空压机叶轮喷水冲洗系统的应用

以邯钢动力厂的VK50-3型空压机为例,介绍了叶轮喷水冲洗系统的工作原理和流程,并通过两次对空压机叶轮喷水冲洗的操作实践,总结了叶轮喷水冲洗具有降低空压机的轴振动值和提高其空气处理量的作用。     

DH90型空压机振动分析及处理

DH90型空压机由于振动超标致使其运行周期缩短,经过对设备故障原因进行分析,提出有效的处理及改造方案,达到了预期效果.     

太钢730t/d空分设备空压机叶轮冲洗系统

为了提高空压机的效率、降低轴振动 ,太钢 730t/d空分设备配套的空压机采用了叶轮冲洗系统。介绍了叶轮冲洗的程序和冲洗后的效果     

H830型空压机叶轮开裂事故的分析与处理

介绍了H830型空压机叶轮开裂事故的发生及处理过程 ,并根据现场具体情况及相关数据对事故原因进行了分析     

空压机叶轮结垢原因及处理措施

通过对新空分装置空压机近年来运行和故障的分析,得出造成空压机叶轮结垢的主要原因是机组进口过滤器的过滤效果差、空压机级间管道和冷却器内壁锈蚀。分析引起故障的原因,并采取相应的措施,实现空压机长周期稳定运行。     

4TYD112型空压机增设水冲洗装置的应用试验

因为叶轮和冷却器气侧积灰,4TYD112型空压机运行中出现排气量减小和排气压力下降的现象,不能满足工艺要求。通过在空压机的进口流道上增设水冲洗装置,对叶轮和一级冷却器的气侧进行水冲洗,达到了增加空压机排气量和提高排气压力的目的。     

DH63-32型离心空压机检修总结

介绍豫光金铅制氧厂DH63-32型离心空压机检修前存在的排气量减少、级间冷却器阻力增大和轴振动值偏高等问题及原因,阐述空压机存在的机械故障及其处理措施,最后总结了空压机检修经验。     

L5.5型空压机一级冷却器改造

<正>我厂氮氧站有台 L5．5-16/50型空压机,一级冷却器出口温度严重超标。按规定,空气经一级冷却后。其温度上限不得超过45℃,可实际高达68℃。气体冷却不下来,油水分离不出来,空气中润滑油在热空气氧化作用下形成碳化物,积在排气管内壁上,这种碳化物逐渐增多便形成积炭层。连续运转120小时,二级气缸排气阀上积炭就厚达 4mm。二级排气管曾     

L型空压机气缸无油润滑技术改造介绍

介绍配150m3/h制氧机的L型空压机气缸改无油润滑的情况:增设中间体、刮油环、挡油盘;导向环与活塞环用四氟材料,活塞为组合结构;设置四氟密封环,提供二级排气管道。并提出操作要求。改造后空压机投运情况良好,改造基本成功。     

空压机二级振动异常的原因分析与处理

介绍一起空压机二级振动异常的故障,分析了故障原因,通过安装空压机叶轮在线清洗系统解决了叶轮结垢问题,保证空压机安全运行。     

大型空分设备配套压缩机组双油泵控制技术的可靠性改进

邯钢气体厂35000 m3/h空分设备配套压缩机组双油泵系统的仪电控制联络和DCS系统控制逻辑方面存在隐患,影响压缩机组安全、可靠运行。分析隐患及其影响,阐述采取的优化措施。     

Determination of flow parameters on injection of water into compressed air

We examine the state of a medium after injection of water into compressed air and we present a method of evaluating the flow parameters. The results are illustrated with tables and graphs.     

A comparison of SRM and Globoid type screw compressors

A study is presented of two similar types of compressors belonging to the same family, ie positive displacement, oil-injected compressors. They were both screw compressors, one of the SRM type and the other of the Globoid type. The comparison was made between two compressors with the same swept volume. The compressor geometry and losses were analysed theoretically. This analysis showed that SRM compressors have certain advantages which should result in better efficiency. It has been shown elsewhere¹⁷ that results of test runs verify the results of the theoretical comparison.     

涡旋压缩机在热泵热水器中的应用

热泵热水器以制取热水为目的，有别于普通制冷或空调设备。热泵热水器运行时冷凝温度和冷凝压力很高，对压缩机的可靠性和应用技巧提出了较高要求。涡旋压缩机以其可靠性好、效率高，在热泵热水器中得到了大量应用。     

PSA制氧用空压机的选型与设计

列述了变压吸附 (PSA)制氧机之空压机设计中要重视的八个环节 :要无油润滑、空气量要恰当、要能适应电压波动、噪声要低、水分要吹除、要注意环境条件、可靠性要高、选型要好。     

车用空调制冷压缩机性能测试软件的研制

介绍了车用空调制冷压缩机性能试验原理及方法,在此研究基础上依据相关标准编程实现与典型试验装置相配套的性能测试软件.软件较客观全面地体现了相关标准的各项要求,具有一定的智能化、人性化等特点,并且在相关行业中得到应用;同时对软件的不足之处进行了详细分析,提出了具有针对性的完善方案.应用结果证明软件可靠,具有良好的应用市场和前景.     

Friction losses in rolling piston type rotary compressors. III

The present Paper is concerned with a rolling piston type rotary compressor for air conditioning use. The leakage through clearances between rolling piston faces and cylinder head walls is analysed theoretically and experimentally. The leakage decreases volumetric efficiency and increases power consumption of the compressor.     

Scroll compressors using gas and liquid injection: experimental analysis and modelling

The first part of this paper presents an experimental analysis of different hermetic scroll compressors using different methods of injection: the first one is without injection, the second one uses vapor injection and the third one liquid injection. The analysis reveals the influence of these methods on the compressor behavior. A simplified model of the scroll compressor is then proposed that takes into account not only the different internal processes but also the refrigerant injection. It assumes that the refrigerant mass flow rate is affected by a heating-up due to a uniform wall temperature. This fictitious wall is supposed to gain heat from the electromechanical losses and from the discharged gas and to loose heat to the suction and to the ambient. The compression step is considered isentropic up to the adapted pressure and then at constant volume until the discharge pressure. The model is able to compute variables of first importance like the mass flow rate, the electric power and the discharge temperature, as well as secondary variables as suction heating-up, discharge cooling-down, and ambient losses. The validation based on 45 experimental results shows excellent results.