CN103594150B - A kind of production method of transformer PET polyester film insulated winding wire - Google Patents
A kind of production method of transformer PET polyester film insulated winding wire Download PDFInfo
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- CN103594150B CN103594150B CN201310574544.4A CN201310574544A CN103594150B CN 103594150 B CN103594150 B CN 103594150B CN 201310574544 A CN201310574544 A CN 201310574544A CN 103594150 B CN103594150 B CN 103594150B
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Abstract
The present invention relates to a kind of production method of transformer PET polyester film insulated winding wire, belong to Transformer Winding lead technology field.Technical scheme is: PET polyester film (2) is coated outer in bare copper flat wire (1), described PET polyester film take PETG as raw material, employing extrusion molding is made, then becomes PET polyester film through biaxial tension, the stress R when plastic elongation rate of bare copper flat wire is 0.2%
p0.2for 240-260Mpa, and resistivity is less than 0.017241 Ω mm
2/ m, percentage elongation is greater than 18%.Insulated winding wire is produced, and keeps barotropic state, is provided with antistatic facility, and internal gas is moistening clean; The present invention prevents PET polyester film from adsorbing micronic dust, ensures PET polyester film high-cleanness, and because transformer coil runs in non-oil immersion environment, clean production environment ensure that electromagnetic wire has good explosion-proof and insulating properties.PET polyester film meet every transformer use in chemistry, physical property requirements and be easy to maintenance test in gas-insulated transformer.
Description
Technical field
The present invention relates to a kind of production method of transformer PET polyester film insulated winding wire, for making Transformer Winding, belonging to Transformer Winding lead technology field.
Background technology
PET polyester film is called for short PET film, is take PETG as raw material, adopts extrusion molding to make sheet, then through thin-film material that biaxial tension is made.In process of production because PET polyester film has adsorptivity, in production process, easy adsorbing contaminant, affects properties of product.The purity requirements of gas transformer to insulation winding is high, and the yield strength of insulation winding is higher, and Short Circuit withstand impact capacity is stronger, and to the research and development of the heat dispersion of polyester film insulation winding and electric property, to manufacture improvement extremely urgent.Because Transformer Winding coil runs in non-oil immersion environment, the winding wire that background technology is produced can not meet the requirement of Transformer Winding.
Summary of the invention
The object of the invention is to provide a kind of production method of transformer PET polyester film insulated winding wire, in subenvironment, barotropic state is kept during production, add antistatic facility, ensure that internal gas is moistening, clean, not contaminated, prevent PET polyester film from adsorbing micronic dust, ensure PET polyester film high-cleanness; Solve Problems existing in background technology.
Technical scheme of the present invention is:
A kind of transformer PET polyester film insulated winding wire, PET polyester film is coated outer in bare copper flat wire, described PET polyester film take PETG as raw material, employing extrusion molding is made, PET polyester film is become again, the stress R when plastic elongation rate of bare copper flat wire is 0.2% through biaxial tension
p0.2for 240-260Mpa, and resistivity is less than 0.017241 Ω mm
2/ m, percentage elongation is greater than 18%.
Described bare copper flat wire, after adopting first extruding, drawing process is made, and has increased substantially the yield strength of conductor.
A production method for transformer PET polyester film insulated winding wire, comprises following processing step: after 1. using first extruding, the method for drawing produces bare copper flat wire, the stress R when plastic elongation rate of bare copper flat wire is 0.2%
p0.2reach 240-260Mpa, and resistivity is less than 0.017241 Ω mm
2/ m, percentage elongation is greater than 18%; 2. be raw material with PETG, adopt extrusion molding to make thicker sheet, thicker sheet is become thinner PET polyester film through biaxial tension; 3. bare copper flat wire and PET polyester film enter confined space, carry out insulated winding wire production, and this confined space keeps barotropic state, and keep non-moving air not circulate, be provided with antistatic facility, internal gas is moistening, clean, not contaminated, and dustfall content is less than 1 μ g/cm
2, relative air humidity 60%-80%; 4. PET polyester film is coated outer in bare copper flat wire, produces transformer PET polyester film insulated winding wire, take-up reel carries out rolling, becomes finished product.
The invention has the beneficial effects as follows: the present invention prevents PET polyester film from adsorbing micronic dust, ensure PET polyester film high-cleanness, because transformer coil runs in non-oil immersion environment, clean production environment ensure that electromagnetic wire has good explosion-proof and insulating properties.PET polyester film meet every transformer use in chemistry, physical property requirements and be easy to maintenance test in gas-insulated transformer.
Accompanying drawing explanation
Fig. 1 is product cross section schematic diagram of the present invention;
In figure: 1, bare copper flat wire; 2, PET polyester film; 3, chamfering.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
A kind of transformer PET polyester film insulated winding wire, PET polyester film 2 is coated outer in bare copper flat wire 1, described PET polyester film take PETG as raw material, employing extrusion molding is made, PET polyester film is become again, the stress R when plastic elongation rate of bare copper flat wire is 0.2% through biaxial tension
p0.2for 240-260Mpa, and resistivity is less than 0.017241 Ω mm
2/ m, percentage elongation is greater than 18%.
Described bare copper flat wire, after adopting first extruding, drawing process is made, and has increased substantially the yield strength of conductor.
Execution mode more specifically:
1) according to transformer PET polyester film insulated winding wire manufacturing requirements, determine the specification of insulated winding wire, after using first extruding, the mode of drawing produces bare copper flat wire; Take PETG as raw material, adopt extrusion molding to make thicker sheet, thicker sheet is become thinner PET polyester film through biaxial tension;
2) bare copper flat wire and PET polyester film enter confined space, carry out insulated winding wire production, and this confined space keeps barotropic state, and be provided with antistatic facility, internal gas is moistening, clean, not contaminated, and dustfall content is less than 1 μ g/cm
2, relative air humidity 60%-80%;
3) production scene is a seal cavity, clean moistening air is full of in confined space, and keep non-moving air not circulate, Special dustproof work clothes must be worn when producers operate, after Airshower chamber, enter seal cavity, do not allow random discrepancy, ensure positive pressure environment and the high cleanliness of production scene; Antistatic erection of equipment in inside, an earth connection, if PET polyester film has small dust or foreign matter all can adsorb by antistatic facility; Thus substantially increase the cleannes of PET polyester film insulation winding, ensure that the performance of winding wire;
4) PET polyester film is coated outer in bare copper flat wire, produces transformer PET polyester film insulated winding wire, take-up reel carries out rolling, becomes finished product.
Claims (1)
1. a transformer production method for PET polyester film insulated winding wire, is characterized in that comprising following processing step: after 1. using first extruding, the method for drawing produces bare copper flat wire, stress R when bare copper flat wire plastic elongation rate is 0.2%
p0.2reach 240-260Mpa, and resistivity is less than 0.017241 Ω mm
2/ m, percentage elongation is greater than 18%; 2. be raw material with PETG, adopt extrusion molding to make thicker sheet, thicker sheet is become thinner PET polyester film through biaxial tension; 3. bare copper flat wire and PET polyester film enter confined space, carry out insulated winding wire production, and this confined space keeps barotropic state, and keep non-moving air not circulate, be provided with antistatic facility, internal gas is moistening, clean, not contaminated, and dustfall content is less than 1 μ g/cm
2, relative air humidity 60%-80%; 4. PET polyester film is coated outer in bare copper flat wire, produces transformer PET polyester film insulated winding wire, take-up reel carries out rolling, becomes finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574544.4A CN103594150B (en) | 2013-11-18 | 2013-11-18 | A kind of production method of transformer PET polyester film insulated winding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574544.4A CN103594150B (en) | 2013-11-18 | 2013-11-18 | A kind of production method of transformer PET polyester film insulated winding wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103594150A CN103594150A (en) | 2014-02-19 |
| CN103594150B true CN103594150B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310574544.4A Active CN103594150B (en) | 2013-11-18 | 2013-11-18 | A kind of production method of transformer PET polyester film insulated winding wire |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692355A (en) * | 2009-06-03 | 2010-04-07 | 无锡锡洲电磁线有限公司 | New paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard conductor |
| CN102915791A (en) * | 2012-11-01 | 2013-02-06 | 无锡统力电工有限公司 | Winding wire for SF6 gas insulated transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003045239A (en) * | 2001-08-03 | 2003-02-14 | Hitachi Cable Ltd | Horizontal coil |
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2013
- 2013-11-18 CN CN201310574544.4A patent/CN103594150B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692355A (en) * | 2009-06-03 | 2010-04-07 | 无锡锡洲电磁线有限公司 | New paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard conductor |
| CN102915791A (en) * | 2012-11-01 | 2013-02-06 | 无锡统力电工有限公司 | Winding wire for SF6 gas insulated transformer |
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| CN103594150A (en) | 2014-02-19 |
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