Indoor high-safety oil-immersed transformer

Abstract

The invention discloses an indoor high-safety oil-immersed transformer, belongs to the field of oil-immersed transformers, and aims to solve the problems that in the working process of the transformer, the temperature of transformer oil is increased, so that the oil pressure is increased, a transformer main body is threatened, and in the oil pressure increasing process, the transformer main body is threatened. Before a transformer main body is damaged, the pressure detection cover with low structural strength is firstly broken along the direction of the prefabricated groove, the peeled high-strength cover residual part can damage a three-dimensional space structure formed by the elastic fibers under the impact of inrush transformer oil and move to the lower half part of an acrylic bottle, the residual part of the elastic fiber high-strength cover forms isolation, and the elastic fiber high-strength cover is prevented from being damaged. The oil-immersed transformer has the advantages that the oil-immersed transformer is not easy to return into the transformer main body, the structure in the transformer main body is not easy to damage, the safety of the oil-immersed transformer can be greatly improved, and the accident of explosion of the transformer is not easy to occur in the indoor use process.

Description

technical field [0001] The invention relates to the field of oil-immersed transformers, in particular to an indoor high-safety oil-immersed transformer. Background technique [0002] Oil-immersed transformer refers to a transformer that uses petroleum liquid as a cooling substance. Compared with the traditional dry type, oil-immersed transformer oil has good insulation performance and good thermal conductivity. At the same time, transformer oil is cheap, which can solve the problem of large-capacity heat dissipation and High-voltage insulation problems, so it is widely used in industrial and civil building power supply and distribution systems. Except for small-capacity copper wires, the low-voltage windings of oil-immersed transformers generally adopt a cylindrical structure with copper foil around the shaft; The layer cylindrical structure makes the ampere-turn distribution of the winding balanced, the magnetic flux leakage is small, the mechanical strength is high, the sh...

AI Technical Summary

Problems solved by technology

[0003] For indoor transformers, for safety reasons, dry-type transformers are usually used. Since there is no transformer oil in dry-type transformers, there is no need to consider leakage and fire protection issues, and they can be directly installed in the power distribution room. However, compared with oil-immersed Type transformer, once the coil is broken, it will be scrapped directly, and it is difficult to repair, resulting in high cost of dry-type transformer, which has become one of the important obstacles to the use of dry-type transformer

[0004] However, once the oil-immersed transformer bursts due to overvoltage during use, it is very easy to cause the transformer oil to splash out, and the transformer oil is a flammable item. After the transformer oil is scattered and splashed, it is easy to be ignited once it encounters an open flame, causing Fire, especially in a relatively closed indoor environment, will spread rapidly, posing a serious threat to people's lives and property safety

Images