Iron core structure of reel iron core transformer

A technology of iron core structure and wound iron core, applied in the direction of transformer/inductor magnetic core, transformer/inductor components, transformer/inductor cooling, etc., can solve problems such as unsatisfactory heat dissipation and complex structure, and reduce manufacturing Difficulty and manufacturing cost, effect of reducing temperature rise

Inactive Publication Date: 2017-02-22
WOLONG ELECTRIC YINCHUAN TRANSFORMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Complex structure and poor heat dissipation

Method used

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  • Iron core structure of reel iron core transformer
  • Iron core structure of reel iron core transformer
  • Iron core structure of reel iron core transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as Figure 1-3 As shown, an iron core structure of a wound core transformer includes an iron core body formed by stacking multi-layer closed wound iron core laminations 1, and an iron core oil channel 203 arranged in the iron core body. In the stacking direction, the iron core body is divided into core splits that do not touch each other through several iron core oil passage layers 2 to replace the closed-rolled iron core laminations 1 of the layer, and each iron core split is It consists of several stacked closed-roll iron core laminations 1, and each core oil passage layer 2 is composed of several adjacent iron core oil passages 203 on the same level.

Embodiment 2

[0027] In order to realize the arrangement of an odd number of iron core oil passage layers 2 on the rolled iron core to achieve a more optimized heat dissipation effect, the following is an example where three iron core oil passage layers 2 replace the closed wound iron core lamination 1 of the layer:

[0028] Such as figure 1 , 2 , 4, and 5, the iron core body is divided into four non-contacting core bodies by replacing the closed-rolled iron core laminations 1 of the layer with three iron core oil channel layers 2 in the stacking direction. The iron core is separated, and one of the iron core oil passage layers 2 replaces the closed-rolled iron core lamination 1 located in the center layer of the iron core. The four iron core splits and the remaining two iron core oil passage layers 2 are symmetrical Distributed on both sides of the central iron core oil channel layer 2, the two outer iron core splits are formed by stacking five closed coil iron core laminations 1, because...

Embodiment 3

[0042] In order to achieve an even number of iron core oil passage layers 2 arranged on the wound iron core to achieve a more optimized heat dissipation effect, the following is an example where two iron core oil passage layers 2 replace the closed wound iron core lamination 1 of the layer, and The difference between the two examples above is:

[0043] Such as figure 1 , 2 As shown, the iron core is divided into three separate iron cores that do not touch each other through two iron core oil passage layers 2 in the stacking direction instead of the closed coiled iron core laminations 1 of the layer. , the three iron core splits and two iron core oil passage layers 2 are symmetrically distributed on both sides of the center plane of the iron core body. Since the heat in the middle part of the iron core is higher, better heat dissipation is required. The two iron cores The thickness of the split body of the iron core between the core oil passage layers 2 is smaller than the th...

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Abstract

The invention relates to an iron core structure of a reel iron core transformer. At present, when the diameter of an iron core is greater than 640mm, more oil channels need to be placed, and vertical oil channels are required in necessary, so that a complex structure and non-ideal heat dissipation are caused. The iron core structure provided by the invention comprises an iron core body which is formed by multiple layers of closed reel iron core laminated sheets in a laminated manner, and iron core oil channels formed in the iron core body; the iron core structure is characterized in that multiple iron core oil channel layers are arranged on the iron core body in the laminating direction; the iron core body is divided by the iron core oil channel layers into iron core sub bodies which are not in contact mutually; each iron core sub body is formed by multiple closed reel iron core laminated sheets in a laminated manner; and each iron core oil channel layer consists of multiple iron core coil channels in the same layer. According to the technical scheme, the multiple iron core coil channel layers are adopted to replace the closed reel iron core laminating sheets in the located layer, and the reel iron core is divided into multiple iron core sub bodies in the laminating direction, so that it is ensured that enough heat dissipation medium can enter the interior of the iron core, and a cooling effect can be played quickly and efficiently.

Description

technical field [0001] The invention relates to an iron core structure of a wound iron core transformer. Background technique [0002] With the continuous advancement of technology and the improvement of technological level, the production process of coiled iron core has been greatly improved, and the capacity has gradually increased from the original small capacity to large and medium-sized capacity. Compared with the traditional laminated core, the wound core has the characteristics of less material, light weight, no-load loss and lower noise. Although the structure of the wound core and the laminated core is very different, the functions of the two are the same, and both of them will inevitably generate heat during operation. The no-load loss of the transformer causes the iron core body to heat up. In order to prevent local overheating of the iron core, an oil passage for cooling is usually installed inside the iron core to improve the heat dissipation performance of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/26H01F27/245H01F27/12
CPCH01F27/12H01F27/245H01F27/266
Inventor 胡宝国张健鲁玮马金山王娥
Owner WOLONG ELECTRIC YINCHUAN TRANSFORMER
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