基于源项法的闭式回路架构对主泵性能影响的分析研究

王晓放; 李家玲; 鲁业明; 刘昊然; 李滢玥; 汪辉; 崔辉如

doi:10.13832/j.jnpe.2022.06.0030

基于源项法的闭式回路架构对主泵性能影响的分析研究

doi: 10.13832/j.jnpe.2022.06.0030

1.
大连理工大学能源与动力学院，辽宁大连，116000
2.
陆军工程大学训练基地，江苏徐州，221000
3.
陆军工程大学国防工程学院，南京，210000

基金项目: 国家自然科学基金（52005073）；中央高校基本科研业务费（DUT22RC(3)041）；中国博士后科学基金（2021T140084, 2021M690510）；国家科技重大专项（J2019-I-0012）

详细信息

作者简介:
王晓放（1960—），女，教授，现从事先进叶轮机械设计与分析方面工作，E-mail: dlwxf@dlut.edu.cn

通讯作者:
鲁业明，E-mail: luyeming@dlut.edu.cn

中图分类号: TL353
计量
- 文章访问数: 244
- HTML全文浏览量: 78
- PDF下载量: 38
- 被引次数: 0
出版历程
- 收稿日期: 2021-12-07
- 修回日期: 2021-12-23
- 刊出日期: 2022-12-14

Analysis and Research on the Influence of Closed Loop Structure on Main Pump Performance Based on Source Term Method

1.
School of Energy and Power Engineering, Dalian University of Technology, Dalian, Liaoning, 116000, China
2.
Training base, Army Engineering University, Xuzhou, Jiangsu, 221000, China
3.
National Defense Engineering College, Army Engineering University, Nanjing, 210000, China

摘要

摘要: 传统的主泵流动分析平台多为简化的开式流路，与真实闭式回路运行工况存有较大差异。为探究主泵在真实回路中的流动特性与机理，以包含密封口环间隙的主泵全通道水力模型为研究对象，采用源项法进行稳态、瞬态计算分析研究。稳态计算结果表明：闭式循环回路中形成漩涡流态，致使主泵进口处发生预旋，产生入流畸变，导致湍动能有所增加，能量分布不均匀；瞬态计算结果表明：相较于开式流路，闭式回路入流畸变带来流场压力、速度、湍动能、压力脉动等特性的变化，导致泵体扬程、效率均有所下降，所受径向力、轴向力增大。闭式循环回路架构针对主泵流动性能的分析更接近真实流动。
- 核主泵 /
- 闭式循环 /
- 源项法 /
- 入流畸变 /
- 数值模拟
Abstract: The traditional main pump flow analysis platform is mostly a simplified open flow path, which is quite different from the real closed loop operation conditions. In order to explore the flow characteristics and mechanism of the main pump in the real loop, this paper takes the full-channel hydraulic model of the main pump with seal ring clearance as the research object, and uses the source term method for steady-state and transient calculation and analysis. The steady-state calculation results show that the vortex flow pattern is formed in the closed circulation loop, which leads to pre-swirl at the inlet of the main pump and inflow distortion, resulting in the increase of turbulent kinetic energy and uneven energy distribution. The transient calculation results show that compared with the open flow path, the inflow distortion of the closed loop brings changes in the characteristics of flow field pressure, velocity, turbulent kinetic energy and pressure fluctuation, which leads to the decrease of pump head and efficiency and the increase of radial force and axial force. The analysis of the flow performance of the main pump based on the closed loop structure is closer to the real flow.
- Nuclear main pump /
- Closed circulation /
- Source term method /
- Inflow distortion /
- Numerical simulation

HTML全文

图 1 核主泵全三维开式流路模型

Figure 1. 3D Open Flow Path Module of Nuclear Main Pump

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图 2 闭式循环回路模型

Figure 2. Closed Circulation Loop Model

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图 3 核主泵各模型网格划分图

Figure 3. Meshing of Models of Nuclear Main Pump

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图 4 数值计算与实验结果的对比验证

Q_d—额定流量

Figure 4. Comparison and Verification between Numerical Calculation and Experimental Results

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图 5 主泵入口流线图

Figure 5. Streamline of Inlet of Main Pump

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图 6 不同工况湍动能对比

Figure 6. Comparison of Turbulent Kinetic Energy under Different Conditions

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图 7 0.8Q_d、Q_d和1.1Q_d工况下叶轮压力、湍动能云图

Figure 7. Cloud Chart of Pressure and Turbulence Kinetic Energy of Impeller at 0.8Q_d、Q_d and 1.1Q_d Conditions

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图 8 0.8Q_d、Q_d和1.1Q_d工况下叶轮流速图

Figure 8. Velocity of Impeller at 0.8Q_d、Q_dand 1.1Q_d Conditions

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图 9 监测点M1压力脉动特性

Figure 9. Pressure Pulsation Characteristics of Monitoring Point M1

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图 10 叶轮受力示意图

Figure 10. Schematic Diagram of Impeller Stress

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图 11 不同工况下叶轮轴向力对比图

Figure 11. Comparison of Axial Force of Impeller under Different Conditions

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图 12 0.8Q_d、Q_d和1.1Q_d工况下径向力

Figure 12. Radial Forces under 0.8Q_d, Q_d and 1.1Q_d Conditions

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表 1 网格信息汇总表

Table 1. Grid Information Summary

方案	网格总数/万	叶轮网格数/万	导叶网格数/万	压水室网格数/万	蒸汽发生器网格数/万	扬程/m	效率/%
1	455.59	79.96	150.89	90.59	100.98	16.38	79.02
2	625.88	157.89	180.98	135.99	120.78	17.14	80.13
3	826.59	192.45	200.65	160.29	189.75	17.25	80.28

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