动态流量平衡阀启闭过程中的线弹性不等值力

李树勋; 徐娟娟; 范宜霖; 徐晓刚; 叶琛

doi:10.3969/j.issn.0258-2724.2015.06.025

动态流量平衡阀启闭过程中的线弹性不等值力

doi: 10.3969/j.issn.0258-2724.2015.06.025

基金项目:

国家自然科学基金资助项目(51349008)

甘肃省高校基本业务费资助项目(20146302)

详细信息

作者简介:
李树勋(1973-),男,教授,研究方向为控制类阀门,E-mail:gdlishuxun@126.com

计量
- 文章访问数: 646
- HTML全文浏览量: 67
- PDF下载量: 340
- 被引次数: 0
出版历程
- 收稿日期: 2014-12-11
- 刊出日期: 2015-12-25

Linear Elastic Nonequivalence Force for Dynamic Flow Balance Valve in Opening and Closing Process

摘要

摘要: 为了解决动态流量平衡阀流量控制精度无法达到要求的问题,建立了动态流量平衡阀动力学模型以及阀芯运动方程,数值模拟了相同口径和不同口径平衡阀阀芯处于不同位移下的三维流场模型,对比试验与数值模拟的阀芯位移误差和压差位移流量特性曲线,获得了线弹性不等值力变化规律,确定了不等值力修正系数,并优化了开孔型线.研究结果表明:通过引入线弹性不等值力修正系数,优化阀芯可变开孔后,减小了阀芯实际位移与理论位移间的误差,使试验与数值模拟的流量特性曲线趋于一致,并使流量控制精度满足5%的误差要求.
- 平衡阀 /
- 线弹性不等值力 /
- 流量控制精度 /
- 数值模拟
Abstract: In order to solve the problem that the flow rate control of a dynamic flow balance valve cannot meet the precision requirement, a dynamic model for the balance valve and the motion equation of the valve core were developed. Then, the three-dimensional flow model of the valve core with the same diameter and different diameters, both under different displacements, were solved by numerical simulation. Through comparisons in terms of the displacement error and the flow characteristic curve between the actual test and numerical simulation, the variation rule and correction factor of the linear elastic nonequivalence force were obtained, and the opening profile line was optimized. The results show that after the variable opening of the valve core is optimized by the correction factor of linear elastic nonequivalence force, the displacement error of the valve core between test and theory is reduced; the flow characteristic curve obtained by numerical simulation is consistent with the one obtained by actual test, and the flow control precision can satisfy the error requirement of less than 5%.
- balance valve /
- linear elastic nonequivalence force /
- flow rate control /
- numerical simulation

HTML全文

参考文献(15)

AVERY G. Balancing and control valve sizing for direct-return, variable-flow hydronic systems[R]. Buffalo Grove: Siemens Industry Inc., 2006.

沈新荣,陆冰,李江莉,等. 一种自动流量平衡阀的数值分析及实验研究[J]. 液压与气动,2006(1): 56-58. SHEN Xinrong, LU Bing, LI Jiangli, et al. The numerical analysis and expermental investigation of automatic flux compensation valve[J]. Chinese Hydraulics and Pneumatics, 2006(1): 56-58.

李永业,孙西欢,李飞,等. 动边界同心环状缝隙流研究[J]. 农业机械学报,2012,43(3): 230-234. LI Yongye, SUN Xihuan, LI Fei, et al. Cyclical slit flow of concentricity under the moving boundary condition[J]. Transactions of the Chinese Society for Agricultural Machinery, 2012, 43(3): 230-234.

王悦. 一种新型流量平衡阀的数值模拟和实验研究[J]. 工业仪表与自动化装置,2012(6): 6-9. WANG Yue. The numerical simulation and experimental research of a new flow balance valve[J]. Industrial Instrumentation and Automation, 2012(6): 6-9.

袁士豪,殷晨波,刘世豪. 基于AMESim的平衡阀动态性能分析[J]. 农业机械学报,2013,44(8): 273-280. YUAN Shihao, YIN Chenbo, LIU Shihao. Working properties of counterbalance valve based on AMESim code[J]. Transactions of the Chinese Society for Agricultural Machinery, 2013, 44(8): 273-280.

叶奇昉,严诗杰,陈江平,等. 气动先导式磁阀的自激振动[J]. 机械工程学报,2010,46(1): 115-121. YE Qifang, YAN Shijie, CHEN Jiangpin, et al. Self-excited vibration in a pneumatic pilot-operated solenoid valve[J]. Journal of Mechanical Engineering, 2010, 46(1): 115-121.

李树勋,胡建华,李连翠,等. 先导式疏水阀阀芯组件动力特性分析[J]. 江苏大学学报:自然科学版,2013,34(6): 643-649. LI Shuxun, HU Jianhua, LI Liancui, et al. Dynamic characteristic analysis of a pilot-operated steam trap valve plug components[J]. Journal of Jiangsu University: Natural Science Edition, 2013, 34(6): 643-649.

沈新荣,李增珍,李江莉. 一种自动流量平衡阀的实验研究[J]. 流体机械,2006,34(11): 4-7. SHEN Xinrong, LI Zengzhen, LI Jiangli. Experimental investigation of an automatic flux compensation valve[J]. Fluid Machine, 2006, 34(11): 4-7.

SONG X G, CUI L, 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 D. C.: ASME, 2010: 295-303.

JONG W C, GILBONG L, MIN S K. 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.

侯英哲. 动态流量平衡阀优化研究及动态特性分析[D]. 兰州:兰州理工大学,2014.

陈晋市,刘昕晖,元万荣,等. 典型液压节流阀口的动态特性[J]. 西南交通大学学报,2012,47(2): 325-332. CHEN Jinshi, LIU Xinhui, YUAN Wanrong, et al. Dynamic characteristics of typical hydraulic notches[J]. Journal of Southwest Jiaotong University, 2012, 47(2): 325-332.

冯进,张慢来,黄天成. 安全阀水动力特性的CFD模拟及研究[J]. 核动力工程,2007,28(5): 32-35. FENG Jin, ZHANG Manlai, HUANG Tiancheng. Study on hydrodynamic characteristics of safety valve based on CFD caluculation[J]. Journal of Nuclear Power Engineering, 2007, 28(5): 32-35.

马玉山,相海军,傅卫平,等. 调节阀阀芯变开度振动分析[J]. 仪器仪表学报,2007,28(6): 1087-1092. MA Yushan, XIANG Haijun, FU Weiping, et al. Analysis of core vibration of regulating valve in regulation process[J]. Chinese Journal of Scientific Instrument, 2007, 28(6): 1087-1092.

马玉山,傅卫平,相海军,等.调节阀运动阀芯动态不平衡力分析[J]. 西安理工大学报,2009,25(2): 212-216. MA Yushan, FU Weiping, XIANG Haijun, et al. An analysis of dynamic imblance force for regulating valve in motion[J]. Journal of Xi'an University of Technology, 2009, 25(2): 212-216.

施引文献

附加材料(0)

访问统计

点击查看大图

计量

文章访问数: 646
HTML全文浏览量: 67
PDF下载量: 340
被引次数: 0

动态流量平衡阀启闭过程中的线弹性不等值力

doi: 10.3969/j.issn.0258-2724.2015.06.025

作者简介: 李树勋(1973-),男,教授,研究方向为控制类阀门,E-mail:gdlishuxun@126.com

计量

出版历程

Linear Elastic Nonequivalence Force for Dynamic Flow Balance Valve in Opening and Closing Process

计量

出版历程

目录

作者简介:
李树勋(1973-),男,教授,研究方向为控制类阀门,E-mail:gdlishuxun@126.com