排灌机械工程学报
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排灌机械工程学报  2013, Vol. 31 Issue (4): 335-339    DOI: 10.3969/j.issn.1674-8530.2013.04.012
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液流旋启式止回阀关闭动态特性数值模拟
 李树勋, 侯英哲, 李连翠 周世豪
(1.兰州理工大学石油化工学院, 甘肃 兰州 730050; 2.机械工业泵及特殊阀门工程研究中心, 甘肃 兰州 730050)
Numerical simulation on dynamic characteristic of closing process of flow swing check valve
 LI  Shu-Xun, HOU  Ying-Zhe, LI  Lian-Cui- Zhou-Shi-Hao
(1.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2.Machinery Industry Pump and Special Valve Engineering Research Center, Lanzhou, Gansu 730050, China)
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摘要 针对旋启式止回阀关闭时出现的水击现象,采用计算流体动力学(CFD)方法,建立了阀瓣的运动方程和二维几何模型,以连续性方程、雷诺平均N-S方程和基于各向同性涡黏性理论的k-ε方程组成旋启式止回阀内部流动数值模拟的控制方程组,借助Fluent软件提供的计算方法和物理模型,利用动网格及其UDF编程(用户自定义函数)技术,对普通和改进后2种模型的关闭过程进行非定常流动的二维数值模拟计算,获得了阀门内部流场的压力场图、速度矢量图、压力曲线图以及速度曲线图.结果表明:原模型在关闭过程中会出现大幅度的波动,而改进后的止回阀只出现小幅度的波动,突变的发生率减小,流动更加稳定,流通能力提高,流体对阀瓣的冲击以及局部的能量损耗降低.研究结果为分析阀门关闭时的水击现象提供了依据.
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李树勋
侯英哲
李连翠 周世豪
关键词旋启式止回阀   关闭过程   动网格   水击现象   数值模拟     
Abstract: Regarding the water hammer phenomenon in closing swing check valve, by applying computational fluid dynamics(CFD) method, a motion equation of valve clack and the 2D geometric model were built; with the control equations composed of continuity equation, Reynolds average N-S equations and the k-ε turbulence model based on the theory of isotropic eddy viscosity, by using Fluentbased calculation methods and physical models, dynamic mesh and UDF in closing two kinds of swing check valve, twodimensional numerical simulation of the internal unsteady flow was performed. From the simulation, the pressure field, velocity vector, pressure curve and velocity curve of the internal unsteady flow were obtained. The results show that, in closing, the original model fluctuated; while the modified model fluctuated slightly, reducing the possibility of sudden changes; the internal flow field became more stable and the flow capacity was improved, the impact of the fluid on valve clack and local energy loss were decreased. The research can be an important reference for swing check valve design and helpful in optimizing valve design.
Key wordsswing check valve   closing process   dynamic mesh   water hammer phenomena   numerical simulation   
收稿日期: 2012-10-31; 出版日期: 2013-04-30
基金资助:

兰州理工大学“优秀青年教师培养计划”资助项目(Q201002); 科技部科技人员服务企业行动资助项目(2009GJG10005)

通讯作者: 侯英哲(1989—),男,河北邯郸人,硕士研究生(shang1989@hotmail.com),主要从事阀门技术与流场优化研究.   
作者简介: 李树勋(1973—),男,陕西榆林人,副教授(gdlishuxun@126.com),主要从事自力式控制类阀门及其配套技术研究.
引用本文:   
李树勋,侯英哲,李连翠 周世豪. 液流旋启式止回阀关闭动态特性数值模拟[J]. 排灌机械工程学报, 2013, 31(4): 335-339.
LI Shu-Xun,HOU Ying-Zhe,LI Lian-Cui- Zhou-Shi-Hao. Numerical simulation on dynamic characteristic of closing process of flow swing check valve[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(4): 335-339.
 
[1] Martin T. Dynamic simulation of check valve using CFD and evaluation of check valve model in RELAP5 [D]. Sweden:Department of Chemical Reaction of Technology, Chalmers University of Technology, 2011.
[2] 韩旭,周羽. 对冲式止回阀原理及启闭特性分析[J].核动力工程,2006,27(1):66-69.
Han Xu, Zhou Yu. Principle and openingclosing character analysis of DC check valve [J]. Nuclear Power Engineering, 2006,27(1):66-69.(in Chinese)
[3] Song Xueguan, Cui Lei, Park Y C. Threedimensional CFD analysis of springloaded pressure safety valve from opening to reclosure[C]//Proceedings of the ASME 2010 Pressure Vessels and Piping Division/KPVP Conference, PVP2010. Washington: ASME, 2010,5:295-303.
[4] Choi J W, Lee G, Kim M S. Numerical study on the steady state and transient performance of a multitype heat pump system[J]. International Journal of Refrigeration,2011, 34(2): 429-443.
[5] 巴鹏,皱长星,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 features during stopvalve′s opening or closing [J]. Journal of Vibration and Shock, 2010,29(10): 157-161. (in Chinese)
[6] 李树勋,徐登伟,李确,等.倒吊桶先导式蒸汽疏水阀的设计与数值模拟[J]. 排灌机械工程学报, 2012, 30(3):346-350. 浏览
Li Shuxun, Xu Dengwei, Li Que, et al. Design and numerical simulation of inverted bucket pilotoperated steam traps [J]. Journal of Drainage and Irrigation Machinery Engineering, 2012, 30(3):346-350.(in Chinese) 浏览
[7] Dallstream B E, Fricke B A, Bryan R B. Swing check valve design criteria and CFD validation[C]//Proceedings of the ASME 2006 International Conference on Nuclear Engineering. Florida: ASME,2006:691-699.
[8] 李贺军,蔡勇,向北平,等.梭式止回阀关闭时的流场特性研究[J].机械设计与制造,2012(6): 226-228.
[9] Li Hejun, Cai Yong, Xiang Beiping, et al. Study on flow field characteristics of shuttle check valves in shut process [J]. Machinery Design & Manufacture, 2012(6): 226-228. (in Chinese)
[10] 赵莹,周进.球阀流场的数值模拟与可视化研究[J].导弹与航天运载技术,2007(6): 35-39.
[11] Zhao Ying, Zhou Jin. Numerical simulation and visualization analysis of flow field in ball valve[J]. Missile and Space Vehcile, 2007(6): 35-39. (in Chinese)
[12] Ng Y T, Min C, Gibou F. Efficient fluidsolid coupling algorithm for singlephase flows [J]. Journal of Computational Physics, 2009,228(23): 8807-8829.
[13] 葛如海,王桃英,许栋,等.基于动网格和UDF技术的气缸动态特性研究[J].机床与液压,2010,38(21):12-15.
Ge Ruhai, Wang Taoying, Xu Dong, et al. Dynamic characteristics of pneumatic cylinder based on dynamic mesh and UDF [J]. Machine Tool & Hydraulics, 2010, 38(21):12-15. (in Chinese)
[14] 杨国来,伍国果,刘小熊,等.轴流式止回阀的数值模拟[J].西华大学学报:自然科学版,2012, 31(3): 97-100.
Yang Guolai, Wu Guoguo, Liu Xiaoxiong, et al. Numerical simulation for axial flow check valves[J]. Journal of Xihua University: Natural Science, 2012,31(3): 97-100. (in Chinese)
[15] 朱奇,谷传纲,戴韧.超超临界百万千瓦汽轮机主调阀流场非稳态数值研究[J].动力工程学报,2010,30(10):744-748.
Zhu Qi, Gu Chuangang, Dai Ren. Numerical simulation on unsteady flow field in the main stop and control valve system of a 1000 MW ultrasupercritical steam turbine [J]. Journal of Chinese Society of Power Engineering, 2010, 30(10):744-748. (in Chinese)
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