Transformer

A technology of transformers and shielding parts, which is applied in the field of transformers and can solve problems such as reducing stray losses
CN109524221AInactive Publication Date: 2019-03-26济南西门子变压器有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
济南西门子变压器有限公司
Publication Date
2019-03-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

A transformer includes an oil tank (10), an iron core (40), a set of windings (20), an upper shield (32), a lower shield (34) and a side shield (36). The iron core includes a main core column (42) andtwo side columns (44) along the length direction (L). The windings sleeve the main core column. The upper shield is arranged in the oil tank and on one axial side of the windings, and the length of the upper shield along the length direction covers the iron core. The lower shield is arranged in the oil tank and on the other axial side of the windings, and the length of the lower shield along thelength direction covers the iron core. The side shield is arranged in the oil tank and on one side of the winding along the length direction, and the length of the side shield in a direction parallelto the axial direction of the windings covers the windings, the upper shield and the lower shield. A leakage flux path is formed in the length direction of the transformer provided by the invention toguide leakage flux, so that stray loss caused by leakage flux is reduced.
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Description

technical field

[0001] The invention relates to a transformer, especially a transformer with a magnetic shielding device. Background technique

[0002] During the operation of the transformer, leakage flux will be generated around the winding, and stray loss will be generated when the leakage flux passes through the tank wall. In order to solve this problem, a magnetic shielding device is usually designed in the power transformer to allow the leakage flux to preferentially pass through the magnetic shielding device with better magnetic permeability, thereby reducing the stray loss caused by the leakage flux on the tank wall. The existing magnetic shielding device has little influence on the leakage flux when the size of the transformer is small, and cannot reduce the stray loss well. Contents of the invention

[0003] The purpose of the present invention is to provide a transformer that can effectively guide leakage flux and reduce stray loss when the size of the transfor...

Claims

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