CN204289044U - A kind of coil of transformer shields indirectly - Google Patents
A kind of coil of transformer shields indirectly Download PDFInfo
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- CN204289044U CN204289044U CN201420753120.4U CN201420753120U CN204289044U CN 204289044 U CN204289044 U CN 204289044U CN 201420753120 U CN201420753120 U CN 201420753120U CN 204289044 U CN204289044 U CN 204289044U
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Abstract
The coil of a kind of transformer of the utility model shields indirectly, and comprise skeleton forming cylinder cylindrically, earthing is lifted one's head, and is radially wound on insulating paper and aluminum foil shielded paper between the ground floor on skeleton forming cylinder lateral wall successively; Termination, aluminum foil shielded paper two ends overturns 180 ° respectively to one side and forms circular arc electrode, and the electrical connection of any one end arranges earthing and lifts one's head.By adopting skeleton forming cylinder, in order to support the insulating paper between aluminum foil shielded paper and ground floor be arranged on outside it, and effectively ensure that the bulk strength of earthing, in order to support the electric power between interior loop and exterior loop; Adopt simultaneously and the termination at aluminum foil shielded paper two ends is overturn respectively to one side the mode that 180 ° form circular arc electrode, carry out even electric field herein, and the radial size of earthing is reduced, reduce the thickness of earthing, thus reduce the main leakage passage of the transformer that it takies, also assures that there is smooth electrode earthing end, effectively prevent creepage or discharge breakdown phenomenon.
Description
Technical field
The utility model belongs to the earthing device technical field of transformer, and the coil being specially a kind of transformer shields indirectly.
Background technology
Rectifier transformer is the power transformer of rectifying installation, is widely used in the industries such as electrochemical industry, traction DC power supply, transmission DC power supply, direct current transportation.In the iron core outer felt of rectifier transformer around low pressure winding and high pressure winding, be earthing between high and low pressure winding.Earthing to be placed in transformer between two coils, prevents from, during low pressure short circuit in winding, fault current is delivered to high-pressure side, but simultaneously because it takies the main leakage passage between coil, its stuctures and properties will affect the important parameters such as the impedance of transformer.Such as, earthing is radial oversize, can increase the thickness of earthing, thus more can take the main leakage passage of transformer; The insufficient strength of earthing, is just not enough to support the electric power between interior loop and exterior loop; The electrode of earthing is rough, easily causes the distance between earthing and coil too little and produces creepage or discharge breakdown phenomenon.There are the problems referred to above in the earthing of current employing, as electrode place adopts the end portion treatment mode of electrostatic ring and so on, the radial size of earthing can be increased, occupy more transformer main leakage passage, and its intensity and electrode smoother degree inadequate, have impact on the performance of transformer, easily cause transformer low voltage winding earth accident.
Utility model content
For problems of the prior art, the utility model provides a kind of reasonable in design, and compact conformation, dependable performance, has sufficient intensity, effectively can reduce the earthing of the transformer of radial size.
The utility model is achieved through the following technical solutions:
A kind of coil of transformer shields indirectly, and comprise skeleton forming cylinder cylindrically, earthing is lifted one's head, and is radially wound on insulating paper and aluminum foil shielded paper between the ground floor on skeleton forming cylinder lateral wall successively; Termination, aluminum foil shielded paper two ends overturns 180 ° respectively to one side and forms circular arc electrode, and the electrical connection of any one end arranges earthing and lifts one's head.
Preferably, between ground floor, the two ends of insulating paper overlap coiling insulation crimped paper respectively, and the free end of insulation crimped paper overturns 180 ° respectively to the side of coiling aluminum foil screen wallpaper and covers on aluminum foil screen wallpaper.
Further, the non-flip portion of insulation crimped paper is fixedly connected with aluminum foil shielded paper by insulating paper strip.Further again, insulating paper strip adopts Mylar paper tape.
Preferably, earthing is lifted one's head and is adopted copper braid over braid to make, and the both sides of copper braid over braid are welded on aluminum foil shielded paper, and copper braid over braid and aluminum foil shielded paper coupling part to be riveted by rivet and fix.
Preferably, also comprise and be arranged on insulation crimped paper and lift one's head the end circle of one end near earthing; End circle be fixedly connected with skeleton forming cylinder, and with insulate crimped paper overturn after thickness equal.
Further, also comprise covering successively and be wound on insulation crimped paper and hold insulating paper and insulating board between the second layer on enclosing.
Compared with prior art, the utility model has following useful technique effect:
The utility model, by adopting skeleton forming cylinder, in order to support the insulating paper between aluminum foil shielded paper and ground floor be arranged on outside it, and effectively ensure that the bulk strength of earthing, in order to support the electric power between interior loop and exterior loop; Simultaneously, adopt and the termination at aluminum foil shielded paper two ends is overturn respectively to one side the mode that 180 ° form circular arc electrode, carry out even electric field herein, and the radial size of earthing is reduced, reduce the thickness of earthing, thus reduce the main leakage passage of the transformer that it takies, also assures that there is smooth electrode earthing end, effectively prevent because the distance between earthing and coil is too little and produce creepage or discharge breakdown phenomenon; In addition, any one end electrical connection of aluminum foil shielded paper arranges earthing and lifts one's head, and ensures good electrical property.
Further; the upset mode identical with aluminum foil screen wallpaper taked by the insulation crimped paper adopted; the free end of insulating paper is made to cover on aluminum foil screen wallpaper; can effectively protect aluminum foil screen wallpaper on the one hand; the smooth performance of aluminum foil screen wallpaper two end electrodes can be guaranteed on the other hand, avoid creepage or discharge breakdown phenomenon.
Further, the mode non-flip portion of insulation crimped paper is fixedly connected with aluminum foil screen wallpaper by insulating paper strip, aluminum foil screen wallpaper generation shifting phenomena when can effectively ensure to overturn; Adopt Mylar paper tape as insulating paper strip simultaneously, ensure that entirety has good insulation property.
Further, make earthing by utilizing copper braid over braid to lift one's head, guarantee its good electrical property, and the both sides of copper braid over braid are welded on aluminum foil shielded paper, effectively ensure that electrical connection, fixed by rivet both coupling parts, improve the intensity of earthing entirety, useful life increases.
Accompanying drawing explanation
Fig. 1 is structure cutaway view of the present utility model.
Fig. 2 is the upset mode schematic diagram of the utility model aluminum foil shielded paper.
In figure: 1 is skeleton forming cylinder; 2 is layer insulation paper; 3 is aluminum foil shielded paper; 4 is layer insulation paper; 5 is insulating board; 6 is insulation crimped paper; 7 is end circle; 8 lift one's head for earthing.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, described in be to explanation of the present utility model instead of restriction.
The utility model comprises insulating paper 4 between insulating paper 2 between skeleton forming cylinder 1, ground floor, aluminum foil shielded paper 3, the second layer, insulating board 5, insulation crimped paper 6, end circle 7 and earthing and lifts one's head 8; Skeleton forming cylinder 1 cylindrically, its lateral wall is radially wound with successively insulating paper 2 and aluminum foil shielded paper 3 between ground floor; Termination, aluminum foil shielded paper 3 two ends overturns 180 ° respectively to one side and forms circular arc electrode, and the electrical connection of any one end arranges earthing and lifts one's head 8.
Wherein, between ground floor, the two ends of insulating paper 2 overlap coiling insulation crimped paper 6 respectively, and the free end of insulation crimped paper 6 overturns 180 ° respectively to the side of coiling aluminum foil screen wallpaper 3 and covers on aluminum foil screen wallpaper 3.The non-flip portion of insulation crimped paper 6 is fixedly connected with aluminum foil shielded paper 3 by insulating paper strip.Insulating paper strip adopts Mylar paper tape.Earthing is lifted one's head 8 employing copper braid over braids and is made, and the both sides of copper braid over braid are welded on aluminum foil shielded paper 3, and copper braid over braid and aluminum foil shielded paper 3 coupling part is riveted fixing by rivet.Also comprise and be arranged on insulation crimped paper 6 and lift one's head the end circle 7 of 8 one end near earthing; End circle 7 be fixedly connected with skeleton forming cylinder 1, and with insulate crimped paper 6 overturn after thickness equal.Also comprise covering to be successively wound on insulation crimped paper 6 and to hold insulating paper 4 and insulating board 5 between the second layer on circle 7.
When making the utility model in practice, as shown in Figure 1, be first wound on skeleton forming cylinder 1 by layer insulation paper 2 and insulation crimped paper 6, to be then wound on by aluminum foil shielded paper 3 on layer insulation paper 2 and flange, rivet welding earthing lifts one's head 8; To be insulated crimped paper 6 flange again, finally layer insulation paper 4 and insulating board 5 is wound on earthing.
Claims (6)
1. the coil of a transformer shields indirectly, it is characterized in that, comprise skeleton forming cylinder (1) cylindrically, earthing is lifted one's head (8), and is radially wound on insulating paper (2) and aluminum foil shielded paper (3) between the ground floor on skeleton forming cylinder (1) lateral wall successively; Described aluminum foil shielded paper (3) termination, two ends overturns 180 ° respectively to one side and forms circular arc electrodes, and the electrical connection of any one end arranges earthing and lifts one's head (8).
2. the coil of a kind of transformer according to claim 1 shields indirectly, it is characterized in that, between ground floor, the two ends of insulating paper (2) overlap coiling insulation crimped paper (6) respectively, and the free end of insulation crimped paper (6) overturns 180 ° respectively to the side of coiling aluminum foil screen wallpaper (3) and covers on aluminum foil screen wallpaper (3).
3. the coil of a kind of transformer according to claim 2 shields indirectly, it is characterized in that, the non-flip portion of insulation crimped paper (6) is fixedly connected with aluminum foil shielded paper (3) by insulating paper strip.
4. the coil of a kind of transformer according to claim 1 shields indirectly, it is characterized in that, earthing is lifted one's head (8) adopts copper braid over braid to make, the both sides of copper braid over braid are welded on aluminum foil shielded paper (3), and copper braid over braid and aluminum foil shielded paper (3) coupling part are riveted fixing by rivet.
5. the coil of a kind of transformer according to claim 1 shields indirectly, it is characterized in that, also comprises being arranged on insulation crimped paper (6) and lifting one's head the end circle (7) of (8) one end near earthing; End circle (7) be fixedly connected with skeleton forming cylinder (1), and with insulate crimped paper (6) overturn after thickness equal.
6. the coil of a kind of transformer according to claim 5 shields indirectly, it is characterized in that, also comprise covering successively and be wound on insulation crimped paper (6) and hold insulating paper (4) and insulating board (5) between the second layer on circle (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753120.4U CN204289044U (en) | 2014-12-03 | 2014-12-03 | A kind of coil of transformer shields indirectly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753120.4U CN204289044U (en) | 2014-12-03 | 2014-12-03 | A kind of coil of transformer shields indirectly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204289044U true CN204289044U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420753120.4U Active CN204289044U (en) | 2014-12-03 | 2014-12-03 | A kind of coil of transformer shields indirectly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204289044U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112714604A (en) * | 2019-10-26 | 2021-04-27 | 南通亚振电力科技有限公司 | High-pressure-resistant high-overload shielding paper and preparation method thereof |
-
2014
- 2014-12-03 CN CN201420753120.4U patent/CN204289044U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112714604A (en) * | 2019-10-26 | 2021-04-27 | 南通亚振电力科技有限公司 | High-pressure-resistant high-overload shielding paper and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160726 Address after: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee after: China XD Electronic Corporation Patentee after: Xi'an XD Transformer Co., Ltd. Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: China XD Electronic Corporation |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an XD Transformer Co., Ltd. Assignor: Xi'an Xidian Transformer Co., Ltd.|China Xidian electric Limited by Share Ltd Contract record no.: 2016610000045 Denomination of utility model: Earth shield between coils of transformer Granted publication date: 20150422 License type: Exclusive License Record date: 20160908 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model |