Transformer capable of controlling magnetic flux leakage

A transformer and flux leakage technology, applied in the field of transformer manufacturing, can solve problems such as overheating of metal structural parts, overheating of transformer oil tank connecting bolts, etc., and achieve the effect of solving local overheating

Active Publication Date: 2017-02-01
山东输变电设备有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Lobe-type magnetic shielding can solve the local overheating problem of metal structural parts inside the transformer, copper shielding, strip magnetic shielding and L-shaped copper plate can solve the local overheating problem of the transformer oil tank and the connecting bolts of the upper and lower sections

Method used

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  • Transformer capable of controlling magnetic flux leakage
  • Transformer capable of controlling magnetic flux leakage
  • Transformer capable of controlling magnetic flux leakage

Examples

Experimental program
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Embodiment Construction

[0022] Such as figure 1 As mentioned above, the lobe-shaped magnetic shield 1 is arranged on the body of the transformer and in the iron yoke pad at the lower end. The lobe-shaped magnetic shield 1 is divided into three thicknesses of 50mm, 65mm and 80mm according to the capacity of the transformer.

[0023] Such as figure 2 — Figure 4 As mentioned above, the 6mm copper shielding 4 arranged on the inner wall of the transformer oil tank 2 and the strip-shaped magnetic shielding composed of at least one magnetic shielding strip 3 laid on the upper and lower ends of the copper shielding 4 respectively, the magnetic shielding strip 3 passes through the curved plates 5 around it Lay on the surface of the copper shielding 4, the copper shielding 4 is provided with an opening, the bent plate 5 passes through the opening and is welded on the inner wall of the fuel tank, the magnetic shielding strip 3 is wrapped from the inside to the outside through the 0.5mm paper slot 9 and the 1...

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PUM

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Abstract

The invention discloses a transformer capable of controlling magnetic flux leakage. The transformer comprises lung lobe type shields which are arranged in yoke cushion blocks at the upper end and the lower end of a transformer body, a copper shield which is arranged on the inner wall of a transformer oil tank, bar-type magnetic shields which are paved at the upper end and the lower end of the copper shield and are composed of at least one magnetic shielding bar respectively, and L-shaped copper plates which are arranged at the positions of tank edges of an upper joint and a lower joint to be connected with the copper shield. According to the transformer, the problems such as local overheating of metal structural members inside the transformer and local overheating of the transformer oil tank and connecting bolts of the upper joint and the lower joint can be solved effectively.

Description

technical field [0001] The invention relates to the field of transformer manufacturing, in particular to a transformer for controlling magnetic flux leakage. Background technique [0002] With the development of the power system in the direction of ultra-high voltage, large capacity, and long distance, large-capacity AC transformers and DC transformers will be widely used. Large-capacity transformers usually have a large leakage flux. The leakage flux enters the metal structural parts, causing additional loss and causing local heating of the metal structural parts inside the transformer. If the temperature is too high, it will accelerate the aging of the oil in contact with it. Transformer oil begins to decompose when it exceeds 140 ° C ~ 150 ° C, forming alkanes, alkenes and hydrogen, which are reflected in the gas chromatography analysis of the oil, affecting the normal operation of the transformer. In addition, a large part of the leakage flux of the large-capacity trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/36
CPCH01F27/36
Inventor 杨同勋杨鑫泰李昌蕾杜迪
Owner 山东输变电设备有限公司
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