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变压器油的自身的密度的指标的特点

油品的密度用单位体积内油品的质量来表示,单位为kg/m³(或g/cm³,g/mL)。
The density of the oil product quality in unit volume of oil that the unit is kg/m (or g/cm fand, fand g/mL).
密度影响变压器油热传导率,而且还能用于确定油品是否适用于某些特殊场合,特别是它对在寒冷地区工作的变压器中冬季暂时停用期不出现浮冰更有实际意义。在寒冷气候条件下,变压器油中的游离水分会凝结成冰,若油的密度大于冰的密度,则在变压器油面上出现浮动的冰,冰本身一般对变压器的绝缘没有什么影响。
The density effect of transformer oil thermal conductivity, and can also be used to determine whether the oil used in some special occasions, especially for its work in the cold area in winter period of transformer temporarily disabled does not appear ice is more practical. In cold climates, free moisture in transformer oil will condense into ice, if the oil density is greater than the density of ice, is floating ice in transformer oil on the surface of the ice itself, generally do not have what effect on the transformer insulation.
但当油温上升时,冰溶化成水进入油中电场强度高的区域会引起绝缘强度明显降低,进而导致绝缘的击穿。因此,要选用油的密度不大于冰的密度,以避免这种危险状态的出现。0℃时的冰,其密度可在相当大的范围内变化(0.880-0.920x10³kg/m³)。
山东变压器油
However, when the oil temperature rises, the ice melts into water and enters the oil field. The region with high electric field intensity will cause the insulation strength to decrease obviously, and then lead to the breakdown of the insulation. Therefore, the density of the oil should not be greater than the density of the ice to avoid the emergence of such a dangerous state. 0 degrees of ice, the density can be varied over a considerable range (0.880-0.920x10 kg/m fand fand).
在变压器油的检测标准中规定:变压器油在20℃的密度不大于0.895x10³kg/m³。这基本满足在寒冷条件下变压器运行的要求。对于变压器油来说,只有不影响油的其他性质(如闪点),密度低一些为好。
The provisions in the detection standard of transformer oil in transformer oil density at 20 C not more than 0.895x10 kg/m fand fand. This basically meets the requirement of transformer operation in cold condition. For transformer oil, only the other properties of the oil (such as flash point) are not affected, and the lower density is better.
油品的密度与其化学组成以及水的含量有关,不同产地和厂家的油,密度有明显的差别。在生产实践中可从油的密度大致估计油的性质,含烷烃多的油比含环烷烃及芳香烃多的油密度小,而含硫、氧、氮等的化合物以及含油焦质多的油密度就大。
The density of oil is related to the chemical composition and the content of water, and the oil density of different producing areas and manufacturers is obviously different. In the production practice from the oil density estimated oil properties, containing much oil than alkanes containing naphthenic hydrocarbons and aromatic hydrocarbons of oil density, and sulfur, oxygen and nitrogen compounds and petroleum coke much oil density is big.
同时,对于变压器油来说,控制其密度在某种意义上也就控制了油品中水的含量。油的密度还与温度有关,油温高体积膨胀,密度就小,反之则密度就大。我国规定油品在20℃时的密度为标准密度,以ρ20表示,相对应的检测仪器为上海羽通仪器仪表厂生产的YT-1884石油产品密度测定仪。当测定的密度不在20℃条件下测得的密度时,可以通过石油密度换算表查得.
At the same time, for transformer oil, to control its density, in a sense, it also controls the content of water in the oil. Oil density is also related to temperature, high oil temperature, volume expansion, density is small, otherwise, the density is large. The provisions of China oil density at 20 C for the standard density to 20 P said detection equipment corresponding to the Shanghai plume YT-1884 petroleum products density instrument factory production apparatus. When the density of the determination is not 20 degrees, the density can be checked by the petroleum density conversion table
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This article by Shandong transformer oil for you, our website is: http://www.jnwdsh.com, we will wholeheartedly enthusiasm for you to provide better service, you are welcome to visit!
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