谈明高,张景,刘厚林,王勇,黄浩钦.叶片不等间距对离心泵水动力噪声的影响[J].农业机械学报,2016,47(2):22-27,34.
Tan Minggao,Zhang Jing,Liu Houlin,Wang Yong,Huang Haoqin.Effect of Uneven Spacing Blade on Hydrodynamic Noise of Centrifugal Pump[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(2):22-27,34.
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叶片不等间距对离心泵水动力噪声的影响   [下载全文]
Effect of Uneven Spacing Blade on Hydrodynamic Noise of Centrifugal Pump   [Download Pdf][in English]
投稿时间:2015-08-25  
DOI:10.6041/j.issn.1000-1298.2016.02.003
中文关键词:  立式离心泵  振动噪声  叶片不等间距
基金项目:“十二五”国家科技支撑计划项目(2013BAF0102)、江苏省科技支撑计划项目(BE2014879)、江苏省“六大人才高峰”项目(ZBZZ-040)、江苏省产学研项目(BY2014123-07)和江苏高校优势学科建设工程项目(PAPD)
作者单位
谈明高 江苏大学 
张景 江苏大学 
刘厚林 江苏大学 
王勇 江苏大学 
黄浩钦 江苏大学 
中文摘要:以一台六叶片单级单吸立式离心泵为研究对象,研究了叶片不等间距对离心泵流体诱导噪声的影响。首先基于转子自动平衡理论建立了3种叶片不等间距叶轮模型,并对模型泵全流场进行了CFD数值计算,以提取蜗壳及泄露流道壁面偶极子声源。通过振动试验与基于模态响应的振动计算结果对比,验证了模型泵振动噪声数值预测的可行性,并进一步借助直接边界元法完成了水动力噪声计算。对比叶片不等间距叶轮与原叶轮模型计算结果,分析表明:叶片不等间距布置后泵总声功率级与声压级频谱均整体明显降低,但各不等间距模型总声功率级差距较小,最大仅为0.5%;除原叶频及谐频处声压级峰值外,叶片不等间距模型在145Hz及其谐频上产生了新的声压级峰值,噪声能量更分散,噪声频谱更平稳;最小角间距 θ  min =50°时模型更能兼顾叶频和145Hz处辐射噪声特性,噪声性能更优。
Tan Minggao  Zhang Jing  Liu Houlin  Wang Yong  Huang Haoqin
Jiangsu University,Jiangsu University,Jiangsu University,Jiangsu University and Jiangsu University
Key Words:vertical centrifugal pump  noise and vibration  uneven spacing blade
Abstract:In order to analyze the effect of uneven spacing blade on the flow induced noise of centrifugal pump, a single-stage single-suction vertical centrifugal pump with six blades was chosen as the research object. Firstly, based on the theory of automatic rotor balance, three impeller models with uneven spacing blade were established, then with the purpose of extracting the dipole source of the wall of volute and leakage flow, the whole flow passage numerical simulation of model pumps was executed by applying CFD. The results of vibration simulation based on model response were compared with vibration experiment to verify the certain feasibility of NVH simulation, the simulation of hydrodynamic noise was further completed by applying BEM. The final work was to analyze the simulation results of the uneven spacing blade models and the original impeller model, the results showed that there were little differences in total SPL between uneven spacing blade models, which had lower total SPL and spectrum of SPL than original impeller model in general. New peaks of SPL were produced at 145 Hz and its harmonic frequency in uneven spacing blade models, except for the peaks of SPL at original blade frequency and its harmonic frequency, and the energy of noise was more disperse, the spectrum of noise was more stable. Compared with the other two models, the model with θ min of 50°could do better when considering the blade frequency and the characteristics of exterior noise at 145 Hz, and it had better noise performance. The results of the research can provide reference for further optimization of the noise of centrifugal pump.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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