Structure for fastening amorphous alloy transformer body and method for assembling transformer body

Abstract

The invention provides a structure for fastening an amorphous alloy transformer body. A low-voltage coil (1) and a high-voltage coil (2) in a phase winding of the transformer body are distributed in a staggered manner; a clamp plate (3) is arranged on the outer side of the end part of the phase winding of the transformer body; one or a plurality of phase windings are sleeved on a core limb (5); the phase windings are fastened by a binding tape (4); and the upper parts and the lower parts of the coils in the phase windings are embedded in the grooves of a lower fixture (6) and an upper fixture (7) respectively. The method for assembling the transformer body comprises the following steps: winding the low-voltage coil (1) and the high-voltage coil (2) respectively; assembling the coils into a single phase winding; tightly pressing the phase windings inwards by the clamp plate (3); binding up the phase windings and the clamp plate (3) by the binding tape (4); sleeving the bound phase windings on the core limb (5); mounting the phase windings together with the core limb (5) on the upper fixture (7) and the lower fixture (6); and plugging cushion blocks between the clamp plate (3) and the walls of the upper fixture (7) and the lower fixture (6).

Description

technical field [0001] The invention relates to a structure for fastening an amorphous alloy transformer body and an assembly method thereof. Background technique [0002] Amorphous alloy transformer is an excellent low-loss energy-saving transformer. It is characterized by the use of amorphous alloy materials instead of silicon steel sheets to make iron cores, which makes the transformer's no-load loss and no-load current small, so it has received more and more attention. attention. However, because amorphous alloy materials are very sensitive to mechanical stress, commonly known as metallic glass, both tensile stress and bending stress will affect their magnetic properties, so the short-circuit resistance of amorphous alloy transformers is poor, and the iron core cannot withstand mechanical forces. [0003] The current amorphous alloy transformer generally adopts a core structure. The high and low voltage coils are concentrically sleeved on the core column, the coil surro...

AI Technical Summary

Problems solved by technology

However, due to the mechanical characteristics of the amorphous alloy material, it is not suitable for the assembly method of this insert. At the same time, the iron core of the traditional shell-type transformer is compressed by the middle fuel tank and the lower fuel tank, so as to achieve the purpose of fastening the body. And when a short circuit occurs, the core needs to bear part of the electromotive force of the coil, which is also impossible for the amorphous alloy core that cannot withstand mechanical stress

Images