排灌机械工程学报
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排灌机械工程学报  2019, Vol. 37 Issue (8): 656-661    DOI: 10.3969/j.issn.1674-8530.17.0246
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  
非均匀来流对乏燃料冷却泵性能的影响
乔翼飞1,顾希垚1,张芳2,王岳3,张亮3,尹俊连1*
1. 上海交通大学机械与动力工程学院, 上海 200240; 2. 中石油管道有限责任公司西气东输分公司, 上海 200122; 3. 上海核工程研究设计院, 上海 200233
Effects of nonuniform inflow condition on performance of spent fuel pool cooling pump
QIAO Yifei1, GU Xiyao1, ZHANG Fang2, WANG Yue3, ZHANG Liang3, YIN Junlian1*
1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. West-East Gas Pipeline Branch, Petro China Pipeline Company, Shanghai 200122, China; 3.Shanghai Nuclear Engineer Research and Design Institute, Shanghai 200233, China
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摘要 非能动技术核电厂中的乏燃料冷却泵进口前有弯头存在,将导致进口来流不均匀,这种非均匀来流会对泵性能产生一定的影响.采用数值模拟方法,针对乏燃料冷却泵不同来流条件下的性能曲线以及来流流场结构的演化进行对比分析.分析结果表明:非均匀来流对乏燃料冷却泵外特性影响较小,虽然泵的进口处存在较为明显的来流畸变,流场速度分布紊乱,但是乏燃料冷却泵在渐缩段及肘形进水室的结构设计可减弱来流非均匀性的影响,叶轮进口处的影响几乎不存在.由此证明乏燃料冷却泵特殊的肘形进口结构能对来流重新整合,从而降低来流对泵的性能影响,在核电厂进口管道的设计上无需采用较长的进口管段.
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乔翼飞
顾希垚
张芳
王岳
张亮
尹俊连*
关键词乏燃料冷却泵   非均匀来流   水力特性   速度分布     
Abstract: There are elbows in the suction pipe of spent fuel pool(SFP)cooling pump in passive pressurized nuclear power plants. These existing elbows can result in nonuniform flow conditions to the pump, and subsequently can generate a certain negative impact on pump performance. In this paper, the performance curves of a horizontal double-suction centrifugal SFP cooling pump and the velocity distribution at different positions in the pump are compared between different inlet flow conditions to clarify the impact based on numerical simulation methods. The results show that these nonuniform inlet flow conditions affect a little on the pump head and efficiency. Even though a noticeable distorted and disordered flow condition does occur at the inlet of the pump, its impact can be weakened by using a special entry design such as convergent section and elbow chamber to eliminate the negative impact. It is proved that the special entry design can rectify inlet flow velocity profile and depress adverse impact on the pump performance. A long suction pipe is no need to the pump in pipeline design of passive pressurized nuclear power plants.
Key wordsSFS pump   non-uniform inflow   hydraulic characteristics   distribution of velocity   
收稿日期: 2017-11-07;
基金资助:国家自然科学基金资助项目(51576125)第一作者简介:乔翼飞(1994—),男,河南驻马店人,硕士研究生(qiaoyifei@sjtueducn),主要从事流体机械内部流场研究
引用本文:   
乔翼飞,顾希垚,张芳等. 非均匀来流对乏燃料冷却泵性能的影响[J]. 排灌机械工程学报, 2019, 37(8): 656-661.
QIAO Yi-Fei-,GU Xi-Yao-,ZHANG Fang- et al. Effects of nonuniform inflow condition on performance of spent fuel pool cooling pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(8): 656-661.
 
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