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Body structure of single-phase traction transformer

A traction transformer, single-phase technology, applied in transformers, transformer/inductor magnetic cores, fixed transformers, etc., can solve the problems of insulation strength, overload and short-circuit resistance that are difficult to meet electrified railways, and improve short-circuit resistance. Uniform stress and good insulation performance

Active Publication Date: 2008-08-06
WOLONG ELECTRIC YINCHUAN TRANSFORMER
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a single-phase railway traction transformer for AT power supply mode came into being. However, due to structural design defects of the existing single-phase traction transformer body structure, its insulation strength, overload and short-circuit resistance are still difficult to meet the needs of electrification. railway requirements

Method used

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  • Body structure of single-phase traction transformer
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Embodiment Construction

[0015] The present invention mainly consists of core columns 15, high-voltage coils 1 and low-voltage coils 2 placed in series on two core columns 15, etc., and the low-voltage coils are radially split structures, consisting of two or four coils, two or There is a paper tube oil gap insulation structure 13 between the four coils; the head end 3 of the high-voltage coil is an entangled winding structure, and the other line segments are a continuous winding structure. There is an electrostatic ring 7 between them, and two corner rings 9 are arranged symmetrically between the layers of the high-voltage coil head 3 and the end 4 of the high-voltage coil and the iron yoke insulation 8; The pressing plate 12 is pressed and fixed; the four corners of the iron core post 15 and the upper fuel tank 16 can be positioned by the positioning plate 14, and the bottom is positioned by the positioning nail 17.

[0016] The body is fully insulated. The high-voltage coil 1 and the low-voltage c...

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Abstract

The invention relates to a transformer body structure for a single-phase traction transformer used for the AT power supply means, belonging to the transformer manufacturing technical field. The invention mainly comprises iron stems (15), a high voltage coil (1) and a low voltage coil (2) which are connected in series and are respectively arranged on two iron stems (15), etc, wherein, the low voltage coil has a radial splitting structure and consists of two or four coils; fiber container oil clearance insulating structures (13) are arranged between the two or four coils; the head end (3) of the high voltage coil has an interleaved winding structure; other sections of the high voltage coil have continuous winding structures; electrostatic rings (7) are arranged between the head end (3) and the tail end (4) of the high voltage coil and end rings; two angle rings (9) are symmetrically arranged between layers of the head end (3) and the tail end (4) of the high voltage coil and an yoke insulating layer (8). The overall structure design is reasonable; the transformer body structure has reliable insulating strength and overloading and short circuit resistant capabilities and can meet the requirements of the prior electrified railways.

Description

technical field [0001] The invention relates to a body structure of a single-phase traction transformer used in an AT power supply mode, and belongs to the technical field of transformer manufacturing. Background technique [0002] With the development of traction power supply methods for electrified railways, the use of AT power supply methods can double the feed voltage without increasing the insulation level of the traction network, which can double the power supply capacity of the traction network and expand the distance between traction substations , especially suitable for high-speed and heavy-duty electrified railways. Therefore, a single-phase railway traction transformer for AT power supply mode came into being. However, due to structural design defects of the existing single-phase traction transformer body structure, its insulation strength, overload and short-circuit resistance are still difficult to meet the needs of electrification. railway requirements. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F27/30H01F27/26H01F30/10
Inventor 鲁玮周保军马君张健王海龙
Owner WOLONG ELECTRIC YINCHUAN TRANSFORMER
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