CN101527183A - Paper-insulating combined copper-silver alloy conducting wire - Google Patents
Paper-insulating combined copper-silver alloy conducting wire Download PDFInfo
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- CN101527183A CN101527183A CN200910030425A CN200910030425A CN101527183A CN 101527183 A CN101527183 A CN 101527183A CN 200910030425 A CN200910030425 A CN 200910030425A CN 200910030425 A CN200910030425 A CN 200910030425A CN 101527183 A CN101527183 A CN 101527183A
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- paper
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- silver alloy
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- insulating
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Abstract
The invention relates to a paper-insulating combined copper-silver alloy conducting wire which has good heat and electricity conductivity, can improve the heat radiation of a wire coil and achieves the aim of improving the working temperature of the wire coil. The wire coil formed by winding a paper-wrapped copper-silver alloy sheet wire can be adapted to a transformer with higher temperature rise. The transformer is allowed to perform long-time overload operation at a temperature of 80 DEG C to 150 DEG C, and the mechanical performance is not lowered. The conducting wire comprises a paper-wrapped sheet wire which is wrapped by a piece of insulating paper outside; the paper-wrapped sheet wire comprises a metal conductor which is wrapped by a piece of insulating paper outside; and the metal conductor is a copper-silver alloy conductor.
Description
(1) technical field
The present invention relates to power transformer paper covered wire technical field, be specially paper-insulating combined copper-silver alloy conducting wire.
(2) background technology
The paper insulation copper conductor that present power transformer is used, yield strength σ 0.2 〉=120N/mm
2, the highest 260N/mm that is no more than
2Under the power transformer normal operation, the ambient temperature of transformer is approximately 98 ℃～105 ℃, China's high pressure and the EHV transformer main cause that is damaged is that winding deformation causes short circuit, and the main cause of winding deformation is through behind the long-play, the intensity of coil can not satisfy the design and operation requirement, causes coil can't bear short-circuit impact power when running into short circuit, and causes the coil gross distortion.In addition, carry out seeing Fig. 2 when wrapped that its outermost layer 3 and innermost layer 4 adopt overlapping wrapped, all the other intermediate layers 5 to adopt the wrapped forms in gaps with the paper bag copper strap wire, complex structure, the Transformer Winding space availability ratio is low, and volume of transformer is big.
(3) summary of the invention
At the problems referred to above, the invention provides paper-insulating combined copper-silver alloy conducting wire, it has good electric property and mechanical performance, and its yield strength does not have obvious variation after long-time hot operation, has guaranteed the fail safe of long term high temperature operation.
Paper-insulating combined copper-silver alloy conducting wire, its technical scheme is such: it comprises flat wire with paper wrapped, and described flat wire with paper wrapped external packets is covered with insulating paper, and described flat wire with paper wrapped comprises metallic conductor, described metallic conductor is coated with insulating paper, it is characterized in that: described metallic conductor is the Kufil conductor.
It is further characterized in that: in the described Kufil conductor, silver content is 0.8～2 ‰; Described flat wire with paper wrapped quantity is no less than two.
Paper-insulating combined copper-silver alloy conducting wire of the present invention, it adopts Kufil to replace oxygen-free copper conductor in the past, the yield strength R of Kufil conductor
P0.2〉=300N/mm
2Has the favorable conductive thermal conductivity, can improve the radiating effect of coil, reach the purpose that improves the coil working temperature, adopt the coil of paper-wrapped copper-silver alloy sheet wire coiling of the present invention can be applicable to the transformer of temperature rise, allow transformer 80 ℃～150 ℃ long-time overload operations of high temperature, and mechanical performance does not descend.
(4) description of drawings
Fig. 1 is a paper-insulating combined copper-silver alloy conducting wire structural representation of the present invention;
Fig. 2 is the wrapped structure of paper insulation copper conductor in the past;
Fig. 3 is the wrapped structure of paper-insulating combined copper-silver alloy conducting wire of the present invention.
(5) embodiment
See Fig. 1, it comprises flat wire with paper wrapped the present invention, the flat wire with paper wrapped external packets is covered with insulating paper 2, flat wire with paper wrapped comprises metallic conductor 1, metallic conductor 1 is coated with insulating paper 2, wherein metallic conductor 1 is the Kufil conductor, and silver content is 0.8～2 ‰ in the Kufil conductor, and the quantity of flat wire with paper wrapped is no less than two.
Paper-wrapped copper-silver alloy sheet wire of the present invention, its conductor adopts Kufil to make, and adopts up-drawing method continuous casting--continuous extruding technology production, has improved the plasticity of metal, eliminate casting flaw, crystallization again takes place, change the metal structure structure, the inner crystal grain of refinement, ampacity and current density have been improved, thereby improve the electric property and the mechanical performance of metal, and dwindled the cross section, reduced overall dimension; 20 ℃ of resistivity of Kufil conductor≤0.016903～0.017540 Ω mm
2/ m; Yield strength R
P0.2〉=300N/mm
2, and not having significant change 80 ℃～150 ℃ long-play yield strengths, its recrystallization temperature and hot mastication temperature height have the favorable conductive heat conductivility, can improve the radiating effect of coil.
The wrapped structure of paper-insulating combined copper-silver alloy conducting wire of the present invention once is described below: when using paper-wrapped copper-silver alloy sheet wire of the present invention wrapped, the two-layer employing self-locking of its outermost is wrapped, and all the other each layers adopt opposite joint wrapped, see Fig. 3.Adopt this wrapped structure, its structure is compact more, has improved the Transformer Winding space availability ratio, reduces volume of transformer.
Claims (3)
1, paper-insulating combined copper-silver alloy conducting wire, it comprises flat wire with paper wrapped, and described flat wire with paper wrapped external packets is covered with insulating paper, and described flat wire with paper wrapped comprises metallic conductor, described metallic conductor is coated with insulating paper, it is characterized in that: described metallic conductor is the Kufil conductor.
2, paper-insulating combined copper-silver alloy conducting wire according to claim 1 is characterized in that: in the described Kufil conductor, silver content is 0.8～2 ‰.
3, paper-insulating combined copper-silver alloy conducting wire according to claim 1 and 2 is characterized in that: described flat wire with paper wrapped quantity is no less than two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910030425A CN101527183A (en) | 2009-04-10 | 2009-04-10 | Paper-insulating combined copper-silver alloy conducting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910030425A CN101527183A (en) | 2009-04-10 | 2009-04-10 | Paper-insulating combined copper-silver alloy conducting wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101527183A true CN101527183A (en) | 2009-09-09 |
Family
ID=41095009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910030425A Pending CN101527183A (en) | 2009-04-10 | 2009-04-10 | Paper-insulating combined copper-silver alloy conducting wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101527183A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702346B (en) * | 2009-12-01 | 2011-05-04 | 江苏精达里亚阿尔岗琴工程线有限公司 | Method for humidifying insulation paper |
| CN106205870A (en) * | 2016-08-11 | 2016-12-07 | 泰兴市圣达铜业有限公司 | A kind of processing technique of high argentiferous copper cash |
-
2009
- 2009-04-10 CN CN200910030425A patent/CN101527183A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702346B (en) * | 2009-12-01 | 2011-05-04 | 江苏精达里亚阿尔岗琴工程线有限公司 | Method for humidifying insulation paper |
| CN106205870A (en) * | 2016-08-11 | 2016-12-07 | 泰兴市圣达铜业有限公司 | A kind of processing technique of high argentiferous copper cash |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090909 |