CN203491072U - Grounding shielding device for dry-type rectifier excitation transformer - Google Patents
Grounding shielding device for dry-type rectifier excitation transformer Download PDFInfo
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- CN203491072U CN203491072U CN201320460971.5U CN201320460971U CN203491072U CN 203491072 U CN203491072 U CN 203491072U CN 201320460971 U CN201320460971 U CN 201320460971U CN 203491072 U CN203491072 U CN 203491072U
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- voltage coil
- excitation transformer
- dry
- copper foil
- rectifier excitation
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Abstract
The utility model discloses a grounding shielding device for a dry-type rectifier excitation transformer, and pertains to the field of substation equipment. The grounding shielding device for a dry-type rectifier excitation transformer comprises a low voltage coil, a high voltage coil and an insulating molding cylinder, wherein the high voltage coil is arranged outside the low voltage coil; the insulating molding cylinder is arranged between the low voltage coil and the high voltage coil; a copper foil layer is wound on the outer surface of the insulating molding cylinder; end parts of the copper foil layer are provided with cutoff gaps; and the inner and outer surfaces of the copper foil layer are coated with insulating layers. Compared with the prior art, the grounding shielding device for a dry-type rectifier excitation transformer has the advantages that the design is reasonable, the structure is simple, the use is convenient, the processing technology is simple, the application range is wide, the economic benefits are good and the like, and can meet operation requirements of the dry-type rectifier excitation transformer whose low voltage is the high voltage grade.
Description
Technical field
The utility model relates to converting equipment field, specifically dry rectifier excitation transformer earthing screen device.
Background technology
Dry rectifier excitation transformer is to add a layer Copper Foil in low-voltage coil outside by the winding method of traditional screen, the parasitic capacitance existing to reach effective shielded transformer, and can suppress the impact of harmonic wave on excitation system.But this structure is not suitable for the rectification excitation transformer that low pressure winding is voltage levels.
summary of the invention
Technical assignment of the present utility model is for above weak point, and a kind of dry rectifier excitation transformer earthing screen device simple in structure, easy to use is provided.
The utility model solves the technical scheme that its technical problem adopts: this dry rectifier excitation transformer earthing screen device comprises low-voltage coil, high-tension coil and insulation forming tube, described low-voltage coil is outside equipped with high-tension coil, between low-voltage coil and high-tension coil, be provided with insulation forming tube, the outer surface of insulation forming tube is wound with copper foil layer, the end of copper foil layer is provided with cutout gap, and the surfaces externally and internally of copper foil layer is coated with insulating barrier.
Between described insulation forming tube and low-voltage coil, be provided with a plurality of positioning strips.
The lower end of described copper foil layer is provided with ground lead.
Dry rectifier excitation transformer earthing screen device of the present utility model compared to the prior art, have reasonable in design, simple in structure, easy to use, processing technology is simple, applied widely, the feature such as good in economic efficiency, can meet low pressure is the service requirement of the dry rectifier excitation transformer of voltage levels.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Accompanying drawing 1 is the structural representation of dry rectifier excitation transformer earthing screen device.
Accompanying drawing 2 be in accompanying drawing 1 A-A to structural representation.
In figure: 1, low-voltage coil, 2, high-tension coil, 3, insulation forming tube, 4, copper foil layer, 5, insulating barrier, 6, positioning strip, 7, cutout gap, 8, ground lead.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Dry rectifier excitation transformer earthing screen device of the present utility model, its structure comprises low-voltage coil 1, high-tension coil 2 and insulation forming tube 3, described low-voltage coil 1 is outside equipped with high-tension coil 2, between low-voltage coil 1 and high-tension coil 2, be provided with insulation forming tube 3, between insulation forming tube 3 and low-voltage coil 1, be provided with a plurality of positioning strips 6, the outer surface of insulation forming tube 3 is wound with copper foil layer 4, the lower end of copper foil layer 4 is provided with ground lead 8, the end of copper foil layer 4 is provided with cutout gap 7, and the surfaces externally and internally of copper foil layer 4 is coated with insulating barrier 5.
Its processing and fabricating of dry rectifier excitation transformer earthing screen device of the present utility model is very simple and convenient, processing and fabricating shown in by specification accompanying drawing.
Except the technical characterictic described in specification, be the known technology of those skilled in the art.
Claims (3)
1. dry rectifier excitation transformer earthing screen device, comprise low-voltage coil, high-tension coil and insulation forming tube, it is characterized in that, described low-voltage coil is outside equipped with high-tension coil, between low-voltage coil and high-tension coil, be provided with insulation forming tube, the outer surface of insulation forming tube is wound with copper foil layer, and the end of copper foil layer is provided with cutout gap, and the surfaces externally and internally of copper foil layer is coated with insulating barrier.
2. dry rectifier excitation transformer earthing screen device according to claim 1, is characterized in that, between described insulation forming tube and low-voltage coil, is provided with a plurality of positioning strips.
3. dry rectifier excitation transformer earthing screen device according to claim 1, is characterized in that, the lower end of described copper foil layer is provided with ground lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460971.5U CN203491072U (en) | 2013-07-31 | 2013-07-31 | Grounding shielding device for dry-type rectifier excitation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460971.5U CN203491072U (en) | 2013-07-31 | 2013-07-31 | Grounding shielding device for dry-type rectifier excitation transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203491072U true CN203491072U (en) | 2014-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320460971.5U Expired - Fee Related CN203491072U (en) | 2013-07-31 | 2013-07-31 | Grounding shielding device for dry-type rectifier excitation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203491072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123526A (en) * | 2016-02-25 | 2017-09-01 | 上海龙怡机电材料有限公司 | The production method of insulating cylinder with function of shielding |
-
2013
- 2013-07-31 CN CN201320460971.5U patent/CN203491072U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123526A (en) * | 2016-02-25 | 2017-09-01 | 上海龙怡机电材料有限公司 | The production method of insulating cylinder with function of shielding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20180731 |
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| CF01 | Termination of patent right due to non-payment of annual fee |