Mining flameproof transformer and mobile substation provided with same

Abstract

A mining flameproof transformer and a mobile substation provided with same relate to transformers and solve the problems that the upper part and the lower part of a transformer shell have large temperature difference, so the cooling function of the shell cannot be given a full play; the lower part of the shell easily generates a condensation phenomenon which can cause corrosion to the lower part of the shell and further shortens the service life of the transformer; and the design of the transformer is difficultly optimized due to limit of underground haulage roadways. A three-phase wound iron core is of a three-dimensional triangular wound iron core shape and is horizontally arranged in a flameproof shell, a low-tension coil is wound on a three-phase wound iron core column, and a high-tension coil is wound on the low-tension coil. The mining flameproof transformer and the mobile substation provided with the mining flameproof transformer have the advantages of reasonable structure, more excellent property and remarkable energy-saving effect; due to adoption of the horizontal structure, temperature difference between the upper part and the lower part of the flameproof shell is reduced, the effective cooling area of the flameproof shell is greatly increased, so that the temperature of the lower part of the flameproof shell is increased and the condensation phenomenon is avoided; and the design of the transformer can be optimized as required.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a mine flameproof transformer and a mobile substation with the transformer. Background technique [0002] At present, most of the production plants in our country adopt the traditional planar structure stacked iron core process to manufacture mining flameproof transformers and mobile substations. Due to the inconsistency between the local magnetic flux direction and the magnetic conduction direction of silicon steel sheets and the air joints in many places in the iron core However, there is a high energy consumption area, which greatly increases the reluctance of the core, resulting in high no-load current and no-load loss and high operating noise, making it difficult for this type of transformer to make breakthroughs in energy-saving technology improvements. Patent No. 01274757.2 "Mine Flameproof Winding Core Mobile Substation" and Patent No. ZL200620148455.9 "Mining Three-phase Wind...

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the following problems existing in the existing mining explosion-proof transformers and mobile substations: the unbalanced three-phase magnetic circuit; Condensation is easy to occur when the shell explodes, which corrodes the lower part of the shell and shortens the service life; limited by the underground transportation roadway, it is difficult to optimize the design of the transformer

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