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Novel seamless coiled core transformer

A technology of wound iron core and transformer, applied in the field of transformers

Inactive Publication Date: 2012-08-01
黄上立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The purpose of this invention is to overcome the defects of seams in existing wound cores and the difficulty of being used in large transformers, and to realize a new type of three-phase and single-phase seamless wound core Transformer, create a new model of transformer structure, achieve energy saving, material saving and improve the overall performance of the transformer

Method used

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  • Novel seamless coiled core transformer
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1. Single-phase seamless wound core transformer

[0024] figure 1 Shown is a single-phase seamless wound core transformer, figure 1 .d is a rectangular coil (1) of a single-phase transformer, the four corners of the rectangular coil (1) are arc-shaped transitions, and all cross-sections of the coil (1) are circular, see figure 1 .b and figure 1 .c. figure 2 Shown is a circular insulating bottom cylinder (2), which is divided into two halves longitudinally and can be sleeved on the closed coil (1), (see figure 1 .b), a plurality of threaded holes (10) are left on the end surface of the bottom cylinder for fixing the bottom cylinder on the driving ring of the winding machine. (The driving ring is also divided into two halves, which can be put on the coil. After winding a winding core, remove the driving ring, and then fix the next bottom cylinder on the driving ring, and wind the next winding core...because the winding The winding mechanism does not ...

Embodiment 2

[0028] Embodiment 2. Single-phase seamless wound core transformer using variable cross-section coils

[0029] image 3 Shown is a single-phase seamless wound core transformer with variable cross-section coils. The cross section of the coil (11) changes: the part surrounded by the wound core is a circular cross section, and the coil exposed from the wound core is gradually expanded into a flat shape. The shortest path distribution, given by image 3 .c shows the flat section of the coil (11); by image 3 .b It can be seen that the coil (11) expands in the horizontal direction.

[0030] The coil with variable cross-section can shorten the total length of the coil by 5%-6%, saves copper wire, reduces copper resistance, reduces copper loss, and is more material-saving and energy-saving than conventional coils. And reduce the overall height of the transformer by 12%. Variable cross-section coils can be wound on special moulds.

Embodiment 3

[0031] Embodiment 3. Three-phase seamless wound core transformer

[0032] Figure 4 A three-phase seamless wound core transformer is shown: Figure 4 .a is the top view of the transformer. In the figure (12) is the A-phase coil, (13) is the B-phase coil, and (14) is the C-phase coil. , the copper wires are distributed according to the shortest path. Between the three-phase coils A and B, B and C, C and A, put them together two by two (the insulating plate is placed in the middle, and the part that is brought together is cylindrical), forming three cylinders, and wrapping the cylinders (coils) with insulating tape tight. Then put the insulating bottom cylinder (2) on the cylinder, wind the silicon steel strip on the bottom cylinder (2), and wind it into a plurality of seamless winding cores (3) in turn, and wrap all the three cylinders (coils) live to form a three-phase shell-type seamless wound core. Such as Figure 4As shown in .b: the three sets of coiled cores are sta...

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Abstract

The invention provides a seamless coiled core transformer, which is composed of a coil, a seamless coiled core, supports and a base, and is characterized in that the core of the transformer is formed by a plurality of seamless coiled cores; each seamless coiled core is prepared by coiling silicon strips with same width or amorphous alloy strips on an insulating bottom barrel which can be split and are sleeved on the prefabricated coil in advance; the coil and the coiled cores are fixed and arranged on the base by the supports; and the seamless coiled core transformer comprises a one-phase transformer and a three-phase power transformer.

Description

Technical field: [0001] The invention relates to transformers in the field of electric engineering and electric appliance technology, in particular to shell-type wound core transformers, including three-phase transformers and single-phase transformers. Background technique: [0002] At present, transformer cores are divided into two categories: laminated core and wound core. The wound core transformer has many advantages such as high core filling rate, small no-load current, energy saving and material saving. However, most wound cores need to be cut in half so that they can be placed on prefabricated coils. On the one hand, there is a seam in the magnetic circuit, which increases the reluctance and loss. On the other hand, large cores are difficult to cut and limit The application of wound cores in large transformers; although the annular core has no joints, it can only be used in single-phase transformers, and the coil winding process is complicated; R-shaped transformers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/26H01F27/25H01F27/28H01F27/30H01F27/08
Inventor 黄上立
Owner 黄上立