Rotary-vane compressors: Some technical aspects of long-life lubricants

Compressors are used all over the world for various individual applications; the current application concerns their use in the ozone process of water treatment. Technical data on different mineral and synthetic lubricants are given. In particular, a new oil was chosen for investigation. Field testing was undertaken over more than 6000 h on two different locations. Used oil monitoring was conducted by sampling during the experiment; analyses of physical and chemical parameters were made and their kinetics are described. Wear, viscometrics and ozone process interaction are discussed in this study.     

往复式压缩机的结构改造及分析

往复式压缩机的适用范围广,其功能可随工况需要而改进,在经过适当的改造后,机器的综合性能得到提高。这里就LW—13／22型二氧化碳压缩机的结构改造进行了工艺分析。     

Diester compressor lubricants in petroleum and chemical plant service

Diesters are the largest volume of esters manufactured, and are derived from adipic, azelaic or sebacic acids. Their various advantages over petroleum-based compressor oils are discussed, and the development of an extended-life diester lubricant is described.     

往复压缩机组状态监测系统开发

往复压缩机组状态监测系统的开发，主要是针对机组的运行特点和现场要求而设计的，通过对机组进行状态监测，可以实时掌握机组运行状态和变化趋势，为实现预知维修及机组的高效运行提供了可靠的保障。     

一种回转式活塞压缩机的研制及应用预测

提出了一种回转式活塞压缩机,阐述了其工作原理及基本结构。回转式活塞压缩机结合了往复式压缩机和回转式压缩机的优点,克服了上述两种压缩机的一些使用局限性。该回转式活塞压缩机具有结构简单、零/部件少等特点。由于该压缩机没有吸气阀和排气阀,因此,可减少易损件并降低噪声。介绍了该压缩机的排气结构、能量调节机构和润滑密封方式,并预测了它的应用场合。     

2D12往复压缩机气缸内压力检测技术

介绍了依据2D12压缩机的结构特点而开发研制的气缸内压力引出装置。此装置安装方便，对压缩机的余隙容积影响较小，人造故障试验验证了此装置的可靠性及结构的合理性，并用试验采集的压力信号绘制出了指示图。通过对指示图的分析进一步证明了用指示图对压缩机运行工况进行监测和故障诊断的有效性。     

活塞式压缩机参数化绘图软件的研制

针对单列微型压缩机作为对象进行了计算机参数化绘图的研究，编制了压缩机的ARX参数化绘图软件，使烦琐的绘图过程变得简单，快速。     

国内外压缩机学术研究近况

介绍了容积式压缩机近年来研究与开发状况，包括往复压缩机的气缸、十字头、机身等的新结构，大吨位与新材料新工艺；回转式压缩机单双螺杆及其它新结构形式等。     

基于虚拟样机的汽车空调压缩机曲轴力学分析

按虚拟样机思想,利用动力学分析技术和有限元分析技术相结合的方法,快速精确地对汽车空调压缩机在三种不同转速下,曲轴曲柄销受力、应力分布情况和疲劳强度进行分析比较。为改进压缩机的曲轴设计提供了参考依据。     

关于冰箱压缩机驱动方式改进的探讨

介绍了传统旋转电机驱动压缩机和改进后直线电机驱动压缩机的结构形式、工作原理及性能,指出直线压缩机的显著优势和可观的发展前景。     

Synthetic lubricants based on sebacic complex esters

This paper presents the results of a study carried out in order to produce synthetic ester oils of a mixed structure based on sebacic acid with beneficial tribological properties. These series of unsymmetrical diesters were synthesized using superior aliphatic alcohols such as 2‐ethyl‐hexanol, isodecanol and isotridecanol, along with special alcohols of a complex alkyl‐aryl structure, namely 2‐phenoxy‐ethanol, 2‐[(o‐sec butyl) phenoxy] ethanol and 2‐[(p‐nonyl) phenoxy] ethanol. Also synthesized were symmetric esters based on the complex aliphatic‐aromatic alcohols with pendant aliphatic chain. The variation in the principal properties as a function of both the length of the aliphatic chain introduced by the aliphatic alcohol, and the length and position of the aliphatic pendant chain on the aromatic nucleus of the complex alkyl‐aryl alcohol was assessed. Based on this, it has been possible to obtain fluid products with variable properties. The introduction of the aromatic function in the structure of these diesters led to interesting features, and the superior values recorded for the main tribological characteristics demonstrated their versatility. Copyright © 2006 John Wiley & Sons, Ltd.     

往复压缩机气量调节方法的研究进展

介绍了往复压缩机气量调节方法的国内外研究进展和应用实例.     

往复式压缩机监测系统设计

介绍了压缩机监测系统的软、硬件结构。通过系统软件设计分析,基于组态软件的系统模拟动画的显示能实时反映压缩机的工作状态和各种运行参数,实现了压缩机运行状态监测。     

滚动转子式压缩机的技术特性分析

滚动转子式压缩机在家用空调器中得到了广泛应用。本文对滚动转子式压缩机的技术特性进行了分析，讨论了改进其性能的技术方案，并指出了动转子压缩机的发展方向。     

基于MPI的往复压缩机监控系统通信技术研究

在Delphi开发环境中,调用PRODAVE S7动态链接库,采用MPI方式实现了大型6缸往复压缩机监控系统的工控机与S7-300系列PLC之间的通信。工程实践表明,该通信方式数据传输速率快、传输准确,对建立大型过程设备的状态监测和故障诊断系统具有很好的参考价值。     

基于多系统联合仿真的变负荷工况下往复压缩机动态特性研究

针对往复压缩机在气量调节工况下因多系统耦合、多参数关联导致工作模型复杂,对压缩机动态特性分析难度大的问题,本文提出了针对气量调节系统与压缩机的多系统联合仿真的建模方法,首先建立独立的调节系统各模块工作模型,利用不同模型对接端口完成子系统模型之间的数据交互,融合压缩机工作模型构建了变负荷工况下往复压缩机工作特性分析模型,...     

Valve dynamic and thermal cycle model in stepless capacity regulation for reciprocating compressor

The existing researches of stepless capacity regulation system by depressing the suction valve for reciprocation compressor always adopt hypothesis that the compressor valves are open or close instantaneously, the valve dynamic has not been taken account into thermal cycle computation, the influence of capacity regulation system on suction valves dynamic performance and cylinder thermal cycle operation has not been considered. This paper focuses on theoretical and experimental analysis of the valve dynamic and thermal cycle for reciprocating compressor in the situation of stepless capacity regulation. The valve dynamics equation, gas forces for normal and back flow, and the cylinder pressure varying with suction valve unloader moment during compression thermal cycle are discussed. A new valve dynamic model based on L-K real gas state equation for reciprocating compressor is first deduced to reduce the calculation errors induced by the ideal gas state equation. The variations of valve dynamic and cylinder pressure during part of compression stroke are calculated numerically. The calculation results reveal the non-normal thermal cycle and operation condition of compressor in stepless capacity regulation situation. The numerical simulation results of the valve dynamic and thermal cycle parameters are also verified by the stepless capacity regulation experiments in the type of 3L-10/8 reciprocating compressor. The experimental results agree with the numerical simulation results, which show that the theoretical models proposed are effective and high-precision. The proposed theoretical models build the theoretical foundation to design the real stepless capacity regulation system.     

往复压缩机压缩和膨胀热力过程研究

根据变质量热力学的基本原理，建立了在气体泄漏和不稳定传热耦合作用下的往复压缩机气体压缩和膨胀热力过程的数学模型，采用计算机对其进行数值求解，并分析讨论了传热、质量泄漏及其耦合作用对气体压缩和膨胀热力过程的影响。通过与实验测试结果的比较证明了所建立的压缩和膨胀过程数学模型的正确性，有助于更精确的描述往复压缩机的压缩和膨胀过程。     

基于VC++的往复压缩机气阀运动规律计算机模拟

在分析和研究往复压缩机气阀运动规律数学模型的基础上，利用Visual C 编制模拟程序，显示模拟计算结果并绘制了阀片的位移－角度曲线。此程序具有使用简便，形象生动且直观的特点。     

三腔旋叶式压缩机设计

从两腔旋叶式压缩机气缸型线、叶片运动、排量分析入手,找出叶片运动及排量较优的气缸型线。并以此气缸型线为基础,设计出三腔旋叶式压缩机。在代价不高的条件下,大幅度提高其排量,以便扩大旋叶式压缩机的应用范围。