Folding type three-dimensional triangular transformer open reel iron core having hexagonal cross section

Abstract

The invention discloses a folding type three-dimensional triangular transformer open reel iron core having a hexagonal cross section. The folding type three-dimensional triangular transformer open reel iron core comprises an iron core group; the iron core group is of a three-dimensional triangular structure seamlessly spliced by three single-phase open reel iron cores, which are independent and are the same both in a size and a structure, at central angles of 120 DEG; a middle hollow place of the single-phase open reel iron cores is a window; an upper end of the window is provided with an upper yoke, and a lower end of the window is provided with a lower yoke; core columns are arranged between the upper yoke and the lower yoke; each group of silicon steel sheet material straps laminated into the single-phase open reel iron cores is composed of two parts, namely a first rectangular material strap and a second right-angled triangular material strap; widths of the second material straps are gradually reduced along extension directions of the first material straps; the cross sections of the core columns of the single-phase open reel iron cores laminated by each group of the silicon steel sheet material straps after being folded and sheared are of an isosceles trapezoid; and the cross sections of three columns of the spliced iron core group are of a regular hexagon. According to the folding type three-dimensional triangular transformer open reel iron core having the hexagonal cross section, the material utilization rate is high, the production cost is low, the production efficiency is high and the manufacturing process is simple.

Description

technical field [0001] The invention relates to the field of transformer iron cores, and in particular provides a folded three-dimensional triangular transformer open wound iron core with a hexagonal cross-section. Background technique [0002] At present, the existing three-dimensional triangular transformer open coil cores in China mainly include the following two core structures: 1. Three sets of independent curved silicon steel sheet strips are stacked into three open coil iron after bending and shearing. core, and assemble three closed coiled iron cores with a 120° slope to form an R-shaped three-dimensional triangular iron core structure with a cross-sectional area. , Three groups of independent multi-segment folded silicon steel sheet strips are bent and sheared to form three open coiled cores, and the three open coiled cores are assembled at 120° to form a quasi-circular three-dimensional Triangular core structure, commonly known as polygonal or folded line core. T...

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a folded three-dimensional triangular transformer open wound iron core with a hexagonal cross-section, to at least solve the problem of low utilization rate of silicon steel sheet strips and high production costs when manufacturing transformer open wound iron cores. question

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