基于浮片式单向阀的电磁泵流量特性优化设计
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摘要
针对一种新型直驱电磁泵应用单向阀配流时遇到的流量瓶颈问题,研究单向阀对直驱电磁泵整体流量特性的影响规律,并对单向阀关键参数进行优化设计。利用计算机仿真技术,建立电磁泵系统流场瞬态仿真模型。在FLUENT软件中采用了SST k-ω湍流模型,UDF(用户自定义函数)和动网格技术,分析研究了泵的速度场分布情况以及单向阀的运动规律,并利用正交实验设计的方法研究单向阀行程、质量参数对泵流量特性的影响。通过仿真与试验分析研究表明,通过匹配单向阀参数能够有效提升电磁泵的流量特性,单向阀采用最佳匹配方案时电磁泵的净输出流量与初始设计相比提高了33.1%。通过上述研究,为直驱电磁泵的优化设计提供参考。
Aiming at the flow bottleneck of a new direct drive electromagnetic pump applying check valves, the influence of check valves on the direct drive electromagnetic pump flow characteristics was studied, and the key parameters of the pump system were optimized. The transient simulation of the electromagnetic pump system was established using computer simulation technology. Numerical simulation and experimental verification were applied to velocity field distribution of the pump and the motion law of the check valve using FLUENT software which adopts SST k-ω turbulent model, UDF(User Define Functions) and dynamic mesh model. Based on the transient simulation model, the influence of the stroke and quality of the check valve on the flow rate of the electromagnetic pump was analyzed using the orthogonal experiment design method. The results show that matching the check valve parameters can effectively enhance the flow characteristics of the electromagnetic pump. When the check valve adopts the best matching scheme, the net output flow of the electromagnetic pump is increased by 33.1% compared with the initial design. The above research provides a reference for optimal design of direct driving electromagnetic pump.
Aiming at the flow bottleneck of a new direct drive electromagnetic pump applying check valves, the influence of check valves on the direct drive electromagnetic pump flow characteristics was studied, and the key parameters of the pump system were optimized. The transient simulation of the electromagnetic pump system was established using computer simulation technology. Numerical simulation and experimental verification were applied to velocity field distribution of the pump and the motion law of the check valve using FLUENT software which adopts SST k-ω turbulent model, UDF(User Define Functions) and dynamic mesh model. Based on the transient simulation model, the influence of the stroke and quality of the check valve on the flow rate of the electromagnetic pump was analyzed using the orthogonal experiment design method. The results show that matching the check valve parameters can effectively enhance the flow characteristics of the electromagnetic pump. When the check valve adopts the best matching scheme, the net output flow of the electromagnetic pump is increased by 33.1% compared with the initial design. The above research provides a reference for optimal design of direct driving electromagnetic pump.
引文
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[2] 危则.SCR系统高精度电磁计量泵的设计与研究[D].武汉:武汉工程大学,2014.
[3] 董世民,王春华,阎乐好. 往复泵自动锥形阀运动规律的新模型与仿真[J]. 流体机械, 2001,29(6):19-22.
[4] 李凯,钱志博,贺炜炜. 鱼雷柱塞变量泵配流阀参数设计与仿真[J]. 计算机仿真, 2010,27(2):10-13.
[5] 翁武钊,吴万荣,周现奇. 新型液压驱动往复泵泵阀运动规律的仿真研究[J]. 计算机仿真, 2011,28(10):411-414.
[6] 李洋,焦宗夏,吴帅. 应用单向阀配流的高频往复泵的流量特性分析及优化设计[J].机械工程学报, 2013,49(14):154-163.
[7] Q Xia, X P Guang. Flow Field Analysis and Structure Optimization of Water Hydraulic Poppet Valve Based on the CFD[J]. Advanced Materials Research, 2013,791-793: 734-737.
[8] 任芸,等. 考虑旋转和曲率影响的SST k-ω湍流模型改进[J]. 农业机械学报, 2012,43(11):123-128.
[9] 金文,张鸿雁. 微尺度内流流场数值模拟方法及实验[J]. 农业机械学报,2010,41(3): 67～71.
[10] 吴波,等. 基于CFD正交试验的螺旋槽干气密封性能仿真研究[J]. 流体机械, 2014,(1):11-16.