CN104240804B - A kind of transformator heat resistance self-adhesive transposed conductor and preparation method thereof - Google Patents
A kind of transformator heat resistance self-adhesive transposed conductor and preparation method thereof Download PDFInfo
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- CN104240804B CN104240804B CN201410523497.5A CN201410523497A CN104240804B CN 104240804 B CN104240804 B CN 104240804B CN 201410523497 A CN201410523497 A CN 201410523497A CN 104240804 B CN104240804 B CN 104240804B
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Abstract
The invention discloses a kind of transformator heat resistance self-adhesive transposed conductor and preparation method thereof, the heat resistance self-adhesive enameled sheet wire that two col width faces contact with each other it is provided with in external insulation layer, make the same transposition turned to along leptoprosopy above and below at two row heat resistance self-adhesive enameled sheet wires, between two row heat resistance self-adhesive enameled sheet wires, be provided with middle liner paper；Described heat resistance self-adhesive enameled sheet wire includes that cross section is rectangle conductor with rounded corners, is externally coated with primer film at conductor, is externally coated with top-coat paint film at primer film；On the cross section of enameled sheet wire, the broadside of primer film is circular arc indent, and the outline of top-coat paint film is rectangle with rounded corners.The heat resistance self-adhesive transposed conductor that the present invention provides can be effectively improved Transformer Winding mechanical strength at high temperature, improves its anti-short circuit capability, extends its service life.
Description
Technical field
The invention discloses a kind of transformator heat resistance self-adhesive transposed conductor, the invention also discloses a kind of change
The depressor preparation method of heat resistance self-adhesive transposed conductor, the heat resistance self-adhesive being particularly used for transformator changes
Position wire.
Background technology
At present, along with the constantly increase of transformer capacity and the requirement to system stability improve constantly,
The anti-short circuit capability of transformer equipment is had higher requirement, uses self-adhering transposed conductor effectively to expire
This performance requirement of foot transformator.So-called self-adhering transposed conductor, is i.e. to be coated with on single enameled sheet wire surface
Make suitable tack coat, when coil is after Constant pressure drying, can firmly glue between each self-adhesion enameled sheet wire
Knot together, forms a rigid body entirety, thus is greatly enhanced the anti-bending strength of coil, tensile strength etc.
Mechanical performance, and then the anti-short circuit capability of intensifier coil.
At normal temperatures, the mechanical strength of common self-adhering transposed conductor can reach 4 times of non-self-adhering transposed conductor
Above, but when common self-adhering transposed conductor is 100 DEG C of long-term works, under its adhesion strength starts to occur
Fall trend, when 120 DEG C of long-term works, its adhesion strength is almost suitable with non-self-adhering transposed conductor.?
Under specific environment, the operating temperature of Winding in Power Transformer may be in more than 100 DEG C for a long time, very
120 DEG C are reached, at this moment, owing to the adhesion strength of common self-adhering transposed conductor weakens to local so that its
Mechanical strength reduces, and under the effect of short-circuit impact, Transformer Winding may produce the machineries such as torsional deformation
Damage, affects safety and service life that transformator runs.
Summary of the invention
An object of the present invention is to overcome the deficiencies in the prior art, it is provided that a kind of have higher
Anti-vibration and anti-short circuit capability, be greatly improved flexural rigidity and improve the transformator of mechanical strength with heat-resisting from
Viscous transposed conductor.
It is a further object of the present invention to provide the preparation method of a kind of transformator heat resistance self-adhesive transposed conductor.
The technical scheme provided according to the present invention, described transformator heat resistance self-adhesive transposed conductor, the most absolutely
The heat resistance self-adhesive enameled sheet wire that two col width faces contact with each other it is provided with in edge layer, flat at two row heat resistance self-adhesive enamel-covers
Line make the same transposition turned to along leptoprosopy above and below, set between two row heat resistance self-adhesive enameled sheet wires
There is middle liner paper；Described heat resistance self-adhesive enameled sheet wire includes that cross section is rectangle conductor with rounded corners,
Conductor be externally coated with primer film, be externally coated with top-coat paint film at primer film；Horizontal stroke at enameled sheet wire
On cross section, the broadside of primer film is circular arc indent, and the outline of top-coat paint film is rectangle with rounded corners.
On the cross section of enameled sheet wire, when conductor width is less than or equal to 5mm, primer film
Indent amount is 0.005mm.
On the cross section of enameled sheet wire, when conductor width is more than 5.00mm and less than or equal to 10.00
During mm, the indent amount of primer film is 0.010mm.
On the cross section of enameled sheet wire, when conductor width more than 10.00mm and is less than or equal to
During 15.00mm, the indent amount of primer film is 0.015mm.
The thickness of described primer film is 0.08mm～0.12mm, and the material of primer film is acetal paint.
The thickness of described top-coat paint film is 0.03mm～0.05mm, and the material of top-coat paint film is heat resistance self-adhesive
Paint.
The preparation method of a kind of transformator heat resistance self-adhesive transposed conductor comprises the following steps:
A, to take the cross section produced be the rectangle conductor with fillet, utilizes the fixing japanning of spill
Mould, at the surface-coated priming paint of conductor, enters vertical enamel-cover roasting oven and carries out baking-curing, and vertical enamel-cover dries
The inlet temperature of stove controls at 120 DEG C～220 DEG C, and lower floor's temperature controls at 220 DEG C～310 DEG C, middle level
Temperature controls at 300 DEG C～420 DEG C, and upper strata temperature controls at 380 DEG C～450 DEG C, and the speed of service controls
At 10m/min～13m/min, solidifying priming paint forms primer film, obtains heat resistance self-adhesive enameled sheet wire semi-finished product；
B, Half japanning die is utilized uniformly to coat finish paint in heat resistance self-adhesive enameled sheet wire surface of semi-finished,
Enter vertical enamel-cover roasting oven and carry out baking-curing, the inlet temperature of vertical enamel-cover roasting oven control at 160 DEG C～
180 DEG C, lower floor's temperature controls at 300 DEG C～340 DEG C, and middle level temperature controls at 350 DEG C～390 DEG C,
Upper strata temperature controls at 400 DEG C～450 DEG C, and the speed of service controls at 7m/min～13m/min, finish paint
It solidify to form top-coat paint film, obtain heat resistance self-adhesive enameled sheet wire；
C, heat resistance self-adhesive enameled sheet wire are coated with external insulation layer after transposition bunchy outside it, and through traction
Coil on equipment around forming heat resistance self-adhesive transposed conductor.
Use the heat resistance self-adhesive enameled sheet wire that preparation method of the present invention is made, at room temperature (25 DEG C) and high temperature
Shi Jun shows high single line adhesion strength, its single line adhesion strength when room temperature more than 12N/mm2,
More than 6N/mm when 120 DEG C2.Compared with common self-adhesion enameled sheet wire, heat resistance self-adhesive enameled sheet wire is at 120 DEG C
Time single line adhesion strength improve more than 8 times.Use the heat resistance self-adhesive transposition that above-mentioned production technology is made
Wire, also shows the highest integrally bending rigidity when room temperature and high temperature.After flexural rigidity is tested,
The heat resistance self-adhesive transposed conductor solidification coefficient when room temperature can reach more than 12, the solidification system when 105 DEG C
Number can reach more than 6, and the solidification coefficient when 120 DEG C can reach more than 3.It is heat-resisting that the present invention provides
Self-adhering transposed conductor can be effectively improved Transformer Winding mechanical strength at high temperature, improves its resistance to shorting energy
Power, extends its service life.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of the present invention.
Fig. 2 is the cross sectional representation of the single heat resistance self-adhesive enameled sheet wire in the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
This transformator heat resistance self-adhesive transposed conductor, the two col width faces that are provided with in external insulation layer 1 contact with each other
Heat resistance self-adhesive heat resistance self-adhesive enameled sheet wire 2, on two row heat resistance self-adhesive heat resistance self-adhesive enameled sheet wires
Make the same transposition turned to following along leptoprosopy, set between two row heat resistance self-adhesive heat resistance self-adhesive enameled sheet wires
There is middle liner paper 3.Described heat resistance self-adhesive heat resistance self-adhesive enameled sheet wire 2 includes that cross section is length with rounded corners
Square conductor 2.1, is externally coated with primer film 2.2 at conductor 2.1, in the outside painting of primer film 2.2
It is covered with top-coat paint film 2.3；On the cross section of heat resistance self-adhesive enameled sheet wire 2, the broadside of primer film 2.2 is circle
Arc concave shape, the outline of top-coat paint film 2.3 is rectangle with rounded corners.
On the cross section of heat resistance self-adhesive enameled sheet wire 2, when conductor 2.1 width is less than or equal to 5mm
Time, the indent amount of primer film 2.2 is 0.005mm.
On the cross section of heat resistance self-adhesive enameled sheet wire 2, when conductor 2.1 width is more than 5.00mm and little
In or equal to 10.00mm time, the indent amount of primer film 2.2 is 0.010mm.
On the cross section of heat resistance self-adhesive enameled sheet wire 2, when conductor 2.1 width is more than 10.00mm and little
In or equal to 15.00mm time, the indent amount of primer film 2.2 is 0.015mm.
The thickness of described primer film 2.2 is 0.08mm～0.12mm, and the material of primer film 2.2 is contracting
Aldehyde paint.
The thickness of described top-coat paint film 2.3 is 0.03mm～0.05mm, and the material of top-coat paint film 2.3 is resistance to
Hot self-adhesion paint.
Embodiment 1
The preparation method of the present invention a kind of transformator heat resistance self-adhesive transposed conductor comprises the following steps:
A, take the cross section produced be rectangle conductor specification 1.40mm with fillet ×
6.07mm, utilizes the fixing japanning die surface-coated priming paint at conductor of spill, enters vertical enamel-cover and dries
Stove carries out baking-curing, and the inlet temperature of vertical enamel-cover roasting oven controls at 130 DEG C～135 DEG C, lower floor's temperature
Controlling at 235 DEG C～240 DEG C, middle level temperature controls at 350 DEG C～370 DEG C, and upper strata temperature controls at 390 DEG C
～400 DEG C, the speed of service controls at 10m/min, and it is 0.09mm primer film that solidifying priming paint forms thickness,
The indent amount of primer film is 0.010mm, obtains heat resistance self-adhesive enameled sheet wire semi-finished product；
B, Half japanning die is utilized uniformly to coat finish paint in heat resistance self-adhesive enameled sheet wire surface of semi-finished,
Entering vertical enamel-cover roasting oven and carry out baking-curing, the inlet temperature of vertical enamel-cover roasting oven controls at 165 DEG C
～170 DEG C, lower floor's temperature controls at 310 DEG C～320 DEG C, and middle level temperature controls at 355 DEG C～365 DEG C, on
Layer temperature controls at 410 DEG C～420 DEG C, and the speed of service controls at 10m/min, and topcoating cures forms thickness
For the top-coat paint film of 0.04mm, obtain heat resistance self-adhesive enameled sheet wire；
C, 25 heat resistance self-adhesive enameled sheet wire specification 1.40mm × 6.07mm, at it after transposition bunchy
Outside cladding external insulation layer, and coil on pulling equipment around forming heat resistance self-adhesive transposed conductor.
The single line adhesion strength of the heat resistance self-adhesive heat resistance self-adhesive enameled sheet wire that embodiment 1 obtains is shown in Table 1.
The integrally bending rigidity of the heat resistance self-adhesive transposed conductor that embodiment 1 obtains is shown in Table 2.
Table 1
Table 2
Embodiment 2
The preparation method of the present invention a kind of transformator heat resistance self-adhesive transposed conductor comprises the following steps:
A, take the cross section produced be rectangle conductor specification 1.22mm with fillet ×
5.04mm, utilizes the fixing japanning die surface-coated priming paint at conductor of spill, enters vertical enamel-cover and dries
Stove carries out baking-curing, and the inlet temperature of vertical enamel-cover roasting oven controls at 120 DEG C～125 DEG C, lower floor's temperature
Controlling at 220 DEG C～230 DEG C, middle level temperature controls at 300 DEG C～310 DEG C, and upper strata temperature controls at 380 DEG C
～390 DEG C, the speed of service controls at 10.5m/min, and it is the primer film of 0.08mm that solidifying priming paint forms thickness,
The indent amount of primer film is 0.010mm, obtains heat resistance self-adhesive enameled sheet wire semi-finished product；
B, Half japanning die is utilized uniformly to coat finish paint in heat resistance self-adhesive enameled sheet wire surface of semi-finished,
Entering vertical enamel-cover roasting oven and carry out baking-curing, the inlet temperature of vertical enamel-cover roasting oven controls at 160 DEG C
～165 DEG C, lower floor's temperature controls at 300 DEG C～310 DEG C, and middle level temperature controls at 350 DEG C～360 DEG C, on
Layer temperature controls at 400 DEG C～410 DEG C, and the speed of service controls at 10.8m/min, and topcoating cures forms thickness
For the top-coat paint film of 0.03mm, obtain heat resistance self-adhesive enameled sheet wire；
C, 27 heat resistance self-adhesive enameled sheet wire specification 1.22mm × 5.04mm, at it after transposition bunchy
Outside cladding external insulation layer, and coil on pulling equipment around forming heat resistance self-adhesive transposed conductor.
The single line adhesion strength of the heat resistance self-adhesive heat resistance self-adhesive enameled sheet wire that embodiment 2 obtains is shown in Table 3.
The integrally bending rigidity of the heat resistance self-adhesive transposed conductor that embodiment 2 obtains is shown in Table 4.
Table 3
Table 4
Embodiment 3
The preparation method of the present invention a kind of transformator heat resistance self-adhesive transposed conductor comprises the following steps:
A, take the cross section produced be rectangle conductor specification 2.67mm with fillet ×
12.02mm, utilizes the fixing japanning die surface-coated priming paint at conductor of spill, enters vertical enamel-cover
Baker carries out baking-curing, and the inlet temperature of vertical enamel-cover roasting oven controls at 215 DEG C～220 DEG C, lower floor's temperature
Degree controls at 305 DEG C～310 DEG C, and middle level temperature controls at 410 DEG C～420 DEG C, and upper strata temperature controls at 440 DEG C
～450 DEG C, the speed of service controls at 13m/min, and it is 0.012mm primer film that solidifying priming paint forms thickness,
The indent amount of primer film is 0.015mm, obtains heat resistance self-adhesive enameled sheet wire semi-finished product；
B, Half japanning die is utilized uniformly to coat finish paint in heat resistance self-adhesive enameled sheet wire surface of semi-finished,
Entering vertical enamel-cover roasting oven and carry out baking-curing, the inlet temperature of vertical enamel-cover roasting oven controls at 170 DEG C
～180 DEG C, lower floor's temperature controls at 330 DEG C～340 DEG C, and middle level temperature controls at 380 DEG C～390 DEG C, on
Layer temperature controls at 440 DEG C～450 DEG C, and the speed of service controls at 13m/min, and topcoating cures forms thickness
For the top-coat paint film of 0.05mm, obtain heat resistance self-adhesive enameled sheet wire；
C, 23 heat resistance self-adhesive enameled sheet wire specification 2.67mm × 12.02mm, at it after transposition bunchy
Outside cladding external insulation layer, and coil on pulling equipment around forming heat resistance self-adhesive transposed conductor.
The single line adhesion strength of the heat resistance self-adhesive heat resistance self-adhesive enameled sheet wire that embodiment 3 obtains is shown in Table 5.
The integrally bending rigidity of the heat resistance self-adhesive transposed conductor that embodiment 3 obtains is shown in Table 6.
Table 5
Table 6
Use following operating procedure that heat resistance self-adhesive enameled sheet wire single line carries out adhesion strength test: by two
The wide face overlap joint of the heat resistance self-adhesive enameled sheet wire of a length of 110mm, the lap of splice is 25mm, and sample glues
Applying pressure in the length of interface is 1N/mm2, pressurized sample is put into after 120 DEG C of baking ovens solidify 24h,
Sample carries out on tensile testing machine the breaking test of different temperatures, and draw speed is 10mm/min.
The pull-off force calculated under different temperatures is single line adhesion strength with the ratio overlapping area.
By table 1, table 3 and table 5 it can be seen that along with the rising of temperature, common heat resistance self-adhesive enamel-cover is flat
The adhesion strength of line drastically declines, and the adhesion strength of heat resistance self-adhesive enameled sheet wire then changes not quite,
During 120 DEG C of high temperature, the single line adhesion strength of heat resistance self-adhesive enameled sheet wire is the 8 of common self-adhesion enameled sheet wire
More than Bei.Owing to the single line adhesion strength of the heat resistance self-adhesive enameled sheet wire of the present invention is greatly enhanced, institute
With, the adhesion strength of the heat resistance self-adhesive transposed conductor being made up of the single line of many heat resistance self-adhesive enameled sheet wires is also
Can be greatly enhanced.
Use following operating procedure that the integrally bending rigidity of heat resistance self-adhesive transposed conductor is tested: heat-resisting
The specimen length of self-adhering transposed conductor is about 200mm, applies pressure on transposed conductor radial height direction
For 1N/mm2, pressurized sample is carried out cured, solidification temperature is 115～125 DEG C, hardening time
For 48h, it is curved implosion test, pressure head radius 5mm used after sample cooling, supports span 100
Mm, test speed 10mm/min, minimum amount of deflection 5mm.Bend test condition is respectively as follows: 1) 25 DEG C
Time detection；2) 105 DEG C time insulation 60min after detect；3) 120 DEG C time insulation 60min after detect.
By table 2, table 4 and table 6 it can be seen that along with the rising of temperature, common self-adhering transposed conductor
Rigidity drastically declines, and the rigidity of heat resistance self-adhesive transposed conductor then changes not quite, at 105 DEG C, 120 DEG C high
Wen Shi, the rigidity of heat resistance self-adhesive transposed conductor is more than 3 times of common heat resistance self-adhesive transposed conductor, effectively
Improve Transformer Winding mechanical strength at high temperature, improve its anti-short circuit capability, extend its service life.
Claims (6)
1. a transformator preparation method for heat resistance self-adhesive transposed conductor, is characterized in that the method comprises the following steps:
A, to take the cross section produced be the rectangle conductor (2.1) with fillet, utilize the fixing japanning die surface-coated priming paint at conductor (2.1) of spill, enter vertical enamel-cover roasting oven and carry out baking-curing, the inlet temperature of vertical enamel-cover roasting oven controls at 120 DEG C ~ 220 DEG C, lower floor's temperature control 220 DEG C ~
310 DEG C, middle level temperature controls at 300 DEG C ~ 420 DEG C, and upper strata temperature controls at 380 DEG C ~ 450 DEG C, and the speed of service controls at 10m/min
~ 13m/min, solidifying priming paint forms primer film (2.2), and the broadside of described primer film (2.2) is circular arc indent, obtains heat resistance self-adhesive enameled sheet wire semi-finished product；
B, Half japanning die is utilized uniformly to coat finish paint in heat resistance self-adhesive enameled sheet wire surface of semi-finished, enter vertical enamel-cover roasting oven and carry out baking-curing, the inlet temperature of vertical enamel-cover roasting oven controls at 160 DEG C ~ 180 DEG C, and lower floor's temperature controls at 300 DEG C ~ 340 DEG C, and middle level temperature controls at 350 DEG C
~ 390 DEG C, upper strata temperature controls at 400 DEG C ~ 450 DEG C, and the speed of service controls at 7 m/min ~ 13m/min, and topcoating cures forms top-coat paint film (2.3), obtains heat resistance self-adhesive enameled sheet wire (2)；
C, heat resistance self-adhesive enameled sheet wire (2) are coated with external insulation layer (1) after transposition bunchy outside it, and coil on pulling equipment around forming heat resistance self-adhesive transposed conductor.
The preparation method of a kind of transformator heat resistance self-adhesive transposed conductor the most as claimed in claim 1, it is characterized in that: on the cross section of enameled sheet wire (2), when conductor (2.1) width is less than or equal to 5 mm, the indent amount of primer film (2.2) is 0.005 mm.
The preparation method of a kind of transformator heat resistance self-adhesive transposed conductor the most as claimed in claim 1, it is characterized in that: on the cross section of enameled sheet wire (2), when conductor (2.1) width is more than 5.00 mm and is less than or equal to 10.00 mm, the indent amount of primer film (2.2) is 0.010 mm.
The preparation method of a kind of transformator heat resistance self-adhesive transposed conductor the most as claimed in claim 1, it is characterized in that: on the cross section of enameled sheet wire (2), when conductor (2.1) width is more than 10.00 mm and is less than or equal to 15.00 mm, the indent amount of primer film (2.2) is 0.015 mm.
The preparation method of a kind of transformator heat resistance self-adhesive transposed conductor the most as claimed in claim 1, is characterized in that: the thickness of described primer film (2.2) is 0.08 mm ~ 0.12 mm, and the material of primer film (2.2) is acetal paint.
The preparation method of a kind of transformator heat resistance self-adhesive transposed conductor the most as claimed in claim 1, is characterized in that: the thickness of described top-coat paint film (2.3) is 0.03 mm ~ 0.05 mm, and the material of top-coat paint film (2.3) is heat resistance self-adhesive paint.
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| CN106531292A (en) * | 2016-12-06 | 2017-03-22 | 保定天威线材制造有限公司 | High temperature high bonding strength transposed lead and manufacturing process thereof |
| CN106531298A (en) * | 2017-01-16 | 2017-03-22 | 无锡统力电工股份有限公司 | Transposed conductor processed from thin film enameled rectangular wires and fabrication method of transposed conductor |
| CN107123546B (en) * | 2017-06-23 | 2018-10-26 | 中达电子(江苏)有限公司 | The preparation method of coiling, winding and coiling |
| CN108831596B (en) * | 2018-07-26 | 2024-01-19 | 江苏中容电气有限公司 | High heat-resistant insulation transposed conductor for ultrahigh voltage transformer |
| CN110310782B (en) * | 2019-07-12 | 2021-01-22 | 浙江郎立电工器材有限公司 | Processing technology and device of special self-adhesive enameled wire for household motor |
| CN110364305B (en) * | 2019-07-29 | 2024-03-29 | 湖州师范学院 | Double-roller enamelled flat wire conductor forming device |
| CN114628078A (en) * | 2021-12-31 | 2022-06-14 | 露笑科技股份有限公司 | Preparation method of electromagnetic wire with excellent anti-stripping performance |
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| CN201611583U (en) * | 2009-12-15 | 2010-10-20 | 无锡统力电工有限公司 | Porous insulating paper belt acetal self-adhesive transposed conductor |
| CN204155617U (en) * | 2014-09-30 | 2015-02-11 | 无锡统力电工有限公司 | A kind of transformer heat resistance self-adhesive transposed conductor |
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| JP5422156B2 (en) * | 2008-08-26 | 2014-02-19 | 三菱電線工業株式会社 | Insulating coated assembly wire manufacturing method |
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| CN201611583U (en) * | 2009-12-15 | 2010-10-20 | 无锡统力电工有限公司 | Porous insulating paper belt acetal self-adhesive transposed conductor |
| CN204155617U (en) * | 2014-09-30 | 2015-02-11 | 无锡统力电工有限公司 | A kind of transformer heat resistance self-adhesive transposed conductor |
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Address after: 214196, No. 22, Gong Gong Road, Donggang Town, Xishan District, Jiangsu, Wuxi Applicant after: WUXI TOLY ELECTRIC MAGNET WORK CO., LTD. Address before: 214196 A District, Donggang Town, Xishan District, Jiangsu, Wuxi Applicant before: Wuxi Toly Electric Co., Ltd. |
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Address after: 214196, No. 22, Gong Gong Road, Donggang Town, Xishan District, Jiangsu, Wuxi Patentee after: WUXI TOLY ELECTRIC MAGNET WORK Co.,Ltd. Address before: 214196, No. 22, Gong Gong Road, Donggang Town, Xishan District, Jiangsu, Wuxi Patentee before: WUXI TOLY ELECTRIC WORKS Co.,Ltd. |