CN2530331Y

CN2530331Y - Many-sided curved composite section triangle iron core

Info

Publication number: CN2530331Y
Application number: CN 01266622
Authority: CN
Inventors: 吴茂安
Original assignee: 吴茂安
Current assignee: Zhejiang Golden Triangle Transformer Co., Ltd.
Priority date: 2001-11-16
Filing date: 2001-11-16
Publication date: 2003-01-08
Anticipated expiration: 2011-11-16

Abstract

The utility model relates to a three-phase transformer iron core, in particular to a multi-sided curved composite section triangle iron core formed by the coiling of continuous silicon strip. The triangle iron core is formed by the combination of three same single iron cores, and moreover the three iron core poles are arranged in an equilateral triangle manner. The iron core has the advantages that: the utility model is of a small volume and light weight, and the material use rate reaches 100 percent, and the production cost for the transformer is reduced.

Description

Polygon arc compound cross-section triangle iron core

The utility model relates to the three-phase transformer iron core, and specifically a kind of the coiling by continuous silicon strip forms, and is bolted together by three identical single-phase iron cores and forms the triangle iron core that a kind of iron core column cross section is polygon arc compound cross-section.

Patent of invention---the cubic three phase transformer iron core with round section (application number: 99114376.0) of my application, its iron core column by the continuous silicone steel coil strip around forming, and cross section is circular, the three-phase magnetic loop is symmetry equivalent, and it is the shortest, this is a kind of core structure form of ideal transformer, but this iron core in process of production, and stock utilization is the highest can only to be reached about 95%.

The purpose of this utility model is the triangle iron core of a kind of polygon arc compound cross-section of design, the cross section of three iron core column of this iron core is polygon arc, and each summit of polygon arc is all on same circumscribed circle, wherein two of polygon arc limits are straight flange, and have a subtended angle be 120 the degree breach.The stock utilization of the iron core of this structure reaches 100%.Therefore save raw material, further reduced production cost.

Its main technical schemes:

Use the curve cutting machine, by specific Mathematical Modeling continuous silicon strip is carried out curve and open material, then each section core band is docked with argon arc welding, use up-coiler again the single-phase iron core of core roll coil of strip coiled.The cross section of the iron core column of this single-phase iron core and iron yoke, Yi Bian be straight line, the surface of this straight line and coiling core band constitutes 60 ° of angles; Another side is half polygon arc.Three single-phase iron cores are assembled into a triangle iron core.

The utility model has the advantages that: the stock utilization of coiling steel band reaches 100%, without any waste material, has saved cost.Can make oil immersed power transformer with the utility model, dry-type power transformer and various electronic transformer, they all have the outstanding advantage that volume is little, in light weight, cost is low, loss is little, are the ideal products that power industry and electron trade update.

Fig. 1 is a structure chart of the present utility model

Fig. 2 is for clipping the state diagram behind part iron core column and the iron yoke among Fig. 1

Fig. 3 is the sectional drawing of 3 iron core column of the present utility model

As shown in the figure: polygon arc compound cross-section triangle iron core is made of 3 single-phase iron cores, each single-phase iron core constitutes a rectangle by upper and

lower iron yoke

2,3 and left and right sides iron core column, 3 iron core column 1 of polygon arc compound cross-section triangle iron core are put together by the iron core column of two single-phase iron cores respectively, its iron core column cross section is polygon arc compound cross-section, each summit that is polygon arc is all on same circumscribed circle, and wherein AB and two limits of CD are straight flange; It is 120 ° breach that polygon arc compound cross-section has a subtended angle.3 iron core column 1 of polygon arc compound cross-section triangle iron core are equilateral triangle arranges, on one side the cross section of each single-phase iron core is a straight line, this straight line and coiling steel band plane are 60 degree angles, and another side is half polygon arc.

Claims

1, polygon arc compound cross-section triangle iron core, constitute by three single-phase iron cores, each single-phase iron core is by last lower yoke (2,3) constitute a rectangle with left and right sides iron core column, three iron core column (1) that it is characterized in that polygon arc compound cross-section triangle iron core are put together by two single-phase iron core column respectively, the cross-sectional area of iron core column is polygon arc compound cross-section, each summit that is polygon arc is all on same circumscribed circle, on this polygon arc compound cross-section two limits being arranged is straight flange, and constitutes 120 ° breach.

2, by the described polygon arc compound cross-section triangle iron core of claim 1, in each the single-phase iron core that it is characterized in that forming by the steel tape coiling, one side of the cross section of iron core is straight line, the plane of this straight line and coiling steel band constitutes 60 ° of angles, and the another side of the cross section of iron core is half of above-mentioned polygon arc.