Fan-shaped cushion block for converter transformers and installation method thereof

A technology for converting transformers and installation methods, applied in the direction of transformer/inductor coil/winding/connection, coil manufacturing, etc., can solve the problem of transformer oil passing through, reduce temperature rise, smooth axial oil flow, and improve electrical strength Effect

Active Publication Date: 2010-12-29
TBEA SHENYANG TRANSFORMER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the ±800kV converter transformer coil is equipped with an axial oil channel to reduce the temperature rise of the converter transformer under long-term working voltage, the traditional fan-shaped pad is set between the wires of the adjacent cakes of the coil, and the fan-shaped body of the fan-shaped pad It is a closed structure and cannot allow transformer oil to pass through, so it cannot meet the above requirements

Method used

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  • Fan-shaped cushion block for converter transformers and installation method thereof
  • Fan-shaped cushion block for converter transformers and installation method thereof
  • Fan-shaped cushion block for converter transformers and installation method thereof

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Embodiment Construction

[0019] Such as figure 1 , 2 As shown, the fan-shaped spacer 1 for the converter transformer of the present invention is installed in the vacancy after the transposition of the wire, and has a fan-shaped body 11, and the fan-shaped body 11 is provided with an open slot 12; the open slot 12 is multiple, and the coil The axial oil passages correspond to each other one by one. The slot spacing of the plurality of open slots 12 is the thickness of the transformer coil wires; the segment 11 has a block 13 extending from the inner diameter side to the center of the circle. In order to ensure the electric strength of the coil, the fan-shaped spacer 1 must be made of laminated cardboard. At the same time, the periphery of the fan-shaped spacer 1 must be chamfered, the surface treatment should be smooth and free of burrs, and its widthwise size cannot exceed the widthwise size of the coil.

[0020] Such as image 3 , 4 As shown, in this embodiment, the fan-shaped pad 1 is applied to...

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Abstract

The invention relates to a fan-shaped cushion block for converter transformers and an installation method thereof. The fan-shaped cushion block is installed at the vacant position after the wire transposition and provided with a quadrant, and the quadrant is provided with an open slot. The method comprises the following steps: under the support of internal support bars, winding a wire to reach the prescribed number of turns, transposing and continuing to wind; supplementing the fan-shaped cushion block to the vacant position caused by wire transposition; and clamping a clamping block on the fan-shaped cushion block on the internal support bars of the coil. When the high-capacity converter transformer coil is used in the voltage application process, the wire at the transposition position can not be deformed, and the coil surface at the transposition position is flat without pits, thereby enhancing the electric strength of the coil; and the invention ensures smooth axial oil flow of the coil and reduces the problems of temperature rise and the like under the long-term working voltage of the converter transformer.

Description

technical field [0001] The invention relates to a transformer preparation technology, in particular to a fan-shaped cushion block for a converter transformer and an installation method thereof. Background technique [0002] In the ±800kV converter transformer high-voltage power equipment, the fan-shaped spacer is generally used at the transposition of the spiral coil. Its function is to ensure that the wires at the transposition of the coil are not deformed during the coil compression process, and at the same time ensure that the transposition of the coil is not deformed. The surface of the coil is flat and free of depressions, thereby improving the electrical strength of the coil. Because the ±800kV converter transformer coil is equipped with an axial oil channel to reduce the temperature rise of the converter transformer under long-term working voltage, the traditional fan-shaped pad is set between the wires of the adjacent cakes of the coil, and the fan-shaped body of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F41/06
Inventor 高兴耀礼建石曲菠
Owner TBEA SHENYANG TRANSFORMER GRP CO LTD
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