CN102568780B - Lead wire connection structure for transformer - Google Patents
Lead wire connection structure for transformer Download PDFInfo
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- CN102568780B CN102568780B CN201210015417.6A CN201210015417A CN102568780B CN 102568780 B CN102568780 B CN 102568780B CN 201210015417 A CN201210015417 A CN 201210015417A CN 102568780 B CN102568780 B CN 102568780B
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- lead wire
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Abstract
The invention relates to a transformer accessory, in particular to a lead wire connection structure for a transformer. The lead wire connection structure for the transformer is characterized by comprising a first joint, a second joint and a coil outlet lead wire, wherein a wire nose is welded at the upper end of the coil outlet lead wire; the second joint has a three-way shape; one end of the second joint is welded with a second copper pipe lead wire, and the other two ends of the second joint are connected with the first joint and the wire nose respectively through bolts; the other end of the first joint is welded with a first copper pipe lead wire; crepe paper is filled in non-circular parts or grooves of the connection parts of the components; and the peripheries of the components are sequentially wrapped with aluminum and platinum crepe paper, the crepe paper and a high network band from inside to outside. The lead wire connection structure for the transformer has the advantages of safety, reliability and high practicability, has a great significance for guaranteeing the insulation intensity of the transformer, and is favorable for application to ultrahigh voltage and high capacity power transformers; and weld joints are easy to clean, and partial discharging is reduced.
Description
(1) technical field
The present invention relates to a kind of transformer accessory, particularly a kind of transformer lead syndeton.
(2) background technology
Present stage, the demand of high pressure, EHV transformer grows with each passing day, in the middle of these transformers, put, weaken kelvin effect (under frequency and the certain condition of lead-in wire unit resistance in order to dwindle insulation distance, reduction office, skin effect coefficient C is directly proportional to the thickness t of copper pipe, be inversely proportional to the diameter of copper pipe), temperature rise and effectively utilize raw material reduces to go between, adopt transformer yet corresponding increase of copper pipe as lead-in wire, but copper pipe is not flexible as copper stranded conductor and copper bar in the time connecting.If adopting copper pipe connected mode is in the past need weld with it at device between winding protruding head lead-in wire and joint, also need to adopt between joint two ends and copper pipe lead-in wire and weld, all be inconvenient to operate and weld, clear up welding slag, round and smooth electrode and installation and removal etc., the moisture content that the high temperature producing in the time that device welds with it in addition and cooling apply can work the mischief to other insulation of transformer, is also unfavorable for the raising in transformer insulated intensity and useful life.
(3) summary of the invention
The present invention, in order to make up the deficiencies in the prior art, provides a kind of safe and reliable, practical transformer lead syndeton.
The present invention is achieved through the following technical solutions:
A kind of transformer lead syndeton, it is characterized in that: comprise the first joint, the second joint and winding protruding head lead-in wire, wired nose is welded in winding protruding head lead-in wire upper end, the second joint is three-way connection, the second joint is one end and the second copper pipe wire bonds wherein, another two ends are bolted with the first joint and line nose respectively, the other end of the first joint and the first copper pipe wire bonds, the connecting portion of above-mentioned each parts does not justify or groove is filled with crimped paper, and the periphery of above-mentioned each parts is enclosed with aluminium foil crimped paper, crimped paper and high Netowrk tape from inside to outside successively.
Winding protruding head lead-in wire is cold welding with the welding manner of line nose, between the second joint and the second copper pipe lead-in wire and between the first joint and the first copper pipe lead-in wire, all adopts the brazing mode of phosphor-copper welding rod to weld.
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 the moisture content that applies due to the caused high temperature of welding and technique to transformer entirety or local brought damage, be easy to trimming, to reducing partial discharge, ensure that transformer insulated intensity has very important meaning, be conducive to apply on ultra high voltage, large-capacity power transformer.
(4) brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is further illustrated.
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.
In figure, 1 first joint, 2 second joints, 3 winding protruding head lead-in wires, 4 line noses, 5 second copper pipe lead-in wires, 6 first copper pipe lead-in wires, 7 aluminium foil crimped papers, 8 crimped papers, 9 high Netowrk tapes, 10 bolts, 11 the 3rd joints, 12 the 4th joints.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises the first joint 1, the 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, the second joint 2 is three-way connection, the second joint 2 is one end and 5 welding of the second copper pipe lead-in wire wherein, another two ends are connected by bolt 10 with the first joint 1 and line nose 4 respectively, the other end of the first joint 1 and 6 welding of the 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 foil crimped paper 7 from inside to outside successively, crimped paper 8 and high Netowrk tape 9, winding protruding head lead-in wire 3 is cold welding with the welding manner of line nose 4, between the second joint 2 and the second copper pipe lead-in wire 5 and between the first joint 1 and the first copper pipe lead-in wire 6, all adopt the brazing mode of phosphor-copper welding rod to weld.
By welding with it at device between original winding protruding head lead-in wire 3 and the 3rd joint 11, weld with the first copper pipe lead-in wire 6 and the second copper pipe lead-in wire 5 respectively at the 4th joint 12 two ends, becoming line nose 4 takes the mode of cold welding to be connected with transformer coil tap lead wire 3, between the first joint 1 and the first copper pipe lead-in wire 6, take the brazing mode of phosphor-copper welding rod to weld, the second joint 2 is three-way connection, wherein one end and transformer the second copper pipe lead-in wire 5 take the brazing mode of phosphor-copper welding rod to weld, another two ends are connected by bolt 10 with the first joint 1 and line nose 4 respectively, avoid getting angry with it at transformer.
Copper pipe lead-in wire adopts the soldering of phosphor-copper welding rod, is only permitted overlap welding, and overlap joint area is that weldment is compared with 3～5 times of small end.The breach for phosphor-copper weldering that copper pipe end milling leaves is three (being uniformly distributed along the circumference), do not open four, otherwise phosphor-copper can flow down.Weld copper sleeve and copper pipe are welded with phosphor-copper, wire surface is filled with crimped paper 8 to the space between insulation, outer aluminium foil crimped paper 7 half lap one decks, metal film is inside, keeps contacting with 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 again crimped paper 8 half lap one decks, then wrap to the insulation thickness requiring with crimped paper 8, finally wrap again high Netowrk tape 9 half lap one decks.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 with it transformer Welding Problems, be convenient to postwelding cleaning welding slag, round and smooth electrode, can stop in the time that device welds the harm to other insulation of transformer due to produced high temperature and the moisture content that applies with it simultaneously, and also very convenient in the time of assembling, dismounting.Be mainly used in being connected between 110kV level and above power transformer copper pipe lead-in wire and between copper pipe lead-in wire and coil outlet or copper stranded conductor.
Claims (2)
1. a transformer lead syndeton, it is characterized in that: comprise the first joint (1), the second joint (2) and winding protruding head lead-in wire (3), wired nose (4) is welded in winding protruding head lead-in wire (3) upper end, the second joint (2) is three-way connection, the second joint (2) is one end and the second copper pipe lead-in wire (5) welding wherein, another two ends are connected by bolt (10) with the first joint (1) and line nose (4) respectively, the other end of the first joint (1) and the 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), the periphery of above-mentioned each parts is enclosed with aluminium foil crimped paper (7) from inside to outside successively, crimped paper (8) and high Netowrk tape (9).
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), between the second joint (2) and the second copper pipe lead-in wire (5) and between the first joint (1) and the first copper pipe lead-in wire (6), all adopt the brazing mode of phosphor-copper welding rod to weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015417.6A CN102568780B (en) | 2012-01-18 | 2012-01-18 | Lead wire connection structure for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015417.6A CN102568780B (en) | 2012-01-18 | 2012-01-18 | Lead wire connection structure for transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102568780A CN102568780A (en) | 2012-07-11 |
| CN102568780B true CN102568780B (en) | 2014-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210015417.6A Active CN102568780B (en) | 2012-01-18 | 2012-01-18 | Lead wire connection structure for transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102568780B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481845A (en) * | 2017-06-23 | 2017-12-15 | 安徽皖宏电气设备有限公司 | A kind of high-voltage lead of transformer welding method |
| CN107768098A (en) * | 2017-11-03 | 2018-03-06 | 天威保变(合肥)变压器有限公司 | A kind of novel traction high-voltage lead of transformer attachment structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408575A (en) * | 2008-11-17 | 2009-04-15 | 安徽省电力公司淮北供电公司 | Tool special for T head cable test |
| CN202076104U (en) * | 2010-12-09 | 2011-12-14 | 浙江江山变压器有限公司 | Electric shielding structure of tapped wire-leading T-shaped welded head of transformer |
| CN202454405U (en) * | 2012-01-18 | 2012-09-26 | 山东达驰电气有限公司 | Transformer lead connecting structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07220943A (en) * | 1994-02-01 | 1995-08-18 | Toshiba Corp | High voltage lead connection device |
-
2012
- 2012-01-18 CN CN201210015417.6A patent/CN102568780B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408575A (en) * | 2008-11-17 | 2009-04-15 | 安徽省电力公司淮北供电公司 | Tool special for T head cable test |
| CN202076104U (en) * | 2010-12-09 | 2011-12-14 | 浙江江山变压器有限公司 | Electric shielding structure of tapped wire-leading T-shaped welded head of transformer |
| CN202454405U (en) * | 2012-01-18 | 2012-09-26 | 山东达驰电气有限公司 | Transformer lead connecting structure |
Non-Patent Citations (1)
| Title |
|---|
| JP平7-220943A 1995.08.18 |
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| Publication number | Publication date |
|---|---|
| CN102568780A (en) | 2012-07-11 |
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Effective date of registration: 20200806 Granted publication date: 20140730 |
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Date of cancellation: 20200821 Granted publication date: 20140730 |