CN100583323C - Transformer coil external wire shielding and insulation processing method - Google Patents
Transformer coil external wire shielding and insulation processing method Download PDFInfo
- Publication number
- CN100583323C CN100583323C CN200710017004A CN200710017004A CN100583323C CN 100583323 C CN100583323 C CN 100583323C CN 200710017004 A CN200710017004 A CN 200710017004A CN 200710017004 A CN200710017004 A CN 200710017004A CN 100583323 C CN100583323 C CN 100583323C
- Authority
- CN
- China
- Prior art keywords
- crimped paper
- wrapping
- insulating
- metallization
- aluminium foil
- 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.)
- Active
Links
- 238000009413 insulation Methods 0.000 title claims description 12
- 238000003672 processing method Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000011888 foil Substances 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000001465 metallisation Methods 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 18
- 239000005030 aluminium foil Substances 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 238000009422 external insulation Methods 0.000 claims description 9
- 238000007596 consolidation process Methods 0.000 claims description 6
- 238000002788 crimping Methods 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010292 electrical insulation Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Landscapes
- Insulating Of Coils (AREA)
Abstract
The invention provides a method for shielding and insulating treatment of a coil lead of a transformer and is characterized in that the method comprises the following steps: (a) packing an aluminum foil shield; (b) wrapping with metallizing creped paper; and (c) wrapping with insulating paper. The invention has the advantages of improved distribution of electric field intensity, shield formation, good shielding and insulating effects, and improved safety and reliability of electrical insulation; and is mainly used in 110-220kV oil-immersed transformers and other transformers as well.
Description
(1) technical field
The present invention relates to transformer, particularly a kind of transformer coil lift one's head the place shielding and insulating treatment method.
(2) background technology
At present, it is not proper that existing transformer coil is lifted one's head with the shielding and the insulating treatment method at pigtail splice place, and insulation effect is undesirable, has potential safety hazard.
(3) summary of the invention
The present invention is in order to remedy the deficiencies in the prior art, the shielding and the insulating treatment method that provide the safe and reliable transformer coil of a kind of insulation effect to lift one's head the place.
The present invention is achieved through the following technical solutions:
Transformer coil of the present invention lift one's head the place shielding and insulating treatment method, its special character is may further comprise the steps:
A. fill foil shielding layer: winding protruding head is removed external insulation layer, the crimping coil connectors, lead-in wire is removed external insulation layer, the crimping pigtail splice reliably connects two joints with bolt, the group of then aluminium foil being pinched into consolidation be wrapped in two joints and bolt around, it is firmly reliable that aluminium foil is contacted with joint, the outside tightly wraps with aluminum foil strip again, and surface smoothing does not have obvious gauffer, and the aluminium foil of filling will and remove on going between on the core overlap joint of external insulation layer with winding protruding head.
B. wrap up metallization crimped paper: the metal covering of the crimped paper that will metallize twines wrapping one deck inwardly outside aluminium foil layer, adopt the wrapping of half lap formula, starting of crimped paper of metallization is positioned at winding protruding head screen place, metal covering is overlapped mutually, the inboard metal covering of metallization crimped paper with fill the aluminium foil and the core of winding protruding head and the core of lead-in wire and will reliably contact, the end head of metallization crimped paper will reliably contact with the core that goes between.
C. wrap up insulating paper: at the outside wrapping of metallization crimped paper crimped paper insulating barrier, to firmly even up wrinkle during wrapping, make the insulation consolidation after the wrapping, insulating layer thickness equals or is slightly larger than the insulation thickness of former lead-in wire, insulating barrier will with the former insulating barrier overlap joint of winding protruding head and lead-in wire on.
The invention has the beneficial effects as follows, improved electric-field intensity distribution, form screen, shielding and insulation effect are good, improve the insulation safety reliability, are mainly used in voltage 110～220kV oil-filled transformer, also are applicable to other transformer.
(4) description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is a structural representation, and Fig. 2 fills for aluminium foil and handles schematic diagram, and Fig. 3 is metallization crimped paper overlap joint schematic diagram.
Among the figure, 1 winding protruding head, 2 lead-in wires, 3 aluminium foils, 4 coil connectors, 5 pigtail splices, 6 bolts, 7 metallization crimped papers, 8 insulating barriers, 9 original insulating barriers, 10 original insulating barriers, A are metal covering, B is an insulating surfaces.
(5) embodiment
Accompanying drawing 1-3 is a kind of specific embodiment of the present invention.
Transformer coil of the present invention lift one's head the place shielding and insulating treatment method may further comprise the steps:
A. fill foil shielding layer: winding protruding head 1 is removed external insulation layer, crimping coil connectors 4, to go between and 2 remove external insulation layer, crimping pigtail splice 5 reliably connects two joints with bolt 6, the group of then aluminium foil 3 of thickness 0.075 being pinched into consolidation be wrapped in two joints and bolt around, it is firmly reliable that aluminium foil is contacted with joint, the outside tightly wraps with aluminum foil strip again, and surface smoothing does not have obvious gauffer, and the aluminium foil of filling will and remove on going between on the core overlap joint of external insulation layer with winding protruding head.
B. wrapping metallization crimped paper: the metal covering A of the crimped paper 7 that will metallize wraps up one deck in 3 layers of outer winding of aluminium foil inwardly, adopt the half lap formula to twine wrapping, starting of crimped paper of metallization is positioned at winding protruding head screen place, metal covering is overlapped mutually, (the metal covering A of two metallization crimped papers is relative with metal covering as shown in Figure 3 for bridging method, metal covering A inwardly, insulating surfaces B outwardly), the inboard metal covering A of metallization crimped paper with fill the aluminium foil and the core of winding protruding head and the core of lead-in wire and will reliably contact, the end head of metallization crimped paper will reliably contact with the core that goes between.
C. wrap up insulating barrier: at the outside wrapping of metallization crimped paper crimped paper insulating barrier 8, initial two-layer insulation is wrapped up with the little crimped paper half lap of 22Hcc, all the other are wrapped up with the crimped paper of wide 40mmd, to firmly even up wrinkle during wrapping, make the insulation consolidation after the wrapping, insulating layer thickness equals or is slightly larger than the insulation thickness of former lead-in wire, and insulating barrier will overlap with original insulating barrier 9,10 of winding protruding head and lead-in wire.
The half lap formula is twined wrapping, and when being the winding of enclosing with bar shaped crimped paper one circle, Hou Yiquan pushes down a half width of last circle.
Claims (1)
1. a transformer coil is lifted one's head the shielding and the insulating treatment method at place, it is characterized in that may further comprise the steps:
A. fill foil shielding layer: winding protruding head (1) is removed external insulation layer, crimping coil connectors (4), to go between (2) remove external insulation layer, crimping pigtail splice (5) reliably connects two joints with bolt (6), the group of then aluminium foil (3) being pinched into consolidation be wrapped in two joints and bolt around, it is firmly reliable that aluminium foil is contacted with joint, the outside tightly wraps with aluminum foil strip again, and surface smoothing does not have obvious gauffer, and the aluminium foil of filling will and remove on going between on the core overlap joint of external insulation layer with winding protruding head.
B. wrap up metallization crimped paper: the metal covering of the crimped paper (7) that will metallize twines wrapping one deck inwardly outside aluminium foil (3) layer, adopt the wrapping of half lap formula, starting of crimped paper of metallization is positioned at winding protruding head screen place, metal covering is overlapped mutually, the inboard metal covering of metallization crimped paper with fill the aluminium foil and the core of winding protruding head and the core of lead-in wire and will reliably contact, the end head of metallization crimped paper will reliably contact with the core of go between (2).
C. wrap up insulating paper: at the outside wrapping of metallization crimped paper (7) crimped paper insulating barrier (8), to firmly even up crimped paper during wrapping, make the insulation consolidation after the wrapping, insulating layer thickness equals or is slightly larger than the insulation thickness of former lead-in wire, insulating barrier will with original insulating barrier (9) (10) overlap joint of winding protruding head and lead-in wire on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710017004A CN100583323C (en) | 2007-08-17 | 2007-08-17 | Transformer coil external wire shielding and insulation processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710017004A CN100583323C (en) | 2007-08-17 | 2007-08-17 | Transformer coil external wire shielding and insulation processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101145438A CN101145438A (en) | 2008-03-19 |
| CN100583323C true CN100583323C (en) | 2010-01-20 |
Family
ID=39207877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710017004A Active CN100583323C (en) | 2007-08-17 | 2007-08-17 | Transformer coil external wire shielding and insulation processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100583323C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901676B (en) * | 2009-05-25 | 2012-09-05 | 上海飞晶电气股份有限公司 | Method for improving insulativity of tapping switch of non-crystaline amorphousmetal transformer |
| CN102543393A (en) * | 2012-02-17 | 2012-07-04 | 山东达驰电气有限公司 | Suspension end insulation structure with transformer coil inserted with shielding wire |
| 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 |
| CN102629513B (en) * | 2012-04-24 | 2015-04-29 | 山东达驰电气有限公司 | Coil outlet end transition connecting device of high-voltage current conversion transformer and manufacture method of coil outlet end transition connecting device |
| CN104916413B (en) * | 2015-06-05 | 2017-10-17 | 卧龙电气集团股份有限公司 | A kind of AT powers 330kV tractive transformer lead capacitive shielding constructions |
| CN105304294B (en) * | 2015-11-16 | 2017-06-13 | 西北核技术研究所 | A kind of Tesla transformers shielding construction |
| CN106531411A (en) * | 2016-10-12 | 2017-03-22 | 武汉泰普变压器开关有限公司 | Electric shielding structure of connected part of tap switch contact of transformer and lead |
| CN116682653B (en) * | 2023-06-12 | 2024-06-28 | 山东泰开变压器有限公司 | High-voltage wire outlet structure of 330kV power transformer |
-
2007
- 2007-08-17 CN CN200710017004A patent/CN100583323C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101145438A (en) | 2008-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100583323C (en) | Transformer coil external wire shielding and insulation processing method | |
| CN105552791B (en) | A kind of preparation method of the core twisted polyethylene cable transition joint of 10KV pyrocondensations three | |
| CN104916413B (en) | A kind of AT powers 330kV tractive transformer lead capacitive shielding constructions | |
| CN102682986A (en) | Production process of high voltage transformer | |
| CN202258734U (en) | Coil insulation structure of amorphous alloy transformer | |
| CN206098110U (en) | Electrical shield structure of voltage regulator of transformer contact and lead wire connection place | |
| CN201069671Y (en) | Single-side self-adhesive aldehyde lacquer coated combined lead | |
| CN201893633U (en) | Connecting structure of induction linear motor primary coils | |
| CN202120735U (en) | High voltage winding terminal wrapping structure | |
| CN205140713U (en) | Coil with around burying formula lead wire | |
| CN102592797B (en) | Coil outlet method for reducing transformer partial discharge | |
| CN202888410U (en) | Crimping joint structure for aluminium enamelled wire and copper wire | |
| CN202282226U (en) | Binding structure for binding connected part between transformer lead and semiconductor by adopting carbon black crepe paper | |
| CN204242783U (en) | A kind of shielding body of high voltage transformer tap lead wire | |
| CN207883504U (en) | A kind of flat device of round wires | |
| CN201927462U (en) | Electric shielding structure for interphase connecting wire or O-point lead wire of transformer winding | |
| CN206649915U (en) | Combined latticed lead | |
| CN201927464U (en) | Welding point electric shielding structure for down-lead of transformer with 110 KV level or over | |
| CN104319727A (en) | Cable connection device and method | |
| CN200944341Y (en) | Multi-conbination parallel wires with protection insulator | |
| CN201540808U (en) | Lead-wire aluminum foil packaging structure for a transformer | |
| CN211265041U (en) | Multilayer insulated wire | |
| CN212968080U (en) | Better cable weld joint of stability | |
| CN210516451U (en) | Transformer electrostatic plate structure | |
| CN201039473Y (en) | Carbon fiber electrical connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20111129 Address after: 274200 Chengwu County, Shandong Province, the eastern suburbs of economic and Technological Development Zone Patentee after: Shandong Dachi Electric Co., Ltd. Address before: 274200 Chengwu economic and Technological Development Zone, Shandong, Heze Patentee before: Dachi Electric Co., Ltd., Shandong |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20200806 Granted publication date: 20100120 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200821 Granted publication date: 20100120 |
|
| PD01 | Discharge of preservation of patent |