外啮合直齿轮泵的耳型浮动套筒参数优化
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摘要
为了减少外啮合直齿轮泵的主、从动齿轮与其端面浮动套筒间的磨损,进而提高齿轮泵的容积效率及使用寿命,分析了齿轮泵端面磨损的机理,得出其所受合力与力矩不平衡是产生磨损的根本原因.由齿轮泵主要参数推导出了其外侧受力与力矩的表达式.基于遗传算法,以耳型浮动套筒所受合力为目标函数,以耳型浮动套筒密封圈的外径、内径、角度和弹性强度作为自变量,在力矩平衡和密封圈宽度的约束条件下,求得当目标函数最小时自变量的值.最后分别对参数优化前后浮动套筒的外啮合直齿轮泵建模并导入PUMPLINX中进行数值模拟,通过对比分析后发现,优化后的耳型浮动套筒所受合力基本为零,受力条件得到改善.本研究可为齿轮泵的密封设计提供技术参考.
To reduce the friction among the main gears,driven gears and their end face floating sleeve in external spur-gear pumps,and enhance the volume efficiency and fatigue life,the mechanism of end wear of gear pump was analyzed firstly,and it is concluded that the unbalance of force and moment of the floating sleeve is the cause of wear. The expression of outboard force and moment were deduced.Based on genetic algorithm,the resultant and resultant moment of the ear-type floating sleeve were taken as objective functions. And the outer diameter,inner diameter,angle and elastic strength of the seal ring of floating sleeve were taken as independent variables. Under the restrained conditions of moment balance and width of seal ring,the values of the independent variables were obtained when the objective function was minimum. At last,numerical simulation was carried out on external spur-gear pump with non-optimized and ear-type floating sleeve by PUMPLINX. The numerical simulation of gear pump with optimized floating sleeve shows that the resultant force of the floating sleeve is almost zero.Then the rationality of the optimum design of the floating sleeve was verified. The research can provide technical reference for gear pump sealing design.
To reduce the friction among the main gears,driven gears and their end face floating sleeve in external spur-gear pumps,and enhance the volume efficiency and fatigue life,the mechanism of end wear of gear pump was analyzed firstly,and it is concluded that the unbalance of force and moment of the floating sleeve is the cause of wear. The expression of outboard force and moment were deduced.Based on genetic algorithm,the resultant and resultant moment of the ear-type floating sleeve were taken as objective functions. And the outer diameter,inner diameter,angle and elastic strength of the seal ring of floating sleeve were taken as independent variables. Under the restrained conditions of moment balance and width of seal ring,the values of the independent variables were obtained when the objective function was minimum. At last,numerical simulation was carried out on external spur-gear pump with non-optimized and ear-type floating sleeve by PUMPLINX. The numerical simulation of gear pump with optimized floating sleeve shows that the resultant force of the floating sleeve is almost zero.Then the rationality of the optimum design of the floating sleeve was verified. The research can provide technical reference for gear pump sealing design.
引文
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[11]张德胜,施卫东,张华,等.不同湍流模型在轴流泵性能预测中的应用[J].农业工程学报,2012,28(1):66-71.ZHANG Desheng,SHI Weidong,ZHANG Hua,et al.Application of different turbulence models for predicting performance of axial flow pump[J]. Transactions of the CSAE,2012,28(1):66-71.(in Chinese)
[12]叶志烜,胡春艳,刘建峰,等.基于动网格的蝶阀启闭过程的数值模拟研究[J].流体机械,2018,46(4):29-33.YE Zhixuan,HU Chunyan,LIU Jianfeng,et al. Numerical simulation and research on opening and closing process of butterfly valve based on dynamic mesh[J].Fluid machinery,2018,46(4):29-33.(in Chinese)
[13]JIANG Z,LIANG Z,TANG Y,et al. Numerical simulation and experimental study of the hydrodynamics of a modeled reef located within a current[J]. Chinese journal of oceanology and limnology,2010,28(2):267-273.
[2]DALPIAZ G,FERNANDEZ D A,MUCCHI E. Mo-deling meshing phenomena in gear pumps[C]//Proceedings of the 2004 International Conference on Noise and Vibration Engineering, ISMA. Leuven, Belgium:Katholieke Universiteit Leuven,2004:949-963.
[3]MUCCHI E,D'ELIA G,DALPIAZ G. Simulation of the running in process in external gear pumps and experimental verification[J]. Meccanica,2012,47(3):621-637.
[4]CASTILLA R,WOJCIECHOWSKI J,GAMEZ-MONTERO P J,et al. Analysis of the turbulence in the suction chamber of an external gear pump using Time Resolved Particle Image Velocimetry[J]. Flow measurement&instrumentation,2008,19(6):377-384.
[5]刘巍,王安麟,单学文,等.齿轮泵浮动侧板端面密封失效机理分析验证[J].同济大学学报(自然科学版),2015,43(2):299-304.LIU Wei,WANG Anlin,SHAN Xuewen,et al. Failure mechanism analysis and validation of gear-pump floating end-plate face seal[J]. Journal of Tongji University(natural science),2015,43(2):299-304.(in Chinese)
[6]王安麟,张小路,刘巍,等.齿轮泵轴向浮动侧板力矩平衡机制改进[J].同济大学学报(自然科学版),2013,41(10):1579-1583.WANG Anlin,ZHANG Xiaolu,LIU Wei,et al. Moment balance mechanism of gear pump's axial floating wear plate[J]. Journal of Tongji University(natural science),2013,41(10):1579-1583.(in Chinese)
[7]ZHU Z,ZHANG F,LI C,et al. Genetic algorithm optimization applied to the fuel supply parameters of diesel engines working at plateau[J]. Applied energy,2015,157:789-797.
[8]ZOU Y,ZHANG Y. Improved multi-objective genetic algorithm based on parallel hybrid evolutionary theory[J]. Environmental science&technology,2015,34(3):134-133.
[9]李健.基于遗传算法的混合动力集装箱装载机控制策略研究[D].重庆:重庆大学,2015.
[10]石丽娜,陈志平,章序文,等.基于动网格的高压煤浆输送泵内部流场数值模拟优化研究[J].高校化学工程学报,2012,26(3):403-411.SHI Lina,CHEN Zhiping,ZHANG Xuwen,et al. Numerical simulation and optimization of internal flow field in the high pressure coal conveying pump based on the dynamic mesh[J]. Journal of chemical engineering of Chinese universities,2012,26(3):403-411.(in Chinese)
[11]张德胜,施卫东,张华,等.不同湍流模型在轴流泵性能预测中的应用[J].农业工程学报,2012,28(1):66-71.ZHANG Desheng,SHI Weidong,ZHANG Hua,et al.Application of different turbulence models for predicting performance of axial flow pump[J]. Transactions of the CSAE,2012,28(1):66-71.(in Chinese)
[12]叶志烜,胡春艳,刘建峰,等.基于动网格的蝶阀启闭过程的数值模拟研究[J].流体机械,2018,46(4):29-33.YE Zhixuan,HU Chunyan,LIU Jianfeng,et al. Numerical simulation and research on opening and closing process of butterfly valve based on dynamic mesh[J].Fluid machinery,2018,46(4):29-33.(in Chinese)
[13]JIANG Z,LIANG Z,TANG Y,et al. Numerical simulation and experimental study of the hydrodynamics of a modeled reef located within a current[J]. Chinese journal of oceanology and limnology,2010,28(2):267-273.