变压器油净化处理的目的是什么? - 山东变压器油哪家好

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变压器油净化处理的目的是什么?

发布时间2019-08-13  来源:http://www.wunqdctk.com

  变压器油净化处理的目的
  Purpose of Purification Treatment of Transformer Oil
  为了保证新油和运行油的质量,净化处理是一种常见而重要的手段。变压器油净化后一方面可以去除水分,改善绝缘油的介电强度和透平油破乳程度,并减少石油降解率,另一方面也可以除去机械杂质混油和石油降解后产生的污泥沉淀,避免油系统阻塞由于散热不好,可以防止磨损的机械杂质的设备。
  In order to ensure the quality of new oil and running oil, purification treatment is a common and important means. On the one hand, transformer oil can remove moisture, improve dielectric strength of insulating oil and demulsification degree of turbine oil, and reduce oil degradation rate. On the other hand, it can also remove mechanical impurity mixtures and sludge precipitation after oil degradation, so as to avoid blocking of oil system due to poor heat dissipation, which can prevent wear and tear of Mechanical impurity equipment.
  2变压器油预处理
  2 Transformer Oil Pretreatment
  变压器油的预处理方法一般分为沉降法、过滤法(压力式和真空式)和离心分离法三种。
  The pretreatment methods of transformer oil are generally divided into sedimentation method, filtration method (pressure type and vacuum type) and centrifugal separation method.
  1)解决方法
  1) Solutions
  沉降法又称重力沉降法,是利用重力在浑浊液体中沉降固体和液体颗粒的原理,去除油中的杂质和水。采用沉淀法提纯简单易行,不需要越来越复杂的设备。但这种净化方法并不彻底,只能除去油中的大部分水,并能自然地将混合物降下来。因此,一般的沉降法只能作为预处理。预处理后的油缩短了时间,保证了产品质量,降低了净化成本。
  Settlement method, also known as gravity settling method, is to remove impurities and water from oil by using the principle of gravity settling solid and liquid particles in turbid liquids. Precipitation method is simple and easy to purify without more and more complicated equipment. But this purification method is not thorough, it can only remove most of the water in the oil, and can naturally drop the mixture. Therefore, the general settlement method can only be used as pretreatment. The pretreated oil shortens the time, guarantees the product quality and reduces the purification cost.
  2)过滤方法
  2) Filtration method
  压滤纸过滤法,压滤法所使用的设备称为压滤机,又称框板滤油机。利用齿轮泵的压力使油通过具有吸附过滤功能的油滤纸,除去变压器油中的水分、细小杂质和水溶性酸,使变压器油得到净化。使用压力滤油器时应注意以下问题。
  Pressure filter paper filtration method, pressure filter method used by the equipment known as filter press, also known as frame plate oil filter. The pressure of gear pump is used to make the oil pass through the oil filter paper with the function of adsorption and filtration, remove the moisture, fine impurities and water-soluble acids in the transformer oil, and purify the transformer oil. The following problems should be paid attention to when using pressure oil filter.
  滤纸在使用前应干燥,这样可以提高吸水率。同时,滤纸在烘烤时应特别小心,以免失火。如果变压器油中含有大量的水和杂质,应采用沉降法或离心滤油器进行处理,然后用压力滤油器进行过滤。在过滤过程中,应避免滤纸纤维被放入油中。油过滤开始后5 ~ 10min内,从滤油机中提取的油应重新导向油泵进口进行循环过滤。为了降低粘度,提高过滤速度和效率,应将油温提高到40 ~ 45℃。
  The filter paper should be dried before use, so as to improve water absorption. At the same time, the filter paper should be carefully baked in order to avoid fire. If transformer oil contains a large amount of water and impurities, it should be treated by sedimentation method or centrifugal filter, and then filtered by pressure filter. In the process of filtration, filter paper fibers should be avoided from being put into oil. Within 5 to 10 minutes after the start of oil filtration, the oil extracted from the oil filter should be redirected to the inlet of the oil pump for cyclic filtration. In order to reduce the viscosity and improve the filtration speed and efficiency, the oil temperature should be raised to 40 - 45 C.
山东变压器油
  3)真空过滤法
  3) Vacuum filtration
  真空过滤法是利用真空滤油器,即变压器油在高真空、不太高温度下雾化,以提取油中微量的水和气体。由于真空滤油器也有过滤网,它还可以除去一些固体杂质。它不仅比压力过滤法经济,而且具有较高的净化程度和效率。它能去除油品中的微量水分,最大限度地提高绝缘油的强度,降低油耗。当变压器油因故障闪点下降,可燃气体析出时,可通过真空净化恢复闪点。
  Vacuum filtration is to extract trace water and gas from oil by atomizing transformer oil under high vacuum and low temperature. Because vacuum filters also have filters, they can remove some solid impurities. It is not only more economical than pressure filtration, but also has higher purification degree and efficiency. It can remove trace moisture in oil, maximize the strength of insulating oil and reduce fuel consumption. When the flash point of transformer oil decreases due to faults and flammable gas precipitates, the flash point can be recovered by vacuum purification.
  4)离心的方法
  4) Centrifugal method
  离心分离是利用油、水和杂质在密度上的三种,离心力在离心机旋转时产生的分离和提纯作用。油是最轻的,集中在旋转滚筒的中心,而水的密度足够留在油的外层。变压器油中固体杂质最严重地残留在最外层,达到了分离纯化的目的。该方法具有较高的原油净化效率。只要油中含有较多的水和机械杂质,就可以使用。特别是对油中矿渣、碳颗粒等杂质的去除效果较好,但这种方法有其局限性,只能用于去除比油密度大的杂质。
  Centrifugal separation is the use of oil, water and impurities in the density of the three, centrifugal force in the centrifuge rotation of the separation and purification effect. Oil is the lightest, concentrated in the center of the rotary drum, and the density of water is enough to remain in the outer layer of the oil. The solid impurities in transformer oil reside most seriously in the outer layer, which achieves the purpose of separation and purification. This method has high crude oil purification efficiency. As long as the oil contains more water and mechanical impurities, it can be used. Especially for the removal of slag, carbon particles and other impurities in oil, but this method has its limitations and can only be used to remove impurities with higher density than oil.
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