Self-snorkeling soaking type oil immersed transformer for transformer substation

Abstract

The invention discloses a self-snorkeling soaking type oil-immersed transformer for a transformer substation, and belongs to the technical field of transformers. A plurality of self-snorkeling balls and a counterweight capsule are introduced into insulating oil, and the temperature distribution characteristic of the insulating oil is utilized, so that the self-snorkeling balls in a normal state can suspend on the upper part of the insulating oil; heat generated in the working process of the transformer is absorbed by the insulating oil, then the self-snorkeling balls secondarily absorb the heat to trigger a magnetic field to release, the self-snorkeling balls adsorb and gain weight through the magnetic attraction effect on the balance weight capsule, the self-snorkeling balls begin to dive when the weight is increased to a certain degree and is larger than buoyancy, and the self-snorkeling balls dive to the lower portion of the insulating oil, due to temperature reduction, the self-snorkeling balls revoke the released magnetic field, then the counterweight capsule falls off to reduce weight, the self-snorkeling balls float upwards and reset again, the insulating oil is driven to interact in the height direction in the snorkeling process, the phenomenon that the temperature of the insulating oil is not uniform when the transformer works is greatly improved, and the heat dissipation effect and the service life of the insulating oil are effectively ensured.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a self-snorkeling homogenizing oil-immersed transformer used in substations. Background technique [0002] A transformer is a static electrical device used to convert AC voltage and current to transmit AC power. It is based on the principle of electromagnetic induction to achieve electrical energy transfer. Transformers can be divided into power transformers, test transformers, instrument transformers and special-purpose transformers in terms of their uses: power transformers are necessary equipment for power transmission and distribution, and power user distribution; test transformers can withstand voltage (boost) for electrical equipment Test equipment; instrument transformers are used for electrical measurement and relay protection of power distribution systems (PT, CT); special-purpose transformers include electric furnace transformers for smelting, welding transformers...

AI Technical Summary

Problems solved by technology

For small-capacity transformers, smooth oil tank surface is enough to cool the oil; for medium-capacity transformers, the surface of the oil tank should be wrinkled to increase the heat dissipation surface, or a fin or flat tube radiator should be installed to make the oil circulate in the radiator ;Large transformers need to install a radiation radiator on the outer surface of the oil tank, but the insulating oil in most transformer oil tanks has different heat dissipation effects due to different parts, resulting in uneven temperature distribution of the insulating oil, the most typical is the high temperature insulating oil density The insulating oil is small, so it is mostly located in the upper part, and the insulating oil with low temperature is dense, so it is mostly located in the lower part, which will cause local overheating inside the oil tank, and then cause the transformer oil to decompose and generate gas, which will affect the normal use of the transformer

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