轴承箱用磁力油封的设计和应用研究

发布时间：2018-05-07 02:35

本文选题：磁力油封 + 磁力计算　；参考：《华东理工大学》2017年硕士论文

【摘要】：轴承箱是保证机泵等设备稳定运行的关键部件。传统轴承箱密封方式主要为骨架唇式油封和迷宫油封等,而这些油封往往存在密封不可靠,寿命短,对轴有损害和消耗电机功率大等缺陷。本论文就是在不改变轴承箱原有整体结构的前提下,借鉴机械密封的基本原理,采用磁力作为补偿力来设计开发一种适合轴承箱应用的磁力油封,以解决轴承箱的油封问题。论文主要进行了以下工作:论文通过对轴承箱结构的分析和计算,对轴承箱用磁力油封的结构进行了优化设计;通过对磁力的计算、磁力油封材料的选用,确定了动静环材料,考虑密封性能和应用改造情况,分别设计出两种磁力油封形式,即非集成磁力油封和集成式磁力油封。对设计的两种磁力油封结构进行有限元仿真分析。采用简化的磁力油封模型,将磁力等效为提供压紧的压紧力,对两种磁力油封的效果进行了分析,并对影响密封性能的相关参数进行了研究。结果表明两种磁力油封系统均能满足密封性能要求,0形圈的压缩率为5%时,系统具有较好的密封效果。通过对两种磁力油封在相同试验参数的试验验证,表明非集成式磁力油封在实验过程中,其端面始终保持良好的接触状态,泄漏量仅1mL/h,远小于国家标准中要求的5mL/h;而集成式磁力油封在泄漏量高于国家标准要求。而进一步改进后的磁力油封,无论是泄漏量、磨损量还是摩擦热等试验结果,都达到了预期效果并满足了验收标准的要求。通过在炼化装置现场对非集成和集成式磁力油封的工程实践应用,也取得了非常满意的效果,表明磁力油封可以应用于轴承箱替代传统油封以实现动设备的长周期无泄漏运转,为此类磁力油封的设计及应用提供了参考依据。
[Abstract]:Bearing box is the key component to ensure the stable operation of machine pump and other equipment. The traditional sealing methods of bearing box are mainly skeleton lip seal and labyrinth seal. These oil seals often have some defects such as unreliable seal, short life, damage to shaft and high power consumption of motor. On the premise of not changing the original integral structure of the bearing box and using the basic principle of the mechanical seal for reference, this paper designs and develops a kind of magnetic oil seal suitable for the application of the bearing box by using the magnetic force as the compensation force to solve the problem of the oil seal of the bearing box. The main work of this paper is as follows: through the analysis and calculation of the structure of the bearing box, the structure of the magnetic oil seal for the bearing box is optimized and the material of the dynamic and static ring is determined by the calculation of the magnetic force and the selection of the material for the magnetic oil seal. Considering the seal performance and application modification, two types of magnetic oil seal were designed, that is, non-integrated magnetic oil seal and integrated magnetic oil seal. The finite element simulation analysis of two magnetic oil seal structures is carried out. By using the simplified magnetic oil seal model, the magnetic force is equivalent to the compaction force to provide the compaction force. The effects of the two kinds of magnetic oil seal are analyzed, and the related parameters affecting the sealing performance are studied. The results show that the two magnetic oil seal systems can meet the requirements of sealing performance. When the compression ratio of the zero ring is 5, the system has a better sealing effect. The test results of two kinds of magnetic seal in the same test parameters show that the end face of the non-integrated magnetic oil seal always keeps in a good contact state during the experiment. The leakage volume is only 1 mL / h, which is much less than the 5 mL / h required in the national standard, while the integrated magnetic oil seal is higher than the national standard in leakage volume. The further improved magnetic oil seal, whether it is leakage, wear or friction heat, has achieved the expected results and met the requirements of the acceptance standard. Through the engineering practice of non-integrated and integrated magnetic oil seal in the refinery plant, it is shown that the magnetic oil seal can be used to replace the traditional oil seal in the bearing box to realize the long-period leakage free operation of the moving equipment. It provides a reference for the design and application of this kind of magnetic oil seal.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH136

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