CN109494662B - Air insulation bus duct adapting to marine climate - Google Patents
Air insulation bus duct adapting to marine climate Download PDFInfo
- Publication number
- CN109494662B CN109494662B CN201811435100.1A CN201811435100A CN109494662B CN 109494662 B CN109494662 B CN 109494662B CN 201811435100 A CN201811435100 A CN 201811435100A CN 109494662 B CN109494662 B CN 109494662B
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- China
- Prior art keywords
- distance
- bus
- bus duct
- insulating
- bus bar
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- 238000009413 insulation Methods 0.000 title claims abstract description 22
- 125000006850 spacer group Chemical group 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920006267 polyester film Polymers 0.000 claims abstract description 10
- 238000005192 partition Methods 0.000 claims description 13
- 238000009825 accumulation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 abstract description 9
- 238000009833 condensation Methods 0.000 abstract description 9
- 150000003839 salts Chemical class 0.000 abstract description 7
- 239000003595 mist Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
Landscapes
- Installation Of Bus-Bars (AREA)
Abstract
The invention discloses an air insulation bus duct adapting to marine climate, and relates to a bus duct. The bus duct is widely applied to a low-voltage distribution system of a building, and is often installed in a closed wet hoistway, especially in coastal areas, the air humidity is high, salt fog is heavy, the condensation in the bus duct is serious, and the insulation level of equipment is reduced, so that the fault frequency of equipment short circuit burnout is reduced. The invention comprises a shell, a plurality of bus bars arranged in the shell and insulating spacers arranged among the bus bars, wherein insulating films are coated on the outer sides of the bus bars, symmetrical V-shaped grooves are arranged at the upper end part and the lower end part of the insulating spacers, the openings of the V-shaped grooves are opposite to the bus bars, and the bus bars are insulated and encapsulated by PET high-temperature resistant polyester films. The influence of salt fog and water vapor on the air insulation bus duct can be effectively reduced, the creepage distance is effectively increased, the creepage path is reduced, the generation of water bridge conduction is avoided, and the electrical safety of the air insulation bus duct can be effectively improved.
Description
Technical Field
The invention relates to a bus duct, in particular to an air insulation bus duct suitable for marine climate.
Background
Along with the urban process, the bus duct is widely applied to a low-voltage distribution system of a building, and is often installed in a closed wet hoistway, especially in coastal areas, the air humidity is high, salt fog is heavy, the condensation in the bus duct is serious, the insulation level of equipment is reduced, and therefore the fault frequency of equipment short circuit burnout is caused, and large economic loss and frequent complaints of users are caused.
Disclosure of Invention
The technical problems to be solved and the technical task to be put forward in the invention are to perfect and improve the prior art scheme, and the air insulation bus duct adapting to marine climate is provided for improving the electrical safety level. For this purpose, the present invention adopts the following technical scheme.
The air insulation bus duct suitable for marine climate comprises a shell, a plurality of bus bars arranged in the shell and insulation partition members arranged between the bus bars, wherein the outer sides of the bus bars are coated with insulation films, symmetrical V-shaped grooves are formed in the upper end and the lower end of each insulation partition member, and the openings of the V-shaped grooves are opposite to the bus bars. The insulating film is coated on the outer side of the bus bar, so that the influence of salt mist and water vapor on the air insulating bus duct can be effectively reduced, and the insulating distance is increased; through insulating film, upper and lower both ends portion V-arrangement groove structure's insulating spacer, can effectively increase creepage distance, reduce creepage route, can effectively promote the electric security of air insulation bus duct.
The top of the insulating spacer is composed of two symmetrical inclined planes, and the two symmetrical inclined planes form a peak with an included angle alpha, wherein alpha is more than or equal to 90 degrees and less than or equal to 160 degrees. The insulating partition piece in the angle range is pointed, so that water can quickly slide down, and water accumulation can be effectively prevented.
A first vertical edge parallel to the bus bar is arranged between the peak of the insulating spacer and the V-shaped groove; a second vertical edge matched with the bus bar is arranged between the upper V-shaped groove and the lower V-shaped groove, the distance between the two second vertical edges of the insulating partition piece is larger than the distance between the two first vertical edges, and the distance difference between the two vertical edges is larger than or equal to 10mm; the distance between the first vertical edge and the adjacent bus bar is greater than or equal to 5mm. The large-climbing-distance structure of the insulating spacer is effectively realized; and meanwhile, a water bridge is avoided from being generated between the first vertical edge and the bus bar.
As a preferable technical means: the insulating partition piece is vertically symmetrical and is bilaterally symmetrical. The symmetrical structure is convenient to manufacture and install, and symmetrical and uniform electrical insulation is realized.
As a preferable technical means: and the outer side of the bus bar is coated with a polyester film. The polyester film has good comprehensive performance, can be well adapted to marine climate, and has stable and reliable structure.
As a preferable technical means: the plurality of bus bars are arranged in parallel in the length direction of the shell, and the length of the shell is L, wherein L is more than or equal to 200mm. To ensure an electrical safety distance between the busbar rows.
As a preferable technical means: the width of the shell is B, wherein B is more than or equal to 150mm. This dimension better ensures that there is a sufficient electrical safety distance between the busbar rows.
As a preferable technical means: the linear distance between the bus bar phase line and the shell is not less than 19 mm, the linear distance between the phase line and the phase line is not less than 25.4 mm, and the zero line-to-ground distance is half of the relative phase-to-ground distance, so that the charged bodies have enough electric gaps.
As a preferable technical means: the creepage distance between the phase lines in the bus bar row and the shell is not less than 32 mm, and the creepage distance between the phase lines in the bus bar row and the phase lines is not less than 50.8 mm. The size is increased to achieve a safe distance and reduce the possibility of breakdown.
As a preferable technical means: the bus bar is insulated and encapsulated by a PET high-temperature resistant polyester film, the insulating partition part is an insulating sleeve of the whole bus bar, and the insulating sleeve on the bus bar of each section is closed. The creepage path of the relative ground and the relative phase is avoided, so that reliable operation is ensured under the condition that condensation exists in the bus duct, and corrosion of salt mist and water vapor in the marine climate environment to the bus duct can be prevented.
The beneficial effects are that:
1. the creepage distance is effectively increased, the large creepage distance structure is effectively realized, enough electric safety distance between bus bars is ensured, electric safety is improved, and reliable operation of the bus duct is ensured.
2. The characteristic of large creepage distance avoids condensation to generate a water bridge and form a conductive surface.
3. The bus bar is insulated and encapsulated by a PET high-temperature resistant polyester film, the insulating partition part is an insulating sleeve of the whole bus bar, and the insulating sleeve on the bus bar of each section is closed. The creepage path of the relative ground and the relative phase is avoided, so that reliable operation is ensured under the condition that condensation exists in the bus duct, and corrosion of salt mist and water vapor in the marine climate environment to the bus duct can be prevented.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
In the figure: 1-a housing; 2-busbar rows; 3-insulating spacers; 301-a first vertical edge; 302-V-grooves; 303-pinnacles; 304-second vertical side.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings.
As shown in fig. 1, the air insulation bus duct suitable for marine climate comprises a shell 1, 4 bus bars 2 arranged in the shell 1, and insulation spacers 3 arranged between the bus bars 2, wherein the outer sides of the bus bars 2 are coated with insulation films, the upper and lower end parts of the insulation spacers 3 are respectively provided with symmetrical V-shaped grooves 302, and the openings of the V-shaped grooves 302 are opposite to the bus bars 2.
In order to prevent water accumulation, the top of the insulating spacer 3 is formed by two symmetrical inclined planes forming a peak 303 with an included angle alpha, wherein alpha is more than or equal to 90 degrees and less than or equal to 160 degrees. The insulation spacer 3 with the angle range is pointed at 303, so that water accumulation can be effectively prevented, and the creepage distance of the pointed at 303 can be effectively increased.
In order to realize the large creepage distance structure of the insulating spacer 3, a first vertical edge 301 parallel to the bus bar 2 is arranged between the peak 303 of the insulating spacer 3 and the V-shaped groove 302, a second vertical edge 304 matched with the bus bar 2 is arranged between the upper V-shaped groove 302 and the lower V-shaped groove 302, and the difference between the distance between the two second vertical edges 304 of the insulating spacer 3 and the distance between the two first vertical edges 301 is 12mm. The large-creepage distance structure of the insulating spacer 3 is effectively realized, and meanwhile, the generation of a water bridge is avoided.
For ease of installation, the insulating spacers 3 are symmetrical up and down, left and right. The manufacturing and the installation are convenient, and the symmetrical and uniform electrical insulation property is realized.
In order to adapt to marine climate, the outer side of the busbar 2 is coated with a polyester film. The polyester film has good comprehensive performance, can be well adapted to marine climate, and has stable and reliable structure.
In order to ensure an electrical safety distance between the busbar 2, 4 busbar 2 are arranged in parallel in the length direction of the housing 1, and the length of the housing 1 is 200mm. To ensure an electrical safety distance between the busbar 2.
In order to better ensure a sufficient electrical safety distance between the busbar 2, the width of the housing 1 is 150mm. This dimension better ensures a sufficient electrical safety distance between the busbar 2.
In order to ensure that the charged bodies have enough electric gaps, the linear distance between the phase line and the shell 1 of the bus bar 2 is not less than 19 mm, the linear distance between the phase line and the phase line is not less than 25.4 mm, and the zero line-to-ground distance is half of the relative phase-to-ground distance so as to ensure that the charged bodies have enough electric gaps.
In order to avoid the generation of a water bridge due to condensation, the creepage distance between the phase lines in the busbar 2 and the shell is not less than 32 mm, and the creepage distance between the phase lines in the busbar 2 and the phase lines is not less than 50.8 mm. So as to avoid the formation of a conductive surface due to the formation of water bridges caused by condensation.
In order to ensure reliable operation under the condition that condensation exists in the bus duct, the bus bar 2 is insulated and encapsulated by PET high-temperature resistant polyester film, the insulating partition 3 is provided with a whole insulating sleeve, and the insulating sleeve on the bus bar of each section is sealed. The creepage path of the relative ground and the relative phase is avoided, so that reliable operation is ensured under the condition that condensation exists in the bus duct, and corrosion of salt mist and water vapor in the marine climate environment to the bus duct can be prevented.
The invention effectively increases the creepage distance, reduces the creepage path, avoids water accumulation, avoids generating water bridge conduction, reduces the influence of marine climate on the bus duct, and can effectively improve the electrical safety of the air insulation bus duct.
The air insulation bus duct suitable for marine climate shown in fig. 1 is a specific embodiment of the invention, has already shown the essential characteristics and improvements of the invention, and can be modified in terms of shape, structure and the like according to practical use requirements under the teaching of the invention, and all the modifications are within the scope of protection of the scheme.
Claims (6)
1. Air insulation bus duct that adapts to marine climate, its characterized in that: comprises a shell (1), a plurality of bus bars (2) arranged in the shell (1) and insulating spacers (3) arranged between the bus bars (2); the outer side of the bus bar (2) is coated with an insulating film, the upper end part and the lower end part of the insulating partition (3) are respectively provided with symmetrical V-shaped grooves (302), the opening of each V-shaped groove (302) is opposite to the bus bar (2), and the creepage distance is increased and the creepage path is reduced through the insulating film and the insulating partition with the V-shaped groove structures at the upper end part and the lower end part; the top of the insulating partition (3) is composed of two symmetrical inclined planes, and the two symmetrical inclined planes form a peak (303) with an included angle alpha, wherein alpha is more than or equal to 90 degrees and less than or equal to 160 degrees, so that water can quickly slide down and water accumulation is prevented; a first vertical edge (301) parallel to the bus bar (2) is arranged between the peak (303) of the insulating spacer (3) and the V-shaped groove (302); a second vertical edge (304) matched with the bus bar (2) is arranged between the upper V-shaped groove (302) and the lower V-shaped groove (302), the distance between the two second vertical edges (304) of the insulating partition (3) is larger than the distance between the two first vertical edges (301), and the distance difference between the two vertical edges is larger than or equal to 10mm; the distance between the first vertical edge (301) and the adjacent bus bar (2) is more than or equal to 5mm, so that a large-climbing-distance structure of the insulating spacer is realized, and a water bridge is prevented from being generated between the first vertical edge and the bus bar;
the insulating partition (3) is vertically symmetrical and is bilaterally symmetrical;
the bus bars (2) are arranged in parallel in the length direction of the shell (1), the length of the shell (1) is L, and L is more than or equal to 200mm;
the insulating spacer (3) is provided with a whole insulating sleeve, and the insulating sleeve on the busbar of each section is closed.
2. The marine climate adapted air insulated bus duct of claim 1, wherein: and the outer side of the bus bar (2) is coated with a polyester film.
3. The marine climate adapted air insulated bus duct of claim 1, wherein: the width of the shell (1) is B, wherein B is more than or equal to 150mm.
4. A marine climate adapted air insulated bus duct according to claim 3, wherein: the linear distance between the phase line of the busbar (2) and the shell (1) is not less than 19 mm, the linear distance between the phase line and the phase line is not less than 25.4 mm, and the zero line-to-ground distance is half of the relative phase-to-ground distance, so that the charged bodies have enough electric gaps.
5. The marine climate adapted air insulated bus duct of claim 4, wherein: the creepage distance between the phase lines in the bus bar (2) and the shell is not less than 32 mm, and the creepage distance between the phase lines in the bus bar (2) and the phase lines is not less than 50.8 mm.
6. Marine climate adapted air insulated bus duct according to any of claims 1-5, wherein: and the bus bar (2) is insulated and encapsulated by adopting a PET high-temperature resistant polyester film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811435100.1A CN109494662B (en) | 2018-11-28 | 2018-11-28 | Air insulation bus duct adapting to marine climate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811435100.1A CN109494662B (en) | 2018-11-28 | 2018-11-28 | Air insulation bus duct adapting to marine climate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109494662A CN109494662A (en) | 2019-03-19 |
| CN109494662B true CN109494662B (en) | 2024-02-20 |
Family
ID=65698080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811435100.1A Active CN109494662B (en) | 2018-11-28 | 2018-11-28 | Air insulation bus duct adapting to marine climate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109494662B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5789709A (en) * | 1996-08-30 | 1998-08-04 | General Electric Company | Adjustable busway end box |
| JP2011030366A (en) * | 2009-07-27 | 2011-02-10 | Furukawa Electric Co Ltd:The | Bus duct, and structure for connecting the same |
| CN102361294A (en) * | 2011-06-13 | 2012-02-22 | 天津电气传动设计研究所 | Intelligent copper-aluminum composite conductor bus groove |
| CN105762735A (en) * | 2014-12-19 | 2016-07-13 | 华彤电气集团有限公司 | Novel bus duct connection unit |
| CN205985477U (en) * | 2016-08-30 | 2017-02-22 | 苏州西典机电有限公司 | Effectively increase creepage distance's female arranging of stromatolite |
| CN206834675U (en) * | 2017-05-18 | 2018-01-02 | 上海庞大电气成套有限公司 | A kind of safety and environmental protection bus duct |
| CN207166089U (en) * | 2017-07-25 | 2018-03-30 | 美为（天津）电气技术有限公司 | A kind of waterproof dust-proof bus duct |
| CN209497227U (en) * | 2018-11-28 | 2019-10-15 | 国网浙江省电力有限公司舟山供电公司 | A kind of bus duct adapting to marine climate |
-
2018
- 2018-11-28 CN CN201811435100.1A patent/CN109494662B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5789709A (en) * | 1996-08-30 | 1998-08-04 | General Electric Company | Adjustable busway end box |
| JP2011030366A (en) * | 2009-07-27 | 2011-02-10 | Furukawa Electric Co Ltd:The | Bus duct, and structure for connecting the same |
| CN102361294A (en) * | 2011-06-13 | 2012-02-22 | 天津电气传动设计研究所 | Intelligent copper-aluminum composite conductor bus groove |
| CN105762735A (en) * | 2014-12-19 | 2016-07-13 | 华彤电气集团有限公司 | Novel bus duct connection unit |
| CN205985477U (en) * | 2016-08-30 | 2017-02-22 | 苏州西典机电有限公司 | Effectively increase creepage distance's female arranging of stromatolite |
| CN206834675U (en) * | 2017-05-18 | 2018-01-02 | 上海庞大电气成套有限公司 | A kind of safety and environmental protection bus duct |
| CN207166089U (en) * | 2017-07-25 | 2018-03-30 | 美为（天津）电气技术有限公司 | A kind of waterproof dust-proof bus duct |
| CN209497227U (en) * | 2018-11-28 | 2019-10-15 | 国网浙江省电力有限公司舟山供电公司 | A kind of bus duct adapting to marine climate |
Non-Patent Citations (1)
| Title |
|---|
| 复合母排增加爬电距离方法研究;徐习文等;《新技术新工艺》(第第8期期);第55-57页 * |
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| Publication number | Publication date |
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| CN109494662A (en) | 2019-03-19 |
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