水压密封件的密封性能研究

发布时间：2018-01-10 05:01

本文关键词：水压密封件的密封性能研究　出处：《西南交通大学》2012年硕士论文　论文类型：学位论文

更多相关文章： 水压泵 机械密封 O形圈 泄漏 粗糙度

【摘要】：作为水压传动与控制中非常重要的基础性元件,水压泵具有抗污染能力强,构造简单等特点,从而广泛应用于水压系统中。但水压泵在使用过程中所产生的泄漏等问题严重影响了其应用场合。随着水压技术的发展,对水压泵密封件的性能提出了更高的要求,因此,水压泵密封件在密封方面的特性得到了学术界和工业界广泛的关注。论文主要采用ANSYS和FLUENT软件对水压泵密封件进行建模和仿真,重点研究水压密封件产生泄漏的原因以及如何从结构上消除泄漏的方法,并模拟和计算不同结构0形圈的密封特性,从可视化的角度,分析不同结构机械密封易于产生泄漏的位置和强弱。论文主要包括三部分内容： (1)利用ANSYS和FLUENT对O形圈的水压密封性能进行了计算分析。其中重点分析了密封压力和0形圈材料对O形圈密封特性的影响,通过研究不同结构参数对O形圈密封特性的影响,得出除了密封压力和O形圈的材料之外,线径和密封间隙也是易引起0形圈的泄漏的因素。对其进行稳态ANSYS计算,验证了泄漏因素分析的正确性。 (2)利用ANSYS和FLUENT分析被密封件表面粗糙度对水压O形圈密封特性和静态特性的影响。得出了水压O形圈最小接触宽度要求,为水压O形圈的设计提供了一定的依据。 (3)利用ANSYS对某种水压泵的轴封密封性能进行静态计算和分析,重点分析端面宽度、弹簧压力、液体压力和动环的材料对机械密封特性和静态特性的影响。通过分析可知,动环的形变是对机械密封密封性能有较大影响的参数。基于对轴封性能的详细计算,对其进行结构优化,进一步提高水压泵轴封的密封性能。并在WorkBench中对水压泵机械密封密封性能进行立体仿真分析,尝试从结构整体的角度来分析水压泵密封件的密封性能。验证了前面密封性能分析的正确性。
[Abstract]:As the basic element is very important in the hydraulic transmission and control, hydraulic pump has strong anti pollution ability, the advantages of simple structure, which is widely used in hydraulic system. But the leakage problem of hydraulic pump generated in the process of using the serious influence its applications. With the development of hydraulic technology, the hydraulic pump seal the performance put forward higher requirements, therefore, characteristics of water hydraulic pump seal in the seal on the academic and industry attention.
This paper mainly uses ANSYS and FLUENT software of hydraulic pump seal for modeling and simulation, focuses on the research of hydraulic seal leakage causes and how to eliminate the leakage from the structure of the method, simulation and calculation of different sealing characteristics and structure of the 0 ring, from the visual angle, easy to leak sealing the position and intensity of different structure mechanical analysis.
This paper mainly includes three parts:
(1) were calculated using ANSYS and FLUENT analysis of the sealing performance of the water pressure on the O ring. Which focuses on the influence of sealing pressure and 0 ring materials on O ring sealing characteristics, shape characteristics of O ring sealing effect through the study of different structure parameters, except that the sealing pressure and O ring materials, wire diameter and seal gap is easy to cause the leakage factor of the 0 ring. Then the steady-state calculation of its ANSYS, verified the leakage factor analysis.
(2) using ANSYS and FLUENT to analyze the influence of the surface roughness of the seal on the sealing characteristics and static characteristics of the O O ring. The minimum contact width requirement of the water pressure O ring is obtained, which provides a basis for the design of the water pressure O ring.
(3) the static calculation and analysis of the sealing performance using the ANSYS seal of a hydraulic pump, focuses on the analysis of end width, spring pressure, liquid pressure and dynamic effect of ring material on the mechanical seal characteristics and static characteristics. Through the analysis, the deformation of the moving ring parameters have great influence on the sealing performance of mechanical seals. Based on the detailed calculation on the seal performance, optimize the structure of it, further improve the sealing performance of hydraulic pump. And the sealing performance of the sealing for three-dimensional simulation analysis of mechanical hydraulic pump in WorkBench, try to analyze the whole structure of the hydraulic pump from the angle of sealing performance of the sealing parts. Verify the correctness of the performance analysis of the front seal.

【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH136

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