伯努利效应引起滑阀阀芯径向力的研究
发布时间：2018-07-15 07:41
【摘要】：运用CFD软件Fluent对液压滑阀内部流场进行可视化分析,详细研究了阀芯受径向压力分布情况和影响因素。计算发现,径向压力分布与阀口开度、入口流量、环割槽深径比、进出口油道的轴交角都有密切的关系。阀口开度越大,径向压力波动越小;入口流量越大,环割槽深径比越小,径向压力波动越大;与进出口轴交角为0°和90°相比,进出口轴交角为180°时x=0截面的径向压力分布更平稳。同时,通过伯努利效应对入口中心截面处阀芯周向压力分布及阀芯轴向分段建立压力方程,通过理论分析验证了仿真模型和结果的可靠性。最后分析了径向力不平衡产生的卡紧力及径向稳态液动力的分布及其影响因素。
[Abstract]:The internal flow field of hydraulic slide valve was analyzed visually by CFD software fluent, and the radial pressure distribution of the valve core and the influencing factors were studied in detail. It is found that the radial pressure distribution is closely related to the opening of the valve, the inlet flow rate, the ratio of the circumferential groove depth to the diameter, and the axial angle of the inlet and outlet oil channel. The greater the opening degree of the valve is, the smaller the radial pressure fluctuation is; the greater the inlet flow rate is, the smaller the ratio of depth to diameter of the ring cutting groove is, and the greater the radial pressure fluctuation is, compared with the angles of 0 掳and 90 掳for the inlet and outlet shafts. The radial pressure distribution of x0 section is more stable when the angle of inlet and outlet axis is 180 掳. At the same time, the pressure equation is established by Bernoulli effect on the circumferential pressure distribution of the valve core and the axial section of the valve core, and the reliability of the simulation model and the results are verified by theoretical analysis. Finally, the distribution and influencing factors of the clamping force and the radial steady-state hydrodynamic force caused by the radial force imbalance are analyzed.
【作者单位】： 浙江工业大学特种装备制造与先进加工技术教育部重点实验室;浙江大学城市学院工程分院;
【基金】：国家自然科学基金资助项目(51375445) 浙江省自然科学基金资助项目(LZ13E050002)
【分类号】：TH137.52
，
本文编号：2123357
[Abstract]:The internal flow field of hydraulic slide valve was analyzed visually by CFD software fluent, and the radial pressure distribution of the valve core and the influencing factors were studied in detail. It is found that the radial pressure distribution is closely related to the opening of the valve, the inlet flow rate, the ratio of the circumferential groove depth to the diameter, and the axial angle of the inlet and outlet oil channel. The greater the opening degree of the valve is, the smaller the radial pressure fluctuation is; the greater the inlet flow rate is, the smaller the ratio of depth to diameter of the ring cutting groove is, and the greater the radial pressure fluctuation is, compared with the angles of 0 掳and 90 掳for the inlet and outlet shafts. The radial pressure distribution of x0 section is more stable when the angle of inlet and outlet axis is 180 掳. At the same time, the pressure equation is established by Bernoulli effect on the circumferential pressure distribution of the valve core and the axial section of the valve core, and the reliability of the simulation model and the results are verified by theoretical analysis. Finally, the distribution and influencing factors of the clamping force and the radial steady-state hydrodynamic force caused by the radial force imbalance are analyzed.
【作者单位】： 浙江工业大学特种装备制造与先进加工技术教育部重点实验室;浙江大学城市学院工程分院;
【基金】：国家自然科学基金资助项目(51375445) 浙江省自然科学基金资助项目(LZ13E050002)
【分类号】：TH137.52
，
本文编号：2123357
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