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High-reliability neutralizing transformer and fabrication method thereof

A manufacturing method and reliable technology, applied in the manufacture of inductors/transformers/magnets, parts of transformers/inductors, coils, etc., can solve the problems of small voltage difference, poor electromagnetic shielding, and short service life of neutralizing transformers , to achieve the effect of low saturation magnetic induction, good stability and long service life

Inactive Publication Date: 2016-12-07
郑洪华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Among the relevant patents that have been applied in China, the patent "Ultra-small Neutralization Transformer" (application number: CN94241849.2, publication date: 1995-03-01) discloses a silicon steel sheet iron core and high-permeability ferrite The neutralization transformer with a body iron core, but because the core material with low magnetic flux leakage, low coercive force and high magnetic permeability is still not used, there will still be a large interference magnetic field, and the invention does not adopt the influence of the magnetic field. The small wire group material, the ceramic skeleton (2) with excellent electromagnetic insulation performance, and the insulating and heat-conducting material with high volume resistivity are not used, so that the attenuated voltage difference of the neutralization transformer of the present invention is small, and the reliability is poor. And the electromagnetic shielding is poor, the heat dissipation is poor, easy to age, and the service life is short

Method used

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  • High-reliability neutralizing transformer and fabrication method thereof

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Effect test

Embodiment 1

[0044] Such as figure 1A high-reliability neutralization transformer shown in the figure uses a special molybdenum permal core 3, carbon fiber wire with 1140 epoxy polyester insulating paint, a specific ceramic skeleton 2, and an aluminum alloy full Closed shielding cover 1. Heat-vulcanized silicone rubber is applied; the molybdenum Permal magnetic core 3 is sealed in the ceramic skeleton 2 by epoxy resin, and the carbon fiber wire is wound on the ceramic skeleton 2 according to the standard method to form a winding 6. The surface of the winding 6 And the gap between the winding 6 and the ceramic skeleton 2 is filled with heat vulcanized silicone rubber, and the heat vulcanized silicon rubber is also encapsulated with epoxy resin; the aluminum alloy shielding cover 1 covers the entire neutralization transformer except the shielding cover 1 , using a fully enclosed structure.

[0045] The high-reliability neutralization transformer manufacturing method includes the following s...

Embodiment 2

[0079] Such as figure 1 A high-reliability neutralization transformer shown in the figure uses a special molybdenum permal core 3, carbon fiber wire with 1140 epoxy polyester insulating paint, a specific ceramic skeleton 2, and an aluminum alloy full Closed shielding cover 1. Heat-vulcanized silicone rubber is applied; the molybdenum Permal magnetic core 3 is sealed in the ceramic skeleton 2 by epoxy resin, and the carbon fiber wire is wound on the ceramic skeleton 2 according to the standard method to form a winding 6. The surface of the winding 6 And the gap between the winding 6 and the ceramic skeleton 2 is filled with heat vulcanized silicone rubber, and the heat vulcanized silicon rubber is also encapsulated with epoxy resin; the aluminum alloy shielding cover 1 covers the entire neutralization transformer except the shielding cover 1 , using a fully enclosed structure.

[0080] The high-reliability neutralization transformer manufacturing method includes the following ...

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Abstract

The invention discloses a high-reliability neutralizing transformer and a fabrication method thereof. A high-stability molybdenum permalloy magnetic core is obtained by controlling formation, fixing and multi-circulation processing on impact-stress relief-deformation-correction-stress relief of the molybdenum permalloy magnetic core, uniform and long carbon fibers are fabricated by a sol-gel method, and the performance of each aspect of the high-reliability neutralizing transformer is improved with the adoption of an aluminum nitride ceramic framework having excellent electromagnetic performance, a totally enclosed type aluminum alloy shielding cover and high-insulativity silicone rubber. The high-reliability neutralizing transformer disclosed by the invention has the advantages of high stability, relatively large attenuated voltage times difference, long service lifetime, good electromagnetic shielding performance, excellent cooling performance and high reliability.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a high-reliability neutralization transformer and a manufacturing method thereof. Background technique [0002] The neutralization transformer is formed by winding two coils with the same number of turns and the same size on the same iron core or magnetic core. A device for attenuating the residual voltage of the high-voltage line group when the residual voltage of the high-voltage line group is far greater than the acceptable electromagnetic induction level of the secondary equipment chip. [0003] Molybdenum material has high magnetic permeability, saturation magnetic induction intensity and low coercive force and resistivity, mainly used in small, high-sensitivity transformers, amplifiers, relays, choke coils, and recording heads used in weak magnetic fields , Magnetic shielding, etc., is one of the most stable magnetic core materials. [0004] Among the relevant patents...

Claims

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Application Information

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IPC IPC(8): H01F41/00H01F41/02H01F1/147H01F27/245H01F41/12
CPCH01F41/00H01F1/14716H01F27/245H01F41/005H01F41/0233H01F41/127
Inventor 郑洪华
Owner 郑洪华
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