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Dry type transformer and production process of high-voltage coil thereof

A technology of dry-type transformers and high-voltage coils, applied in the direction of transformer/inductor coil/winding/connection, coil manufacturing, etc., to achieve good chemical corrosion resistance, ensure technical performance parameters, and reduce noise

Inactive Publication Date: 2013-11-27
黄成明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention solves the creepage phenomenon on the surface of the high-voltage coil of the dry-type transformer

Method used

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  • Dry type transformer and production process of high-voltage coil thereof
  • Dry type transformer and production process of high-voltage coil thereof
  • Dry type transformer and production process of high-voltage coil thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The process steps of using NMN silicone rubber composite material to produce high-voltage coil of dry-type transformer:

[0050] 1. Clean the inner mold, apply mold release oil, and paste mold release paper;

[0051] 2. Install the silicone rubber composite material, take the NMN silicone rubber composite sheet with a thickness of 1.5mm, and contact the silicone rubber surface of the NMN silicone rubber composite sheet with the release paper surface;

[0052] 3. Install a 1mm grid 3 close to the NMN silicone rubber composite sheet, wind the electromagnetic coil 7 of the high voltage coil, and install a 1mm grid 3 close to the electromagnetic coil 7 of the high voltage coil;

[0053] 4. Install the silicone rubber composite material, take the NMN silicone rubber composite sheet with a thickness of 1.5mm, and contact the NMN surface of the NMN silicone rubber composite sheet with the 3 surfaces of the 1mm grid;

[0054] 5. Install outer mold, epoxy resin pouring, curing, coil polis...

Embodiment 2

[0056] The process steps of using MN silicone rubber composite material to produce dry-type transformer high voltage coil:

[0057] 1. Clean the inner mold, apply mold release oil, and paste mold release paper;

[0058] 2. Install the silicone rubber composite material, take the MN silicone rubber composite sheet with a thickness of 2mm, and contact the silicone rubber surface of the MN silicone rubber composite sheet with the release paper surface;

[0059] 3. Install a 1mm grid 3 close to the MN silicon rubber composite sheet, wind the electromagnetic coil 7 of the high voltage coil, and install a 1mm grid 3 close to the electromagnetic coil of the high voltage coil;

[0060] 4. Install the silicone rubber composite material, take the MN silicone rubber composite sheet with a thickness of 2mm, and contact the MN surface of the MN silicone rubber composite sheet with the 3 surfaces of the 1mm grid;

[0061] 5. Install outer mold, epoxy resin pouring, curing, coil polishing and finishin...

Embodiment 3

[0063] The process steps of using DMD silicone rubber composite material to produce dry-type transformer high voltage coil:

[0064] 1. Clean the inner mold, apply mold release oil, and paste mold release paper;

[0065] 2. Install the silicone rubber composite material, take a DMD silicone rubber composite sheet with a thickness of 1.5 mm, and contact the silicone rubber surface of the DMD silicone rubber composite sheet with the release paper surface;

[0066] 3. Install a 1mm grid 3 close to the DMD silicon rubber composite sheet, wind the electromagnetic coil 7 of the high-voltage coil, and install the 1mm grid 3 of the electromagnetic coil 7 close to the high-voltage coil;

[0067] 4. Install the silicone rubber composite material, take the DMD silicone rubber composite sheet with a thickness of 1.5mm, and contact the DMD surface of the DMD silicone rubber composite sheet with the 3 surfaces of the 1mm grid;

[0068] 5. Install outer mold, epoxy resin pouring, curing, coil polishin...

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Abstract

The invention relates to the technical field of insulating structures of dry type transformers. The fatal defect in the dry type transformation industry is that the size and material consumption of a dry type transformation which is mainly insulated by adopting epoxy resin and air, the phenomenon of creepage on the surfaces of the high-voltage coils during running, and the transformer is burned down under severe conditions. The invention discloses a dry type transformer and production process steps of a high-voltage coil thereof. The high-voltage coil consists of an insulating silicon rubber composite material, a grid, an electromagnetic coil, a grid, an insulating silicon rubber composite material and cast epoxy resin in sequence from inside to outside. The dry type transformer has the advantages of simple structure and convenience in process operation. The technical performance parameters of the dry type transformer can be ensured, the reliability is enhanced, cost is reduced, the service life is long, and noise can be lowered.

Description

Technical field [0001] The invention relates to the technical field of transformers, and more specifically to the technical field of dry-type transformer insulation structures. Background technique [0002] Epoxy resin cast dry-type transformers are widely used in power grids. However, its main insulation structure has not changed in 25 years. The main insulation is epoxy resin + air. The 10~35kV epoxy resin dry-type transformers commonly produced and used must meet the standard requirements of power frequency withstand voltage and lightning shock. The air path distance is 33~95mm, the phase spacing is 33~95mm, the distance between the coil end face and the iron core is between 40~60mm; this structure hinders the optimal design of epoxy resin dry-type transformer, the volume of the transformer and the amount of material Can not be lowered, this is a flaw in the dry-type transformer industry. [0003] When dry-type transformers are in operation, there are creepage phenomena on the...

Claims

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Application Information

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IPC IPC(8): H01F27/32H01F27/30H01F41/04H01F41/12
Inventor 黄成明
Owner 黄成明
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