Amorphous alloy oil immersion type distribution transformer body structure and manufacturing method thereof

Technical Field

The invention relates to a body structure of the transformer, in particular to a kind of amorphous alloy dry distribution transformer body structure and manufacturing method thereof.

Background Art

Transformer body is composed of a coil and an iron core two major components, and the copper is the main material of the transformer coil. My copper resource shortage, long-term dependent on imported, in order to meet the demand. In recent years, the rapid International copper, the material cost of the transformer is increased by a large margin.

Amorphous alloy dry-type distribution transformer (hereinafter referred to as changes dry crystalless) is a widely-used very low no-load loss of the high-efficient energy-saving product. The copper does crystalless rising variable cost performance, also, to a certain extent the popularization and application of the variable does crystalless.

Existing home-made non- the crystal does variable high, almost all of the low tension coil with copper wire, made of copper foil. If aluminum foil instead of copper foil, the aluminum conductor to replace copper wire preparation coil, the premise of the same product performance material cost can be reduced under the 20% the left and right. In this way, not only the cost performance of the variable does crystalless can be optimized, to the copper price and can reduce the influence on the cost of variable does crystalless , reduce the National consumption of insufficient copper resources.

Content of the invention

In order to overcome the deficiency of the prior art, the invention aims to provide a material cost can be reduced remarkably, and has good energy-saving effect of the amorphous alloy dry-type distribution transformer body structure and method of manufacturing the same.

Realize the above-mentioned purpose the technical scheme is:

One of the present invention, a kind of amorphous alloy dry distribution transformer manufacturing method, comprising the following steps:

1st step, in manufacturing a three-phase core mode;

2nd step, by mechanical processing of the method for manufacturing a high-voltage coil is left, the right end of the upper and lower clamping parts at the left and the two ends of the outer end of the coil on the low-pressure column, the lower clamping part the combination of a clamping piece, the transition joint and aerobronze insulated framework;

3rd step, the insulating frame external aluminum foil winding low voltage coil;

4th step, independently wound aluminum conductor for high-voltage coil;

5th step, in order to with a low-voltage coil insulating frame in three-phase core is, in the low-voltage coil is a high-voltage coil to outside of the body assembly;

6th step, the coil is connected.

The invention II, the amorphous alloy dry-type distribution transformer body structure, comprising a three-phase core, is sleeved on the three-phase core around the respectively independent of the high and low voltage coil is made integral, in the low-voltage coil is provided in the insulating frame, is set at the high and low voltage coil, the two ends of the upper and lower clamps under, a number of through insulated conducting wire clamps or insulators on fixed on the upper clamping pieces of aluminum-copper transition joint, characterized in that the high and low voltage coil of conductive material are made of metal of aluminum, and the high-voltage coil is an aluminum wire winding and is encapsulated with the epoxy resin after the outer in the low tension coil.

In the above-mentioned amorphous alloy dry distribution transformer body in the structure, the insulating frame is with the three-phase core cross-section matching the rectangular barrel.

In the above-mentioned amorphous alloy dry-type distribution transformer body structure, said aluminum-copper transition joint for each phase two a total of six members and with said high and low voltage coil arranged in the form of coaxial, and the each piece of aluminum-copper transition joint by welding into a whole is formed of copper and aluminum wire; the first of the low-voltage coil, with the tail ends of the transition joint with al-Cu alloy is aluminum.

In the above-mentioned amorphous alloy dry-type distribution transformer in the body structure, wherein the insulated conducting wire clamps are positioned in the aluminum-copper transition joint the upper copper bar and between the upper clamping piece.

Due to the adoption of the technical solutions, the invention copper is replaced by aluminum, aluminum is electrically conductive after the copper fine conductor performance, small mass and density of the aluminum, and one third of the copper not, and a rich solvent of resources in China, is not to be imported, therefore, the utility model has the advantages of low material cost, light weight, the copper price does crystalless reduce the impact of the the advantages of variable cost, in addition, the utility model no-load loss is low, the no-load current is small, has a good energy-saving effect; a solid body structure of a compact and reasonable, high mechanical strength of the winding, the short-circuit current can be subjected to impact, at the same time, because the protection function of the insulated framework, can eliminate the short-circuit current generated by the electromotive force of the extrusion of the coil the impact of the amorphous alloy core, in order to guarantee the core has a constant good magnetic performance.