船陆用大排量双螺杆泵传动部分的分析及优化

发布时间：2018-04-09 15:33

本文选题：双螺杆泵　切入点：参数化　出处：《天津理工大学》2013年硕士论文

【摘要】：近年来随着螺杆机械发展越来越迅猛，种类越来越繁多，其发挥的作用也越来越大。螺杆泵、螺杆压缩机等都是螺杆机械的典型代表。其中，，双螺杆泵由于其具有其他类型泵不可取代的特点，在船舶、石油化工等行业得到广泛应用，随着科技和工业的不断发展，对大排量船用双螺杆泵的需求越来越多。双螺杆泵的传动部分是双螺杆泵主要的工作部分，对双螺杆泵的流量、效率等性能起决定性作用，它主要包括齿轮、轴、螺旋套、轴承等，其中螺旋套对泵的流量、压力等性能有很大的影响。本文主要对大排量双螺杆泵中的传动部分进行优化设计。主要内容包括： 1、对双螺杆泵传动部分进行三维建模。在同步齿轮的建模过程中，由于齿轮的齿根圆和基圆的大小关系不同，研发了一种新的齿轮的建模方法。并且建立出轴、螺旋套以及传动部分装配体的三维模型。 2、对齿轮进了静力学分析及优化。首先通对齿轮的轮齿部分进行了静力学分析，验证轮齿是否满足工作要求；以齿轮轻量化为目标，确定出优化的约束条件，再对选取的优化参数进行敏感度分析，找出影响齿轮质量的较大的参数，而后对其进行轻量化设计。 3、对主动轴进行了静力学分析及改进。本文通过对主动轴进行静力学和模态的分析，得出其应力、应变的分布云图以及主动轴发生共振的频率。根据分析结果对主动轴结构进行改进。对主动轴进行改进，以降低主动轴的最大应力为目标，选取相关参数，进行敏感度分析，然后根据静力学分析的结果确定出优化的约束条件完成对主动轴结构进行优化，减小轴的最大应力。 4、由于双螺杆泵零件多、空间小要对双螺杆泵传动部分运动仿真分析及干涉检测，验证传动结构中的零件不发生干涉现象。本文通过对双螺杆泵传动机构的建模、有限元分析及优化形成了一条支持双螺杆泵传动部分设计的计算机辅助设计技术路线，有较大的工程意义。
[Abstract]:In recent years, with the rapid development of screw machinery, there are more and more kinds of screw machinery, and it plays a more and more important role.Screw pump, screw compressor and so on are typical representatives of screw machinery.Among them, double screw pump is widely used in ship, petrochemical and other industries because of its irreplaceable characteristics. With the development of science and technology and industry, there is more and more demand for large displacement double screw pump.The driving part of the double screw pump is the main working part of the double screw pump, which plays a decisive role in the flow and efficiency of the double screw pump. It mainly includes gear, shaft, spiral sleeve, bearing, etc.Pressure and other properties have a great impact.This article mainly carries on the optimization design to the transmission part in the large displacement double screw pump.The main elements include:1. The three-dimensional modeling of the drive part of double screw pump is carried out.In the modeling process of synchronous gear, a new modeling method of gear is developed because of the difference between the root circle and the base circle of the gear.The three-dimensional model of shaft, helical sleeve and drive part assembly is established.2. Static analysis and optimization of gear are carried out.Firstly, the static analysis of gear tooth part is carried out to verify whether the gear tooth meets the working requirements, and the optimized constraint condition is determined with the light weight of gear as the target, and then the sensitivity analysis of the selected optimization parameters is carried out.Find out the larger parameters which affect the gear quality, and then carry on the lightweight design to it.3. The static analysis and improvement of the drive shaft are carried out.Based on the static and modal analysis of the main shaft, the distribution of the stress and strain and the resonance frequency of the shaft are obtained in this paper.According to the analysis results, the structure of the drive shaft is improved.The aim of this paper is to reduce the maximum stress of the shaft, select the relevant parameters and analyze the sensitivity of the shaft. Then, according to the results of static analysis, the optimized constraint conditions are determined to optimize the structure of the shaft.Reduce the maximum stress on the axis.4. Because of the large number of parts of double screw pump, the motion simulation analysis and interference detection of the driving part of double screw pump should be carried out to verify that there is no interference phenomenon in the part of transmission structure.Based on the modeling of the driving mechanism of the double screw pump, the finite element analysis and optimization have formed a technical route of computer aided design to support the design of the drive part of the double screw pump, which is of great engineering significance.
【学位授予单位】：天津理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH327

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