-feng,et al.Analysis of abnormal noise of francis turbine by scene test[J]. JOURNAL OF VIBRATION AND SHOCK,2012,31(14):
39-42.
[5]. D Wolfram,TH Carolus.Experimental and numerical investigation of the unsteady flow field and tone generation
in an isolated centrifugal fan impeller[J].Journal of Sound and Vibration,2010,329:4380-4397.
[6]. 黄曌宇，蒋伟康，刘春慧，等.旋转式压缩机气流噪声研究综述和展望[J].振动与冲击，2007,26(7):159-163.
HUANG Zhao-yu,JIANG Wei-kang,LIU Chun-hui,et al. REVIEW AND OUTLOOK OF STUDY ON GAS FLOW NOISE OF ROTATING COMPRESSORS[J].JOURNAL OF VIBRATION AND SHOCK,2007,26(7):159-163.
[7]. S.F.Chini,H.Rahimzadeh,M.Bahrami.Cavitation Detection of A Centrifugal Pump Using NoiseSpectrum[J]. Proceedings of IDETC/CIE 2005.2005,1-7.
[8]. Choi J S,McLaughlin D K,Thompson D E．Experiments on the unsteady flow field and noise generation in a centrifugal pump impeller[J].Journal of Sound and Vibration,2003, 263:493-514.
[9]. S.Yuan,J.Yang,J.Yuan,Y.Luo,and J.Pei. Experimental investigation on the flow-induced noise under variable conditions for centrifugal pumps[J].Chinese Journal of Mechanical Engineering,2012,25(03):456-462.
[10]. 袁寿其，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(05):287-290.
Yuan Shouqi,Xue Fei,Yuan Jiangping,et al.Experimental study on impact of pressure fluctuation on flow-noise in centrifugal pump[J].Drainage and Irrigation Machinery, 2009,27(05):287-290.
[11]. 谈明高，王勇，刘厚林，等.叶片数对离心泵内流诱导振动噪声的影响[J].排灌机械工程学报，2012,30(02): 131-135.
Tan Minggao,Wang Yong,Liu Houlin,et al.Effects of number of blades on flow induced vibration and noise of centrifugal pumps[J].Journal of Drainage and Irrigation Machinery Engineering,2012,30(02):131-135.
[12]. 刘厚林，王勇，袁寿其，等.叶片出口宽度对离心泵流动诱导振动噪声的影响[J].华中科技大学学报(自然科学版)，2012,40(1):123-127.
Liu Houlin,Wang Yong,Yuan Shouqi,et al.Effects of impeller outlet width on the vibration and noise from centrifugal pumps induced by flow[J].J.Huazhong Univ.of Sci. Tech.(Natural Science Edition),2012,40(1):123-127.
[13]. 王勇，刘厚林，袁寿其，等.不同叶片包角离心泵空化振动和噪声特性[J].排灌机械工程学报，2013,31（05）：390-393.
Wang Yong,Liu Houlin,Yuan Shouqi,et al.Characteristics of cavitation vibration and noise in centrifugal pumps with different vane wrap angles[J].Journal of Drainage and Irrigation Machinery Engineering，2013，31（05）：390-393.
[14]. Howe M S.Contributions to the theory of aerodynamic sound，with application to excess jet noise and the theory of the flute[J].Journal of Fluid Mechanics,1975(71):625-673.
[15]. Howe M S.Acoustics of Fluid Structure Interaction[J]. Cambridge University Press,Cambridge,1998.
[16]. Howe M S.Influence of wall thickness on Rayleigh conductivity and flow-induced aperture tones[J].Journal of Fluid and Structures,1997(5):351-366.
[17]. Kato C,Kaiho M,Manabe A.An overset finite-element Large-Eddy Simulation method with applications to turbomachinery and aeroacoustics[J].Journal of Applied Mechanics,2003(70):97-108.
[18]. F.A.Lu,D.T.Qi,X.J.Wang,et al. A numerical optimization on the vibroacoustics of a centrifugal fan volute[J].Journal of Sound and Vibration,331(2012):2365-2385.
[19]. 王宏光，徐小龙，杨爱玲，等. 轴流泵流动噪声数值模拟[J].排灌机械工程学报. 2011,29(03):199-203.
Wang Hongguang,Xu Xiaolong,Yang Ailing,et al. Numerical simulation of flow noise in axial-flow pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2011,29(03):199-203.
[20]. J Parrondo,J Pérez,R Barrio,et al.A simple acoustic model to characterize the internal low frequency sound field in centrifugal pumps[J].Applied Acoustics，72 (2011) 59–64.
[21]. 刘厚林，丁剑，王勇，等.基于大涡模拟的离心泵水动力噪声数值模拟[J].机械工程学报，2013,49(18):177-183.
LIU Houlin,DING Jian,WANG Yong,et al.Numerical Simulation of Hydrodynamic Noise in Centrifugal Pump Based on LES[J].JOURNAL OF MECHANICAL ENGINEERING,2013,49(18):177-183.
[22]. 杨爱玲，徐洋，李国平，等.叶片载荷对离心泵内流动激励力及噪声的影响[J].排灌机械工程学报，2014,32(1):27-32.
Yang Ailing,Xu Yang,Li Guoping,et al.Effect of blade loading on fluid-induced exciting force and noise in centrifugal pumps[J].Journal of Drainage and Irrigation Machinery Engineering,2014,32(1):27-32.
[23]. 黄俊雄，耿少娟，吴瑞，等.不同叶轮形式下离心泵噪声特性对比研究[J].声学学报，2010,35(2):113-118.
Huang Junxiong,Geng Shaojuan,Wu Rui,et al.Comparion of noise characteristics in centrifugal pumps with different types of impellers[J].ACTA ACUSTICA,2010, 35(2): 113-118.
[24]. Fu-Jun Wang, Li-Xia Qu, Ling-Yan He, et al.Evaluation of Flow-Induced Dynamic Stress and Vibration of Volute Casing for a Large-Scale Double-Suction Centrifugal Pump[J]. Mathematical Problems in Engineering，2013(2013):1-9.