无油压缩机滑动轴承磨损过程的动态模拟

根据磨损动态过程理论，对使用复合自润滑材料的压缩机滑动轴承的磨损过程进行了动态拟，并在滑块式压缩机实验台上对曲柄销－滑块副进行了磨损实验，证明了磨损过程动态模拟的正确性。     

无油压缩机滑动轴承磨损过程的动态模似

根据磨损动态过程理论,对使用复合自润滑材料的压缩机滑动轴承的磨损过程进行了动态拟,并在滑块式压缩机实验台上对曲柄销一滑块副进行了磨损实验,证明了磨损过程动态模拟的正确性。     

无油润滑压缩机滑块的耐磨设计

将优化了的复合自润滑材料，镶嵌于滑块式无油润滑压缩机的滑块上，进行了实验室台架试验，取得了近３００小时无故障的阶段结果。实验表明，选择合适的摩擦副配合间隙可以降低表面温度，减小磨损。同时在摩擦副表面布置合理的构造有利于复合自润滑材料的自动释放，延长寿命，控制磨损．     

影响无油润滑压缩机活塞环寿命的因素及对策

从使用和装配方面，分析了影响无油润滑压缩机活塞环寿命的因素，并对常见问题提出了对策。     

提高无油润滑压缩机排气量的方法

提高无油润滑压缩机排气量的方法邱归成郴州卷烟厂我厂原装有Ｌ－２０／８型无油润滑空气压缩机三台，设计要求两台工作，一台备用；为卷接机、包装机、切丝机等卷烟生产设备的气动机构提供压缩空气。用气负荷约为３４．５ｍ３／ｈ。投入运行以后，发现两台运行时的排气量...     

压缩机的整机无油润滑

银田化工有限公司是一个年产合成氨2.5万吨的中型化工企业。目前厂内共有4M8(3)型压缩机四台。 4M8(3)型压缩机原设计为整机注油运行,由于活塞环使用寿命不稳定,特别是高压段环有时仅用几百小时就损坏了,1994年我们开始在4M8(3)机的高压缸内试用无油润滑技术,获得了成功,六段活塞环使用累计工作     

无油润滑压缩机动态虚拟设计

在分析压缩机产品CAD技术现状的基础上，介绍了开发无油润滑压缩机动态虚拟设计系统的基本思路及其方法和流程，提出了压缩机虚拟设计系统的体系结构，就虚拟设计过程中涉及到的关键技术进行了专门研究和探讨，进一步指出了动态虚拟设计是压缩机CAD技术发展的一个重要方向。     

无油润滑压缩机活塞环的研究进展

为实现压缩机的无油润滑，需采用无润滑活塞环。无润滑活塞环由自润滑材料制造。本文分析了常用自润滑材料，如填充聚四氟乙烯、填充聚酰亚胺等的性能及工程应用，并报道了金属材料、复合型填充聚四氟乙烯、CFRP等新材料。介绍了整体开口活塞环及无背压活塞环的结构、特点、应用及设计计算。对活塞环结构型式的研究进展，如T型环、压力平衡环、超短迷宫式无托环整体无背压活塞环、一槽双环等作了介绍，并展望了无润滑活塞环的研究前景。     

无油润滑压缩机活塞环的设计与应用

无油润滑压缩机活塞环是重要零件之一,寿命短,属于易损件.它的好坏直接影响到压缩机的排气量、功率和可靠性,即影响压缩机的经济性和使用寿命.虽然自润滑压缩机用量很大,且其应用范围也在不断地扩展,但到目前为止,对其活塞环设计方法介绍远没有铸铁环的资料充足.本文主要根据长期研制石化企业用CFRP,(碳纤维增强聚四氟乙烯)活塞环的经验,对活塞环的设计和应用进行介绍和总结.     

通用滑动轴承CAT系统的研制

本系统属于应用于型滑动轴承ＣＡＴ系统，它可以对各种动压，静压轴承行进不同状态下的性能测试，具有多通道快速巡回采样，数据处理，图形显示等功能。能实现对油膜压力，油膜厚度及油膜温度的测试。本试验台同时可以对轴承的动态特性进行测试。     

A Study of Non-Recessed Hybrid Flexible Journal Bearing With Different Restrictors

For bearings operating under heavy loads, the elastic deformation of bearing surface induced by fluid film pressures can no longer be neglected as it is comparable to the order of magnitude of fluid film thickness. In the present work a theoretical study describing comparative performance of non-recessed hybrid journal bearing using different flow control devices has been carried out by considering bearing shell flexibility into the analysis. The relevant governing equations have been solved using finite element method. The comparative performance of non-recessed hybrid journal bearings of two separate configurations have been studied for various values of bearing flexibility parameter (([Cbar]_d)). The results have been presented for hole-entry type journal bearings compensated by capillary, orifice and constant flow valve restrictors and for a slot-entry type journal bearing, for the same set of values of operating and geometric parameters. The computed results indicates that in order to get an improved performance of non-recessed journal bearing, a proper selection of bearing flexibility parameter (([Cbar]_d)) along with type of flow control device (i.e., capillary, orifice, constant flow valve, slot etc.) and type of bearing configuration (symmetric/asymmetric) are essential.     

Misalignment In A Complete Shell Gas Foil Journal Bearing

The effect of misalignment on the performance of a complete shell gas foil bearing is discussed. An iterative theoretical model based on the finite element method is used. The model includes membrane and elastic foundation effects in the structural model. An isothermal perfect gas is used as the lubricant fluid. Results are presented demonstrating the effect of misalignment on load capacity, minimum clearance, and moments acting normal to the journal.     

动载滑动轴承润滑设计计算的研究进展

本文对动载滑动轴承润滑设计计算的研究进展进行了综述和分析，并提出了未来动载滑动轴承研究所要解决的问题。     

对具有可倾瓦块和固定瓦块的混合型径向滑动轴承性能分析

本分析计算了顶部瓦块固定的可倾瓦径向滑动轴承（简称混合型轴承）的性能参数,与相同尺寸的可倾瓦径向滑动轴承相比,该种混合型轴承在承载能力,流量,摩擦功耗,平均温升等方面都发生了变化,具有明显的特点,最后的验测试验证了本所采用的分析计算方法是可行的。     

Ferrofluid Lubrication of a Journal Bearing Considering Cavitation

Ferrohydrodynamic lubrication in journal bearings by considering cavitation boundary conditions is studied. It is assumed that the magnetization vector is not parallel to the magnetic field vector. Various bearing characteristics have been studied and it is seen that qualitative behavior of these characteristics remains similar to that in the case of non-ferromagnetic fluid. However, a significant quantitative enhancement of these characteristics is observed.     

油水两相流对滑动轴承承载能力的影响

研究建立了一台适用于测试油水两相流润滑工况下滑动轴承实验装置,该装置能进行滑动轴承偏心率的测量。实验研究了润滑油混入水滴后对滑动轴承承载能力的影响规律,得出了若干规律性的结论。     

弹性变形对径向轴承弹流润滑性能的影响

本文以上具有不同弹性模量、泊松系数的两种轴承材料为例分析了弹性变形对有限长径向滑动轴承的弹流润滑性能的影响。流体动力润滑方程采用雷诺方程,应用力学问题的通用有限元软件ＭＡＲＣ产生柔度矩阵计算弹性变形。对比分析了二种轴承的油膜压力分布、油膜厚度分布、最小油膜厚度以及承载能力。     

The Finite Partial Fitted Journal Bearing

An exact solution is found for the finite fitted journal bearing. Numerical calculations are carried out for an arc of 60° and an arc of 120° for various positions of the bearing. A comparison is made of the load, pressure distribution, and friction force for the finite bearing and the infinite bearing (no side flow). It is concluded that in general the neglect of side flow yields a solution that may be in great error.