Noise Reduction by Actively Leaning Blades in Centrifugal Pump as Turbine

Abstract

Abstract: Abstract： To reduce the fluidinduced interior/exterior noise in centrifugal pump as turbine (PAT), from the relation between inphase hydrodynamic action and radiated noise, the leaned angle formula of blade in ideal condition was derived, and the noisereduction activecontrol approach was proposed, without affecting the hydraulic performance. The hydraulic performance and interior noise of two types of PATs were compared based on the experiments. After verifying the finite element model of the casing structure, the finite element method/automatically matched layer (FEM/AML) method was used to reduce the exterior noise. The results show that the leaned blade can keep the original hydraulic performance of PAT and reduce the peak value at fundamental frequency and the total sound energy. The efficiency at larger flow rates can be mostly improved by 1.09 percentage point, the Aweighted sound pressure level (OASPL) of interior noise is basically reduced by 0.07% to 3.02%, and the overall sound power of exterior noise is approximately reduced by 11.97% at 110 m3/h.

Key words: Key words： centrifugal pump as turbine (PAT), leaned blade, interior noise, exterior noise, finite element method/automatically matched layer (FEM/AML)

CLC Number:

TH 311

DAI Cuia，DONG Liangb，KONG Fanyub，BAI Yuxingb，XIA Binb. Noise Reduction by Actively Leaning Blades in Centrifugal Pump as Turbine[J]. Journal of Shanghai Jiaotong University, 2016, 50(04): 575-582.

References

［1］杨军虎, 张雪宁, 王晓晖. 基于离心泵的多级液力透平的性能预测与数值模拟［J］. 兰州理工大学学报, 2012, 38(2): 4246. YANG Junhu, ZHANG Xuening, WANG Xiaohui. Performance prediction and numerical simulation of hydraulic turbine based on multistage centrifugal pump［J］. Journal of Lanzhou University of Technology, 2012, 38(2)： 4246. ［2］卢傅安．离心风机和压缩机流动诱发振动噪声的数值与试验研究［D］．西安：西安交通大学能源与动力工程学院， 2014．［3］DONG R，CHU S，KATZ J．Effect of modification to tongue and impeller geometry on unsteady flow，pressure fluctuations，and noise in a centrifugal pump［J］．Transcations of the ASME， 1997， 119（3）： 506515．［4］NEISE W．Noise reduction in centrifugal fans：a literature survey［J］．Journal of Sound and Vibration，1976， 45（3）： 375403．［5］吴仁荣．船用离心泵的运行振动和减消措施［J］．机电设备，2004(6)：3739． WU Renrong. Operating vibration and antivibration measures for marine centrifugal pumps［J］. Mechanical and Electrical Equipment, 2004(6): 3739. ［6］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(4)： 313318． HUANG Guofu, CHANG Yu, ZHNAG Haimin, et al. Hydraulic redesign on a marine centrifugal pump for hydroborne vibration and noise reduction［J］. Journal of Ship Mechanics, 2009(4):313318. ［7］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(2)：113118． HUANG Junxiong, GENG Shaojuan, WU Rui, et al. Comparison of noise characteristics in centrifugal pumps with different types of impellers［J］. Acta Acustica, 2010(2)：113118．［8］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（2）：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(2): 131135. ［9］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（5）： 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(5): 390393. ［10］刘厚林，丁剑，谈明高，等．叶轮出口宽度对离心泵噪声辐射影响的分析与试验［J］．农业工程学报， 2013，29（16）： 6673． LIU Houlin, DING Jian, TAN Minggao, et al. Analysis and experimental of centrifugal pump noise based on outlet width of impeller［J］. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(16): 6673. ［11］丁剑，刘厚林，王勇，等．叶片出口角影响离心泵噪声辐射数值研究［J］．振动与冲击，2014，33（2）：122127． DING Jian, LIU Houlin, WANG Yong, et al. Numerical study on the effect of blade outlet angle on centrifugal pump noise［J］. Journal of Vibration and Shock, 2014, 33(2): 122127. ［12］祝磊，袁寿其，袁建平，等．阶梯隔舌对离心泵压力脉动和径向力影响的数值模拟［J］．农业机械学报，2010， 41（1）： 2126． ZHU Lei, YUAN Shouqi, YUAN Jianping, et al. Numerical simulation on pressure fluctuations and radial hydraulic forces in centrifugal pump with steptongue［J］. Transactions of the Chinese Society for Agricultural Machinery, 2010, 41(1): 2126. ［13］祝磊，袁寿其，袁建平，等．不同径向间隙对离心泵动静干涉作用影响的数值模拟［J］．农业机械学报，2011， 42（5）： 4955. ZHU Lei, YUAN Shouqi, YUAN Jianping, et al. Numerical simulation on rotorstator interaction in a centrifugal pump with fifferent gaps between Impeller and tongue［J］. Transactions of the Chinese Society for Agricultural Machinery, 2011, 42(5): 4955. ［14］代翠, 孔繁余, 董亮, 等. 泵作透平尾水管压力脉动特性分析与试验［J］. 中南大学学报(自然科学版), 2015, 46(8): 31313137. DAI Cui, KONG Fanyu, DONG Liang, et al. Analysis and experimental investigation of pressure fluctuation in draft tube of pump as turbine［J］. Journal of Central South University(Science and Technology), 2015, 46(8): 31313137. ［15］代翠, 孔繁余, 董亮, 等. 叶片包角对泵作透平水力径向力的影响［J］. 振动与冲击, 2015, 34(18): 6972. DAI Cui, KONG Fanyu, DONG Liang, et al. Effect of blade wrap angle on the radial force of entrifugal pump as turbine［J］. Journal of Vibration and Shock, 2015, 34(18): 6972. ［16］代翠，孔繁余，冯子政，等．泵作透平流动诱导噪声实验及数值研究［J］．华中科技大学学报(自然科学版)，2014， 42（7）： 1721. DAI Cui, KONG Fanyu, FENG Zizheng, et al. Numerical and experimental investigation of flowinduced noise in centrifugal pump as turbine［J］. Journal of Huazhong University of Science and Technology (Nature Sciences Edition), 2014, 42(7): 1721. ［17］代翠，孔繁余，董亮，等．基于响应面法的离心泵作透平水力和声学性能优化［J］．农业工程学报， 2015， 31（15）： 4047. DAI Cui, KONG Fanyu, DONG Liang, et al. Hydraulic and acoustic property optimization for centrifugal pump as turbine based on response surface method［J］. Transactions of the Chinese Society of Agricultural Engineering, 2015, 31(15): 4047. ［18］董亮，代翠，孔繁余，等. 叶片出口安放角对离心泵作透平噪声的影响［J］. 农业工程学报， 2015， 31(6)： 6975. DONG Liang, DAI Cui, KONG Fanyu, et al. Impact of blade outlet angle on acoustic of centrifugal pump as turbine［J］. Transactions of the Chinese Society of Agricultural Engineering, 2015, 31(6): 6975. ［19］江伟，李国君，张新盛．离心泵叶片出口边倾斜角对压力脉动的影响［J］．排灌机械工程学报， 2013， 31（5）：369372． JIANG Wei, LI Guojun, ZHANG Xinsheng. Effect of oblique angle of blade trailing edge on pressure fluctuation in centrifugal pump［J］. Journal of Drainage and Irrigation Machinery Engineering, 2013, 31(5): 369372. ［20］赵忖，祁大同，毛义军，等．离心风机气动噪声控制的理论与实验研究［J］．风机技术， 2013（6）： 2434． ZHAO Cun, QI Datong, MAO Yijun, et al. Theoretical and experimental study on aerodynamic noise control of centrifugal fan［J］. Compressor, Blower & Fan Technology, 2013(6): 2434. ［21］刘晓良．T919No.4A离心风机降噪的数值优化与试验研究［D］．西安：西安交通大学能源与动力工程学院， 2009．［22］QI D T, MAO Y J, LIU X L, et al. Experimental study on the noise reduction of an industrial forwardcurved blades centrifugal fan［J］. Applied Acoustics, 2009, 80(4): 10411050. ［23］SPENCE R, AMARALTeixeira J. Investigation into pressure pulsations in a centrifugal pump using numerical methods supported by industrial tests［J］. Computers & Fluids, 2008, 37(6): 690704. ［24］DAI C, KONG F Y, DONG L. Pressure fluctuation and its influencing factor analysis in circulating water pump［J］. Journal of Central South University, 2013, 20(1): 149155. ［25］王佐民．噪声与振动测量［M］．北京：科学出版社，2009．

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