排灌机械工程学报
   首页  学报介绍  编 委 会  作者园地  征订启事  编校法规  编读往来  录用公告  广告合作   行业新闻  留  言  English 
排灌机械工程学报  2013, Vol. 31 Issue (1): 11-14    DOI: 10.3969/j.issn.1674-8530.2013.01.003
泵理论与技术 最新目录 | 下期目录 | 过刊浏览 | 高级检索 Previous Articles  |  Next Articles  
叶片开槽对低比转数离心泵内部流动的影响
 刘威, 袁寿其, 李晓俊, 潘中永
(江苏大学流体机械工程技术研究中心, 江苏 镇江 212013)
Effects of slotted blades on internal flow in centrifugal pump of low specific speed
 LIU  Wei, YUAN  Shou-Qi, LI  Xiao-Jun, PAN  Zhong-Yong
(Research Center of Fluid Machinery Engineering and Technology,  Jiangsu University, Zhenjiang, Jiangsu 212013, China)
 全文: PDF (3957 KB)   HTML (1 KB)   输出: BibTeX | EndNote (RIS)      背景资料
摘要  基于Fluent泵内流场数值模拟及性能预测,针对低比转数离心泵在小流量范围内叶轮内部流动的不稳定性,对低比转数离心泵进行了叶片改型尝试,分析了在改型前后叶轮内部流场流动情况及离心泵性能的变化规律,发现在叶片单开槽后离心泵的扬程在小流量范围内较未开槽前有所上升,效率有所提高;但在大流量范围内离心泵的扬程较未开槽前呈下降趋势,并且效率也随之降低,因此,低比转速离心泵在小流量情况下表现出来的流动不稳定性可以通过叶片单开槽的方法来进行抑制.为了研究叶片开槽数目对其影响,将开槽数目增加至2个,研究其内部流场流动情况和性能变化规律,发现叶片双开槽在抑制叶轮流道流动不稳定性及效率的提高上不及叶片单开槽情况.研究结果表明:在小流量工况下,叶片开槽对离心泵内部流动紊流情况会有一定的改善作用,而开槽数目是否合理也将影响离心泵的性能.
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
刘威
袁寿其
李晓俊
潘中永
关键词离心泵   叶片开槽   效率   内部流场   数值模拟     
Abstract: To remedy the instability of internal flow in the impeller of a centrifugal pump of low specific speed at low flow rates, the impeller was redesigned to have slotted, then the flows in the pump with this kind of impeller and the original one were analyzed by using CFD codeFluent to identify effects of such blades on the internal flow and performance. It was shown that the pump head and total efficiency are a little increased at a lower flow rate as one slot was presented on every blade blades compared with the pump with the original impeller, but they are declined at a higher flow rate, suggesting the blade with one slot on it can improve the instability of internal flow in the impeller passages of centrifugal pumps of low specific speed at partial flow rates. In order to clarify influence of number of slots on the internal flow and the performance, an additional slot was made on every blade as well, and it was found that the instability of flow and efficiency are poorer against the case with one slot. It was confirmed that the slots on blades do improve the turbulence of flow in the impeller of a centrifugal pump of low specific speed at lower flow rates  point in some degree, however, that number of slots will affect the performance of the pump.
Key wordscentrifugal pump   slotted blade   efficiency   interior flow field   numerical simulation   
收稿日期: 2011-12-08; 出版日期: 2013-01-31
基金资助:

 国家杰出青年科学基金资助项目(50825902); 江苏省自然科学基金创新学者攀登项目(BK2009006)

通讯作者: 袁寿其(1963—),男,上海金山人,研究员,博士生导师(shouqiy@ujs.edu.cn),主要从事流体机械及排灌机械研究.   
作者简介: 刘威(1985—),男,河北承德人,硕士(rosewewe@163.com),主要从事流体机械研究.
引用本文:   
刘威,袁寿其,李晓俊等. 叶片开槽对低比转数离心泵内部流动的影响[J]. 排灌机械工程学报, 2013, 31(1): 11-14.
LIU Wei,YUAN Shou-Qi,LI Xiao-Jun et al. Effects of slotted blades on internal flow in centrifugal pump of low specific speed[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(1): 11-14.
 
[1] Kergourlay G, Younsl M, Bakir F, et al. Influence of splitter blades on the flow field of a centrifugal pump: Testanalysis comparison[J]. International Jouranl of Rotating Machinery, 2007:85024.
[2] 杨敏官,顾海飞,刘栋,等. 离心泵叶轮内部湍流流动的数值计算及试验[J]. 机械工程学报,2006,42(12):180-185.
Yang Minguan, Gu Haifei, Liu Dong, et al. Internal turbulent flow in centrifugal pump impeller numerical calculation and test[J]. Chinese Journal of Mechenical Engineering, 2006,42(12):180-185. (in Chinese)
[3] Spence R,Amaral T J.Investigation into pressure pulsations in a centrifugal pump using numerical methods supported by industrial tests[J].Computers & Fluids, 2008,37(6):690-704.
[4] 杨敏官,李辉,刘栋,等.液下泵内三维湍流流动的数值模拟[J].机械工程学报,2008,44(3):160-165.
Yang Minguan,Li Hui,Liu Dong, et al.Numerical simulaton of 3D turbulent flow in underwater pump[J]. Chinese Journal of Mechenical Engineering, 2008,44(3):160-165. (in Chinese)
[5] 李沈坚,李春,周碧池.离心泵叶轮内流场数值模拟及分析[J].能源研究与信息,2008,24 (4):227-231.
Li Shenjian, Li Chun, Zhou Bichi. Numerical simulation and analysis of internal flow through the centrifugal pump impeller [J]. Energy Research and Information, 2008,24 (4):227-231. (in Chinese)
[6] 潘中永,李晓俊,袁寿其,等. CFD技术在泵上的应用进展[J]. 水泵技术,2009(1):1-5.
[7] Pan Zhongyong, Li Xiaojun, Yuan Shouqi, et al. Progress of CFD technology application on pump[J]. Pump Technology, 2009(1):1-5. (in Chinese)
[8] 崔宝玲,赵瑞,张玉良,等.高速开式离心泵内部的流动特性研究[J].工程热物理学报,2010,31(4):601-605.
Cui Baoling,Zhao Rui,Zhang Yuliang, et al.The research on flow characteristics of highspeed centrifugal pump with open impeller[J]. Journal of Engineering Thermophysics,2010,31(4):601-605. (in Chinese)
[9] Yuan Shouqi, Zhang Jinfeng,Yuan Jianping, et al. Effects of splitter blades on the law of inner flow within centrifugal pump impeller[J]. Journal of Mechanical Engineering, 2007,20(5):57-63.
[10] Stefan Berten, Philippe Dupont, Laurent Fabre, et al. Experimental investigation of flow instabilities and rotating stall in a highenergy centrifugal pump stage[C]//Proceedings of the ASME Fluids Engineering Division Summer Meeting, 2009: 505-513.
[1] 周凌九, 袁玲丽. 射流泵内部流动计算中不同湍流模拟方法的比较[J]. 排灌机械工程学报, 2013, 31(1): 25-30.
[2] 杨国来, 伍国果, 刘小雄, 曹文斌, 许敏影. 轴流式止回阀动态特性[J]. 排灌机械工程学报, 2013, 31(1): 46-49.
[3] 朱荣生, 李小龙, 施卫东, 刘苓苓, 王韬. 潜水自引气曝气机的数值模拟与试验研究[J]. 排灌机械工程学报, 2013, 31(1): 50-55.
[4] 陆伟刚, 严登丰, 甄峰. 水泵及泵装置效率换算方法[J]. 排灌机械工程学报, 2012, 30(6): 677-682.
[5] 王松林, 王玉川, 桂绍波, 高传昌, 曹树良. 液体射流泵内部流动分析:Ⅰ试验与三维数值模拟[J]. 排灌机械工程学报, 2012, 30(6): 655-659.
[6] 王海民, 周裁民, 黄雄, 林浩. 不同翼型前置导叶正预旋对离心泵性能影响[J]. 排灌机械工程学报, 2012, 30(6): 660-664.
[7] 吴贤芳, 刘厚林, 王凯, 谈明高, 杨东升. 全工况下双流道泵内流三维PIV测量[J]. 排灌机械工程学报, 2012, 30(6): 665-669.
[8] 施卫东, 王川, 司乔瑞, 徐静, 陆伟刚. 级间间隙对新型井泵性能的影响[J]. 排灌机械工程学报, 2012, 30(6): 627-631.
[9] 成立, Bart P.M. van Esch, 刘超, 周济人, 金燕. 喷水推进混流泵叶片径向力[J]. 排灌机械工程学报, 2012, 30(6): 636-640.
[10] 郑铁刚, 戴会超, 丁全林. 不同突扩比下空间淹没水跃的水力计算[J]. 排灌机械工程学报, 2012, 30(6): 670-676.
[11] 李良超, 曾祥炜, 向科峰, 徐斌, 宋丹路. 梭式止回阀开启过程的数值模拟[J]. 排灌机械工程学报, 2012, 30(6): 710-714.
[12] 钱忠东, 郜元勇, 谢华, 王志远. 基于CFD技术的双吸式离心泵转轮副叶片优化[J]. 排灌机械工程学报, 2012, 30(5): 503-507.
[13] 吴卫国, 薛世峰. 任意曲线坐标系下二维浅水方程的数值模拟[J]. 排灌机械工程学报, 2012, 30(5): 598-602.
[14] 袁寿其, 胡博, 陆伟刚, 李彤, 黄志攀. 中比转数离心泵多工况设计[J]. 排灌机械工程学报, 2012, 30(5): 497-502.
[15] 施卫东, 龙飞, 张德胜, 冷洪飞, 王国涛. 潜水轴流泵内部固液两相流动的数值模拟[J]. 排灌机械工程学报, 2012, 30(5): 508-512.

江苏大学梦溪校区(镇江市梦溪园巷30号)图书馆5楼 0511-84440893 传真0511--84440033
Copyright 江苏大学杂志社 2010-2015 All Rights Reserved