High-capacity transformer magnetic shielding device

A magnetic shielding and transformer technology, applied to transformer/inductance parts, preventing/reducing unnecessary electric/magnetic influence, circuits, etc., can solve the problem of transformer efficiency reduction, structural overheating, stray loss increase, etc. problem, to achieve the effect of simple structure

Pending Publication Date: 2020-04-17
SHANDONG TAIKAI TRANSFORMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, due to the increase of the leakage flux, the stray loss caused by the leakage field in the structural parts increases significantly, and the eddy current loss of the winding also increases, resulting in a decrease in the efficiency of the transformer; on the other hand, due to the concentration of the leakage flux, it is also possible Cause local overheating of structural parts, affecting the reliable operation of the transformer

Method used

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  • High-capacity transformer magnetic shielding device
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  • High-capacity transformer magnetic shielding device

Examples

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Embodiment Construction

[0021] Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment includes an iron yoke 1 and a clip 2 installed on the transformer. A magnetic shielding block 3 used in conjunction with the iron yoke 1 is installed on the clip 2. The magnetic shielding block 3 is composed of several layers of silicon steel sheets 4 superimposed. 4 outside is fixed with frame 5. The frame 5 has a semicircular section. A fixing plate 6 is installed on the frame 5 , and the fixing plate 6 is installed on a connecting plate 8 through bolts 7 , and the connecting plate 8 is fixed on the clip 2 .

[0022] Adopting the large-capacity transformer magnetic shielding device of the present invention, the magnetic shielding block 3 of the clip 2 is installed on the clip 2, which can well cover the magnetic flux leakage area of ​​the main channel, and guide the magnetic flux leakage into the iron core of the transformer. The magnetic shielding block 3 of the clip 2 p...

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PUM

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Abstract

The invention relates to a local component of a transformer, in particular to a high-capacity transformer magnetic shielding device. The high-capacity transformer magnetic shielding device comprises an iron yoke and a clamping piece which are arranged on the transformer, and is characterized in that a magnetic shielding block matched with the iron yoke is arranged on the clamping piece, the magnetic shielding block is formed by superposing a plurality of layers of silicon steel sheets, and a frame is fixed on the outer sides of the silicon steel sheets. The high-capacity transformer magnetic shielding device has the advantages that leakage flux is prevented from passing through the structural part to be closed, the purposes of reducing stray loss and solving the problem of local overheating of the structural part are achieved, the structure is simple, the shielding effect is good, and the manufacturing and using cost of the transformer is greatly reduced.

Description

[0001] (1) Technical field [0002] The invention relates to a partial component of a transformer, in particular to a magnetic shielding device for a large-capacity transformer. [0003] (2) Background technology [0004] As the capacity of the power grid continues to increase, power transformers are also developing in the direction of large capacity, ultra-high voltage, and environmental protection. The larger the capacity of the transformer, the more prominent the problem of magnetic flux leakage. On the one hand, due to the increase of the leakage flux, the stray loss caused by the leakage field in the structural parts increases significantly, and the eddy current loss of the winding also increases, resulting in a decrease in the efficiency of the transformer; on the other hand, due to the concentration of the leakage flux, it is also possible Cause local overheating of structural parts, affecting the reliable operation of the transformer. [0005] (3) Contents of the inven...

Claims

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Application Information

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IPC IPC(8): H01F27/36H01F27/34
CPCH01F27/34H01F27/346H01F2027/348H01F27/36
Inventor 孙秋霞王伟殷召扬尹明祚
Owner SHANDONG TAIKAI TRANSFORMER CO LTD
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