航天器用超低黏度齿轮泵轻量化设计

发布时间：2018-04-06 08:01

本文选题：泵　切入点：优化　出处：《农业工程学报》2016年21期

【摘要】：为追求航天器用超低黏度介质齿轮泵较好的容积率和较低的发射成本,该文在创建容积率和新重合度公式的基础上,采用最优化设计方法,通过泵的单位排量体积或单位排量质量最小化,实现了90%的最小容积率和质量最轻化,分析了结构参数对优化结果的影响。结果表明:采用齿顶重合度优化设计后的根切重合度为 0.3429,不能保证连续传动要求;压力角、轴半径、齿条刀具齿顶圆角半径和过渡区起始角对优化结果,分别有6.07%、7.8%、2.9%和6.4%的影响,总体上影响不大;径向、轴向间隙的影响很大,并具有0.04、0.07 mm的影响转折点,该转折点为径向、轴向间隙的取值上限提供了依据。初次针对航天用齿轮泵的优化设计尝试,阐明了超低黏度介质同样适用于齿轮泵。该研究可为提高其他行业用超低黏度液压泵的研发提供参考。
[Abstract]:In order to achieve better bulk rate and lower launching cost of ultra-low viscosity medium gear pump for spacecraft, this paper adopts the optimization design method based on the establishment of the formula of volume rate and new coincidence degree.By minimizing the unit displacement volume or the unit displacement mass of the pump, the minimum volume ratio and the minimum mass of 90% are realized. The influence of the structural parameters on the optimization results is analyzed.The results show that the optimum design of tooth top coincidence is 0.3429, which can not guarantee the requirement of continuous transmission, and the pressure angle, shaft radius, tooth top circle radius of rack cutter and the starting angle of transition zone are optimized.The influence of 6.07% and 6.8% is small, and the radial and axial clearance have a great influence, and have the influence turning point of 0.04 ~ 0.07 mm, which provides the basis for the upper limit of radial and axial clearance.Aiming at the optimum design of spaceflight gear pump, it is shown that the ultra-low viscosity medium is also suitable for gear pump.This study can be used as a reference for the development of ultra-low viscosity hydraulic pumps used in other industries.
【作者单位】：成都大学机械工程学院;北京卫星制造厂;西华大学研究生部;
【基金】：北京卫星制造厂资助项目(20804) 四川省自然科学重点资助项目(16ZA0382)
【分类号】：V423

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