蒸汽压缩蒸馏装置密封技术研究
发布时间：2018-07-16 13:19
【摘要】：蒸汽压缩蒸馏装置（VCD）是我国空间站工程尿液收集及再生处理系统中的关键设备，该装置的密封对设备的性能具有至关重要的作用。传统的密封无法满足寿命长、零泄漏、可靠性高等要求，基于磁性液体密封的优点，拟采用磁性液体密封。 在了解磁性液体特性的基础上，系统地整理总结了磁性液体密封理论、磁性液体密封结构耐压能力的计算公式及磁性液体密封结构中永久磁铁的计算公式。 依据磁性液体密封设计理论，设计了磁性液体密封结构，其中包括极靴、永久磁铁、导磁轴套、非导磁内垫圈、非导磁外垫圈、隔磁套、非导磁压环等零件，并且合理的选择了合适的磁性液体。 运用ANSYS软件详细地分析了磁性液体密封结构，得到了磁力线分布图、磁流密度矢量图、磁流密度等值云图、密封间隙处磁场强度分布曲线等，并计算了该密封结构的耐压能力，充分证明了磁性液体密封结构设计的合理性。 使用ANSYS参数化设计语言开发了参数化分析模块，完成了快捷键的设置，使软件能够自动完成不同模型的分析及后处理。利用此模块反复分析，得到了极齿高度、极齿宽度以及槽宽的取值范围，，为密封结构的优化提供了依据。 建立了磁性液体密封结构优化数学模型，使用MATLAB软件对磁性液体密封结构进行优化，达到了减小磁性液体密封结构重量的目标。
[Abstract]:Steam Compression Distillation Unit (VCD) is a key equipment in the urine collection and regeneration system of space station engineering in China. The seal of VCD equipment plays an important role in the performance of the equipment. The traditional seal can not meet the requirements of long life, zero leakage and high reliability. Based on the advantages of magnetic liquid seal, magnetic liquid seal is proposed. On the basis of understanding the characteristics of magnetic fluid, the theory of magnetic liquid seal, the formula of pressure resistance of magnetic liquid seal structure and the formula of permanent magnet in magnetic liquid seal structure are systematically summarized. According to the theory of magnetic liquid seal design, the magnetic liquid seal structure is designed, which includes pole boot, permanent magnet, magnetic guide shaft sleeve, non-magnetic conduction inner gasket, non-magnetic conduction outer gasket, magnetic insulation sleeve, non-magnetic conductivity pressure ring and so on. And reasonable selection of the appropriate magnetic fluid. The magnetic fluid seal structure is analyzed in detail by using ANSYS software. The magnetic force line distribution diagram, the magnetic flow density vector diagram, the magnetic flow density equivalent cloud diagram, the magnetic field intensity distribution curve at the seal clearance are obtained, and the pressure resistance of the seal structure is calculated. The rationality of the structure design of magnetic liquid seal is fully proved. The parameterized analysis module is developed by using ANSYS parametric design language, and the shortcut key is set up, so that the software can automatically complete the analysis and post-processing of different models. By repeated analysis of this module, the value range of pole tooth height, pole tooth width and slot width is obtained, which provides the basis for the optimization of seal structure. The optimization mathematical model of magnetic liquid seal structure is established, and the structure of magnetic liquid seal is optimized by MATLAB software. The goal of reducing the weight of magnetic liquid seal structure is achieved.
【学位授予单位】：河北联合大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：V444.3;TB42
本文编号：2126508
[Abstract]:Steam Compression Distillation Unit (VCD) is a key equipment in the urine collection and regeneration system of space station engineering in China. The seal of VCD equipment plays an important role in the performance of the equipment. The traditional seal can not meet the requirements of long life, zero leakage and high reliability. Based on the advantages of magnetic liquid seal, magnetic liquid seal is proposed. On the basis of understanding the characteristics of magnetic fluid, the theory of magnetic liquid seal, the formula of pressure resistance of magnetic liquid seal structure and the formula of permanent magnet in magnetic liquid seal structure are systematically summarized. According to the theory of magnetic liquid seal design, the magnetic liquid seal structure is designed, which includes pole boot, permanent magnet, magnetic guide shaft sleeve, non-magnetic conduction inner gasket, non-magnetic conduction outer gasket, magnetic insulation sleeve, non-magnetic conductivity pressure ring and so on. And reasonable selection of the appropriate magnetic fluid. The magnetic fluid seal structure is analyzed in detail by using ANSYS software. The magnetic force line distribution diagram, the magnetic flow density vector diagram, the magnetic flow density equivalent cloud diagram, the magnetic field intensity distribution curve at the seal clearance are obtained, and the pressure resistance of the seal structure is calculated. The rationality of the structure design of magnetic liquid seal is fully proved. The parameterized analysis module is developed by using ANSYS parametric design language, and the shortcut key is set up, so that the software can automatically complete the analysis and post-processing of different models. By repeated analysis of this module, the value range of pole tooth height, pole tooth width and slot width is obtained, which provides the basis for the optimization of seal structure. The optimization mathematical model of magnetic liquid seal structure is established, and the structure of magnetic liquid seal is optimized by MATLAB software. The goal of reducing the weight of magnetic liquid seal structure is achieved.
【学位授予单位】：河北联合大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：V444.3;TB42
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本文编号：2126508
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