CN109215895B - Busbar insulation coating process - Google Patents
Busbar insulation coating process Download PDFInfo
- Publication number
- CN109215895B CN109215895B CN201810906202.0A CN201810906202A CN109215895B CN 109215895 B CN109215895 B CN 109215895B CN 201810906202 A CN201810906202 A CN 201810906202A CN 109215895 B CN109215895 B CN 109215895B
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- Prior art keywords
- busbar
- insulating film
- layer
- straight section
- coating
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- 238000000576 coating method Methods 0.000 title claims abstract description 33
- 238000009413 insulation Methods 0.000 title claims abstract description 20
- 239000002390 adhesive tape Substances 0.000 claims abstract description 35
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 239000000565 sealant Substances 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 12
- 239000010410 layer Substances 0.000 claims description 53
- 238000000034 method Methods 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 16
- 239000011247 coating layer Substances 0.000 claims description 13
- 230000001680 brushing effect Effects 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000005253 cladding Methods 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 3
- 229920006267 polyester film Polymers 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims 2
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000003292 glue Substances 0.000 description 16
- 238000005452 bending Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
Abstract
The invention discloses a busbar insulation coating process which comprises the steps of coating an insulating film, sealing by using an adhesive tape, coating a sealant, airing or drying and the like.
Description
Technical Field
The invention relates to the technical field of bus duct production, in particular to an insulation coating process of a bus bar.
Background
Under the condition that the bus ducts are widely applied, the dense insulation type bus ducts become the bus duct type mainly applied at present, and the busbars of the bus ducts are generally wrapped in an unsealed open manner by adopting an insulation material. In the actual use process of the bus duct, the insulation resistance of the bus duct is easily greatly reduced due to the fact that the influence of the external environment is affected by damp, interphase short circuit is caused in serious conditions, huge potential safety hazards are left for a power distribution system, and the use occasions are greatly limited. At present, a pouring bus duct is generally adopted for a damp place, but the manufacturing cost of the pouring bus duct is high, heavy and difficult to maintain. In view of this, it is of great significance to optimize the busbar cladding process of the existing intensive insulation type bus duct so as to improve the protection capability of the bus duct.
Disclosure of Invention
In order to solve the problems, the invention provides a busbar insulation coating process to solve the problem that the insulation performance and the protection performance of the conventional bus duct system are poor.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a busbar insulation cladding process comprises the following steps:
the method comprises the following steps: coating an insulating film, coating the insulating film on the surface of the busbar straight section to form a first insulating coating layer for coating the busbar straight section, and overlapping two sides of the insulating film;
step two: the adhesive tape is sealed, and for the straight section of the busbar, the adhesive tape is adhered at the overlapped part of the two sides of the insulating film to form an adhesive layer for connecting the two sides of the insulating film together; for the bending angle of the busbar, winding the adhesive tape at the bending angle of the busbar to form a glue winding layer for wrapping the bending angle of the busbar, wherein the glue winding layer extends to the straight section of the busbar so as to overlap the glue winding layer and the first insulating wrapping layer;
step three: brushing a sealant, namely brushing the sealant at the joint between the adhesive tapes and the insulating film;
step four: and airing or drying the busbar.
Preferably, in the first step, the width of the overlapping region on both sides of the insulating film is not less than 20 mm.
Preferably, in the first step, two layers of insulating films are coated on the busbar straight section, namely a first layer of insulating film coated on the busbar straight section and a second layer of insulating film coated on the first layer of insulating film, and the overlapping regions on two sides of the first layer of insulating film and the overlapping regions on two sides of the second layer of insulating film are respectively arranged on two sides of the busbar straight section.
Furthermore, the first layer of insulating film extends and wraps up to the head end of female arranging straight section, and one side of second layer of insulating film is seted up the breach so that the tip of second layer of insulating film covers to female two sides of arranging the bent angle to form the second insulating coating that covers female arranging the bent angle.
Furthermore, the length of the gap on the second layer of insulating film is 15 to 25mm larger than the length of the busbar bend.
Preferably, in the second step, the width of the overlapping region between the glue winding layer and the first insulating coating layer is not less than 30 mm.
Preferably, in the second step, at least two layers of adhesive tapes are wound on the busbar, and in each layer of adhesive tape, the adjacent two circles of adhesive tapes are partially overlapped.
Preferably, in the third step, the width of the glue coating area on the straight section of the busbar is at least 20mm larger than the width of the glue layer.
Preferably, in the third step, the brushing thickness of the sealant is not more than 0.5 mm.
Preferably, the insulating film is a PET polyester film.
The invention has the beneficial effects that: according to the invention, through the steps of coating the insulating film on the busbar, sealing with the adhesive tape, coating the sealant and the like, the moisture resistance of the busbar can be greatly improved on the premise of keeping the intensive structure of the bus duct, so that the bus duct has extremely high protection capability and insulation performance, the operation of a bus duct system is ensured to be safer and more reliable, and the bus duct system can be applied to wider occasions.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a block diagram of a process flow of the present invention;
FIG. 2 is a schematic diagram of a busbar;
FIG. 3 is a schematic view of the structure of a first insulating film;
FIG. 4 is a schematic view of the structure of the second insulating film;
FIG. 5 is a schematic view of the encapsulation of the insulating film;
FIG. 6 is a schematic winding view of the adhesive tape;
fig. 7 is a schematic view of the application of the sealant.
Detailed Description
Referring to fig. 1 to 7 (the direction indicated by the arrow in fig. 2 is the direction of the head end of the straight section 11 of the busbar), the present invention is a busbar insulation coating process, which includes the following steps:
the method comprises the following steps: coating an insulating film 2, coating the insulating film 2 on the surface of the busbar straight section 11 to form a first insulating coating layer coating the busbar straight section 11, and overlapping two sides of the insulating film 2 to form an overlapping region with a certain width;
step two: for the straight section 11 of the busbar, the adhesive tape is adhered at the overlapping part of the two sides of the insulating film 2 to form an adhesive layer for connecting the two sides of the insulating film 2 together, so that the insulating film 2 is prevented from loosening; for the busbar bend 12, winding the adhesive tape at the busbar bend 12 to form a tape winding layer 41 for wrapping the busbar bend 12, wherein the tape winding layer 41 extends to the straight section 11 of the busbar so that the tape winding layer 41 is partially overlapped with the first insulating coating layer, and the wound or adhered adhesive tape has a smooth surface and no obvious wrinkles;
step three: painting sealant, namely painting the sealant at the joints between the adhesive tapes and the insulating film 2 to form a first glue coating layer 51 on the busbar straight section 11 and a second glue coating layer 52 on the busbar corner 12 so as to cover the joints with the sealant;
step four: and airing or drying the busbar.
Specifically, in the first step, the width of the overlapping region on both sides of the insulating film 2 is not less than 20 mm.
In addition, in the first step, the bus bar straight section 11 is coated with two layers of insulating films 2, which are a first layer of insulating film 21 coated on the bus bar straight section 11 and a second layer of insulating film 22 coated on the first layer of insulating film 21. The first insulating film 21 and the second insulating film 22 are used for insulating and wrapping the busbar straight section 11 in a double-layer positive and negative staggered wrapping mode, namely overlapping areas on two sides of the first insulating film 21 and overlapping areas on two sides of the second insulating film 22 are respectively arranged on two sides of the busbar straight section 11.
Further, the first insulating film layer 21 extends and wraps the head end of the busbar straight section 11. One side of the second insulating film 22 is notched to allow the end of the second insulating film 22 to cover both sides of the busbar bend 12, thereby forming a second insulating coating layer covering the busbar bend 12, and the second insulating film 2 also coats the side wall of the busbar bend 12, thereby performing a good insulating coating effect on the busbar bend 12.
Specifically, the length of the notch on the second insulating film 22 is 15 to 25mm greater than the length of the bus bar bend 12, that is, the distance between the end surface of the notch and the bus bar bend 12 is 15 to 25 mm.
The busbar has two straight sections 11, and two layers of insulating films 2 are coated on the two straight sections 11, that is, a first layer of insulating film 21 and a second layer of insulating film 22 are coated on each straight section 11. Every straight section 11 all adopts double-deck positive and negative dislocation parcel mode to wrap up straight section 11. The busbar bend 12 is wrapped in a double-layer staggered cross manner, that is, the second insulating film 22 on each straight section 11 is provided with a notch, so that the second insulating film 22 on each straight section 11 covers the top surface and the bottom surface of the busbar bend 12, the second insulating film 2 also covers the side wall of the busbar bend 12, and the second insulating films 22 on the two straight sections 11 are overlapped on the bend 12.
In the second step, the width of the overlapping area between the winding glue layer 41 and the first insulating coating layer is not less than 30mm to prevent liquid from entering between the adhesive tape and the insulating film 2. In addition, the adhesive tape is wound with at least two layers on the busbar, and in the adhesive tape of each layer, the adhesive tapes of two adjacent circles are partially overlapped to avoid liquid from entering between the adhesive tapes. Preferably, the width of the overlapping area of two adjacent circles of adhesive tapes is not less than 5 mm.
In addition, as for the adhesive tape adhered on the insulating film 2 to connect the two sides of the insulating film 2 together, two ways can be adopted, one is that a double-sided adhesive tape with adhesive coated on both sides is adopted, namely, the top surface of one side of the insulating film 2 and the bottom surface of the other side of the insulating film 2 are adhered together, and the width of the adhesive layer is not less than 15 mm; and the other is to adopt an adhesive tape with a single surface covered with adhesive, namely the adhesive tape is attached to the top surfaces of the two sides of the insulating film 2 to shield the seams of the two sides of the insulating film 2, and the two sides of the insulating film 2 are connected at the same time, and the distance between the edge of the adhesive layer and the seams of the insulating film 2 is not less than 15 mm. If the width of the tape is not sufficient, the tape may be stuck on the insulating film 2 in a partially overlapped manner to shield the seam of the insulating film 2, and the width of the overlapped portion of the tape is not less than 10 mm.
In the third step, the width of the glue coating area on the busbar straight section 11 is at least 20mm larger than the width of the glue layer, that is, the width of the first glue coating layer 51 is at least 20mm larger than the width of the glue layer; in addition, the second glue coating 52 extends to the upper part of the straight section 11, and the length of the second glue coating 52 is at least 20mm greater than that of the glue winding layer 41, so as to ensure good waterproof sealing effect.
In addition, the brushing thickness of the sealant is not more than 0.5mm, so that the sealant can play a good waterproof sealing role, and the sealant can be prevented from being easily broken off after being cured due to over-thick brushing.
And in the fourth step, the busbar is aired or dried so as to cure the sealant. The natural airing time is 2h to 6h, generally about 4h, and the airing time is properly adjusted according to the ambient temperature and humidity. Or sent into a drying chamber or a dryer for heating and drying so as to shorten the curing time of the sealant and remove the moisture on the busbar. According to the invention, the sealant is preferably room temperature vulcanized silicone rubber, can be firmly adhered to the surface of the adhesive tape without heating or waiting for too long time, is not easy to fall off, still has good toughness and elasticity after being vulcanized, and ensures that the coated busbar is not crushed in the assembly process. When heating and drying are carried out, the drying temperature is 50-60 ℃, and the drying time is 0.5-2 h. The higher the drying temperature is, the shorter the time required for drying is, but the drying temperature is not preferably more than 80 ℃.
In the present invention, the insulating film 2 is preferably a PET polyester film, and the temperature resistance level thereof is B level or more. The insulating film 2 may be made of polyimide, polyethylene, polyvinylidene fluoride, polytetrafluoroethylene, or the like. The adhesive tape is preferably a high-temperature-resistant electric insulating adhesive tape, and the base material of the adhesive tape can be Teflon or polyimide and the like.
The above examples are only preferred embodiments of the present invention, and other embodiments of the present invention are possible. Those skilled in the art can make equivalent changes or substitutions without departing from the spirit of the present invention, and such equivalent changes or substitutions are included in the scope set forth in the claims of the present application.
Claims (8)
1. A busbar insulation cladding process is characterized by comprising the following steps:
the method comprises the following steps: coating an insulating film (2), coating the insulating film (2) on the surface of the busbar straight section (11) to form a first insulating coating layer for coating the busbar straight section (11), and overlapping two sides of the insulating film (2);
step two: the adhesive tape is sealed, and for the straight section (11) of the busbar, the adhesive tape is adhered at the overlapped part of the two sides of the insulating film (2) to form an adhesive layer for connecting the two sides of the insulating film (2) together; for the busbar bend (12), winding the adhesive tape at the busbar bend (12) to form an adhesive winding layer (41) for coating the busbar bend (12), wherein the adhesive winding layer (41) extends to the straight section (11) of the busbar so as to enable the adhesive winding layer (41) to be partially overlapped with the first insulating coating layer;
step three: brushing a sealant, namely brushing the sealant at the joint between the adhesive tapes and the insulating film (2);
step four: airing or drying the busbar;
in the first step, two layers of insulating films (2) are coated on the busbar straight section (11), namely a first layer of insulating film (21) coated on the busbar straight section (11) and a second layer of insulating film (22) coated on the first layer of insulating film (21), and the overlapping area on two sides of the first layer of insulating film (21) and the overlapping area on two sides of the second layer of insulating film (22) are respectively arranged on two sides of the busbar straight section (11); the first layer of insulating film (21) extends and wraps the head end of the busbar straight section (11), one side of the second layer of insulating film (22) is provided with a notch so that the end part of the second layer of insulating film (22) covers the two surfaces of the busbar bend (12), and therefore a second insulating coating layer covering the busbar bend (12) is formed.
2. The busbar insulation coating process according to claim 1, wherein the process comprises the following steps: in the first step, the width of the overlapping area of the two sides of the insulating film (2) is not less than 20 mm.
3. The busbar insulation coating process according to claim 1, wherein the process comprises the following steps: the length of the gap on the second layer of insulating film (22) is 15 to 25mm larger than the length of the busbar bend (12).
4. The busbar insulation coating process according to claim 1, wherein the process comprises the following steps: in the second step, the width of the overlapping area between the adhesive layer (41) and the first insulating coating layer is not less than 30 mm.
5. The busbar insulation coating process according to claim 1, wherein the process comprises the following steps: and in the second step, at least two layers of adhesive tapes are wound on the busbar, and in each layer of adhesive tape, the adjacent two circles of adhesive tapes are partially overlapped.
6. The busbar insulation coating process according to claim 1, wherein the process comprises the following steps: in the third step, the width of the gluing area on the busbar straight section (11) is at least 20mm larger than that of the gluing layer.
7. The busbar insulation coating process according to claim 1, wherein the process comprises the following steps: in the third step, the painting thickness of the sealant is not more than 0.5 mm.
8. The busbar insulation coating process according to claim 1, wherein the process comprises the following steps: the insulating film (2) is a PET polyester film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906202.0A CN109215895B (en) | 2018-08-09 | 2018-08-09 | Busbar insulation coating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906202.0A CN109215895B (en) | 2018-08-09 | 2018-08-09 | Busbar insulation coating process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109215895A CN109215895A (en) | 2019-01-15 |
| CN109215895B true CN109215895B (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810906202.0A Active CN109215895B (en) | 2018-08-09 | 2018-08-09 | Busbar insulation coating process |
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| Country | Link |
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| CN (1) | CN109215895B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114121344B (en) * | 2021-11-17 | 2024-01-05 | 固德电材系统（苏州）股份有限公司 | Insulating busbar and preparation method and application thereof |
| CN114803652B (en) * | 2022-03-28 | 2024-02-23 | 苏州科伦特电气有限公司 | Busbar adhesive winding device integrating adhesive feeding and adhesive winding and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365741Y (en) * | 1999-04-09 | 2000-02-23 | 吴三明 | Bus-bar duct conductive body insulated with epoxy resin powder fluidization |
| CN101895074A (en) * | 2009-05-18 | 2010-11-24 | 上海杰帝实业有限公司 | Device for connecting buses at right angle in plane |
| CN105957591A (en) * | 2016-06-23 | 2016-09-21 | 深圳市沃尔核材股份有限公司 | Irregular busbar and insulation method thereof |
| CN107644969A (en) * | 2016-07-21 | 2018-01-30 | 福特全球技术公司 | Elastic Multi-layer busbar |
| CN107800092A (en) * | 2016-08-30 | 2018-03-13 | 天津中建电气成套设备有限公司 | A kind of L-type vertical bus groove elbow |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08149665A (en) * | 1994-11-15 | 1996-06-07 | Showa Electric Wire & Cable Co Ltd | Method for insulating bus bar in insulating bus duct |
-
2018
- 2018-08-09 CN CN201810906202.0A patent/CN109215895B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365741Y (en) * | 1999-04-09 | 2000-02-23 | 吴三明 | Bus-bar duct conductive body insulated with epoxy resin powder fluidization |
| CN101895074A (en) * | 2009-05-18 | 2010-11-24 | 上海杰帝实业有限公司 | Device for connecting buses at right angle in plane |
| CN105957591A (en) * | 2016-06-23 | 2016-09-21 | 深圳市沃尔核材股份有限公司 | Irregular busbar and insulation method thereof |
| CN107644969A (en) * | 2016-07-21 | 2018-01-30 | 福特全球技术公司 | Elastic Multi-layer busbar |
| CN107800092A (en) * | 2016-08-30 | 2018-03-13 | 天津中建电气成套设备有限公司 | A kind of L-type vertical bus groove elbow |
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| CN109215895A (en) | 2019-01-15 |
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