CN201927462U - Electric shielding structure for interphase connecting wire or O-point lead wire of transformer winding - Google Patents
Electric shielding structure for interphase connecting wire or O-point lead wire of transformer winding Download PDFInfo
- Publication number
- CN201927462U CN201927462U CN2010206625070U CN201020662507U CN201927462U CN 201927462 U CN201927462 U CN 201927462U CN 2010206625070 U CN2010206625070 U CN 2010206625070U CN 201020662507 U CN201020662507 U CN 201020662507U CN 201927462 U CN201927462 U CN 201927462U
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- China
- Prior art keywords
- wire
- transformer winding
- outgoing cable
- transformer
- screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 title claims abstract description 15
- 230000016507 interphase Effects 0.000 title abstract 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 title abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 8
- 239000005030 aluminium foil Substances 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract 3
- 239000010949 copper Substances 0.000 abstract 3
- 239000010410 layer Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 2
- 150000001398 aluminium Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
An electric shielding structure for an interphase connecting wire or an O-point lead wire of a transformer winding comprises a group of flat copper wires, an outgoing cable and a shielding layer, wherein the flat copper wires and the outgoing cable are welded together; a filled layer is wrapped at the welding joint of the flat copper wires and the outgoing cable; and the shielding layer is wrapped on the filled layer. In the utility model, the shielding effect of the shielding layer is improved, the reliability of a transformer is improved, and the electric shielding structure is simple and practical and has stable and reliable properties.
Description
Technical field
The utility model relates to a kind of transformer technology field, the alternate line of especially a kind of Transformer Winding or " O " some lead-in wire electric shield structure.
Background technology
Transformer manufactory is in the large-scale power transformer production process, and regular meeting runs into partial discharge of transformer and tests defective phenomenon.It is a lot of to cause that the reason that exceeds standard is put in office, for example the transformer device structure design is unreasonable, bubble is arranged in the oil, there is metallic foreign body in insulating part inside, fuel tank magnetic screen imperfect earth, multipoint earthing unshakable in one's determination, winding static board is jagged, fastening bolt or metal parts are fastening bad etc. in the transformer, and also having a more common main cause is that the transformer lead electric shield is bad.Whether the quality of lead-in wire electric shield quality directly influences the partial discharge of transformer test qualified.Tree dsicharge vestige and charing point are arranged the partial discharge test substandard product being hung inspection when dissected often find to go between electric shield material therefor metallization crimped paper, aluminium foil surface.There is spark tracking at shielding hole, position place, with the crimped paper of shielded surfaces contact position point of discharge is arranged and interlayer is creepage or puncture indivedual serious creepage occurring in from lead-in wire crimped paper to the outermost tape of lead-in wire electric shield.
In the Coefficients of Large Power Transformer Winding, the alternate line of Transformer Winding or " O " some lead-in wire adopt one group of flat type copper wire to weld mutually with leader cable usually, after the welding, remove cleaning its burr, welding slag and oxide skin etc. earlier, because its joint is the welding of overlap joint back, there are wedge angle, burr etc.,, wrap screens such as aluminium foil at its joint surface usually for reducing its partial discharge.Because joint exists wedge angle, burr behind the overlap joint, is easy to wear out screens such as aluminium foil like this, screens such as aluminium foil do not have the effect of shielding, cause electric field to be concentrated easily, cause the office of joint to put increasing, produce point discharge, influence the performance of transformer.For stopping the generation of this situation, also can on joint, wrap up screens such as laminated aluminium foil, it is full that bag is filled out in the joint, though do not exist joint lap-joint to destroy the screen phenomenon like this, increased cost.
The utility model content
The utility model main purpose is to overcome the deficiency that above-mentioned prior art exists, the alternate line of Transformer Winding or " O " some lead-in wire electric shield structure is provided, can solve outlet of winding middle part and winding lifts one's head the wire bonds joint and destroys the screen phenomenon, put with the office that reduces joint, cost is low, rational in infrastructure, technology is simple.
The technical scheme that technical problem adopted that the utility model solves is: the alternate line of Transformer Winding or " O " some lead-in wire electric shield structure, comprise one group of flat type copper wire, outgoing cable and screen, flat type copper wire welds mutually with outgoing cable, it is characterized in that being provided with packed layer, on packed layer, be surrounded by above-mentioned screen at the joint bag of flat type copper wire and outgoing cable welding.Packed layer can be cable paper and insulation crimped paper etc.
As preferably, described packed layer is insulation crimped paper.
As preferably, screen is an aluminium foil.
Owing between the joint of screen and flat type copper wire and outgoing cable, increased packed layers such as insulation crimped paper, increase cost seldom, and terminal just can not hurt screen, has improved the function of shielding of screen, the office that has reduced transformer puts.Be easy to guarantee electrical distance for the high voltage product like this, reduced partial discharge and owing to hurt the electric discharge phenomena of the joint that screen causes, thereby partial discharge quantity is reduced significantly, and simple and practical, stable and reliable for performance, the scope of application is comparatively extensive.
The beneficial effects of the utility model are: the utility model has improved the shielding action of screen, has improved the reliability of transformer, and simple and practical, stable and reliable for performance.
Description of drawings
Below in conjunction with drawings and Examples utility model is further specified.
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the A-A profile of Fig. 1.
Among the figure: 1, flat type copper wire 2, outgoing cable 3, insulation crimped paper 4, aluminium foil
Embodiment
According to Fig. 1, shown in Figure 2, embodiment states to the utility model below:
Among Fig. 1, Fig. 2, the alternate line of Transformer Winding or " O " some lead-in wire electric shield structure, comprise one group of flat type copper wire 1, outgoing cable 2 and screen, flat type copper wire 1 welds mutually with outgoing cable 2, be provided with the packed layer of insulation crimped paper 3 at the flat type copper wire 1 and the joint bag of outgoing cable 2 welding, be surrounded by above-mentioned screen on insulation crimped paper 3, screen is an aluminium foil 4.
Owing between the joint that the screen of aluminium foil 4 and flat type copper wire 1 and outgoing cable 2 weld, increased insulation crimped paper 3 packed layers, increase cost seldom, and terminal just can not hurt aluminium foil 4, has improved the function of shielding of aluminium foil 4, and the office that has reduced transformer puts.Be easy to guarantee electrical distance for the high voltage product like this, reduced partial discharge and owing to hurt the electric discharge phenomena of the joint that screen causes, thereby partial discharge quantity is reduced significantly, and simple and practical, stable and reliable for performance, the scope of application is comparatively extensive.
During concrete the making, at first the flat type copper wire 1 and the insulation of outgoing cable 2 leads will be removed, with wooden Chui lead be carried out smoothly, attention must not be twisted and damage wires; Flat type copper wire 1 is frustrated flat, sanding with outgoing cable 2 weld wedge angles and welding slag; The lead of joint is filled the wrapping consolidation with insulation crimped paper 3 on four sides; At wrapping aluminium foil 4, shielding construction is finished.
At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from disclosed content of the present utility model all should be thought protection range of the present utility model.
Claims (3)
1. the alternate line of Transformer Winding or " O " put lead-in wire electric shield structure, comprise one group of flat type copper wire, outgoing cable and screen, flat type copper wire welds mutually with outgoing cable, it is characterized in that being provided with packed layer, on packed layer, be surrounded by above-mentioned screen at the joint bag of flat type copper wire and outgoing cable welding.
2. the alternate line of Transformer Winding according to claim 1 or " O " some lead-in wire electric shield structure is characterized in that described packed layer is insulation crimped paper.
3. the alternate line of Transformer Winding according to claim 1 and 2 or " O " some lead-in wire electric shield structure is characterized in that described screen is an aluminium foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206625070U CN201927462U (en) | 2010-12-09 | 2010-12-09 | Electric shielding structure for interphase connecting wire or O-point lead wire of transformer winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206625070U CN201927462U (en) | 2010-12-09 | 2010-12-09 | Electric shielding structure for interphase connecting wire or O-point lead wire of transformer winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927462U true CN201927462U (en) | 2011-08-10 |
Family
ID=44431299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206625070U Expired - Lifetime CN201927462U (en) | 2010-12-09 | 2010-12-09 | Electric shielding structure for interphase connecting wire or O-point lead wire of transformer winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201927462U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592797A (en) * | 2012-03-19 | 2012-07-18 | 正泰电气股份有限公司 | Coil outlet method for reducing transformer partial discharge |
| CN108335884A (en) * | 2018-05-03 | 2018-07-27 | 佛山市科蓝环保科技股份有限公司 | The shielded layer made of copper-clad plate |
-
2010
- 2010-12-09 CN CN2010206625070U patent/CN201927462U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592797A (en) * | 2012-03-19 | 2012-07-18 | 正泰电气股份有限公司 | Coil outlet method for reducing transformer partial discharge |
| CN102592797B (en) * | 2012-03-19 | 2014-11-26 | 正泰电气股份有限公司 | Coil outlet method for reducing transformer partial discharge |
| CN108335884A (en) * | 2018-05-03 | 2018-07-27 | 佛山市科蓝环保科技股份有限公司 | The shielded layer made of copper-clad plate |
| CN108335884B (en) * | 2018-05-03 | 2024-04-05 | 佛山市科蓝环保科技股份有限公司 | Shielding layer made of copper-clad plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 324100, 84, Tiger Hill Road, Jiangshan, Zhejiang Patentee after: Zhejiang Jiangshan Transformer Co., Ltd. Address before: 324100, 84, Tiger Hill Road, Jiangshan, Zhejiang Patentee before: Zhejiang Jiangshan Transformer Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |