小流量工况泵阀耦合系统失稳机理研究

摘要
图/表
参考文献(36)
相关文章 (15)

全文: PDF (2299 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要在实际应用中，当泵阀耦合系统在小流量偏工况下运行时，系统容易发生流动失稳，并伴有剧烈的结构振动，严重时影响系统的可靠性。本文基于动网格和滑移网格技术，对泵阀耦合系统在小流量工况下的非稳态流致激励特性进行了数值模拟，并进行了试验验证。结果表明：由于离心泵导叶区域的周期性堵塞，流场内部出现低频压力脉动；离心泵的出口压力波动直接影响阀瓣所受流体力，导致弹簧止回阀发生颤振现象；阀瓣运动过程中，阀杆处的节流作用是引起泵阀耦合系统流量脉动的主要原因。综上分析表明离心泵和弹簧止回阀之间存在强烈的耦合作用，该研究可为泵阀系统耦合设计与优化提供理论指导。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	于涛1
	率志君1
	王曦1
	简洁1
	李玩幽1
	姜晨醒2
	肖颀3

关键词 ：离心泵, 弹簧止回阀, 泵阀耦合系统, 流致激励

Abstract：In practical applications, when the system is operating at low flow rate, the pump-valve system is prone to instability along with severe structural vibration, which affects system reliability in serious cases. The unsteady excitations of the pump-valve coupling system in low flow rate are studied by using dynamic grid and sliding grid technology, and validated by experiments. Research shows that due to the periodic blockage of the guide vane area, low-frequency pressure pulsation appears. The movement and force of the valve disc are emphasized, and it showed that the pressure fluctuation of the outlet directly affects the fluid force on the valve disc, making it to flutter. The throttling effect at the hollow stem is the main cause of flow pulsation in the pump-valve coupling system. The above analysis shows that there is a strong coupling effect between the centrifugal pump and the spring check valve. This research can provide theoretical guidance for the design and optimization of the pump-valve coupling system.

Key words： Centrifugal pump Spring check valve Pump-valve coupling system Flow-induced force

收稿日期: 2021-11-08 出版日期: 2023-02-28

引用本文:

于涛1，率志君1，王曦1，简洁1，李玩幽1，姜晨醒2，肖颀3. 小流量工况泵阀耦合系统失稳机理研究[J]. 振动与冲击, 2023, 42(4): 137-144.
YU Tao1，SHUAI Zhijun1，WANG Xi1，JIAN Jie1，LI Wanyou1，JIANG Chenxing2，XIAO Qi3. A study on instability mechanism of a pump-valve coupling system in low flow rate. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(4): 137-144.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I4/137

[1] 刘帅. 基于动网格技术的止回阀流动特性分析[D]. 哈尔滨: 哈尔滨工程大学, 2017.
LIU Shuai. Study on Flow Field Characteristics of Check Valve[D]. Harbin: Harbin Engineering University, 2017.
[2] David F. A Review of Vibration Problems in Power Station Boiler Feed Pumps[J]. Rotordynamic Instability Problems in High-Performance Turbomachinery, 1994: 249-276.
[3] 潘中永, 李俊杰, 李晓俊, 等. 斜流泵不稳定特性及旋转失速研究[J]. 农业机械学报, 2012, 43(5): 64-68.
PAN Zhongyong, LI Junjie, LI Xiaojun, et al. Performance Curve Instability and Rotating Stall[J]. Transactions of the Chinese Society of Agricultural Machinery, 2012, 43(5): 64-68.
[4] 张磊, 王松岭, 胡晨星. 叶轮机械旋转失速研究进展[J]. 热力发电, 2014, 43(1): 1-5.
ZHANG Lei, WANG Songling, HU Chenxing. Research Progress of Rotating Stall in Turbomachinery[J]. Thermal Power Generation, 2014, 43(1): 1-5.
[5] Cheah K W, Lee T S, Winoto S H, et al. Numerical Flow Simulation in a Centrifugal Pump at Design and Off-Design Conditions[J]. International Journal of Rotating Machinery, 2007: 1-8.
[6] 许斌杰, 李志峰, 吴大转, 等. 离心泵启动过程瞬态湍流流动的数值模拟研究[J].中国科技论文在线, 2010, 5(9): 683-687.
XU Binjie, LI Zhifeng, WU Dazhuan, et al. Numerical Simulation for Transient Turbulence Flow of Centrifugal Pump during Starting Period[J]. China Science Paper, 2010, 5(9): 683-687.
[7] 贾晓奇. 离心泵内不稳定流动及振动特性研究[D]. 浙江大学, 2017.
JIA Xiaoqi. Investigation on Unstable Flow and Vibration Characteristics of a Centrifugal Pump[D]. Zhejiang: Zhejiang University, 2017.
[8] 阳君. 带导叶离心泵非定常流动对特性曲线驼峰的影响[D]. 江苏大学, 2014.
YANG Jun. Flow Patterns Causing Saddle Instability in the Performance Curve of a Centrifugal Pump with Vaned Diffuser[D]. Jiangsu: Jiangsu University, 2014.
[9] 周佩剑. 离心泵失速特性研究[D]. 中国农业大学, 2015.
ZHOU Peijian. Investigation of Stall Characteristics in Centrifugal Pumps[D]. Beijing: China Agricultural University, 2015.
[10] 周佩剑, 王福军, 姚志峰. 旋转失速条件下离心泵隔舌区动静干涉效应[J]. 农业工程学报, 2015, 31(7): 85-90.
ZHOU Peijian, Wang Fujun, YAO Zhifeng. Impeller-Volute Interaction Around Tongue Region in Centrifugal Pump under Rotating Stall Condition[J]. Transactions of the Chinese Society of Agricultural Engineering, 2015, 31(7): 85-90.
[11] 瞿丽霞, 王福军, 丛国辉, 等. 双吸离心泵叶片区压力脉动特性分析[J]. 农业机械学报, 2011, 42(9): 79-84.
QU Lixia, WANG Fujun, CONG Guohui, et al. Pressure Fluctuations of the Impeller in a Double-Suction Centrifugal Pump[J]. Transactions of the Chinese Society of Agricultural Machinery, 2011, 42(9): 79-84.
[12] Sano T, Yoshida Y, Tsujimoto Y, et al. Numerical Study of Rotating Stall in a Pump Vaned Diffuser[J]. Journal of Fluids Engineering, 2002, 124(06): 363-370.
[13] 王鹏超. 止回阀关阀特性对管道瞬态水动力学参数影响研究[D]. 兰州理工大学, 2019.
WANG Pengchao. Study on the Influence of Check Valve Closing Characteristics on the Transient Hydrodynamic Parameters of Pipes[D]. Lanzhou: Lanzhou University of Technology, 2019.
[14] 闵为, 王东, 郑直, 等. 压力调节锥阀开启过程振动特性研究[J]. 振动与冲击, 2020, 39(18): 181-187.
MIN Wei, WANG Dong, ZHENG Zhi, et al. Vibration Characteristics of a Pressure Regulating Poppet Valve during Opening Process[J]. Journal of Vibration and Shock, 2020, 39(18): 181-187.
[15] 巴鹏, 邹长星, 陈卫丹. 截止阀启闭时流动特征的动态数值模拟[J]. 振动与冲击, 2010, 29(10): 157-161.
BA Peng, ZOU Changxing, CHEN Weidan. Dynamic Numerical Simulation of Flow Characteristics of Globe Valves during Opening and Closing[J]. Journal of Vibration and Shock, 2010, 29(10): 157-161.
[16] Hős C J, Champneys A R, Paul K, et al. Dynamic Behaviour of Direct Spring Loaded Pressure Relief Valves Connected to Inlet Piping: IV Review and Recommendations[J]. Journal of Loss Prevention in the Process Industries, 2017, 48: 270-288.
[17] Bazsó C, Hős C J. An Experimental Study on the Stability of a Direct Spring Loaded Poppet Relief Valve[J]. Journal of Fluids and Structures, 2013, 42: 456-465.
[18] 张伟涛. 轴流式止回阀阀瓣瞬态压力分布与冲击分析[D]. 兰州: 兰州理工大学, 2014.
ZHANG Weitao. The Transient Pressure Distribution and Impact Analysis of Axial Check Valve[D]. Lanzhou: Lanzhou University of Technology, 2014.
[19] 刘华坪, 陈浮, 马波. 基于动网格与UDF技术的阀门流场数值模拟[J]. 汽轮机技术, 2008, 50(02): 106-108.
LIU Huaping, CHEN Fu, MA Bo. Numerical Simulation of Flow Field in the Valve Based on the Moving Mesh and the UDF[J]. Turbine Technology, 2008, 50(02): 106-108.
[20] Botros K K. Spring Stiffness Selection Criteria for Nozzle Check Valves Employed in Compressor Stations[J]. Journal of Engineering for Gas Turbines and Power, 2011, 133(12): 1-11.
[21] Qian J Y, Wei L, Jin Z J, et al. CFD Analysis on the Dynamic Flow Characteristics of the Pilot-Control Globe Valve[J]. Energy Conversion and Management, 2014, 87: 220-226.
[22] 李诗徉. 基于循环平稳和数值模拟的泵阀动特性研究与改进设计[D]. 浙江大学, 2018.
LI Shiyang. Research and Improved Design of Dvnamic Characteristics of Pumps and Valves Based on Cvclostationaritv and Numerical Simulation[D]. Zhejiang: Zhejiang University, 2018.
[23] 赖周年. 并联泵系统工况调节过程的优化与控制[D]. 浙江大学, 2017.
LAI Zhounian. Optimization and Control of a Parallel Pump System during Operating Regulations[D]. Zhejiang: Zhejiang University, 2017.
[24] 郭宪军, 陈红勋, 朱兵. 离心泵启动过程的数值模拟[J]. 上海大学学报(自然科学版), 2012, 18(3): 288-292.
GUO Xianjun, CHEN Hongxun, ZHU Bing. Numerical Simulation for Centrifugal Pump during Starting Period[J]. Journal of Shanghai University (Natural Science), 2012, 18(3): 288-292.
[25] 吴大转, 许斌杰, 李志峰, 等. 离心泵瞬态操作条件下内部流动的数值模拟[J]. 工程热物理学报, 2009, 30(5): 781-783.
WU Dazhuan, XU Binjie, LI Zhifeng, et al. Numerical Simulation on Internal Flow of Centrifugal Pump during Transient Operation[J]. Journal of Engineering Thermophysics, 2009, 30(5): 781-783.
[26] 刘竹青, 朱强, 杨魏, 等. 双吸离心泵关阀启动过程的瞬态特性研究[J]. 农业机械学报, 2015, 46(10): 44-48.
LIU Zhuqing, ZHU Qiang, YANG Wei, et al. Transient Characteristics of Double-Suction Centrifugal Pump during Starting Period under Shut-off Condition[J]. Transactions of the Chinese Society of Agricultural Machinery, 2015, 46(10): 44-48.
[27] 张玉良. 离心泵启动过程的瞬态内流和外特性[D]. 浙江: 浙江大学, 2013.
ZHANG Yuliang. Transient Internal Flow and Performance of Centrifugal Pumps During Startup Period[D]. Zhejiang: Zhejiang University, 2013.
[28] 李志峰. 离心泵启动过程瞬态流动的数值模拟和实验研究[D]. 浙江: 浙江大学, 2009.
LI Zhifeng. Numerical Simulation and Experimental Study on the Transient Flow in Centrifugal Pump during Starting Period[D]. Zhejiang: Zhejiang University, 2009.
[29] 杨帅. 基于MOC-CFD耦合方法的泵送系统瞬态特性研究[D]. 浙江: 浙江大学, 2015.
YANG Shuai. Investigation on the Transient Characteristics of the Pump System using MOC-CFD Coupled Method[D]. Zhejiang: Zhejiang University, 2015.
[30] 刘巧玲. 离心泵系统特性的一维与三维瞬态耦合数值模拟研究[D]. 浙江: 浙江大学, 2013.
LIU Qiaoling. Investigation on 1D/3D Coupling Simulation on Pump System during Transient Process[D]. Zhejiang: Zhejiang University, 2013.
[31] Yakhot V, Orszag S A. Renormalization Group Analysis of Turbulence. I. Basic theory[J]. Journal of Scientific Computing, 1986, 1(1): 3-51.
[32] 张宁, 杨敏官, 高波, 等. 侧壁式压水室离心泵小流量非稳态旋转失速特性[J].振动与冲击, 2015, 34(06): 189-194.
ZHANG Ning, YANG Minguan, GAO Bo, et al. Unsteady Rotating Stall Characteristics in a Centrifugal Pump with Slope Volute at Low Flow Rates[J]. Journal of Vibration and Shock, 2015, 34(06): 189-194.
[33] 张伟, 余运超, 陈红勋. 离心泵叶轮非设计工况下内部湍流流场的模拟[J]. 排灌机械工程学报, 2010, 28(01): 38-42.
ZHANG Wei, YU Yunchao, CHEN Hongxun. Numerical Simulation of Flow in Centrifugal Pump Impeller at Off-Design Conditions[J]. Journal of Drainage and Irrigation Machinery Engineering, 2010, 28(01): 38-42.
[34] 焦喜娟. V型阀口参数化设计与流场仿真研究[D]. 兰州理工大学, 2018.
JIAO Xijuan. Parameterized Design of V-Shaped Valve Port and Flow Field Simulation[D]. Lanzhou: Lanzhou University of Technology, 2018.
[35] 张晓俊. 液压滑阀内部流场可视化仿真研究及试验测试[D]. 太原理工大学, 2016.
ZHANG Xiaojun. Visualized Simulation Research and Experiment Test on the Internal Flow Field of Hydraulic Slide Valve[D]. Taiyuan: Taiyuan University of Technology, 2016.
[36] 谭林伟. 单叶片离心泵非定常流动特性及诱导径向力的数值模拟与实验研究[D]. 江苏大学, 2018.
TAN Linwei. Numerical and Experimental Investigations on the Unsteady Flow Characteristics and Induced Radial Force of Single Blade Centrifugal Pumps[D]. Jiangsu: Jiangsu University, 2018.