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  • 由润滑问题引起的谷轮涡旋压缩机轴承损坏有哪几种情况?
  • 本站编辑:高伦制冷发布日期:2018-07-09 21:23 浏览次数:
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谷轮涡旋压缩机的电机抱轴,轴承损坏的根本原因是润滑问题。又分以下几种情况:
The root cause of the bearing damage is the lubrication problem. The following are the following cases:
1、 润滑油不够,或者系统回油有问题,在这种情况下,轴承得不到充分润滑,轴承磨损加剧,比较终导致电机抱轴。因此,一般要求冷冻油与制冷剂的质量比大于0.35,否则就要补充冷冻油。另外,压缩机的现场替换也会造成冷冻油的流失或是变质,这时就需要补充部分冷冻油。
1, the lubricating oil is not enough, or the system back oil has problems. In this case, the bearing can not be fully lubricated and the bearing wear is aggravated, which eventually leads to the shaft of the motor. Therefore, it is generally required that the mass ratio of refrigerant oil to refrigerant is greater than 0.35, otherwise refrigeration oil will be added. In addition, the replacement of the compressor will cause the loss or deterioration of the refrigerant oil.
2、系统内有杂质进入轴承,轴承磨损或卡死,导致电机抱轴。根据有关研究人员的分析,杂质的主要成分是铜、铁、碳化物等,这主要是在生产过程中产生的,如钎焊时焊瘤或焊渣进入铜管;铜管切割时铜屑进入系统;压缩机运行过程中润滑不良会加大摩察引起的高温,而高温会导致润滑油或其他有机物的碳化;系统抽空不彻底,有水分存在,或者冷媒中水分控制不够纯,水分就会在系统中导致“镀铜”现,比较终会使系统中产生粉末状的铜铁小颗粒;工作场地不清洁,灰尘、杂质进入系统。针对这些问题,应该完善生产工艺,严格执行工艺纪律,提高工人的技术水平。
2, the system has impurities into the bearings, bearing wear or clamping, causing the motor to hold the shaft. According to the analysis of the researchers, the main components of the impurities are copper, iron, carbide and so on. This is mainly produced in the process of production, such as welding or slag entering copper pipe during brazing, and copper chips entering the system when the copper pipe is cut; the bad lubrication will lead to the high temperature caused by davatmo during the operation of the compressor, and the high temperature will lead to the lubricating oil. Or the carbonization of other organic matter; the system is not completely free, water exists, or the water control in the refrigerant is not pure. The water will lead to "copper plating" in the system, and eventually the system will produce powdered copper and iron particles; the work site is unclean, dust and impurities enter the system. To solve these problems, we should improve the production technology, strictly enforce the technological discipline and improve the technical level of workers.
3、开机前没有预热或预热时间不够,致使系统内大量的制冷剂迁移至压缩机,液态制冷剂在压缩机内积存较多,而液态制冷剂的密度比冷冻油要大,因此在压缩机底部积存的制冷剂分两层,上部是冷冻油(富油相),下部是制冷剂(富制冷剂相)。下部的制冷剂阻止冷冻油进入轴承润滑处(相当于抬高了冷冻油液面),开机启动时进人轴承润滑面的几乎全是制冷剂,因而导致润滑不良,并且泡沫状的冷冻油和液态制冷剂进人压缩室还会造成液体压缩。
3, without preheating or preheating, a large number of refrigerants in the system are migrated to the compressor, and liquid refrigerants deposit more in the compressor, and the density of liquid refrigerants is larger than that of frozen oil. Therefore, the refrigerant deposited at the bottom of the compressor is divided into two layers, the upper part is the frozen oil (oil rich phase), and the lower is refrigerated. The agent (rich refrigerant phase). The refrigerant in the lower part prevents the frozen oil from entering the bearing lubricating place (equivalent to raising the frozen oil surface), and almost all is refrigerant at the start of starting the sliding surface of the bearing, resulting in bad lubrication, and the foam like refrigerant and liquid refrigerant into the human compression chamber will also be made into liquid compression.
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