Influence of geometrical parameters of vibration damping raft on vibration characteristics of a marine centrifugal pump
WANG Xinhai1, LI Yu2, LIU Houlin2*, WANG Kai2,3, WANG Shuhong4, WANG Yue4
1. Navy Military Representative Department Resident in Huludao, Hulutao, Liaoning 125004, China; 2. National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 3. Institute of Fluid Engineering Equipment, Jiangsu Industrial Technology Research Institute, Zhenjiang, Jiangsu 212009, China; 4. Xi′an Aero-engine Controls Technology Co. Ltd., Aviation Industry Corporation of China, Ltd., Xi′an, Shaanxi 710077, China
Abstract:A vertical marine centrifugal pump was selected as research object for a better understanding of influence of geometrical parameters of a vibration damping raft on performance of the pump. An approximate model of pump vibration characteristic and raft mass was established based on the Kriging model in terms of front cavity length l1, width w1, thickness t1, lateral cavity length l2, width w2, thickness t2. Twelve numerical experimental designs were generated by using the Latin Hypercube method and the vibration characteristics of two rafts respectively with the lightest mass and the minimal vibration intensity were analyzed. The results show that l1 and t2 affect the mass of raft most significantly. With the increase of l1, the mass of raft decreases first and then rises. With the increase of t2, the mass of raft increases first and then two peaks appear. t2 shows a slight effect on the vibration intensity. The vibration intensity of raft all decreases first and then increases with increa-sing l1, w1, t1, l2 and w2. The vibration attenuation with the lightest mass and the minimal vibration intensity are significantly improved, as a result, the vibration attenuation increases to 22.6 dB and 21.8 dB, respe-ctively, from 14.2 dB.
王新海,李钰,刘厚林*,王凯,,王淑红,王玥. 浮筏参数对船用离心泵振动特性的影响[J]. 排灌机械工程学报, 2019, 37(11): 929-935.
WANG Xinhai, LI Yu, LIU Houlin*, WANG Kai,, WANG Shuhong, WANG Yue. Influence of geometrical parameters of vibration damping raft on vibration characteristics of a marine centrifugal pump. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(11): 929-935.
[1]TAN Lei, ZHU Baoshan, WANG Yuchuan, et al. Numerical study on characteristics of unsteady flow in a centrifugal pump volute at partial load condition[J]. Engineering computations, 2015,32(6):1549-1566.
[2]LIU Yabin, TAN Lei. Tip clearance on pressure fluctuation intensity and vortex characteristic of a mixed flow pump as turbine at pump mode[J]. Renewable energy, 2018,129:606-615.
[3]TAN Lei, ZHU Baoshan, CAO Shuliang, et al. Nume-rical simulation of unsteady cavitation flow in a centrifu-gal pump at off-design conditions[J]. Journal of mechanical engineering science, 2014,228(11):1994-2006.
[4]高新民, 陈冰, 吕敬高, 等. 船用离心泵减振降噪分析[J]. 流体机械, 2011,39(9):50-53.
GAO Xinmin, CHEN Bing, LYU Jinggao, et al. Analy-sis on reducing vibration and noise of centrifugal pump using in ships[J]. Fluid machinery, 2011,39(9):50-53.(in Chinese)
[5]卢永刚, 王洋, 王秀礼, 等. 管道输油泵流体噪声模拟及泵噪声测试方法[J]. 排灌机械工程学报, 2017,35(8):645-651.
LU Yonggang, WANG Yang, WANG Xiuli, et al. Experimental and simulation methods of flow noise on pipeline oil pumps[J]. Journal of drainage and irrigation machinery engineering, 2017,35(8):645-651.(in Chinese)
[6]孙红灵. 弹性基础隔振系统的简化性能指标和有源控制力[J]. 声学学报, 2016,41(2):227-235.
SUN Hongling. Simplified performance indices and active control force of vibration isolation systems with elastic base[J]. Acta acustica, 2016,41(2):227-235.(in Chinese)
[7]SUN Hongling, ZHANG Kun, CHEN Haibo, et al. Improved active vibration isolation systems[J]. Tsinghua science & technology, 2007,12(5): 533-539.
[8]郑学贵. 舰船浮筏减振特性研究[J]. 舰船科学技术, 2018,40(2A):7-9.
ZHENG Xuegui. Research on vibration damping chara-cteristics of navel vessel floating raft[J]. Ship science and technology, 2018,40(2A):7-9.(in Chinese)
[9]游彩霞. 浮筏隔振系统建模及隔振器参数识别方法研究[D]. 武汉: 武汉科技大学, 2017.
[10]胡泽超, 何琳, 李彦. 隔振器分布对浮筏隔振系统隔振性能的影响[J]. 舰船科学技术,2016,38(11):48-52.
HU Zechao, HE Lin, LI Yan. The influence of the isolator′s distribution on floating raft isolation system′s performance[J]. Ship science and technology, 2016,38(11):48-52.(in Chinese)
[11]NIU Junchuan, SONG Kongjie, LIM C W. On active vibration isolation of floating raft system[J]. Journal of sound and vibration, 2005,285(1/2):391-406.(in Chinese)
[12]沈良杰, 范进, 陈彦北, 等. 复合隔振器隔振装置的性能研究[J]. 装备环境工程, 2017,14(5):56-59.
SHEN Liangjie, FAN Jin, CHEN Yanbei, et al. Performance of vibration isolation device for composite vibration isolator[J]. Equipment environmental enginee-ring, 2017,14(5):56-59.(in Chinese)
[13]王宇, 陈兴林, 李光民. 隔振器对舰船基座振动特性的影响[J]. 舰船科学技术, 2012,34(1):30-35,49.
WANG Yu, CHEN Xinglin, LI Guangmin. Influence of vibration isolators to the vibration characteristics of a ship foundation[J]. Ship science and technology, 2012,34(1):30-35,49.(in Chinese)
[14]杜奎, 伍先俊, 程广利, 等. 浮筏隔振系统隔振器最佳布置方案研究[J]. 海军工程大学学报, 2005,17(2):92-94,99.
DU Kui, WU Xianjun, CHENG Guangli, et al. Resea-rch of best isolation fixing scheme of floating raft system[J]. Journal of Naval University of Engineering, 2005,17(2):92-94,99.(in Chinese)
[15]王凯, 刘厚林, 袁寿其, 等. 离心泵叶轮轴面图的全自动CFD优化[J]. 农业工程学报,2011,27(10):39-43.
WANG Kai, LIU Houlin, YUAN Shouqi, et al. Automatic optimization of impeller meridional shape for centrifugal pumps based on CFD[J]. Transactions of the CSAE, 2011,27(10):39-43.(in Chinese)