排灌机械工程学报
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排灌机械工程学报  2014, Vol. 32 Issue (9): 737-741    DOI: 10.3969/j.issn.1674-8530.13.0224
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射流水冷结构对离心泵性能影响的试验研究
卢加兴, 袁寿其, 袁建平, 司乔瑞, 骆寅
江苏大学国家水泵及系统工程技术研究中心, 江苏 镇江 212013
Experiments on effects of AC motor water-cooling device on performance of centrifugal pump
Lu Jiaxing, Yuan Shouqi, Yuan Jianping, Si Qiaorui, Luo Yin
National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China
 全文: PDF (3644 KB)   HTML (1 KB)   输出: BibTeX | EndNote (RIS)      背景资料
摘要 与风冷系统对离心泵电动机进行散热相比,采用水冷系统能降低离心泵机组运行过程中电动机的噪声.为模拟水冷电动机冷却水的循环过程,设计了一种引射流装置,测试了去除电动机风扇前后离心泵机组在不同流量下噪声变化情况,研究了引射管径分别为6 mm和10 mm情况下离心泵的能量性能及空化特性.结果表明:相比较于风冷电动机,去除电动机风扇后泵机组随流量变化的系统噪声至少降低8.70 dB;引射管径为6 mm时能满足电动机的散热需要,对泵的性能和空化特性影响不大,并且在小流量工况下有改善泵驼峰的趋势;引射管径为10 mm时,泵的能量性能和空化特性变化较大,且在大流量工况下下降明显,这主要是由于引射管径太大,加大了泵的泄漏量,增加了其容积损失;引射管径为10 mm时,流量在0~15 m3/h范围内,泵扬程略有上升,关死点扬程提高了0.30 m.
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作者相关文章
卢加兴
袁寿其
袁建平
司乔瑞
骆寅
关键词离心泵   水冷电动机   引射流装置   降噪   空化     
Abstract: The noise of AC motor cooling fan may be decreased effectively by employing a water-coo-ling system compared with a usual air-cooling system. In this paper a kind of water-cooling device is designed to simulate the cooling water circulation process in an AC motor. The noise levels of the centrifugal pump with cooling fan and with water-cooling device are measured at various flow rates, respectively. Furthermore, the pump hydraulic and suction performances are tested for the devices with 6 mm and 10 mm diameter discharge nozzles and compared with the corresponding performances of the original pump. It is shown that the noise level of the original pump is reduced at least by 8.70 dB. The device with 6 mm diameter discharge nozzle can take away the heat generated by the AC motor and is subject to a little influence upon the hydraulic and suction performances. Interestingly, that device can raise the pump head at a low flow rate. Even though the device with 10 mm diameter discharge nozzle can improve the head over the 0-15 m3/h flow rate range, particularly the head is increased by 0.30 m at the shut-off condition, unfortunately, both the hydraulic and suction performances are degraded notably by the device, especially at a high flow rate. The increased leakage or volumetric loss in the pump caused from the enlarged nozzle diameter is responsible for the performance degradation.
Key wordscentrifugal pump   water-cooling motor   jetting device   noise reducing   cavitation   
收稿日期: 2013-11-09;
基金资助:

国家自然科学基金重点资助项目(51239005);“十二五”国家科技支撑计划项目(2011BAF14B04);江苏高校优势学科建设工程项目

通讯作者: 卢加兴(1987—),男,四川会理人,博士研究生(ljx0813@gmail.com),主要从事水力机械空化研究.   
作者简介: 袁寿其(1963—),男,上海金山人,研究员,博士生导师(shouqiy@ujs.edu.cn),主要从事排灌机械及流体机械研究.
引用本文:   
卢加兴,袁寿其,袁建平等. 射流水冷结构对离心泵性能影响的试验研究[J]. 排灌机械工程学报, 2014, 32(9): 737-741.
LU Jia-Xing,YUAN Shou-Qi,YUAN Jian-Ping et al. Experiments on effects of AC motor water-cooling device on performance of centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2014, 32(9): 737-741.
 
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