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Transformer and coil assembly

A coil assembly and transformer technology, applied in the field of transformer equipment, can solve the problems of low working reliability and safety of transformers, large short-circuit mechanical force, short-circuiting of wires, etc., to prevent short-circuit mechanical force, avoid lateral magnetic flux leakage, and ensure reliability. Effects of Sex and Safety

Pending Publication Date: 2018-11-20
HENAN SENYUAN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a transformer to solve the problem of low reliability and safety of the transformer in the prior art
The purpose of the present invention is also to provide a coil assembly to solve the problems of large short-circuit mechanical force in the coil assembly in the prior art, which easily causes coil deformation and short-circuit of the wire

Method used

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  • Transformer and coil assembly
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Embodiment Construction

[0023] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] Specific embodiment 1 of transformer of the present invention, as Figure 1 to Figure 6 As shown, the transformer includes a housing 10 and a coil assembly 20 installed in the housing 10, and the housing is filled with insulating oil. The coil assembly 20 includes an iron core, a high voltage coil 6 and a low voltage coil 5 wound on the iron core. Among them, the low-voltage coils are double-helical in the longitudinal oil passage, and they are left-handed. The total number of turns of each phase coil is 18, such as Figure 6 As shown, the single-turn parallel winding form is 2*6, including the inner parallel winding wire 30 and the insulating sheath 31 outside the parallel winding wire 30 . Of course, the parallel winding method of the single-turn coil can also be adjusted according to actual design parameters.

[0025] The high-voltage coil ...

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Abstract

The invention provides a transformer and a coil assembly, and relates to the technical field of voltage transformation equipment. The transformer comprises a shell and the coil assembly mounted in theshell; the coil assembly comprises high-voltage coils arranged in a segmented mode, and low-voltage coils arranged in a segmented mode correspondingly; and an insulating assembly is arranged at the opposite ends of the two adjacent sections of the low-voltage coils. The low-voltage coils and the high-voltage coils are arranged in the segmented mode correspondingly, thus ampere-turn balance between the low-voltage coils and the high-voltage coils is kept, the situation of transverse magnetic leakage caused by imbalanced ampere-turn distribution is avoided, and the situations that transverse magnetic leakage generates short-circuit mechanical force, consequently, axial and radial deformation of the low-voltage coils are caused and short circuit of a wire is caused are prevented; and the problem of local overheating in the transformer is solved, and the reliability and safety of working of the transformer are ensured.

Description

technical field [0001] The invention relates to the technical field of transformer equipment, in particular to a transformer and a coil assembly. Background technique [0002] In the transformer, the coil assembly is a key component, including the corresponding high-voltage coil and low-voltage coil for electromagnetic induction. In order to reduce the local field strength and prevent the wires of the high-voltage coil from being broken down, the high-voltage coil usually adopts a segmented structure In the form, an insulator for upper and lower separation is arranged between two adjacent winding sections. However, due to the non-winding part of the high-voltage coil, the overall magnetic field of the coil assembly is affected, and the ampere-turn balance generated between the original low-voltage coil and the high-voltage coil is broken. When the ampere-turn distribution is unbalanced, a transverse magnetic flux leakage occurs. The transverse magnetic flux leakage will gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/00H01F27/12H01F27/28H01F27/32H01F27/34
CPCH01F27/006H01F27/12H01F27/2876H01F27/322H01F27/324H01F27/346
Inventor 张海峰孙银龙刘书霞
Owner HENAN SENYUAN ELECTRIC CO LTD
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