共查询到20条相似文献,搜索用时 46 毫秒
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滑动轴承是活塞式压缩机的主要部件,直 接关系到机器的质量、使用寿命和可靠性。利 用计算机合理选择动压润滑轴承的配合间隙及 有关设计参数,不但大大缩短压缩机设计周 期,更重要的是有效地保证了压缩机的质量。 一、设计内容 1.数据输入见表1。 相似文献
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在气阀开启和关闭时间,以及在气阀应当完全开启,但实际上闭合元件是在阀座和升程限制器间作振荡的期间,气阀的闭合元件和弹性元件的运动特征,对所有的压缩机气阀工作的经济性与可靠性均具有较大的意义。 相似文献
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采用小波动理论,转移系数法编制压缩机管道中气流脉动的计算程序,以供设计压缩机管道及改善管道振动的有关工程人员使用。 相似文献
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介绍一套适用于从事设计、研究和使用活塞压缩机的工程技术人员在微机上进行产品设计计算或产品改造计算的软件包. 相似文献
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在有阀片和弹簧的气阀中,当阀片还未触及升程限制器时,气阀的开启及其阻力决定于弹簧力。对于完全开启的气阀,阀片位置不决定弹簧,而是升程限制器,因为作用在气阀上克服弹簧力的压力差将阀片压向升程限制器。此时,压力降决定于完全开启的气阀当量面积最大值。依赖气阀压力降的当量面积变化曲线即是气阀的静力学特性。 相似文献
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在升程限制器内存在封闭的气体缓冲器腔室(简称缓冲腔)是具有气体缓冲器的气阀的特征。缓冲腔中,配置有几个单独的螺旋形或扁平形弹簧。 相似文献
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5.1 阀的气密度对压缩机工作的影响 自动阀在闭合状态决无绝对的气密性。通过闭合气阀的气体泄漏,对压缩机工作指标产 相似文献
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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。 相似文献
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随着石化行业装置的大型化,往复压缩机的管线振动问题成为困扰整机性能的关键。通过对相关脉动抑制装置的作用机理的分析,提出了不同类型脉动抑制装置的使用注意事项。分别列举了缓冲器和孔板在实际工程整改中的不同作用特性。 相似文献
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Young Ju Bae Jong-Bong Kim Jin Kook Kim Young June Chang 《Journal of Mechanical Science and Technology》2008,22(7):1391-1399
Due to environmental issues, the development of low energy consumption products has become one of the main topics in the home
appliance industry. The energy consumption of a refrigerator depends on the efficiency of its compressor as well as on the
refrigerator cycle design, such as the capacity modulation. This study features the design of a novel capacity modulation
reciprocating compressor, i.e., two-step capacity modulation (TCM). In a TCM compressor, capacity modulation is achieved by
changing the dead volume in the cylinder. Instead of a concentric sleeve, an eccentric sleeve is used to change the dead volume
for the clockwise and counterclockwise rotation of a motor. For stable capacity modulation, a new latching system with a key,
a spring, and an eccentric sleeve is introduced, and the mode change reliability is verified by dynamic analysis. 相似文献
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The reciprocating compressor has widely been used in the industry because of low cost to mass production and high efficiency of performance. If an abnormal compressor is produced, high service cost occurs due to the increased service claim rate (SCR). A great deal of research has been conducted for real-time diagnosis of the compressor while it is being made in the manufacturing line. However, since the compressor structure is quite complicated, it is still difficult to find the cause of the compressor fault. Even with outstanding diagnostic tools, it is hard to screen an abnormal compressor at one time. We have developed a multi-stage diagnosis scheme to monitor the abnormal compressor. In this diagnosis scheme, the dynamic time warping (DTW) technique is employed to diagnose the fault compressor. The LAN based network is applied for connecting from first diagnosis PC to second diagnosis PC. The multi-stage diagnosis manufacturing line is established and the DTW technique has been successfully implemented in the diagnostic system. The multi-stage DTW system screens most of the abnormal compressor. The gage R&R is conducted to secure the reliability of the system. 相似文献
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该文以冶金工业中普遍使用的D-100/8-e3型往复活塞式空压机为实例,论述了往复活塞式空压机的自动化变频控制技改方法,以及实施变频控制技改技术后,所达到的显著节能降耗效果。 相似文献