前置不同诱导轮高速离心泵旋转空化特性研究

doi:10.7527/S1000-6893.2013.0275

流体力学与飞行力学

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前置不同诱导轮高速离心泵旋转空化特性研究

郭晓梅¹, 李昳², 崔宝玲², 朱祖超²

1. 浙江水利水电专科学校机械电子工程系, 浙江杭州 310018;
2. 浙江理工大学浙江省流体传输技术研究重点实验室, 浙江杭州 310018

收稿日期:2012-09-12 修回日期:2012-11-28 出版日期:2013-07-25 发布日期:2012-12-11
通讯作者: 李昳 E-mail:liyi0511@163.com
作者简介:郭晓梅,女,硕士,副教授。主要研究方向:流体机械内部流动机理。Tel:0571-86929117,E-mail:guoxiaomei19@163.com;李昳,女,硕士,副教授,硕士生导师。主要研究方向:流体机械内部流动机理。Tel:0571-86843348,E-mail:liyi0511@163.com
基金资助:
国家自然科学基金(51249003);浙江省科技厅公益工业项目(2012C21013);浙江理工大学重中之重学科开放基金项目(ZSTUMD2011A007)

Research on the Rotation Cavitation Performance of High-speed Rotation Centrifugal Pump with Different Pre-positioned Inducers

GUO Xiaomei¹, LI Yi², CUI Baoling², ZHU Zuchao²

1. Department of Mechanical and Electrical Engineering, Zhejiang Water Conservancy and Hydropower College, Hangzhou 310018, China;
2. The Provincial Key Laboratory of Fluid Transmission Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China

Received:2012-09-12 Revised:2012-11-28 Online:2013-07-25 Published:2012-12-11
Supported by:
National Natural Science Foundation of China (51249003); Zhejiang Province Public Industrial Project(2012C21013); Open Fund Project of Priority among Priorities Discipline of Zhejiang Sci-Tech University(ZSTUMD2011A007)

摘要/Abstract

摘要：

以高速诱导轮离心泵为研究对象,开展了无诱导轮、前置等螺距诱导轮、前置变螺距诱导轮及前置分流叶片诱导轮4种情况下离心泵全流道的空化数值模拟和汽蚀特性实验研究。通过外特性实验研究得到:在同一流量下,前置等螺距诱导轮离心泵的扬程最低,前置变螺距诱导轮离心泵的扬程次之,前置分流叶片诱导轮离心泵的扬程较两者稍高。通过汽蚀实验和数值模拟研究得到:在前置3种诱导轮的情况下,离心泵的汽蚀性能都得到了改善,其改善效果从低到高依次是:变螺距诱导轮、分流叶片诱导轮、等螺距诱导轮。通过对汽相体积分数分布情况的研究得到:诱导轮的吸力面除进口外缘容易发生汽蚀外,叶片出口靠近轮毂侧也较容易发生汽蚀;对比分析主叶轮和诱导轮的汽蚀情况,得到诱导轮汽蚀的严重性与离心叶轮的汽蚀严重性并非成正比的结论。

关键词: 离心泵, 诱导轮, 空化, 数值模拟, 汽蚀实验

Abstract:

Flow cavitation simulation and cavitation characteristics experiment of a high-speed centrifugal pump are carried out. The pump is equipped respectively without a inducer, with a pre-positioned equal pitch inducer, a pre-positioned variable pitch inducer and a pre-positioned shunt type inducer. The research of the external characteristics experiment reveals that the head of the centrifugal pump with a pre-positioned shunt type inducer is highest, next is the pump with a pre-positioned variable pitch inducer, while the lowest is that with a pre-positioned equal pitch inducer. The research of the cavitation experiment and simulation shows that the cavitation performance of the centrifugal pump with a pre-positioned equal pitch inducer is best, next is the pump with a pre-positioned shunt type inducer, and the last is that with a pre-positioned variable pitch inducer. Cavitation occurs easily on the outside edge of the inducer blade at the suction surface as well as at the outlet near the hub. A comparison of the cavitation of the impeller and the inducer shows that the degree of the cavitation of the inducer is not directly proportional to that of the impeller.

Key words: centrifugal pump, inducer, cavitation, numerical simulation, cavitation test

中图分类号:

V444

郭晓梅, 李昳, 崔宝玲, 朱祖超. 前置不同诱导轮高速离心泵旋转空化特性研究[J]. 航空学报, 2013, 34(7): 1572-1581.

GUO Xiaomei, LI Yi, CUI Baoling, ZHU Zuchao. Research on the Rotation Cavitation Performance of High-speed Rotation Centrifugal Pump with Different Pre-positioned Inducers[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(7): 1572-1581.

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E-mail：hkxb@buaa.edu.cn

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前置不同诱导轮高速离心泵旋转空化特性研究

Research on the Rotation Cavitation Performance of High-speed Rotation Centrifugal Pump with Different Pre-positioned Inducers

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