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Railway high voltage traction transformer

A traction transformer and high-voltage technology, applied in the field of transformer manufacturing, can solve the problems of loose winding and iron core, displacement or damage of the box and body, affecting the insulation strength of the transformer, overload and short-circuit resistance, etc. The effect of balanced pressure and reasonable overall structure

Active Publication Date: 2009-03-18
WOLONG ELECTRIC YINCHUAN TRANSFORMER
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, since the transformer is subjected to various impact forces (starting and stopping of trains, bumps in road transportation, swings in waterway transportation, etc.) The body is prone to unacceptable displacement or damage, and the winding and iron core are prone to loosening, which affects the insulation strength, overload and short-circuit resistance of the transformer.

Method used

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Embodiment Construction

[0021] The present invention mainly comprises the box body 12 of band oil tank case edge 19, places the device body that is made of winding 1 and iron core 2 in the box body 12, the fuel tank that is made of last fuel tank 14 and lower fuel tank 8.

[0022] The struts and pads 3 in the winding 1 are all made of densified cardboard, and its elastic deformation is very small. The cardboard used for the insulating end ring 4 at both ends of the winding is also densified and then hot-pressed. A cardboard tube 5 is set on the inner diameter of the winding, and there are inner and outer stays to ensure the mechanical strength of the winding. not loose.

[0023] Set multiple drawstrings 6 at the upper and lower iron yokes to tighten the iron core 2, and add outer drawstrings 9 outside the lower part of the iron core to tighten the iron core. , The high-voltage upper clamp 13 and the low-voltage upper clamp 7 form a solid whole with the iron core.

[0024] A high-strength pressure p...

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Abstract

A railway high voltage traction transformer belongs to transformer manufacturing technology field. It contains casing with two bottom, main unit consisting of and iron core, oil tank having two sections, both end of winding having insulation end ring with inner fiber container, side beam, upward pull strap, foot pad, drawplate, high voltage and low voltage upper yoke clamping to form one hard entirety winding axial direction fastened through pressure nail and drawplate, upper part of tank set with four positioning device, main unit located on casing bottom. Said invention can prevent displacement or damage between casing and main unit in transportation process and without suspended core inspection in arriving site.

Description

technical field [0001] The invention relates to a railway high-voltage traction transformer, which belongs to the technical field of transformer manufacturing. Background technique [0002] The voltage of my country's railway traction lines to the track is 27.5kV, and the power supply voltage of the three-phase power system that supplies power to the traction lines is usually 110kV or 220kV. At present, most of the traction transformers used in my country's railway traction lines are of 110kV voltage level, and the line loss of 110kV level traction transformers is very large, and the operating cost is also very high. With the continuous development of my country's electrified railways, the 220kV power supply system is more stable and reliable, and the single-phase power supply is more in line with the characteristics of railway power consumption. The protection is simple and the investment is small, which can effectively reduce railway operating costs. Therefore, 220kV sing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F30/00H01F27/26H01F27/30
Inventor 白忠东鲁玮杨夏马君张永华
Owner WOLONG ELECTRIC YINCHUAN TRANSFORMER
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