含沙空化对轴流泵内压力脉动特性的影响

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摘要为了阐明含沙量、粒径、空化等因素对轴流泵内部压力脉动特性的影响，分别在清水、含沙水、清水空化及空化与泥沙磨损联合作用下，采用SST k-ω 湍流模型对轴流泵内部压力脉动特性进行数值模拟分析，得到以下结论：泥沙的加入会加剧压力脉动，且促进空化的发展；叶轮出口处脉动系数均大于进口处，说明除空化外，叶轮与导叶的动静干涉是引发压力脉动的一个主要因素，且空化会增大压力脉动，对泵的振动造成不利影响；压力脉动引发的振动信号主要频率成分包括2.5 Hz,10 Hz和20 Hz，与水泵的转频2.5 Hz，叶频10 Hz及其二倍频20 Hz保持一致。

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	林鹏
	向林嵚
	胡东
	翟松茂
	郭鹏程
	王舒

关键词 ：轴流泵, 含沙空化, 压力脉动, 数值模拟, 空化特性

Abstract：In order to clarify the influences of sediment concentration, particle size, cavitation and other factors on the internal pressure pulsation characteristics of an axial-flow pump, the SST k-ω turbulence model was adopted to do a simulation on the internal pressure pulsation characteristics under the conditions of clear water, sandy water, cavitation and cavitation under sand.The results show that the addition of sediment will increase the pressure pulsation and promote the development of cavitation.The pulsation coefficient at the impeller outlet is greater than that at the inlet.In addition to cavitation, the dynamic and static interference between the impeller and the guide vane is a major factor in causing pressure pulsation, and cavitation will further increase the pressure pulsation and adversely affect the vibration of the pump.The main frequency components of the vibration signal induced by pressure pulsation include those of 2.5 Hz, 10 Hz and 20 Hz, which are consistent with the pump frequency of 2.5 Hz, the leaf frequency of 10 Hz and its second harmonic frequency of 20 Hz.

Key words： axial-flow pump cavitation under sand condition pressure pulsation numerical simulation cavitation characteristics

收稿日期: 2020-03-24 出版日期: 2021-09-28

引用本文:

林鹏，向林嵚，胡东，翟松茂，郭鹏程，王舒. 含沙空化对轴流泵内压力脉动特性的影响[J]. 振动与冲击, 2021, 40(18): 140-147.
LIN Peng,XIANG Linqin,HU Dong,ZHAI Songmao,GUO Pengcheng,WANG Shu. Effect of cavitation on pressure pulsation characteristics of an axial-flow pump under sand conditions. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(18): 140-147.

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http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I18/140

［1］宋希杰,刘超,杨帆,等.进水漩涡诱发轴流泵压力脉动的试验研究［J］.振动与冲击,2018,37(17): 25-31.
SONG Xijie，LIU Chao，YANG Fan,et al.Tests for inlet vortex-induced pressure fluctuation of an axial flow pump［J］.Journal of Vibration and Shock,2018, 37(17): 25-31.

［2］陆荣,袁建平,李彦军,等.基于数字信号处理的轴流泵压力脉动试验研究［J］.振动与冲击,2017, 36(20):18-22.
LU Rong, YUAN Jianping, LI Yanjun, et al.An experimental investigation of pressure fluctuation in an axial-flow pump based on digital signal processing［J］.Journal of Vibration and Shock, 2017, 36(20):18-22.

［3］李彦军,陈超,裴吉,等.不同空化工况下轴流泵装置压力脉动试验［J］.农业机械学报,2018,49(12): 158-164.
LI Yanjun, CHEN Chao, PEI Ji,et al.Experiment on pressure fluctuation of axial flow pump system under different cavitation conditions ［J］.Transactions of the Chinese Society for Agricultural Machinery, 2018,49(12):158-164.

［4］GONZLEZ J, SANTOLARIA C.Unsteady flow structure and global variables in a centrifugal pump［J］.Journal of Fluids Engineering, 2006, 128(5): 937-946.

［5］LIU Y B, TAN L, LIU M, et al.Influence of prewhirl angle and axial distance on energy performance and pressure fluctuation for a centrifugal pump with inlet guide vanes［J］.Energies,2017,10(5): 695.

［6］TAN L, YU Z Y, XU Y, et al.Role of blade rotational angle on energy performance and pressure fluctuation of a mixed-flow pump［J］.Proceedings of the Institution of Mechanical Engineers Part A Journal of Power and Energy, 2017, 231(3): 227-238.

［7］万丽佳,宋文武,常方圆,等.颗粒浓度对高比转速离心泵非定常特性的影响［J］.热能动力工程, 2019,34(8): 50-56.
WAN Lijia, SONG Wenwu, CHANG Fangyuan, et al.Effect of particle concentration on unsteady characteristics of centrifugal pump with high ratio speed ［J］.Journal of Engineering for Thermal Energy and Power,2019,34(8):50-56.

［8］张宁,高波,李忠,等.离心泵口环间隙对压力脉动特性影响的实验研究［J］.工程热物理学报, 2019,40(7): 1520-1525.
ZHANG Ning,GAO Bo,LI Zhong,et al.Experimental in investigation of the influence of tip clearance on pressure pulsations of a centrifugal pump［J］.Journal of Engineering Thermophysics,2019,40(7):1520-1525.

［9］张硕,陈长盛.运行参数与轴流泵流体激励力的关系［J］.噪声与振动控制,2014,34(4):134-136.
ZHANG Shuo ,CHEN Changsheng.Research of fluid excitation of axial flow pump under different working conditions［J］.Noise and Vibration Control,2014,34(4): 134-136.

［10］朱荣生,龙云,林鹏,等.螺旋轴流泵内部流场与压力脉动研究［J］.农业机械学报,2014,45(7):103-110.
ZHU Rongsheng, LONG Yun, LIN Peng, et al.Internal flow and pressure pulsation characteristics of screw axial-flow pumps［J］.Transactions of the Chinese Society for Agricultural Machinery,2014,45(7): 103-110.

［11］张德胜,耿琳琳,施卫东,等.轴流泵水力模型压力脉动和振动特性试验［J］.农业机械学报, 2015, 46(6): 66-72.
ZHANG Desheng, GENG Linlin, SHIi Weidong, et al.Experimental investigation on pressure fluctuation and vibration in axial-flow pump model［J］.Transactions of the Chinese Society for Agricultural Machinery,2015, 46(6):66-72.

［12］HANG D S, SHI W D, PAN D Z, et al.Numerical and experimental investigation of tip leakage vortex cavitation patterns and mechanisms in an axial flow pump［J］.ASME Journal of Fluids Engineering, 2015, 137(12): 121103.

［13］张德胜,王海宇,施卫东,等.轴流泵多工况压力脉动特性的试验研究［J］.农业机械学报,2014, 45(12): 139-145.
ZHANG Desheng, WANG Haiyu, SHI Weidong, et al.Experimental investigation of pressure fluctuation with multiple flow rates in scaled axial flow pump［J］.Transactions of the Chinese Society for Agricultural Machinery,2014, 45(12):139-145.

［14］王志远.含沙水流下双吸式离心泵性能特性及稳定性实验研究［D］.武汉：武汉大学，2016.

［15］高超丹, 符向前, 贾梧桐,等.基于CFD的双吸离心泵水沙两相流压力脉动特性研究［J］.中国农村水利水电, 2017(10):223-228.
GAO Chaodan, FU Xiangqian, JIA Wutong, et al.Research on pressure fluctuation characteristics of water-sediment two-phase flow in double suction centrifugal pump based on CFD［J］.China Rural Water and Hydropower,2017(10):223-228.

［16］张钊,苏敏,韩伟,等.螺旋离心泵固液两相非定常流动诱导力特性［J］.排灌机械工程学报,2015,33(4): 296-300.
ZHANG Zhao,SU Min,HAN Wei,et al.Inducted force characteristics of solid-liquid two-phase unsteady flow in screw centrifugal pump［J］.Journal of Drainage and Irrigation Machinery Engineering,2015,33(4) : 296-300.

［17］程效锐,张楠,赵伟国.双吸泵输送含沙水流时蜗壳内压力脉动特性［J］.排灌机械工程学报,2015,33(1): 37-42．
CHENG Xiaorui, ZHANG Nan, ZHAO Weiguo.Pressure fluctuation features of sand particle-laden water flow in volute of double-suction centrifugal pump［J］.Journal of Drainage and Irrigation Machinery Engineering,2015,33(1): 37-42．

［18］韩伟,金毅,李仁年,等.颗粒对离心泵内部压力脉动特性的影响［J］.排灌机械工程学报,2015,33(6): 477-485.
HAN Wei,JIN Yi,LI Rennian.Effects of particles on pressure fluctuation characteristics in centrifugal pump［J］.Journal of Drainage and Irrigation Machinery Engineering,2015,33(6): 477-485.

［19］谈明高,丁荣,刘厚林,等.双流道污水泵内非定常压力脉动特性研究［J］.振动与冲击,2016,35(14):155-163.
TAN Minggao, DING Rong, LIU Houlin,et al.Unsteady characteristics of pressure pulsation in a double channel sewage pump［J］.Journal of Vibration and Shock,2016,35(14):155-163.

［20］SCHNEIDER G E,RAW M J.Control volume finite-element method for heat transfer and fluid flow using colocated variables-1.computational procedure［J］.Numerical Heat Transfer,1987,11(4): 363-390.

［21］STEPHAN B, THOMAS P, PEER S.Effects of impeller geometry on reliability and costs of wastewater pumps ［J］.World Pumps,2004,2004(452): 34-38.

［22］SAKR S A.Type curves for pumping test analysis in coastal aquifers ［J］.Ground Water,2001,39(1):5-9.

［23］陆于衡,冉红娟,史天蛟,等.翼型间隙空化数值模拟的湍流模型比较分析［J］.排灌机械工程学报,2020,38(4): 353-359.
LU Yuheng, RAN Hongjuan, SHI Tianjiao, et al.Comparison and analysis of turbulence models for numerical simulation of cavitation flow in hydrofoil with gap［J］.Journal of Drainage and Irrigation Machinery Engineering,2020,38(4): 353-359.

［24］MEJRI I, BAKIR F, REY R.Comparison of computational results obtained from a homogeneous cavitation model with experimental investigations of three inducers ［J］.Journal of Fluids Engineering,2006,128(6):1308-1323.

［25］林鹏,刘和云,胡东,等.大型轴流泵泥沙磨损特性研究［J］.润滑与密封,2019,44(9):89-95.
LIN Peng,LIU Heyun,HU Dong,et al.Research on sediment wear characteristics of large axial-flow pump［J］.Lubrication Engineering,2019,44(9):89-95.

［26］潘罗平．水轮机压力脉动试验方法的研究［J］.水力发电学报,2003,82(3):97-113.
PAN Luoping.A study on the testing method of pressure fluctuation［J］.Journal of Hydroelectric Engineering, 2003,82(3):97-113.

［27］HAGELSTEIN D, HILLEWAERT K, VAN DEN BRAEMBUSSCHE R A, et al.Experimental and numerical investigation of the flow in a centrifugal compressor volute［J］.Journal of Turbomachinery, 1999, 122(1):1-10.

［28］KARASSIK I J, MESSINA J P, COOPER P, et al.Herald pump handbook［M］.New York: McGraw-Hill, 2001.