Preparation method of insulation conduction oil for transformer

Abstract

The invention discloses a preparation method of insulation conduction oil for a transformer. The insulation conduction oil contains the following components in parts by weight: 50-65 parts of mineralbase oil, 10-15 parts of castor oil, 5-10 parts of peanut oil, 0.5-3 parts of oil-soluble nano-titanium dioxide, 6-12 parts of glycerol triacetate, 0.1-0.2 part of a surfactant, 0.01-0.02 part of an antioxidant, 0.5-1.5 parts of an antistatic agent and 1-3 parts of modified nano-boron nitride particles, wherein the base oil is mineral oil with a kinematic viscosity of 20mm<2> / s-35mm<2> / s at 100 DEG C. The prepared insulation conduction oil is good in oil product quality, high in ignition point, good in insulating property and heat-conducting property and has moderate kinematic viscosity, highflash point, excellent anti-oxidation and anti-aging stabilities and good corrosion resistance, and the situation that the transformer is influenced by static electricity generated by the transformeroil can be prevented.

Description

technical field [0001] The invention relates to the field of manufacturing auxiliary materials for power transformers, in particular to a method for preparing transformer insulating and heat-conducting oil. Background technique [0002] Transformer is a kind of voltage transformation equipment used in power transmission system, which plays a very important role in power grid system. When the transformer is running, the internal coil will generate a lot of heat. If the heat generated by the coil cannot be dissipated in time, it will affect the normal use of the transformer, and even seriously affect the entire power transmission system; therefore, the current transformers are all There is an oil tank, and the transformer oil is stored in the oil tank. Through the circulation of the transformer oil in the transformer, the heat generated by the coil during the operation of the transformer is absorbed, and then the heat absorbed by the transformer oil is dissipated to the outsid...

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Problems solved by technology

[0004] In the prior art, a single mineral oil component is mostly used to produce electrical insulating oil. This single mineral oil has poor fluidity and is easy to precipitate hydrogen; while aromatic hydrocarbons are good in resisting hydrogen precipitation, but the insulating oil is preserved The time is short, and the anti-oxidation performance is poor. After a period of use, the insulating oil is prone to sludge, which greatly reduces the performance of the insulating oil.