CN201522927U - Dry-type exciting rectifier transformer grounded shield device - Google Patents
Dry-type exciting rectifier transformer grounded shield device Download PDFInfo
- Publication number
- CN201522927U CN201522927U CN2009202218621U CN200920221862U CN201522927U CN 201522927 U CN201522927 U CN 201522927U CN 2009202218621 U CN2009202218621 U CN 2009202218621U CN 200920221862 U CN200920221862 U CN 200920221862U CN 201522927 U CN201522927 U CN 201522927U
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- rectifier transformer
- copper foil
- dry
- shield device
- dry type
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Abstract
The utility model relates to a dry-type exciting rectifier transformer grounded shield device, belonging to the technical field of transformers. The dry-type exciting rectifier transformer grounded shield device is characterized in that the grounded shield device is assembled between a high-voltage winding and a low-voltage winding of a transformer, a shield layer is formed by winding copper foil; the end part of the copper coil is provided with a flow blocking clearance; and the copper coil is provided with a grounding lead. The dry-type exciting rectifier transformer grounded shield device has the advantages of simple structure, convenient use, easy processing, low cost, reduction of electrical loss, wide applicable range, good economic benefits and the like.
Description
Technical field
The utility model belongs to the transformer technology field, particularly relates to a kind of dry type excitation rectifier transformer earthing screen device.
Background technology
At present, the horizontal leakage flux that produces except that the local magnetic potential imbalance of first and second winding in the excitation transformer main empty path, most of leakage flux is that parallel transformer is in axial direction, only two ends bend about coil, and (outer coil is by the air closure, inner coil is by unshakable in one's determination closed), the magnetic line of force produces eddy current in this part easily with the top and the bottom that pass across shielding of different angles.In order to reduce the influence of high order harmonic component between the dry type excitation rectifier transformer high and low pressure, between the high and low pressure winding, add around the electrostatic screen layer.But after installing screen additional, the eddy current that stray field produces in screen during operation will increase the load loss of transformer.
Summary of the invention
The utility model provides a kind of dry type excitation rectifier transformer earthing screen device for solving the technical problem that exists in the known technology.
The purpose of this utility model provides a kind of have simple in structure, easy to use, handling ease, with low cost, the dry type excitation rectifier transformer earthing screen device that reduces characteristics such as electricity damage.
Magnetic line of force major part in the excitation transformer main empty path is that parallel transformer is in axial direction, only two ends bend about coil, and (outer coil is by the air closure, inner coil is by unshakable in one's determination closed), the magnetic line of force produces eddy current in this part easily with the top and the bottom that pass across shielding of different angles.For addressing this problem, the upper and lower end face of shielding is offered the cutout groove, draw by the 30mm copper strips that the shielding Copper Foil is cut, then screen is wound on the outside (low pressure is integrated poured) or insulating cylinder of low pressure winding.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of dry type excitation rectifier transformer earthing screen device is characterized in: earthing screen device is assemblied between transformer high-voltage and low pressure winding, and screen forms for the Copper Foil coiling, and the Copper Foil end is provided with the cutout gap, and Copper Foil is provided with ground lead.
The utility model can also adopt following technical scheme:
Described dry type excitation rectifier transformer earthing screen device is characterized in: ground lead is that the cutting of Copper Foil limit constitutes.
Described dry type excitation rectifier transformer earthing screen device is characterized in: ground lead is that the cutting of Copper Foil limit does not have welding and is converted into structure.
Described dry type excitation rectifier transformer earthing screen device is characterized in: the Copper Foil upper and lower end parts is equipped with the cutout gap, and cutout is spaced apart 100-300mm between the gap.
Described dry type excitation rectifier transformer earthing screen device, be characterized in: the cutout gap depth is 100-500mm.
Advantage and the good effect that the utlity model has are:
Dry type excitation rectifier transformer earthing screen device is owing to adopted the utility model brand-new technology scheme, compared with prior art, the eddy current of leakage flux on screen, the supplementary load loss when having reduced transformer load have been blocked in the cutout gap, improve the efficient of product, saves energy.The utlity model has simple in structure, easy to use, handling ease, with low cost, reduce that electricity decreases, advantage such as applied widely and good in economic efficiency.
Description of drawings
Fig. 1 is an assembly structure schematic diagram of the present utility model;
Fig. 2 is an earth shield Copper Foil deployed configuration schematic diagram among Fig. 1.
Among the figure, 1. low-voltage coil, 2. earth shield, 3. insulating cylinder, 4. high-tension coil, 5. cutout gap, 6. lead-in wire.
Embodiment
For further understanding technology contents of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
A kind of dry type excitation rectifier transformer earthing screen device is assemblied between transformer high-voltage coil 4 and low-voltage coil 1 winding, is positioned at insulating cylinder 3 inboards.Earth shield 2 forms for the coiling of 0.5mm Copper Foil, is cylinder-like structure.A cutout gap 5 is cut off every 150mm in the Copper Foil end, and Copper Foil is provided with ground lead, and the 30mm copper strips that lead-in wire 6 is cut by screen itself is drawn, the wire bonds on the cancellation screen, all corner angle abates.Ground lead 2 does not have welding for the cutting of Copper Foil limit and is converted into structure.The Copper Foil upper and lower end parts is equipped with the cutout gap, and cutout is spaced apart 150mm between the gap, and the cutout gap depth is 230mm.Adopt the screen of this structure, can reduce the product load loss effectively, improve operational efficiency.
Claims (5)
1. dry type excitation rectifier transformer earthing screen device, it is characterized in that: earthing screen device is assemblied between transformer high-voltage and low pressure winding, and screen forms for the Copper Foil coiling, and the Copper Foil end is provided with the cutout gap, and Copper Foil is provided with ground lead.
2. according to the described dry type excitation of claim 1 rectifier transformer earthing screen device, it is characterized in that: ground lead is that the cutting of Copper Foil limit constitutes.
3. according to the described dry type excitation of claim 2 rectifier transformer earthing screen device, it is characterized in that: ground lead is that the cutting of Copper Foil limit does not have welding and is converted into structure.
4. according to claim 1,2 or 3 described dry type excitation rectifier transformer earthing screen devices, it is characterized in that: the Copper Foil upper and lower end parts is equipped with the cutout gap, and cutout is spaced apart 100-300mm between the gap.
5. according to claim 1,2 or 3 described dry type excitation rectifier transformer earthing screen devices, it is characterized in that: the cutout gap depth is 100-500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202218621U CN201522927U (en) | 2009-11-03 | 2009-11-03 | Dry-type exciting rectifier transformer grounded shield device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202218621U CN201522927U (en) | 2009-11-03 | 2009-11-03 | Dry-type exciting rectifier transformer grounded shield device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201522927U true CN201522927U (en) | 2010-07-07 |
Family
ID=42509103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202218621U Expired - Fee Related CN201522927U (en) | 2009-11-03 | 2009-11-03 | Dry-type exciting rectifier transformer grounded shield device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201522927U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996751A (en) * | 2010-11-03 | 2011-03-30 | 天津市特变电工变压器有限公司 | Epoxy resin pouring shielding cylinder of transformer |
| CN102543396A (en) * | 2012-02-18 | 2012-07-04 | 山东达驰电气有限公司 | Grounding screen structure of iron core of transformer |
| CN110783094A (en) * | 2019-10-14 | 2020-02-11 | 山东电力设备有限公司 | Method for welding external shielding wire of converter transformer |
-
2009
- 2009-11-03 CN CN2009202218621U patent/CN201522927U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996751A (en) * | 2010-11-03 | 2011-03-30 | 天津市特变电工变压器有限公司 | Epoxy resin pouring shielding cylinder of transformer |
| CN102543396A (en) * | 2012-02-18 | 2012-07-04 | 山东达驰电气有限公司 | Grounding screen structure of iron core of transformer |
| CN110783094A (en) * | 2019-10-14 | 2020-02-11 | 山东电力设备有限公司 | Method for welding external shielding wire of converter transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20161103 |