如何提高变压器油的绝缘强度? - 山东变压器油哪家好

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如何提高变压器油的绝缘强度?

发布时间2019-03-28  来源:http://www.wunqdctk.com

为提高变压器油的绝缘强度、介质损失系数等指标,变压器油在注入油箱之前,必须进行处理,以脱除油中的水分、气体和杂质。在实际应用中,我们对于不同类型的变压器油进行针对性的处理,效果比较好。
  In order to improve the insulation strength and dielectric loss coefficient of transformer oil, the transformer oil must be treated before it is injected into the tank to remove moisture, gas and impurities in the oil. In practical application, we have targeted treatment for different types of transformer oil, the effect is better.
  1、对于一般被水和尘埃等杂质污染的变压器油,可以使用板框式压力过滤机,经过多次循环过滤,通常能够达到要求。它的原理就是利用滤油纸吸收水分、过滤杂质。因其构造简单、搬运方便,也得到广泛应用。缺点是过滤不彻底,对细微杂质去除效果不好,而且成本也比较高,当水分大时,滤油纸需频繁更换。
  1. For transformer oil polluted by impurities such as water and dust, plate-and-frame pressure filters can be used and filtered repeatedly, usually meeting the requirements. Its principle is to use oil filter paper to absorb water and filter impurities. Because of its simple structure and convenient handling, it has also been widely used. The disadvantage is that the filtration is not complete, the removal effect of fine impurities is not good, and the cost is relatively high. When the moisture is large, the oil filter paper needs to be replaced frequently.
  2、现在普遍采用的是真空滤油机,它不仅能彻底去除油中水分和气体,而且能有效去除微小杂质。其工艺流程是:待处理变压器油→粗过滤→精过滤→加热油真空脱水脱气→净油。粗过滤采用金属滤网和强磁铁,精过滤通常过滤1~μm微小杂质。
  2. Vacuum oil filter is widely used nowadays. It can not only completely remove water and gas in oil, but also effectively remove minor impurities. The process flow is as follows: transformer oil to be treated coarse filtration fine filtration vacuum dehydration and degassing of heating oil pure oil. Coarse filtration uses metal filter and strong magnet. Fine filtration usually filters 1 to micron impurities.
  目前精过滤器的种类很多,有金属粉末烧结材料、金属微孔材料、陶瓷滤材以及采用特殊结构的滤纸滤蕊等。
  At present, there are many kinds of fine filter, such as metal powder sintering material, metal microporous material, ceramic filter material and filter paper with special structure.
  变压器油加热抽真空脱水脱气。其原理是把油罐内抽真空,将加热的变压器油用喷淋方法形成油雾,而使油中的气体和水分逸出。油温一般在65℃左右,不要太高,以免使油老化。这种方法脱水脱气效果比较好,是目前较普遍采用的方法。但是,如果油被喷成十分细小的雾状,则易被真空泵抽走。
  Transformer oil is heated and degassed by vacuum dehydration. The principle is to vacuum the oil tank and spray the heated transformer oil to form oil mist, so that the gas and water in the oil escape. Oil temperature is generally around 65 C, not too high, so as not to make the oil aging. The dehydration and degassing effect of this method is better, and it is widely used at present. However, if the oil is sprayed into a very fine mist, it is easy to be pumped away by a vacuum pump.
山东变压器油
  如果油被喷成具有一定直径的油珠 ,则由于油珠具有较高的界面张力,使得油珠内的水分和气体不易充分发挥。为此,喷汕孔的直径要选择适当,并且一般需在罐的抽空口处设置几道挡板,防止变压器油被真空泵抽走。
  If the oil is sprayed into oil droplets with a certain diameter, the water and gas in the oil droplets can not be fully utilized due to the high interfacial tension of the oil droplets. For this reason, the diameter of the spray hole should be selected appropriately, and several baffles should be installed at the suction opening of the tank to prevent the transformer oil from being pumped away by the vacuum pump.
  3、被污染的变压器油的处理方法。被污染的变压器油(俗称污油),是指被混有极微小的杂质与油的分子相结合而形成的胶体污染的变压器油,以及经多年使用过的变压器油,一般为返修产品放出的油(此油的pH值已很低)。对这种污油则必须采用吸附的方法处理才能改善油的指标。
  3. Treatment of contaminated transformer oil. Polluted transformer oil (commonly known as dirty oil) refers to the colloidal contaminated transformer oil formed by the combination of extremely small impurities and oil molecules, and the transformer oil used for many years, which is generally the oil released from the repaired products (the pH value of this oil is very low). For this kind of waste oil, it must be treated by adsorption to improve the oil index.
  在处理过程中应定时监测,来判定吸附效果 ,当吸附效果不明显时,即应考虑更换硅胶。一般硅胶用量按重量计约占油的3%~5%。污油处理系统应与新油处理系统分开,以免交叉污染。装用过污油的罐、容器等,必须经过彻底清洗后才能再用于正常生产的油系统。
  In the process of treatment, regular monitoring should be carried out to determine the adsorption effect. When the adsorption effect is not obvious, the replacement of silica gel should be considered. Generally, the amount of silica gel used by weight accounts for about 3%-5% of the oil. The waste oil treatment system should be separated from the new oil treatment system in order to avoid cross-contamination. Tanks and containers that have used dirty oil must be thoroughly cleaned before they can be used in normal production of oil systems.
  更多山东变压器油的相关信息可以点击我们的官网进行咨询:http://www.wunqdctk.com
  More information about Shandong transformer oil can be consulted by clicking on our official website: http://www.wunqdctk.com
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