CN221150901U - Cotton-free light spliced fire-resistant bus duct - Google Patents
Cotton-free light spliced fire-resistant bus duct Download PDFInfo
- Publication number
- CN221150901U CN221150901U CN202323026024.8U CN202323026024U CN221150901U CN 221150901 U CN221150901 U CN 221150901U CN 202323026024 U CN202323026024 U CN 202323026024U CN 221150901 U CN221150901 U CN 221150901U
- Authority
- CN
- China
- Prior art keywords
- bus duct
- mica
- fire
- cotton
- resistant bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 41
- 239000010445 mica Substances 0.000 claims abstract description 56
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 56
- 229910052802 copper Inorganic materials 0.000 claims abstract description 39
- 239000010949 copper Substances 0.000 claims abstract description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000010931 gold Substances 0.000 claims abstract description 16
- 229910052737 gold Inorganic materials 0.000 claims abstract description 16
- 229920006267 polyester film Polymers 0.000 claims abstract description 16
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Installation Of Bus-Bars (AREA)
Abstract
The utility model discloses a cotton-free light spliced fire-resistant bus duct, which relates to the technical field of bus duct power transmission and comprises copper bars, polyester films and mica tapes; the polyester film is wrapped on the outer side of the copper bar, and mica tapes are wrapped outside the polyester film; the copper bars which are adjacently wrapped with mica tapes are separated by mica. According to the utility model, the contact area between the copper bars is increased by using the copper bar lap joint connection mode, and the resistance is reduced, so that the bus duct can keep normal operation in a certain time. The refractory properties of the refractory bus can be improved by spacing the phases apart by the use of a gold mica plate. According to the utility model, fireproof cotton is not adopted, so that the volume and weight of the bus duct are greatly reduced, and the generation of smoke can be reduced.
Description
Technical Field
The utility model relates to the technical field of bus duct power transmission, in particular to a cotton-free light spliced fireproof bus duct.
Background
The fire-resistant bus duct is suitable for power transmission and distribution systems with rated voltage below 690V, rated working current of 250-5000A and frequency of 50-60 Hz. Through experiments and industrial electrifying operation for many years, the electric property, fire resistance and metal structure of the composite material reach the domestic advanced level. The traditional fire-resistant bus duct is generally composed of a shell adopting fire-resistant paint, a bus wrapped with fire-resistant mica tape and a bracket made of fire-resistant insulating materials. The support is provided with a plurality of grooves, and the grooves are internally provided with buses and fix the buses. One end of the bus duct is provided with a bus duct connecting box, and a bus tapping box is arranged in the bus duct. The fire-resistant bus duct has excellent insulating property, can be continuously used in normal environment and can be continuously used for more than one hour in fire environment, and can be suitable for high-rise buildings and important facilities to replace fire-resistant cables to perform power transmission and distribution functions. However, the traditional fireproof bus duct is generally made of fireproof materials and is provided with fireproof cotton, so that the volume and the weight of the bus duct are often increased, and the installation and the transportation are possibly inconvenient; the more fireproof is adopted, a large amount of smoke can be generated when the fire is received; and the joint has the problems that bolts are connected in series, so that the bus duct has limited fire resistance and the like.
Although the fire-resistant compact bus duct disclosed in China patent application No. 202111407139.4 realizes locking and positioning of the insulating partition, improves the stability of the insulating partition and is safe and reliable to use, the fire-resistant compact bus duct has the advantages of complex structure, inconvenient installation and insufficient fire resistance. The dense fire-resistant bus duct disclosed in China patent application No. 201811191604.3 has strong anti-seismic and fireproof capabilities, can continuously work under a large impact load and high temperature, but has a complex structure and large volume, and can bring inconvenience in transportation.
Disclosure of utility model
Compared with the prior art, the utility model increases the contact area between copper bars by using a copper bar lap joint connection mode, reduces the resistance and ensures that the bus duct keeps working normally in a certain time. The refractory properties of the refractory bus can be improved by spacing the phases apart by the use of a gold mica plate. According to the utility model, fireproof cotton is not adopted, so that the volume and weight of the bus duct are greatly reduced, and the generation of smoke can be reduced.
The present utility model achieves the above technical object by the following means.
A cotton-free light spliced fire-resistant bus duct comprises copper bars, polyester films and mica tapes; the polyester film is wrapped on the outer side of the copper bar, and mica tapes are wrapped outside the polyester film; the copper bars which are adjacently wrapped with mica tapes are separated by mica.
In the scheme, the copper bars wrapped with the mica tapes are separated from the metal shell through mica.
In the scheme, the mica is a gold mica plate.
In the scheme, the thickness of the gold mica plate is 2-4 mm.
In the scheme, the mica tape has 2-3 layers.
In the scheme, the copper bar joints wrapped with the mica tapes are connected in a lap joint mode.
In the scheme, the copper bars which are overlapped with each other are separated by adopting a gold mica plate.
In the above scheme, the metal shell is formed by adopting a welding mode.
In the scheme, the metal shell is formed by welding Q235 steel plates.
In the scheme, the copper bars wrapped with the mica tapes form a fireproof bus duct together with mica; the fire-resistant bus duct is arranged in the metal shell.
The beneficial effects are that:
1. Aiming at the fact that the traditional fire-resistant bus duct presents limited fire resistance when suffering from fire, the temperature of the joint is raised to short circuit when the bus duct is subjected to fire because bolts are used for being connected in series, the invention adopts the joint lap joint mode for assembling, and the bus duct copper bars are single lap joint and are not affected by each other, so that short circuit is not easy to generate, and the fire resistance of the bus duct is effectively improved.
2. Aiming at the problems that the traditional fireproof bus duct is usually flame-retardant by adopting bus fireproof cotton, smoke is easy to generate and the ecological environment is damaged, the utility model does not adopt the fireproof cotton, and separates the copper bar from the shell by utilizing the gold mica plate, so that the bus duct is not easy to generate smoke, the volume and the weight of the bus duct are greatly reduced, and the bus duct is transported and installed in aspects.
3. Aiming at the problem that the traditional fire-resistant bus duct is poor in insulating performance due to the fact that only polyester films or mica tapes are used for insulating phases, the utility model not only wraps the polyester films and the mica tapes on the copper bars, but also separates the fire-resistant bus duct phases by utilizing the gold mica boards, so that the insulating performance between the phases is improved, and the fire-resistant performance of the bus duct is improved.
4. Aiming at the problem that the integrity of the bus duct is not strong because the traditional fireproof bus duct is often connected with the shell by bolts, the bus duct is connected with the shell by full welding, so that the integrity of the bus duct is effectively improved, and the problem that the shell is loose during transportation and installation is not easy to occur.
5. According to the utility model, the fireproof bus duct which is cotton-free and fireproof for 2 hours is formed by adopting fireproof materials such as the gold mica plate, the mica tape and the like in a lap joint connection mode, so that the volume and the weight of the bus duct are greatly reduced, and the problem of inconvenient transportation is avoided. Aiming at the problem of insufficient fire resistance of the traditional fire-resistant bus duct, the utility model ensures that the copper bars are connected singly in a lap joint mode, thereby being not easy to generate short circuit and effectively improving the fire resistance of the fire-resistant bus duct. Aiming at the problem that the traditional intensive bus duct is easy to generate smoke when suffering from fire, the utility model can effectively achieve the effect of reducing the generation of smoke by not using fireproof cotton. Aiming at the problem that the integrity of the traditional intensive bus duct is not strong, the whole bus duct shell is connected in a welding mode, so that the integrity and the strength of the bus duct can be effectively improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a cotton-free lightweight spliced fire-resistant bus duct;
FIG. 2 is a schematic cross-sectional view of a cotton-free lightweight spliced fire-resistant bus duct;
FIG. 3 is a schematic cross-sectional view of a cotton-free lightweight splice-type fire-resistant busway joint;
Fig. 4 is a graph of temperature rise during a fire of a cotton-free lightweight spliced fire-resistant busbar.
Reference numerals:
1-a metal housing; 2-gold mica plate; 3-copper bars; 4-polyester film; 5-mica tape.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
1-4, A cotton-free light spliced fire-resistant bus duct comprises copper bars 3, mica tapes 5, mica plates 2, polyester films 4 and a metal shell 1; the fire-resistant bus duct is formed by wrapping a polyester film 4 outside a copper bar 3, wrapping 2-3 layers of mica tapes 5 outside the polyester film 4, separating the copper bar 3 from the copper bar by using a 3mm of mica plate 2, separating the copper bar 3 from a shell 1 by using the mica plate 2, overlapping the copper bar 3 with the copper bar, separating the phase at the joint by using the mica plate 2, and connecting the whole shell of the bus duct in a welding mode. The copper bar connection adopts the overlap joint mode, utilizes copper bar angle of bending different reasonable increase overlap joint area. The metal shell 1 adopts Q235 steel plates, and the steel plates are connected in a welding mode.
Working principle: a cotton-free light spliced fire-resistant bus duct adopts a polyester film 4 to wrap a layer of mica tape 5 with a layer thickness of 2-3 layers after wrapping the copper bar 3, so as to improve the insulation performance of the bus duct; and the fire resistance of the bus duct is enhanced by utilizing the separation of the gold mica plates 2 between the copper bars 3; meanwhile, the copper bar 3 is separated from the metal shell 1 by the gold mica plate 2 to prevent the copper bar 3 from contacting with the metal shell 1 to leak electricity, and fireproof cotton is not adopted; the joint of the bus duct is processed in a lap joint mode, so that the problem of short circuit caused by temperature rise due to the fact that bolts are used for series connection is avoided, and the fire resistance of the bus duct is greatly improved; the metal shell 1 is connected in a full-welded mode, so that flame cannot enter the bus duct when a fire occurs, and not only is the integrity of the bus duct improved, but also the fire resistance of the bus duct is improved.
As can be seen from FIG. 4, the temperature rise curve in the furnace meets the standard requirements of the test method XF/T537-2005 for flame retardant, fireproof and fire resistance of a bus trunk system (bus duct), and the test piece can keep normal operation within two hours of fire resistance due to the structure and the function of the fire-resistant material.
The HP-8 hard gold mica plate is adopted in the utility model. The product is golden and has a temperature resistance grade: the temperature resistance is 850 ℃ under the continuous use condition, 1050 ℃ under the intermittent use condition, and the excellent electrical insulation performance is achieved, and the voltage breakdown resistance index of the common product is up to 20KV/mm. The gold mica plate is a plate-shaped insulating material which is formed by using high-quality mica mineral materials to form mica paper and then adding high-performance adhesive through high-temperature and high-pressure limitation, and has excellent heat resistance, flame retardance and electrical insulation property. It has good electrical properties and mechanical strength; is a novel electrothermal insulating material plate.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model.
Claims (10)
1. The cotton-free light spliced fire-resistant bus duct is characterized by comprising copper bars (3), polyester films (4) and mica tapes (5); the polyester film (4) is wrapped on the outer side of the copper bar (3), and the mica tape (5) is wrapped outside the polyester film (4); the copper bars (3) which are adjacently wrapped with mica tapes (5) are separated by mica.
2. The cotton-free light spliced fire-resistant bus duct according to claim 1, characterized in that the copper bars (3) wrapped with mica tapes (5) are separated from the metal casing (1) by mica.
3. The cotton-free lightweight tiled fire-resistant bus duct according to claim 1, wherein the mica is a gold mica board (2).
4. A cotton-free lightweight spliced fire-resistant bus duct as claimed in claim 3, characterised in that the thickness of the gold mica plate (2) is 2-4 mm.
5. The cotton-free lightweight spliced fire-resistant bus duct of claim 1, wherein the mica tape (5) is 2-3 layers.
6. A cotton-free lightweight spliced fire-resistant bus duct as claimed in claim 3, characterized in that the joints of the copper bars (3) wrapped with mica tapes (5) are connected in a lap joint manner.
7. The cotton-free lightweight spliced fire-resistant bus duct of claim 6, wherein the copper bars (3) that overlap each other are separated by a gold mica plate (2).
8. The cotton-free lightweight spliced fire-resistant bus duct of claim 2, wherein the metal shell (1) is formed by welding.
9. The cotton-free lightweight spliced fire-resistant bus duct of claim 2, wherein the metal shell (1) is formed by welding Q235 steel plates.
10. The cotton-free light spliced fire-resistant bus duct according to claim 1, wherein a fire-resistant bus duct is formed by a plurality of copper bars (3) wrapped with mica tapes (5) and mica; the fire-resistant bus duct is arranged in the metal shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323026024.8U CN221150901U (en) | 2023-11-09 | 2023-11-09 | Cotton-free light spliced fire-resistant bus duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323026024.8U CN221150901U (en) | 2023-11-09 | 2023-11-09 | Cotton-free light spliced fire-resistant bus duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221150901U true CN221150901U (en) | 2024-06-14 |
Family
ID=91420486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323026024.8U Active CN221150901U (en) | 2023-11-09 | 2023-11-09 | Cotton-free light spliced fire-resistant bus duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221150901U (en) |
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2023
- 2023-11-09 CN CN202323026024.8U patent/CN221150901U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |