CN202454405U - Transformer lead connecting structure - Google Patents
Transformer lead connecting structure Download PDFInfo
- Publication number
- CN202454405U CN202454405U CN2012200229623U CN201220022962U CN202454405U CN 202454405 U CN202454405 U CN 202454405U CN 2012200229623 U CN2012200229623 U CN 2012200229623U CN 201220022962 U CN201220022962 U CN 201220022962U CN 202454405 U CN202454405 U CN 202454405U
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- CN
- China
- Prior art keywords
- joint
- lead
- wire
- transformer
- copper pipe
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a transformer accessory and particularly discloses a transformer lead connecting structure. The transformer lead connecting structure is characterized by comprising a first joint, a second joint and a coil outlet lead, wherein a wire nose is welded at the upper end of the coil outlet lead; the second joint is in a tee joint shape; one end of the second joint is welded with a second copper pipe lead, and the other two ends of the second joint are respectively connected with the first joint and the wire nose through bolts; the other end of the first joint is welded with a first copper pipe lead; crinkled paper is filled in the out-of-round or groove parts of connecting parts between the parts; and aluminum-foil crinkled paper, crinkled paper and high network strips are coated at the peripheries of the parts from interior to exterior in sequence. The transformer lead connecting structure has the advantages of being safe and reliable, being strong in practicality, allowing welding seams to be cleaned easily, having great significance on reducing partial discharge and guaranteeing the insulating strength of a transformer, and being applicable to extra-high-voltage high-capacity power transformers.
Description
Technical field
The present invention relates to a kind of transformer accessory, particularly a kind of transformer lead syndeton.
Background technology
Present stage; The demand of high pressure, EHV transformer grows with each passing day; Putting, weakening kelvin effect (under frequency and the certain condition of lead-in wire unit resistance in order to dwindle insulation distance, reduction office in the middle of these transformers; Skin effect coefficient C is directly proportional with the thickness t of copper pipe; Be inversely proportional to the diameter of copper pipe), the temperature rise and effectively utilize raw material of reducing to go between, adopt transformer yet corresponding increase of copper pipe, but copper pipe is not flexible as copper stranded conductor and copper bar when connecting as lead-in wire.If adopt in the past copper pipe connected mode be need weld on one's body between winding protruding head lead-in wire and the joint at device, the joint two ends also need adopt welding between going between with copper pipe; All be inconvenient to operate and weld, clear up welding slag, slick and sly electrode and installation and removal etc.; High temperature that when device welds on one's body, is produced in addition and the moisture content that cooling applied can work the mischief to other insulation of transformer, also are unfavorable for the raising in transformer insulated intensity and useful life.
Summary of the invention
The present invention provides a kind of safe and reliable, practical transformer lead syndeton in order to remedy the deficiency of prior art.
The present invention realizes through following technical scheme:
A kind of transformer lead syndeton; It is characterized in that: comprise first joint, second joint and winding protruding head lead-in wire; The wired nose of winding protruding head lead-in wire upper end welding, second joint is a three-way shape, second joint is an end and the second copper pipe wire bonds wherein; Two ends are connected through bolt with the line nose with first joint respectively in addition; The other end of first joint and the first copper pipe wire bonds, the connecting portion of above-mentioned each parts are not justified or groove is filled with crimped paper, and the periphery of above-mentioned each parts is enclosed with aluminium platinum crimped paper, crimped paper and high Netowrk tape from inside to outside successively.
The winding protruding head lead-in wire is cold welding with the welding manner of line nose, all adopts the brazing mode of phosphor-copper welding rod to weld between second joint and second copper pipe lead-in wire and between first joint and first copper pipe lead-in wire.
The beneficial effect of transformer lead syndeton of the present invention is: simple in structure; Can on operating desk, operate, easy to operate, safe and reliable; Practical; Can avoid transformer lead when welding welding slag fall into the possibility of device body and because the caused high temperature of welding and moisture content whole or local damage that brings to transformer that technology applied are easy to trimming, to reducing partial discharge; Guarantee that transformer insulated intensity has very important meaning, help on ultra high voltage, large-capacity power transformer, using.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is the cutaway view of traditional transformer lead syndeton;
Fig. 2 is the cutaway view of transformer lead syndeton of the present invention.
Among the figure, 1 first joint, 2 second joints, 3 winding protruding heads lead-in wire, 4 line noses, 5 second copper pipes lead-in wire, 6 first copper pipes lead-in wire, 7 aluminium platinum crimped papers, 8 crimped papers, 9 high Netowrk tapes, 10 bolts, 11 the 3rd joints, 12 the 4th joints.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises first joint 1, second joint 2 and winding protruding head lead-in wire 3; Wired nose 4 is welded in winding protruding head 3 upper ends that go between; Second joint 2 is a three-way shape; Second joint 2 is an end and 5 welding of second copper pipe lead-in wire wherein, and two ends are connected through bolt 10 with line nose 4 with first joint 1 respectively in addition, the other end of first joint 1 and 6 welding of first copper pipe lead-in wire; The connecting portion of above-mentioned each parts does not justify or groove is filled with crimped paper 8; The periphery of above-mentioned each parts is enclosed with aluminium platinum crimped paper 7, crimped paper 8 and high Netowrk tape 9 from inside to outside successively, and winding protruding head lead-in wire 3 is cold welding with the welding manner of line nose 4, all adopts the brazing mode of phosphor-copper welding rod to weld between second joint 2 and second copper pipe lead-in wire 5 and between first joint 1 and first copper pipe lead-in wire 6.
By need weld on one's body between original winding protruding head lead-in wire the 3 and the 3rd joint 11 at device, the 4th joint 12 two ends weld with first copper pipe lead-in wire, 6 and second copper pipe lead-in wire 5 respectively; Becoming line nose 4 and transformer coil lifts one's head lead-in wire 3 and takes the mode of cold welding to be connected; Take the brazing mode of phosphor-copper welding rod to weld between first joint 1 and first copper pipe lead-in wire 6; Second joint 2 is a three-way shape; Wherein an end and transformer second copper pipe lead-in wire 5 takes the brazing mode of phosphor-copper welding rod to weld, and two ends are connected through bolt 10 with line nose 4 with first joint 1 respectively in addition, have avoided getting angry on one's body at transformer.
The copper pipe lead-in wire adopts the soldering of phosphor-copper welding rod, is only permitted overlap welding, and the overlap joint area is weldment 3～5 times than small end.The breach that is used for the phosphor-copper weldering that mill out the copper pipe end is three (being uniformly distributed along the circumference), do not open four, otherwise phosphor-copper can flow down.With the phosphor-copper weldering copper sleeve and copper pipe are welded, wire surface is filled outsourcing aluminium foil crimped paper 7 half lap one decks to the space between the insulation with crimped paper 8; Metal film is inside, keeps contacting with the lead-in wire good electrical, and the lap of splice is not less than 30mm; Aluminium foil crimped paper 7 does not allow splicing; Wrap crimped paper 8 half lap one decks again, wrap to the insulation thickness that requires with crimped paper 8 again, wrap high Netowrk tape 9 half lap one decks at last again.High Netowrk tape 9 is that Dandong letter para-electric device Manufacturing Co., Ltd or Baoding Tianwei Electric Power Wire Co., Ltd produce.
When transformer lead syndeton of the present invention can be avoided adopting copper pipe as transformer lead on one's body transformer Welding Problems; Be convenient to postwelding cleaning welding slag, slick and sly electrode; Can stop simultaneously when device welds on one's body since high temperature that is produced and the moisture content that applies to the harm of other insulation of transformer, and also very convenient when assembling, dismounting.Be mainly used between 110kV level and the above power transformer copper pipe lead-in wire and copper pipe lead-in wire and coil outlet or copper stranded conductor between be connected.
Claims (2)
1. transformer lead syndeton; It is characterized in that: comprise first joint (1), second joint (2) and winding protruding head lead-in wire (3); Winding protruding head lead-in wire (3) upper end welding wired nose (4); Second joint (2) is a three-way shape; Second joint (2) is an end and second copper pipe lead-in wire (5) welding wherein, and two ends are connected through bolt (10) with line nose (4) with first joint (1) respectively in addition, the other end of first joint (1) and first copper pipe lead-in wire (6) welding; The connecting portion of above-mentioned each parts does not justify or groove is filled with crimped paper (8), and the periphery of above-mentioned each parts is enclosed with aluminium platinum crimped paper (7), crimped paper (8) and high Netowrk tape (9) from inside to outside successively.
2. transformer lead syndeton according to claim 1; It is characterized in that: winding protruding head lead-in wire (3) is cold welding with the welding manner of line nose (4), all adopts the brazing mode of phosphor-copper welding rod to weld between second joint (2) and second copper pipe lead-in wire (5) and between first joint (1) and first copper pipe lead-in wire (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200229623U CN202454405U (en) | 2012-01-18 | 2012-01-18 | Transformer lead connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200229623U CN202454405U (en) | 2012-01-18 | 2012-01-18 | Transformer lead connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202454405U true CN202454405U (en) | 2012-09-26 |
Family
ID=46870247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200229623U Withdrawn - After Issue CN202454405U (en) | 2012-01-18 | 2012-01-18 | Transformer lead connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202454405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568780A (en) * | 2012-01-18 | 2012-07-11 | 山东达驰电气有限公司 | Lead wire connection structure for transformer |
| CN107359433A (en) * | 2017-07-03 | 2017-11-17 | 卧龙电气集团股份有限公司 | A kind of three-way connection and its application method suitable for high-power transformer lead connection |
-
2012
- 2012-01-18 CN CN2012200229623U patent/CN202454405U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568780A (en) * | 2012-01-18 | 2012-07-11 | 山东达驰电气有限公司 | Lead wire connection structure for transformer |
| CN102568780B (en) * | 2012-01-18 | 2014-07-30 | 山东达驰电气有限公司 | Lead wire connection structure for transformer |
| CN107359433A (en) * | 2017-07-03 | 2017-11-17 | 卧龙电气集团股份有限公司 | A kind of three-way connection and its application method suitable for high-power transformer lead connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120926 Effective date of abandoning: 20140730 |
|
| RGAV | Abandon patent right to avoid regrant |