A three-dimensional wound core resin insulated dry-type transformer

Abstract

The invention provides a resin insulation dry type transformer with a three-dimensional reel iron core. The dry type transformer comprises a transformer body, the transformer body comprises a three-dimensional reel iron core, the three-dimensional reel iron core comprises single frames of a rounded rectangle structure, the three single frames are arrayed and spliced into a three-dimensional equilateral triangle body, the splicing portion of every two adjacent single frames is wound and connected through a coil to form three windings, and each winding is cured and formed by integrally pouring a curing agent; the upper end and the lower end of the three-dimensional reel iron core are clamped by an upper clamping part and a lower clamping part respectively, the three-dimensional reel iron core is fixed to a transformer base, an upper blowing cooling fan is arranged in the lower clamping part, the upper surface of the lower clamping part is hollow, and an air port of the upper blowing cooling fan faces upward and blows air in the axis direction of the windings. According to the resin insulation dry type transformer with the three-dimensional reel iron core, the upper blowing fan is located below the windings and blows air from the underneath of the windings in the axis direction of the windings to cool the windings in a forced mode, so that heat dissipation of the transformer is uniform, the phenomenon of nest wind is prevented, and the service life of the transformer is prolonged.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a resin-insulated dry-type transformer with three-dimensional wound iron core that improves the heat dissipation function and simultaneously improves the mechanical strength and short-circuit resistance capability of the transformer. Background technique [0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. Transformer is an important equipment in power generation, power supply and power consumption enterprises. It is also in a very critical position in the power grid. It is an important device to ensure the safe and reliable operation of the power grid and the electrodes used by people in production and life. [0003] The three-dimensional wound core transformer room is an energy-saving power trans...

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