| Citation: | ZENG Jilai, LIU Zailun, WU Xinrui, et al. Experiment of axial force control for centrifugal pump based on compensation trimming method[J]. Journal of Aerospace Power, 2023, 38（1）：206-214 doi: 10.13224/j.cnki.jasp.20220270
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To solve the key problem that trimming rear shroud of impeller balanced axial force could reduce the pump head and efficiency, a method to balance axial force by compensating rear shroud of impeller cut was proposed. On the same impeller, systematic measurements of the pump performance, tip clearance pressure, liquid pressure distribution in front and rear pump cavity and liquid pressure in balanced cavity were carried out with the research scheme of trimming rear shroud of impeller and compensating rear shroud of impeller. The experiment results showed that at the designed speed and flow rate, the relative trimming rates of rear shroud of impeller were 3.81%, 7.62% and 11.43%, respectively, the pump head was 3.52%, 6.41%, 9.93% lower than that of the prototype impeller, the efficiency was 2.97%, 4.59% and 6.18% lower than that of the prototype impeller, and the axial force was 8.02%, 20.57% and 22.3% lower than that of the prototype impeller. After compensating rear shroud of impeller trimming, the maximum drop of pump head was 4.18%, the maximum drop of efficiency was 2.7%, and the maximum drop of axial force was 83.1%. Compared with cutting rear shroud of impeller, compensating rear shroud of impeller trimming can increase the pressure of the front pump cavity and reduce the pressure of the rear pump cavity.
| [1] |
袁雪,张岩松,邱大明,等. 航空发动机转子轴向力动态特征测试技术[J]. 航空动力学报,2021,36(9): 1804-1810. doi: 10.13224/j.cnki.jasp.20210140
YUAN Xue,ZHANG Yansong,QIU Daming,et al. Test technique for dynamic characteristic of rotor axial force on aero-engine[J]. Journal of Aerospace Power,2021,36(9): 1804-1810. (in Chinese) doi: 10.13224/j.cnki.jasp.20210140
|
| [2] |
李嘉,李华聪,王淑红,等. 诱导轮与叶轮组合式航空燃油离心泵轴向力间隙补偿[J]. 航空动力学报,2016,31(11): 2765-2772. doi: 10.13224/j.cnki.jasp.2016.11.027
LI Jia,LI Huacong,WANG Shuhong,et al. Outlet clearance optimization on axial-force of inducer and impeller combination aero fuel centrifugal pump[J]. Journal of Aerospace Power,2016,31(11): 2765-2772. (in Chinese) doi: 10.13224/j.cnki.jasp.2016.11.027
|
| [3] |
张森,曾继来,张新民,等. 离心泵双密封环平衡系统泄漏特性预测方法研究[J]. 推进技术,2022,43(2): 198-206. doi: 10.13675/j.cnki.tjjs.200985
ZHANG Sen,ZENG Jilai,ZHANG Xinmin,et al. Leakage prediction method for double wear-rings balancing system of centrifugal pumps[J]. Journal of Propulsion Technology,2022,43(2): 198-206. (in Chinese) doi: 10.13675/j.cnki.tjjs.200985
|
| [4] |
关醒凡. 现代泵理论与设计[M]. 北京: 中国宇航出版社, 2011.
|
| [5] |
SHIMURA T,KAWASAKI S,UCHIUMI M,et al. Stability of an axial thrust self-balancing system[J]. Journal of Fluids Engineering,2013,135(1): 1-7.
|
| [6] |
QIAN C,LUO X,YANG C,et al. Multistage pump axial force control and hydraulic performance optimization based on response surface methodology[J]. Journal of the Brazilian Society of Mechanical Sciences and Engineering,2021,43(3): 1-14.
|
| [7] |
KIMURA T, KAWASAKI S, SHIMAGAKI M, et al. Effects of swirl brakes on the leakage flow between the casing and the shroud of a centrifugal impeller[C]// Proceedings of the ASME-JSME Joint Fluids Engineering Conference. Shizuoka: JSME, 2011: 1-8.
|
| [8] |
SHIMURA T,KAWASAKI S,UCHIUMI M,et al. Internal flow and axial thrust balancing of a rocket pump[J]. Journal of Fluids Engineering,2012,134(4): 1-8.
|
| [9] |
刘在伦,张森,邵安灿,等. 离心泵泵腔液体压力分布理论计算及验证[J]. 机械工程学报,2016,52(4): 178-184. doi: 10.3901/JME.2016.04.178
LIU Zailun,ZHANG Sen,SHAO Ancan,et al. Theoretical computation and verification for fluid static pressure in centrifugal pump side cavity[J]. Journal of Mechanical Engineering,2016,52(4): 178-184. (in Chinese) doi: 10.3901/JME.2016.04.178
|
| [10] |
刘在伦,孙雨,王东伟,等. 离心泵泵腔流道液体泄漏量试验与计算方法[J]. 农业机械学报,2015,46(6): 97-101. doi: 10.6041/j.issn.1000-1298.2015.06.015
LIU Zailun,SUN Yu,WANG Dongwei,et al. Experiment and calculation method of fluid leakage in flow passage of pump cavity on centrifugal pump[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(6): 97-101. (in Chinese) doi: 10.6041/j.issn.1000-1298.2015.06.015
|
| [11] |
刘在伦,许立中,贾晓,等. 离心泵浮动叶轮轴向间隙的液体流动分析及轴向力计算[J]. 农业工程学报,2013,44(12): 79-85. doi: 10.3969/j.issn.1002-6819.2013.12.011
LIU Zailun,XU Lizhong,JIA Xiao,et al. Analysis of liquid flow and axial force calculation in axial clearance for floating impeller of centrifugal pump[J]. Transactions of the Chinese Society of Agricultural Engineering,2013,44(12): 79-85. (in Chinese) doi: 10.3969/j.issn.1002-6819.2013.12.011
|
| [12] |
陆伟刚,李启锋,施卫东,等. 减小叶轮后盖板直径的轴向力试验[J]. 排灌机械,2008,26(1): 1-5,14.
LU Weigang,LI Qifeng,SHI Weidong,et al. Experimental for axial thrust of shortened impeller back shroud[J]. Drainage and Irrigation Machinery,2008,26(1): 1-5,14. (in Chinese)
|
| [13] |
SHI W D, ZHOU L, LU W G, et al. Numerical simulation and experimental study on deep-well centrifugal pump with small rear shroud diameter[J]. Advanced Materials Research. 2011, 354/355: 659-663.
|
| [14] |
ZHOU L,SHI W,LI W,et al. Numerical and experimental study of axial force and hydraulic performance in a deep-well centrifugal pump with different impeller rear shroud radius[J]. Journal of Fluids Engineering,2013,135(10): 1-8.
|
| [15] |
SHADAB M,KARIMIPOUR M,NAJAFI A F,et al. Effect of impeller shroud trimming on the hydraulic performance of centrifugal pumps with low and medium specific speeds[J]. Engineering Applications of Computational Fluid Mechanics,2022,16(1): 514-535. doi: 10.1080/19942060.2021.2016492
|
| [16] |
贾晓奇,聂小林,涂必成,等. 半开式离心泵变工况叶顶间隙的流动特性[J]. 农业工程学报,2015,31(4): 91-96. doi: 10.3969/j.issn.1002-6819.2015.04.013
JIA Xiaoqi,NIE Xiaolin,TU Bicheng,et al. Flow characteristics of blade tip clearance in semi-open centrifugal pump in variable condition[J]. Transactions of the Chinese Society of Agricultural Engineering,2015,31(4): 91-96. (in Chinese) doi: 10.3969/j.issn.1002-6819.2015.04.013
|
| [17] |
卢金玲,郭蕾,王李科,等. 半开叶轮离心泵叶顶间隙非定常流动特性研究[J]. 农业机械学报,2019,50(6): 163-172. doi: 10.6041/j.issn.1000-1298.2019.06.018
LU Jinling,GUO Lei,WANG Like,et al. Unsteady flow characteristics of tip clearance in semi-open impeller centrifugal pump[J]. Transactions of the Chinese Society for Agricultural Machinery,2019,50(6): 163-172. (in Chinese) doi: 10.6041/j.issn.1000-1298.2019.06.018
|
| [18] |
DONG W,CHU W L. Numerical investigation of the fluid flow characteristics in the hub plate crown of a centrifugal pump[J]. Chinese Journal of Mechanical Engineering,2018,31(1): 1-10.
|
| [19] |
ZENG J L,LIU Z L,HUANG Q,et al. Research on the modified mathematical prediction model of impeller cover side cavity liquid pressure for centrifugal pumps[J]. Journal of Applied Fluid Mechanics,2022,15(3): 673-685.
|
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