A single-double continuous coil

A double-continuous and continuous technology, applied in the direction of transformer/inductor coil/winding/connection, electrical components, transformer/inductor parts, etc., can solve the problem of insignificant improvement of hot spots at the end of the coil and reduce the axial size of the wire and other issues, to achieve the effect of increasing the heat dissipation area and heat dissipation capacity, reducing the axial specification of the wire, and compacting the overall size

Active Publication Date: 2018-06-15
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional end wire replacement cannot greatly reduce the axial dimension of the wire, but can only slightly reduce the lateral eddy current at the end, and has no significant effect on improving the hot spots at the end of the coil

Method used

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  • A single-double continuous coil
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  • A single-double continuous coil

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] see figure 1 , the single-double continuous coil provided by the present invention is composed of double continuous wire cake 1, single continuous wire cake 2 and coil transition wire cake 3; the coil type of double continuous wire cake 1 is double continuous, single continuous The coil type of type 2 is single-continuous; the head end of the overall coil is wound as a double-continuous coil, and the other parts are wound as a single-continuous coil; Carry out a transposition in the middle of the line cake 1.

[0019] Please parameter figure 1 As shown, when the single-double continuous coil in the present invention is mainly used to reduce the temperature rise of hot spots, the coils are double continuous coil 1, coil transition coil 3 and single continuous coil 2 from top to bottom; When the single-double continuous coil in the present invention i...

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Abstract

The invention discloses a single-double continuous coil, and relates to the field of power transformer manufacturing. The coil sequentially comprises a double continuous coil part (1), a coil transition part (3) and a single continuous coil part (2) from top to bottom, or sequentially comprises the double continuous coil part (1), the coil transition part (3), the single continuous coil part (2), the coil transition part (3) and the double continuous coil part (1) from top to bottom. Furthermore, primary transposition can be carried out in the middle part of the double continuous coil part (1) according to the requirements; and line change is carried out between a single continuous line cake and a double continuous line cake in the coil transition part (3). The single-double continuous coil has respective advantages of the single continuous coil and the double continuous coil and the temperature of hot spots at the end part of the coil can be effectively controlled through greatly reducing the eddy-current loss of the end part of the coil and improving the heat dissipation capability of the positions of the hot spots.

Description

Technical field: [0001] The invention relates to the field of power transformer manufacturing, in particular to a single-double continuous coil, which is suitable for coil equipment. Background technique: [0002] With the release of new standards for temperature rise of liquid-immersed transformers and the sharp drop in the price of optical fiber temperature measuring devices, the temperature rise of hot spots in transformer coils has attracted more and more attention. When the product has strict requirements on the temperature rise of the hot spot of the transformer coil, or needs to install an optical fiber temperature measuring device to directly measure the hot spot temperature of the coil, the transformer manufacturer needs to strictly control the hot spot temperature of the coil at a reasonable cost. According to the nature of the transformer magnetic field, the magnetic field distortion at the end of the coil is serious, and the eddy current loss of the end line cake...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/28
CPCH01F27/2828
Inventor 李子兴瞿建峰张逸刘政道孙佳忠
Owner CHINA XD ELECTRIC CO LTD
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