Vegetable insulating oil based on shinyleaf yellowhorn oil and application of vegetable insulating oil

Abstract

Vegetable insulating oil based on shinyleaf yellowhorn oil comprises the following components in parts by weight: 19-98 parts of the shinyleaf yellowhorn oil and / or modified oil of the shinyleaf yellowhorn oil, and 0-10 parts of an additive. The modified oil of the shinyleaf yellowhorn oil is selected from one or two mixtures in hydrogenated modified oil and ester exchanged modified oil of the shinyleaf yellowhorn oil; the additive comprises a metal passivator and an antioxidant; and moreover, the mixture further contains one or more of other vegetable oil and mineral oil. The vegetable insulating oil and a composition thereof have good oxidation stability, low viscosity and excellent electrical property, and can guarantee stable running of a transformer. In addition, the shinyleaf yellowhorn oil is not edible oil, and therefore, the drawback of 'food fight' with human bodies in other kinds of vegetable oil can also be overcome.

Description

technical field [0001] The invention belongs to the technical field of vegetable insulating oil, and in particular relates to a vegetable insulating oil based on sorbifolia oil and its application. Background technique [0002] At present, most of the transformers in the power system are oil-immersed transformers, and the selection of insulating liquid in the transformer is particularly important. Insulating oil has two important functions in transformers. One is to play an insulating role together with solid insulating materials (such as insulating paper); the other is to absorb the heat generated by transformer windings for cooling and to ensure safe and stable operation of transformers. [0003] Transformers generate a lot of heat during operation, especially the internal coil windings. When the insulating oil passes through the coil winding, it absorbs the heat generated by the coil winding, so that the temperature rises. After the temperature rises, the insulating oi...

AI Technical Summary

Problems solved by technology

Chinese patent CN101538505A discloses a plant-based insulating oil. The insulating oil is mainly composed of fatty acid triglycerides and antioxidants. It has a high flash point and strong oxidation resistance, but its kinematic viscosity is relatively high. It is used in transformers. Although it can be flame retardant and stable, the heat transfer coefficient is small, which cannot guarantee the safe and stable operation of the transformer.

According to reports, the annual output of edible oil in my country is 9.5-9.8 million tons, which is far from meeting the annual consumption of 21-22 million tons.

Therefore, more than 60% of my country's vegetable oil relies on imported raw materials or directly imported edible oil, which makes it difficult to vigorously promote vegetable oil as plant insulating oil in my country

[0009] In addition, rapeseed oil and soybean oil are often used as raw materials for vegetable insulating oil in transformers. Rapeseed oil has better oxidation resistance, but its kinematic viscosity is slightly higher, and the heat transfer effect is slightly worse, which cannot guarantee the safe and stable operation of the transformer; soybean oil Although the kinematic viscosity is small, the heat transfer effect is good, but the oxidation resistance is weak

Images