乙烯装置乙烯回收压缩机的更新改造

对乙烯装置中的罗茨式乙烯回收压缩机工艺参数进行分析,选用液环压缩机对原压缩机系统进行更新改造,通过计算分析,选用乙二醇水溶液作为密封冷却液,设计制造出了适合低温乙烯输送的液环压缩机,工业运行获得成功,极大地提高了乙烯回收压缩机的性能及可靠性,并创造了可观的经济效益。     

对在大型空气压缩机站中采用离心式压缩机的初步探讨

对常用空气压缩机站选用离心式压缩机或活塞式压缩机，从性能和运营成本上作了比较。     

R134a小型活塞式制冷压缩机气缸头部积炭现象的原因分析

根据理论公式及试验现象分析了R134a冰箱压缩机气缸头部积炭现象产生的原因,积炭对压缩机性能的影响,从降低气缸头部温度、提高冷冻油热稳定性,以及根据压缩机使用工况合理选用压缩机角度,提出了减少积炭现象的方法和措施。     

透平压缩机组润滑油进水的防治

阐述了透平压缩机润滑油的选用，分析了透平压缩机润滑油进水危害，全面总结了润滑油进水防治措施。     

无油螺杆压缩机与喷油螺杆压缩机的选用原则

通过对两类压缩机的工作原理、产品结构特点的分析以及压缩空气系统风险和运行成本的比较,阐述了在不同场合对压缩机选用的原则。     

全封闭型制冷压缩机冷冻机油的选用

介绍了全封闭制冷压缩机用冷冻机油的使用要求和相关技术指标，分析几个影响压缩机性能的关键指标，讨论了冷冻机油的选用原则。     

空气压缩机油的合理选用

主要介绍压缩机油的合理选用及国产压缩机油的生产情况,并对欧美现代压缩机油的现状,作了概述。     

M20氮氢气体压缩机十字头的改进

十字头体是往复活塞式压缩机的重要零件之一。它的结构型式,加工精度,材料的选用,关系着压缩机整体质量和使用寿命。 本十字头体材料选用ZG35铸钢,有足够的强度,并采用十字头体与镶有巴氏     

6D32氮氢气压缩机的技术改造与运行

氮肥企业所选用的6D32氮氢气压缩机的技术改造与运行情况，改造后提高了产量，确定了压缩机的运行，取得了满意的效果。     

一种循环氢压缩机方案选型分析

一种循环氢压缩机,具有压力高、缸径小、压缩比小的特点,如果选用常规双作用气缸,则压缩机没有反向角.需选用单作用或活塞带尾杆的双作用机组.现对两种结构压缩机的优、缺点进行比较分析.进而选择一种更适合用户的机型.     

Structure effect of refrigeration polyolester oils for use in HFC-134a compressors

A study of polyolester oils (POE) for compressors using an ozone-friendly refrigerant is presented here. The effect of the chemical structure of POE was studied in relation to three lubricant properties: miscibility with HFC-134a (CF₃-CH₂F), lubricity (steel-on-steel and aluminium-on-steel contacts), and viscosity. The paper shows the strong structure effect of POE on miscibility and lubricity. Based on the data obtained, some model lubricants were blended, and the performance of these lubricants was assessed on refrigeration test rigs.     

Lubrication of reciprocating compressors

When gases with different chemical and physical properties are compressed, the type of lubricant to be used in compressing equipment must be given careful consideration. Basically, this equipment can be categorized as reciprocating or rotary. This paper describes the lubrication of reciprocating compressors. The development of lubricants for use in specific applications, such as the compression of air, natural gas, etc., is discussed in detail. This will include a section dealing with the development and use of screening tests to predict the performance of candidate lubricants, the role of current international specifications, compressor rig tests and field applications. The advantages and disadvantages of mineral oils and synthetic fluids in various applications will also be described in detail.     

抗磨添加剂对不同服役阶段润滑油摩擦学性能的影响

采用黏度测试仪测定新油及3种不同服役阶段润滑油的黏度,采用UMT-II摩擦磨损试验机考察其摩擦学性能,并同时考察3种在用润滑油添加抗磨添加剂后的摩擦学性能。研究结果表明:润滑油的黏度随着运行里程数的增加呈现先降后增的趋势;随润滑油运行里程数的增加,润滑油的摩擦因数增大,导致试验钢球的磨损量也增加;抗磨添加剂对不同服役阶段的润滑油的抗磨性能影响程度不同,在磨合磨损期和正常磨损期,加入抗磨添加剂后并不能改善润滑油的抗磨性能,而在异常磨损期,抗磨添加剂的加入可较好地改善润滑油的抗磨性能。     

沼气压缩机N68机油变质失效诊断及改进

对沼气压缩机润滑油变质失效问题进行了系统诊断分析，从设备、工艺、失效润滑油理化检测、沼气组分特性、润滑油特点出发，分析了其内部缺陷。结合容积压缩机工作特点，对工艺流程、润滑油选配进行了改进。     

不对称润滑工况下碰摩转子-轴承系统的动力学分析

在考虑非线性油膜力的基础上，建立了具有碰摩故障的转子一轴承系统的动力学模型。研究了具有碰摩故障的转子在两支承轴承使用相同和不同粘度润滑剂时的动力学行为，发现随着一端轴承润滑油粘度的降低，转子的混沌区域和拟周期区域扩大了。该结果为采用不同粘度润滑剂的转子一轴承系统的故障诊断提供了依据。     

冷冻机械油真空干燥过程中真空度变化对比试验研究

分析了冷冻机械油在空调压缩机制造过程中的应用条件和实验设备，采用对比实验方法进行了两种冷冻机械油在相同环境下的真空干燥试验，对真空度的影响进行了评价和比较，分析了相同物理性能的冷冻机械油对真空干燥过程中真空度的影响因素。通过验证，指出了工程中关于物理性能相同的油品其真空分离工艺参数相同的结论是错误的。实验结果表明，空凋压缩机生产过程中油水真空分离工艺参数必须考虑被分离油品的个异特性。     

Tribological Study Comparing PAG and POE Lubricants Used in Air-Conditioning Compressors under the Presence of CO2

Polyalkylene glycol (PAG) and polyolester (POE) synthetic lubricants are good candidates for air-conditioning systems that work with alternative refrigerants such as carbon dioxide (CO₂). Both synthetic lubricants are widely used in air-conditioning compressors and have been optimized for use with hydrofluorocarbon (HFC) refrigerants. However, it is still not clear which lubricant is more suitable for use in compressors operating with CO₂ as a refrigerant. This study compares the performance of PAG and POE lubricants of the same viscosity (ISO VG 68) used in air-conditioning compressors. The materials used were Al390-T6 disks and hardened steel SAE 52100 pins. The tests were performed using a high pressure tribometer (pin-on-disk configuration) in the presence of CO₂. The results showed that scuffing and wear resistance of Al390-T6 tested with PAG were superior compared to the samples tested with the POE lubricant. Chemical analysis using X-ray photoelectron spectroscopy showed that PAG tends to promote the formation of carbonate layers on the surface, leading to improvement in the tribological performance of the interface.     

Viscosity and working efficiency analysis of soybean oil based bio-lubricants

This article presents significant data about viscosity and working efficiency analysis for developing the soybean oil based bio-lubricants. A suitable viscosity or viscosity index (VI) plays a very important role in a lubricant, which can avoid collision and rubbing between components of mechanical devices in work as well as optimize working efficiency of a machine. In general, low friction between devices can increase working efficiency of a machine, but low viscosity of a lubricant will easily cause collision and rubbing between components of mechanical devices in work. A too viscous lubricant also requires a large amount of energy to move, but a too thin lubricant will easily cause rubbed devices and increased friction. To replace the mineral oils and syntholubes, the soybean oil is recently become one of the most actively studied oils due to its eco-friendly organic property and lower cost. This work used mixtures of the original soybean oil, the epoxidized soybean oil, and the hydrogenated soybean oil as the base oils. Applications are focused on developing engine bio-lubricants. The results show that the epoxidized soybean oil has extremely large viscosity in comparison with the engine lubricants as well as the original soybean oil, whereas the hydrogenated soybean oil is clearly opposite. This viscosity analysis offers good informations to fit viscosity of the engine lubricants by mixing the three soybean oils as base oils.     

海洋平台往复压缩机组脉动和振动控制方法

往复压缩机在海洋平台上大多数用于天然气的增压和外输,重要性较高,其振动控制是往复压缩机选型设计中的重要问题。由于平台的结构特点,对压缩机整撬的重量有限制,不能照搬陆地上的振动控制方法,一般选择不平衡力平衡得较好的对称平衡型机组,从压缩机在平台上的安装方位,压缩机安装处的结构强度,撬底座设计,管道及气体缓冲设计等方面考虑,确保往复压缩机在海洋平台上的正常运行。