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Single-double continuous coil

A dual continuous, coil technology, applied in the direction of transformer/inductor coil/winding/connection, electrical components, transformer/inductor components, etc., can solve the problem of reducing the axial size of the wire, and the improvement effect of the hot spot at the end of the coil is not significant, etc. The problem is to reduce the axial size of the wire, increase the heat dissipation area and heat dissipation capacity, and control the temperature of the hot spot.

Active Publication Date: 2017-03-15
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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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] see figure 1 , the single-double continuous coil provided by the present invention is composed of a double continuous coil part 1, a single continuous coil part 2 and a coil transition part 3; the coil type of the double continuous coil part 1 is double continuous, single continuous The coil type of coil part 2 is single continuous type; the head end of the overall coil is wound as a double continuous type wire cake, and the other parts are wound as a single continuous type wire cake; A transposition is performed in the middle of part 1.

[0024] 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 sequentially a double continuous coil part 1, a coil transition part 3 and a single continuous coil part 2 from top to bottom; When th...

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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

[0001] Technical field: [0002] The invention relates to the field of power transformer manufacturing, in particular to a single-double continuous coil, which is suitable for coil equipment. [0003] Background technique: [0004] 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 th...

Claims

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Application Information

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Patent Type & Authority Applications(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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