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http://dx.doi.org/10.1016/j.net.2020.08.007

Research on non-uniform pressure pulsation of the diffuser in a nuclear reactor coolant pump  

Zhou, Qiang (School of Mechanical Engineering, Dalian University of Technology)
Li, Hongkun (School of Mechanical Engineering, Dalian University of Technology)
Pei, Lin (Research Institute, Shenyang Blower Works Group Co., Ltd)
Zhong, Zuowen (Shenyang Blower Works Group Nuclear Pump Co., Ltd)
Publication Information
Nuclear Engineering and Technology / v.53, no.3, 2021 , pp. 1020-1028 More about this Journal
Abstract
The nuclear reactor coolant pump transferring heat energy inherently brings with it the unsteady flow and inevitably threatens to the safe operation of the pump unit, especially with the pressure pulsation induced by the rotor-stator interaction. In this paper, the characteristics of pressure pulsation of the diffuser in a nuclear reactor coolant pump were investigated by the numerical simulation with experimental validation. Pressure pulsation signals measured synchronously from sensors mounted on the radial diffuser of a model pump were analyzed via Welch's method. Frequency components induced by the rotor-stator interaction can be revealed by the diameter mode analysis method. The pressure pulsation of the diffuser is dominated by the blade passing frequency and its harmonics, which are free from the effect of flow rate and rotational speed while the corresponding amplitudes are easily affected by different operational conditions and measuring positions. The non-uniformity is much more affected by the rotational speed than the flow rate. This research is helpful for further work to reduce the pressure pulsation for the reactor coolant pump.
Keywords
Nuclear reactor coolant pump; Rotor stator interaction; Pressure pulsation; Diffuser;
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1 R. Barrio, J. Parrondo, E. Blanco, Numerical analysis of the unsteady flow in the near-tongue region in a volute-type centrifugal pump for different operating points, Comput. Fluid 39 (5) (2010) 859-870.   DOI
2 Fujun Wang, Research progress of computational model for rotating turbulent flow in fluid machinery, Trans. Chin. Soc. Agric. Mach. 47 (2016) 1-14, 02.
3 A. Posa, A. Lippolis, Effect of working conditions and diffuser setting angle on pressure fluctuations within a centrifugal pump, Int. J. Heat Fluid Flow 75 (2019) 44-60.   DOI
4 Y. Han, L. Tan, Dynamic mode decomposition and reconstruction of tip leakage vortex in a mixed flow pump as turbine at pump mode, Renew. Energy 155 (2020) 725-734.   DOI
5 D. Li, R. Gong, H. Wang, et al., Numerical investigation on transient flow of a high head low specific speed pump-turbine in pump mode, J. Renew. Sustain. Energy 7 (6) (2015) 63111.   DOI
6 J. Pei, W. Wang, G. Pavesi, et al., Experimental investigation of the nonlinear pressure fluctuations in a residual heat removal pump, Ann. Nucl. Energy 131 (2019) 63-79.   DOI
7 X. Zhang, P. Wang, X. Ruan, et al., Analysis of pressure pulsation induced by rotor-stator interaction in nuclear reactor coolant pump, Shock Vib. 2017 (2017) 1-18.
8 D. Ni, M. Yang, B. Gao, et al., Flow unsteadiness and pressure pulsations in a nuclear reactor coolant pump, J. Mech. Eng. 62 (4) (2016) 231-242.   DOI
9 Z. Ye, W. Xiao-Fang, Z. Guang, et al., Numerical Analysis of Pressure Fluctuations Caused by Impeller-Diffuser Interaction in a Mixed Flow Reactor Coolant Pump, IEEE, 2011.
10 P.D. Welch, The use of fast Fourier transform for the estimation of power spectra: a method based on time averaging over short, modified periodo-grams, IEEE Trans. Audio Electroacoust. 15 (2) (1967) 70-73.   DOI
11 G. Pavesi, G. Cavazzini, G. Ardizzon, Time-frequency characterization of the unsteady phenomena in a centrifugal pump, Int. J. Heat Fluid Flow 29 (5) (2008) 1527-1540.   DOI
12 Y. Kubota, T. Suzuki, H. Tomita, et al., Vibration of rotating bladed disc excited by stationary distributed forces, Bull. JSME 26 (221) (1983) 1952-1957.   DOI
13 P. Spalart, S. Allmaras, A One-Equation Turbulence Model for Aerodynamic Flows, American Institute of Aeronautics and Astronautics, 1992.
14 N. Zhang, M. Yang, B. Gao, et al., Investigation on rotor-stator interaction in a low specific speed centrifugal pump, Symposia, Part 2. Seoul, South Korea, in: Proceedings of the ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, 1A, July 26-31, 2015. V01AT33A012.
15 Z. Yao, F. Wang, L. Qu, et al., Experimental investigation of time-frequency characteristics of pressure fluctuations in a double-suction centrifugal pump, J. Fluid Eng. 133 (10) (2011).
16 S. Guo, Y. Maruta, Experimental investigations on pressure fluctuations and vibration of the impeller in a centrifugal pump with vaned diffusers, JSME Int. J. Ser. B 48 (1) (2005) 136-143.   DOI
17 N. Zhang, M. Yang, B. Gao, et al., Experimental investigation on unsteady pressure pulsation in a centrifugal pump with special slope volute, J. Fluid Eng. 137 (6) (2015).
18 C. De, Y. Zhen-Qiang, X. Ya-bo, S. Hong, Numerical study on seismic response of the reactor coolant pump in advanced passive pressurized water reactor, Nucl. Eng. Des. 278 (2014) 39-49.   DOI
19 X. Wang, Y. Lu, R. Zhu, et al., Experimental study on transient characteristics of reactor coolant pump under rotor seizure accident, Ann. Nucl. Energy 136 (2020) 107039.   DOI
20 Desheng Zhang, Haiyu Wang, Weidong Shi, et al., Experimental investigation of pressure fluctuation with multiple flow rates in scaled axial flow pump, Trans. Chin. Soc. Agric. Mach. 45 (11) (2014) 139-145 (in Chinese with English abstract).
21 W. Wang, J. Pei, S. Yuan, et al., Experimental investigation on clocking effect of vaned diffuser on performance characteristics and pressure pulsations in a centrifugal pump, Exp. Therm. Fluid Sci. 90 (2018) 286-298.   DOI
22 D. Ni, N. Zhang, B. Gao, et al., Dynamic measurements on unsteady pressure pulsations and flow distributions in a nuclear reactor coolant pump, Energy 198 (2020) 117305.   DOI
23 R. Xu, Y. Long, D. Wang, Effects of rotating speed on the unsteady pressure pulsation of reactor coolant pumps with steam-generator simulator, Nucl. Eng. Des. 333 (2018) 25-44.   DOI
24 G. Cavazzini, G. Pavesi, G. Ardizzon, Pressure instabilities in a vaned centrifugal pump, Proc. IME J. Power Energy 225 (7) (2011) 930-939.   DOI
25 Y.-J. Cho, Y.-S. Kim, S. Cho, S. Kim, Y. Kim, J. Park, B. Kim, Advancement of reactor coolant pump (RCP) performance verification test in KAERI, in: 2014 22nd International Conference on Nuclear Engineering, 2014.
26 C.E. Brennen, Hydrodynamics of Pumps, Concepts ETI Inc., Oxford Science Publications, 1994.
27 H.-H. Sun, P.-D. Cheng, H.-X. Miao, The Third Generation of Nuclear Power Technology AP1000, China Electric Power Press, Beijing, 2010.
28 F.M. Zhou, X.F. Wang, The effects of blade stacking lean angle to 1400 MW canned nuclear coolant pump hydraulic performance, Nucl. Eng. Des. 325 (2017) 232-244.   DOI
29 Y. Long, D. Wang, J. Yin, et al., Experimental investigation on the unsteady pressure pulsation of reactor coolant pumps with non-uniform inflow, Ann. Nucl. Energy 110 (2017) 501-510.   DOI
30 D. Ni, M. Yang, B. Gao, et al., Experimental and numerical investigation on the pressure pulsation and instantaneous flow structure in a nuclear reactor coolant pump, Nucl. Eng. Des. 337 (2018) 261-270.   DOI
31 Y. Liu, L. Tan, Spatialetemporal evolution of tip leakage vortex in a mixed-flow pump with tip clearance, J. Fluid Eng. 141 (8) (2019).
32 Y. Liu, L. Tan, Theoretical prediction model of tip leakage vortex in a mixed flow pump with tip clearance, J. Fluid Eng. 142 (2) (2020).
33 H. Tanaka, Vibration behavior and dynamic stress of runners of very high head reversible pump-turbines, Int. J. Fluid Mach. Syst. 4 (2) (2011) 289-306.   DOI
34 Zhipeng Feng, Fulei Chu, Transient hydraulic pressure fluctuation signal analysis of hydroturbine based on Hibert-Huang transform, Proc. Chin. Soc. Electr. Eng. (10) (2005) 111-115 (in Chinese with English abstract).   DOI
35 X. Wang, Y. Lu, R. Zhu, et al., Study on pressure pulsation characteristics of reactor coolant pump during the idling transition process, J. Vib. Contr. 25 (18) (2019) 2509-2522.   DOI
36 X. Zhang, P. Wang, X. Ruan, et al., Analysis of pressure pulsation induced by rotor-stator interaction in nuclear reactor coolant pump, Shock Vib. 2017 (2017) 1-18.