Foldable three-dimensional double-opening iron core oil-immersed transformer

Abstract

The invention discloses a foldable three-dimensional double-opening iron core oil-immersed transformer. The foldable three-dimensional double-opening iron core oil-immersed transformer comprises a double-opening transformer iron core having an L-shaped interlock structure, wherein the iron core is formed by splicing three single-frame double-opening iron cores at an center angle of 120 degrees, and the cross section of the spliced iron core is in an inscribed polygonal shape of a circle, an circular shape (R type) and a regular hexagonal shape; the iron core is arranged in an oil tank, three side surfaces of the oil tank are each provided with a heat radiation device, and the outer side of a core column is sequentially sleeved by a low-voltage coil and a high-voltage coil from inside to outside. The iron core of the foldable three-dimensional double-opening iron core oil-immersed transformer adopts a ferrite yoke and core column interlock structure, so that the foldable three-dimensional double-opening iron core oil-immersed transformer has the characteristics of low loss, small noise, high sudden short circuit resistance, high iron core mechanical strength and high production efficiency.

Description

technical field [0001] The invention relates to the structural field of power transmission and transformation equipment, and in particular provides a folded three-dimensional double-opening iron core oil-immersed transformer. Background technique [0002] Transformers play a very important role in power transmission and transformation systems. In recent years, with the increasing investment in my country's distribution network construction, the country has carried out large-scale promotion of high-efficiency and energy-saving transformers. Good and widely used. However, due to the complex process of wrapping coils in the manufacturing process of the closed triangle iron core transformer, the production efficiency is low, and the product maintenance is difficult, etc., its development is hindered. At present, the advent of a detachable three-dimensional open triangular oil-immersed transformer has solved the above problems, but it is still subject to technical limitations to...

AI Technical Summary

Problems solved by technology

However, due to the complex process of wrapping coils in the manufacturing process of the closed triangle iron core transformer, the production efficiency is low, and the product maintenance is difficult, etc., its development is hindered

At present, the advent of a detachable three-dimensional open triangular oil-immersed transformer has solved the above problems, but it is still subject to technical limitations to a certain extent, such as: the position of the open joint can only be concentrated on the core column The upper end of the coil can easily cause loosening, shifting, and deformation. The seam buried in the coil end brings great inconvenience to the reinsertion of the iron core, which not only affects the performance of the iron core, but also reduces the quality of the transformer.

Images