山东变压器油为什么要进行过滤? - 山东变压器油哪家好

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山东变压器油为什么要进行过滤?

发布时间2019-07-18  来源:http://www.wunqdctk.com

  过滤的目的是去除油品中的水分和杂质,提高油品的电阻,保护油品中的纸绝缘,在一定程度上改善油品的理化性能。
  The purpose of filtration is to remove moisture and impurities from oil products, improve the resistance of oil products, protect paper insulation in oil products, and to some extent improve the physical and chemical properties of oil products.
  配电变压器大多安装在露天,绝缘油(变压器油)受外界杂质影响,与空气接触及设备本身工作温度较高,使油的质量逐渐变差。绝缘油(变压器油)变质后不会发挥其应有的绝缘、冷却作用。为防止油品质量恶化影响油品的安全运行,在配送期间对正常运行的油品生产样品进行检测分析,并根据分析结果对油品进行处理。配电运行中油品化学监督检查期限至少为3年。常规测试项目包括酸值、水溶性酸、闪点、击穿电压、外观。
  Distribution transformers are mostly installed in the open air. Insulation oil (transformer oil) is affected by external impurities, and its working temperature is higher when it contacts with air and the equipment itself, which makes the quality of oil worse gradually. The insulation oil (transformer oil) will not play its due role of insulation and cooling after deterioration. In order to prevent the deterioration of oil quality from affecting the safe operation of oil products, the normal oil production samples were tested and analyzed during the distribution period, and the oil products were processed according to the analysis results. The period of chemical supervision and inspection for oil products in distribution operation is at least 3 years. Routine test items include acid value, water soluble acid, flash point, breakdown voltage and appearance.
  应注意的是:如果设备经常负载高负荷,应在规定的试验周期的基础上,增加检查次数;如果检测项目的某些指标明显接近控制的极限值,也应增加检测频率;由于操作油的质量随老化程度和油中所含杂质的不同而有很大的差异,通常不可能仅通过一个测试项目来评价油的质量。根据所测得的主要特征指标进行综合分析。
  It should be noted that if the equipment is often under heavy load, the number of inspections should be increased on the basis of the prescribed test cycle; if some indicators of the inspection items are obviously close to the limit value of control, the frequency of inspection should also be increased; because the quality of the operating oil varies greatly with the aging degree and the impurities contained in the oil, Usually it is not possible to evaluate the quality of oil only through a test project. According to the main characteristic indicators measured, a comprehensive analysis is made.
  1. 酸值超限值大于0.1mgkoh /g。超限原因有四种:超负荷运行;抗氧化剂消费;加错油了;油被污染了。可以采取以下对策酸值超过限值:调查原因,增加测试数量,确定抗氧化剂和补充适当的内容,进行变压器油的再生治疗,并取代石油,如果它是经济合理的。
  1. The acid value exceeding the limit is more than 0.1 mgkoh/g. There are four reasons for exceeding the limit: overload operation; consumption of antioxidants; misfilling; oil pollution. The following countermeasures can be taken: investigating the causes, increasing the number of tests, determining antioxidants and supplementing appropriate content, treating transformer oil regeneration and replacing oil, if it is economical and reasonable.
山东变压器油
  2. 水溶性酸的超限值小于4.2。超限的原因有二:一是油品老化;油被污染了。对于水溶性酸超标,可以采取以下对策:增加试验次数,并与酸值进行比较,找出原因。进行油的再生处理,如果经济合理可以做换油处理。
  2. The exceeding limit value of water-soluble acid is less than 4.2. There are two reasons for exceeding the limit: one is the aging of oil products; the oil is polluted. For water-soluble acids exceeding the standard, the following countermeasures can be taken: increase the number of tests, and compare with the acid value to find out the reasons. Oil regeneration treatment can be done if the economy is reasonable.
  3.其击穿电压超限小于20KV。超标的原因有两个:一是油品含水过多;油被杂质颗粒污染了。对于击穿电压超标可以采取以下对策:查明原因,进行真空滤油器处理,板框压力滤油器处理或更换新油。ZJB真空滤油器的击穿电压一般在50KV以上。
  3. Its breakdown voltage is less than 20KV. There are two reasons for exceeding the standard: one is that there is too much water in the oil; the oil is polluted by impurity particles. For breakdown voltage exceeding the standard, the following countermeasures can be taken: to find out the reasons, vacuum oil filter treatment, plate and frame pressure oil filter treatment or replacement of new oil. The breakdown voltage of ZJB vacuum oil filter is generally over 50 KV.
  4. 闪点极限小于130℃。或比前一个测试值低5℃。超标原因有二:设备局部过热故障;错误的石油。超过闪点限值可以采取以下对策:找出原因,排除故障;真空滤油除气处理,或换油处理。
  4. The flash point limit is less than 130 C. Or 5 C lower than the previous test value. There are two reasons for exceeding the standard: partial overheating failure of equipment; wrong oil. Over the flash point limit, the following countermeasures can be taken: find out the causes, troubleshooting; vacuum oil degassing treatment, or oil exchange treatment.
  外观如外观油不透明,可见杂质或悬浮物。或油色过深,油品外观不正常。出现异常现象的可能原因包括油、纤维、炭黑等固体中含有水分。对于外观异常的油品,应采取以下措施:油品模糊、浑浊、呈白色,说明油品含水,应检查含水情况。如果在油品中发现碳颗粒,油品颜色变黑,甚至有焦炭的气味,可能是内部电弧或局部放电故障,应结合其他试验,查找原因,排除故障。如果油颜色是黑暗和油的颜色明显变化,要注意是否加速老化的石油,可以结合油的酸值测试分析,或加强油的工作温度的监测。
  Appearance such as oil opaque, visible impurities or suspended matter. Or oil color is too deep, oil appearance is abnormal. The possible causes of abnormal phenomena include the presence of water in solids such as oil, fibers and carbon black. For oil products with abnormal appearance, the following measures should be taken: oil products are blurred, turbid and white, indicating water content of oil products, water content should be checked. If carbon particles are found in the oil, the color of the oil turns black, or even the smell of coke, which may be internal arc or partial discharge fault, it should be combined with other tests to find out the cause and remove the fault. If the color of the oil is dark and the color of the oil changes obviously, we should pay attention to whether accelerating the aging of the oil, we can combine the acid value test and analysis of the oil, or strengthen the monitoring of the working temperature of the oil.
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