二回路系统钠泵流体动静压混合润滑轴承的润滑机制及动力学特性

发布时间：2018-03-01 20:14

  本文关键词： 钠泵轴承 核主泵转子系统 动静压混合轴承 润滑机制 动力学特性　出处：《润滑与密封》2017年08期 　论文类型：期刊论文

【摘要】：对某型工程中的复杂二回路主循环系统钠泵流体动静压混合润滑轴承进行分析。采用流体动静压润滑理论,利用高级旋转机械动力学分析软件包ARMD对该型轴承进行建模和分析,揭示该型轴承相对于传统润滑轴承润滑机制的特殊性,研究不同外载荷、不同转速、不同初始偏心率下钠泵轴承的润滑性能参数及动力学特性参数的演化规律。研究结果表明:外载荷、转速和初始偏心率是影响钠泵轴承润滑性能的重要因素,最大压力、功耗、温升及刚度阻尼系数随外载荷的增大而增大,随初始偏心率增大而略有降低;最小膜厚则反之。该研究为进一步开展钠泵轴承-核主泵转子耦合系统的动力学特性的研究奠定基础。
[Abstract]:The hydrostatic and hydrostatic lubricating bearing of sodium pump in a complex secondary loop main circulation system is analyzed. The bearing is modeled and analyzed by using the hydrostatic and hydrodynamic lubrication theory and the advanced rotary mechanical dynamic analysis software package ARMD. This paper reveals the particularity of the lubrication mechanism of this type of bearing compared with the traditional lubricating bearing, and studies the different external loads and different rotational speeds. The evolution law of lubricating performance parameters and dynamic characteristic parameters of sodium pump bearing under different initial eccentricity. The results show that the external load, rotational speed and initial eccentricity are the important factors affecting the lubricating performance of sodium pump bearing, the maximum pressure and power consumption. The temperature rise and stiffness damping coefficient increase with the increase of external load and decrease slightly with the increase of initial eccentricity. This study lays a foundation for the further study of the dynamic characteristics of the coupling system of a sodium pump bearing and a core main pump rotor.
【作者单位】： 中国舰船研究设计中心;上海交通大学机械系统与振动国家重点实验室;
【基金】：国家自然科学基金项目(11542018;11672178)
【分类号】：TH133.3;TM623
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本文编号：1553407