滕人博,刘建瑞
TENG Ren-bo,LIU Jian-rui(Jiangsu University

• 1:江苏大学

摘要(Abstract)：

循环射流自吸系统是一种自吸快、对泵外特性影响小的新型射流式自吸装置。其中喷嘴的结构及尺寸直接影响到泵的自吸时间。对不同尺寸参数的喷嘴进行自吸时间性能试验,并探索新结构形式的喷嘴有助于进一步分析问题,改进设计。试验结果表明,喷嘴直径是影响喷嘴自吸效果的主要因素。对同一泵体,喷嘴直径存在最佳值,直径大于或小于最佳值都会增加泵的自吸时间。喷嘴锥角及流道长度对泵的自吸时间略有影响。双流道喷嘴的自吸时间要明显长于单流道喷嘴,泵体自吸时间随流道间距增加而变长。
A jetting-recycle system which can prime faster without efficient dropping is introduced.The dimension of nozzle is a vital parameter which is the direct acting factor to the self-priming time.In order to realize the self-priming for normal centrifugal pump,the experiment is done to make the further research on the nozzle and modified the structure.The experimental result indicated that the diameter of nozzle which has a optimum size is the major factor to the priming-time of pump.The cone angle and the length of nozzle have less effect on the priming time of pump.The nozzle with two conduit need more time to prime than one conduit nozzle.The time will longer as soon as gap enlarged.

关键词(KeyWords)： 离心泵;自吸装置;自吸时间;喷嘴
centrifugal pump;self-priming equipment;self-priming time;nozzle

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划(863计划)(2006AA100211)

作者(Author): 滕人博,刘建瑞
TENG Ren-bo,LIU Jian-rui(Jiangsu University

参考文献(References)：

• [1]刘建瑞,施卫东,潘中永.导叶式自循环射流自吸泵[P].中国专利:ZL03259418.6.
• [2]刘建瑞,施卫东,孔繁余,等.离心泵自吸射流可自动关闭回路系统[P].中国发明专利:200510040906.7.
• [3]薛胜雄,刘建瑞,金维亚.我国喷射技术的现状与展望[J].高压流体技术与应用,2000,28(9):1-3.
• [4]周克山.射流泵设计应用示例[J].化工装置技术,2003,24(3):42-44.
• [5]Narui Hiroshi,Inagaki Susumu.An experiment studyon the flows in the jet pump[J].Nippon Kikai GakkaiRonbunshu,1985,52(477):2032-2037.
• [6]Mueller NHG.Water Jet Pump[J].J Hydroul DirASCU.90 Hr3.,Mar,1964:83-113.
• [7]李世英.喷灌喷头理论与设计[M].北京:兵器工业出版社,1995.
• [8]王铁成,徐林.射流泵流场计算[J].水泵技术,2003,(6):4-7.
• [9]郭惠珍,郭明光.多功能射流泵参数的确定和性能分析[J].山东工程学院学报,1994,8(3):18-23.