共查询到19条相似文献,搜索用时 140 毫秒
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针对目前航空兵部队在实施液压油、滑油的加添过程中存在的不足,设计制作一种新型的液滑加油车,该车能同时为飞机液压和滑油系统补充油液.并简要介绍了该车的结构、工作原理、使用方法、注意事项及污染度检查周期. 相似文献
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航空滑油系统设计与性能分析研究现状与进展 总被引:2,自引:0,他引:2
介绍了航空滑油系统的组成及工作原理,对滑油系统传统的设计方法进行了回顾,重点阐述了直升机滑油系统的部件设计方法;对滑油系统流量、压力、温度特征性能以及滑油系统综合性能的分析研究成果进行了总结,提出了滑油系统耦合设计和多因素动态耦合仿真分析的研究方向. 相似文献
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本文针对某型发动机滑油系统滑油压力低故障,依据发动机滑油系统的工作原理、故障模式和故障影响,分析了造成发动机滑油系统压力低故障的根源,提出了解决该故障的措施,并通过试验验证了解决措施的有效性,有效的解决了发动机滑油系统滑油压力低故障。 相似文献
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船舶滑油管路在安装完成后要将主机外部的滑油管道、设备及主机内部冲洗干净,以保护主机在使用过程中不被损坏,选择合适的串油工艺方法十分重要.详细介绍了传统串油工艺和化学清洗与串油相结合的具体方法和注意事项,并在时间、成本、易操作程度和效果4个方面进行对比分析,为船舶建造的串油工艺选择提供参考. 相似文献
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滑油系统是航空发动机的关键系统之一,一旦发生故障,严重影响飞行安全。滑油系统结构复杂,排故难度较大。对滑油系统进行LRU级故障树建模和分析,能够为快速定位LRU级故障源提供指导性建议。根据滑油系统工作原理、组成与运行特点,构建了以LRU级故障为底事件故障树模型,运用下行法求解故障树最小割集,采用不交化的最小割集表达式,计算滑油系统顶事件故障发生概率,以及滑油压力异常、油液污染、滑油消耗量大、滑油系统部件损坏等典型故障发生概率;在不交化最小割集矩阵中,与求顶事件概率相对应,分析LRU级故障树底事件概率重要度和相对概率重要度;通过概率重要度分析明确航空发动机滑油系统的易损部件,为日常维护与管理提供参考。 相似文献
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基于大量试飞数据,采用人工神经网络方法,建立某发动机滑油系统全工作过程的模型,包括供油压力、滑油压差、供油温度、中轴承腔回油温度、后轴承腔回油温度、滑油总回油温度等参数的模型。模型计算结果与试飞结果吻合良好,表明了该建模方法的可行性和有效性。将模型计算结果应用于发动机滑油系统的试飞状态监控,实现滑油参数实时趋势监控;将建模方法应用于润滑油参数的最大影响因素的确定,建立一种滑油系统的最大影响参数的确定方法。 相似文献
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对ALLISONB B3000-B4000七档变速箱第四代液压控制系统电磁阀和控制阀的结构与工作原理、各油路系统的组成及工作原理和各档位的控制油路进行了分析,为使用和维护该类变速箱,提供了技术帮助。 相似文献
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介绍了一种新型二硫化钼润滑油剂的研制过程。从选定润滑剂形式 ,到确定润滑剂调制思路 ,进行了有益的探索 ,并将这种润滑剂用于液压振动器高速重载轴承部位进行了实验。通过对润滑剂的调制及实验 ,证明这种产品的润滑性能优异。 相似文献
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《Wear》1986,108(3):269-283
The tribological behaviour of perfluoropolyethers (PFPEs) was investigated by performing four-ball extreme-pressure (EP), Falex, four-ball wear, Reichert, SRV (both point-plane and plane-plane contacts), Amsler and TE 77 determinations on four commercially available Fomblin Y fluids, which cover the entire viscosity range. For comparison a petroleum-based hydraulic oil was subjected to the same tests.In load-carrying capacity measurements (four-ball EP and Falex tests) the PFPEs also surpassed the hydraulic oil as an EP gear lubricant.The performances of the PFPEs in determinations of their wearpreventing characteristics were variable. They were better than the hydraulic oil in Reichert tests but behaved in a roughly identical way in four-ball wear determinations and were inferior to it in the SRV (point-plane contact) method.The irregular behaviour is due to the different severity of operating conditions. The harsh strains exerted in four-ball EP, Falex and Reichert tests led to elevated contact temperatures, thus causing the decomposition of fluorinated macromolecules. The subsequent reactions of decomposition products originated the fluoride films to which the relevant performances of PFPEs are ultimately due. As the stresses to be endured in the SRV (point-plane contacts) tests had not been so extreme, the temperature at which the thermal decomposition of PFPEs would have begun was not attained.The more fluid the grade, the better was its performance in four-ball wear tests, since a lower viscosity led to a more abundant supply of lubricant at the rubbing spots and thus to a smaller wear rate.Lubrication was hydrodynamic in SRV (plane-plane contact), Amsler and TE 77 tests, and hence no damage took place in them. Friction coefficients, which depended on both testing machine and test conditions, were slightly higher for PFPEs than for the hydraulic oil. 相似文献
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介绍了新型液力抽油装置的组成及液压驱动系统的工作原理,该装置综合了液压有杆抽油装置和水力活塞泵抽油装置两方面的优点。特别适合于开采沥青质高粘油井以及中、低产量的定向井、水平井等特殊结构的油井,也适用于开采井深超过有杆抽油系统工作范围的油井。这种抽油装置具有结构简单、制造方便、设备重量轻、便于安装等特点,因此具有很强的应用价值。 相似文献
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A significant amount of lubricating oils and greases can enter the environment, producing contamination of both soil and water. Over the last few years, pressure on lubricant producers and consumers has caused them to seek a solution involving less environmentally harmful lubricants. In Croatia, a significant quantity of lubricants is disposed of without control, polluting soil and water; as a result, lubricant producers have looked seriously at biodegradable lubricating oils and greases. This paper presents information on development of some biodegradable hydraulic oils and lubricating greases based on lithium and calcium soaps, using synthetic esters and rapeseed oil, and presents their physical and chemical properties, and their applications. 相似文献
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采油厂按照传统方法设计的为C5101A/B往复式压缩机提供润滑的XYZ-100型稀油站,管道通径选择过大,造成设备体积庞大,生产制造成本过高.提出将管径从40 mm减小至32 mm,对管径缩小后XYZ-100稀油站管道系统的流速、流动状态和液压冲击进行分析计算.采用ANSYS软件,建立XYZ-100稀油站管道中压力峰值区域三维模型,模拟优化了管径缩小后稀油站工作时液流的流动状态参数.结果表明:管径优化前后系统的供油流量和压力不变;系统不发生流态改变,阀门紊流状态发生处产生的高压力峰值和系统液压冲击产生的高压力峰值,可通过提高截止阀的压力参数来克服;优化后系统体积减小,降低了整个设备的生产制造成本. 相似文献
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