变压器油的细小微粒的组成 - 山东变压器油哪家好

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变压器油的细小微粒的组成

发布时间2018-06-28  来源:http://www.wunqdctk.com

变压器油是天然石油中经过蒸馏、精炼而获得的一种矿物油,是石油中的润滑油馏份经酸碱精制处理得到纯净稳定、粘度小、绝缘性好、冷却性好的液体天然碳氢化合物的混合物。俗称方棚油,浅黄色透明液体,相对密度0.895。凝固点<-45℃,比热容约为0.5(卡/克*度)主要由三种烃类组成,主要成分为环烷烃(约占80%),其它的为芳香烃和烷烃。在我国,变压器油有石蜡基油、环烷基油。石蜡基油产于大庆,环烷基油产于新疆克拉玛依。
Transformer oil is a kind of mineral oil obtained by distillation and refining in natural petroleum. It is a mixture of liquid natural hydrocarbons with pure stability, small viscosity, good insulation and good cooling by acid alkali refining treatment in oil. Commonly known as Fang Peng oil, light yellow transparent liquid, the relative density of 0.895. The solidification point is <-45 C, and the specific heat capacity is about 0.5 (card / gram degree) mainly composed of three hydrocarbons, the main components are naphthenic hydrocarbons (about 80%), and the others are aromatic hydrocarbons and alkanes. In China, transformer oil has paraffin base oil and naphthenic base oil. Paraffin base oil is produced in Daqing, and naphthenic base oil is produced in Karamay, Xinjiang.
良好的变压器油应该是清洁而透明的液体,不得有沉淀物、机械杂质悬浮物及棉絮状物质。如果其受污染和氧化,并产生树脂和沉淀物,变压器油油质就会劣化,颜色会逐渐变为浅红色,直至变为深褐色的液体。当变压器有故障时,也会使油的颜色发生改变一般情况下,变压器油呈浅褐色时就不宜再用了。另外,变压器油可表现为浑浊乳状、油色发黑、发暗。变压器油浑浊乳状,表明油中含有水分。油色发暗,表明变压器油绝缘老化。油色发黑,甚至有焦臭味,表明变压器内部有故障。
山东变压器油
A good transformer oil should be a clean and transparent liquid, and no precipitate, mechanical impurities, suspended solids and cotton like substances must be allowed. If it is polluted and oxidized and produces resins and precipitates, the oil of the transformer will deteriorate, and the color will gradually turn to light red until it becomes dark brown. When the transformer fails, it will also change the color of the oil. Generally speaking, when the transformer oil is light brown, it should not be used again. In addition, transformer oil can be characterized by turbidity, blackening and darkening. The oil of the transformer is cloudy and milky, indicating that the oil contains moisture. The color of the oil is dark, indicating that the transformer oil is aging. The oil is black and even smelly, indicating that there is a malfunction inside the transformer.
为什么DL/T572-95《变压器运行规程》规定油浸式变压器上层油温不许超过95℃:
Why does DL/T572-95 "transformer operation regulation" stipulate that the upper oil temperature of oil immersed transformer should not exceed 95 C?
一般油浸式变压器的绝缘多采用A级绝缘材料,其耐油温度为105℃。在国标中规定变压器使用条件最高气温为40℃,因此绕组的温升限值为105-40=65(℃)。非强油循环冷却,顶层油温与绕组油温约差10℃,故顶层油温升为65-10=55(℃),顶层油温度为55+40=95(℃)。强油循环顶层油温升一般不超过40℃。
The insulation of the general oil immersed transformer is made of class a insulating material and its oil temperature is 105 degrees. In the GB, the maximum temperature of the transformer is 40 C, so the temperature rise limit of the winding is 105-40=65 (c). The non top oil circulation cooling, the top oil temperature and the winding oil temperature is about 10 degrees Celsius, so the top layer oil temperature rises to 65-10=55 (c), the top layer oil temperature is 55+40=95 (c). The oil temperature rise in the top layer of the strong oil cycle is generally not more than 40 degrees C.
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