CN211427916U - Photoelectric composite B1-grade flame-retardant aluminum alloy power cable - Google Patents
Photoelectric composite B1-grade flame-retardant aluminum alloy power cable Download PDFInfo
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- CN211427916U CN211427916U CN202020036017.3U CN202020036017U CN211427916U CN 211427916 U CN211427916 U CN 211427916U CN 202020036017 U CN202020036017 U CN 202020036017U CN 211427916 U CN211427916 U CN 211427916U
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Abstract
The utility model discloses a compound fire-retardant aluminum alloy power cable of B1 level of photoelectricity in power cable field, include the cable core that sets gradually by interior to exterior, the fire-retardant heat-sink shell of low smoke and zero halogen, the concentric layer, low smoke and zero halogen comprehensive protection layer, aluminum alloy area interlocking armor and oversheath layer, the cable core is by the aluminum alloy core insulation core of three the same sectional areas, a light unit and the fire-retardant filling rope of low smoke and zero halogen are constituteed, three aluminum alloy core insulation core evenly distributed are in the cable core, the light unit is located the space department that three aluminum alloy core insulation core formed, and at the cable core intermediate position. The cable realizes the transmission of power and signals in the building in the same cable, reduces the problems of cable installation and circuit disorder, reduces the pollution of electromagnetic radiation to the surrounding environment, and is suitable for installation in narrow space; the flame retardant has good mechanical property, bending property, creep resistance, corrosion resistance, excellent electrical property and combustion property meeting B1 level in GB 31247-2017.
Description
Technical Field
The utility model relates to a power cable technical field specifically is a fire-retardant aluminum alloy power cable of compound B1 level of photoelectricity.
Background
The aluminum alloy core cable overcomes the defects of poor mechanical property, bending property, creep resistance, corrosion resistance and the like of the aluminum core cable, has the characteristics of lighter weight, higher flexibility, more energy conservation and higher cost performance than a copper core, and is more suitable for installation in narrow spaces in buildings. However, in a building, not only power transmission but also signal transmission such as television, telephone, and network is required, and an optical cable is generally used. In the past, cables and optical cables are respectively installed and laid, so that the space is occupied, the layout is disordered, and the maintenance is inconvenient. Meanwhile, cables in buildings generally require a three-phase five-wire system for personal safety, and meanwhile, the cables are required to have low smoke, no halogen, rat and termite resistance and lower electromagnetic pollution to the surrounding environment, and particularly, with the continuous deep research of the theory of combustion science in the global scope and the wide application of an entity fire simulation test, the flame spread characteristic, the heat release characteristic and the smoke generation characteristic of the cables under specific combustion conditions are also considered.
Based on this, the utility model designs a compound fire-retardant aluminum alloy power cable of B1 level of photoelectricity, this cable is based on the excellent properties of aluminum alloy core and the cable that the interior cable of building required the special properties that possesses under the new form and proposed one kind of cable to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fire-retardant aluminum alloy power cable of compound B1 level of photoelectricity to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant aluminum alloy power cable of compound B1 level of photoelectricity, includes cable core, low smoke and zero halogen fire-retardant heat-sink shell, concentric layer, low smoke and zero halogen comprehensive protection layer, aluminum alloy area interlocking armor and oversheath layer that set gradually by inside to outside, the cable core comprises the aluminum alloy core insulation core of three the same sectional areas, a light unit and the fire-retardant filler rope of low smoke and zero halogen, three aluminum alloy core insulation core evenly distributed are in the cable core, the light unit is located the space department that three aluminum alloy core insulation core formed, and at the intermediate position of cable core, the fire-retardant filler rope of low smoke and zero halogen is filled in the space that three aluminum alloy core insulation core formed in the cable core.
Preferably, the three aluminum alloy core insulated wire cores and the optical unit are stranded into a cable core by a cabling machine.
Preferably, the aluminum alloy core insulated wire core is composed of an aluminum alloy core conductor and a crosslinked polyethylene insulated layer, the aluminum alloy core conductor is formed by twisting a plurality of strands of rolled aluminum alloy single wires, and the crosslinked polyethylene insulated layer is extruded on the outer surface of the aluminum alloy core conductor to form the insulated layer.
Preferably, the optical unit is a circular non-metal central tube type optical cable or a circular non-metal layer stranded optical cable.
Preferably, the round non-metal layer stranded optical cable is composed of a loose tube containing a plurality of G657 optical fibers, a plastic filling rope, a central reinforcement and a sheath, wherein the sheath is formed by extruding a low-smoke halogen-free flame-retardant sheath material.
Preferably, the circular nonmetal central tube type optical cable is composed of a loose tube containing a plurality of G657 optical fibers, an outer layer reinforcing member and a sheath, and the sheath is formed by extruding a low-smoke halogen-free flame-retardant sheath material.
Preferably, the outer surface of the cable core is overlapped and wrapped with 2 pieces of glued low-smoke halogen-free flame-retardant cloth belts, the overlapping rate of each piece is not less than 50%, and a low-smoke halogen-free flame-retardant heat absorption layer is formed.
Preferably, the periphery of the low-smoke halogen-free flame-retardant heat absorption layer is tightly attached to and is sparsely wound on a plurality of round aluminum alloy single lines, a layer of aluminum tape is wound on the opposite direction to form a concentric layer, the interval between the sparsely wound aluminum alloy single lines is not larger than 4mm, a layer of ceramic low-smoke halogen-free insulating material is extruded outside the concentric layer to form a low-smoke halogen-free comprehensive protective layer.
Preferably, the aluminum alloy belt interlocking armor layer is formed by pre-pressing a plurality of aluminum alloy belts into a plurality of sections of S-shaped curved surfaces, the low-smoke halogen-free comprehensive protective layer is used as a center and is rotationally coated outside the low-smoke halogen-free comprehensive protective layer, and the plurality of sections of S-shaped curved surfaces are mutually buckled to form the aluminum alloy belt interlocking armor layer.
Preferably, the low-smoke halogen-free comprehensive protective layer is a ceramic low-smoke halogen-free insulating material, and the outer sheath layer is a rat-proof termite-proof high-flame-retardant low-smoke halogen-free material.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the cable can realize the transmission of the electric power and the signal in the building part in the same cable, reduce the problems of the installation of the cable and the disorder of the circuit and is convenient to overhaul.
2. The cable has good mechanical property, bending property, creep resistance, corrosion resistance and excellent electrical property, and has portability and high cost performance, so that the cable is high in quality and low in price when used in a building.
3. The cable can be installed in a narrower space than other cables of the same specification, and meanwhile, the pollution of electromagnetic radiation to the surrounding environment is reduced.
4. The cable can meet the B1-grade flame retardant requirement in GB31247-2017, has excellent flame spread characteristic, heat release characteristic and smoke generation characteristic, and is widely applicable to buildings with dense crowds.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the cable core structure of the present invention;
FIG. 3 is a schematic view of the structure of the aluminum alloy core insulated wire core of the present invention;
FIG. 4 is a schematic structural view of the round non-metal layer stranded optical cable of the present invention;
fig. 5 is the structural schematic diagram of the circular non-metal central tube type optical cable of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. loosening the sleeve; 2. a G657 optical fiber; 3. an outer layer reinforcement; 4. a central reinforcement; 5. a plastic filling rope; 6. a sheath; 7. a circular non-metallic central tube cable; 8. a round non-metal layer stranded optical cable; 9. A crosslinked polyethylene insulating layer; 10. an aluminum alloy core conductor; 11. an aluminum alloy core insulated wire core; 12. a light unit; 13. a low-smoke halogen-free flame-retardant filling rope; 14. a cable core; 15. a low-smoke halogen-free flame-retardant heat absorption layer; 16. concentric layers; 17. a low-smoke halogen-free comprehensive protective layer; 18. an aluminum alloy strip interlocking armor layer; 19. an outer jacket layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Examples
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a compound fire-retardant aluminum alloy power cable of B1 level of photoelectricity, include cable core 14 that sets gradually from inside to outside, fire-retardant heat-sink shell 15 of low smoke and zero halogen, concentric layer 16, low smoke and zero halogen synthesizes inoxidizing coating 17, aluminum alloy area interlocking armor 18 and oversheath layer 19, cable core 14 comprises three aluminum alloy core insulation core 11 of the same sectional area, a light unit 12 and fire-retardant filler rope 13 of low smoke and zero halogen, three aluminum alloy core insulation core 11 evenly distributed are in cable core 14, light unit 12 is located the space department that three aluminum alloy core insulation core 11 formed, and in the intermediate position of cable core 14, fire-retardant filler rope 13 of low smoke and zero halogen fills in the space that three aluminum alloy core insulation core 11 formed in cable core 14.
In this embodiment, three aluminum alloy core insulated wire cores 11 and one optical unit 12 are stranded by a cabling machine into a cable core 14.
In this embodiment, the aluminum alloy core insulated wire core 11 is composed of an aluminum alloy core conductor 10 and a crosslinked polyethylene insulated layer 9, the aluminum alloy core conductor 10 is formed by twisting a plurality of strands of rolled aluminum alloy single wires, the aluminum alloy single wires have the characteristics of high compression coefficient and small outer diameter, the outer diameter of the cable can be reduced, and the crosslinked polyethylene insulated layer 9 is extruded on the outer surface of the aluminum alloy core conductor 10 to form the insulated layer.
In this embodiment, the optical unit 12 is a circular non-metal central tube optical cable 7 or a circular non-metal layer stranded optical cable 8. The round non-metal layer stranded optical cable 8 is composed of a loose tube 1 containing a plurality of G657 optical fibers 2, a plastic filling rope 5, a central reinforcement 4 and a sheath 6, wherein the sheath 6 is formed by extruding a low-smoke halogen-free flame-retardant sheath material. The round non-metal central tube type optical cable 7 is composed of a loose tube 1 containing a plurality of G657 optical fibers 2, an outer layer reinforcement 3 and a sheath 6, wherein the sheath 6 is formed by extruding low-smoke halogen-free flame-retardant sheath materials, and the G657 optical fibers 2 have excellent bending resistance. The outside of cable core 14 overlaps around package 2 rubber coating low smoke and zero halogen flame retardant strap and every overlap rate is no less than 50%, has formed low smoke and zero halogen flame retardant heat-sink shell 15, and this layer has fire-retardant, heat absorption and the effect that separates the oxygen at the cable combustion in-process, reduces the production of the heat of internal combustion and flue gas, also plays the effect of keeping apart cable core 14 and concentric layer 16 simultaneously.
In this embodiment, the periphery of the low-smoke halogen-free flame-retardant heat absorption layer 15 is tightly attached to and loosely wound on a plurality of round aluminum alloy single wires, and simultaneously, a layer of aluminum tape is wound in the opposite direction to form a concentric layer 16. The concentric layer 16 is intended to function not only as a neutral conductor but also as a shielding layer during use of the cable. The number of the aluminum alloy single lines of the concentric layer 16 and the diameter of the single lines are determined by three aluminum alloy core conductors 10 in the cable core 14, the requirement of the section of the neutral line is met, the interval between the aluminum alloy single lines which are sparsely wound simultaneously cannot be larger than 4mm, a ceramic low-smoke halogen-free insulating material layer is extruded outside the concentric layer 16, and a low-smoke halogen-free comprehensive protective layer 17 is formed. The concentric structure design of the neutral line not only enables the inner conductor of the cable to form a symmetrical structure, but also forms a shielding layer, thereby reducing the electromagnetic pollution of the cable to the surrounding environment, enabling the self flexibility to be better, reducing the outer diameter of the cable, and being more beneficial to laying and installing in a narrow space. And moreover, the heat conduction (heat dissipation) effect is achieved in the cable combustion process, and the combustion of substances in the cable is reduced, so that the generation of internal combustion heat and smoke is reduced.
In this embodiment, the aluminum alloy strip interlocked armor layer 18 is formed by pre-pressing a plurality of aluminum alloy strips into a plurality of sections of S-shaped curved surfaces, the low-smoke halogen-free integrated protective layer 17 is used as a center to rotationally cover the outside of the low-smoke halogen-free integrated protective layer 17, and the plurality of sections of S-shaped curved surfaces are mutually buckled to form the aluminum alloy strip interlocked armor layer 18. The aluminum alloy belt interlocking armor layer 18 is a fire blocking layer in the combustion process, reduces the generation of internal combustion heat and smoke, is a rat-proof layer and is resistant to compression and smashing and used as a grounding wire in the use process, has outstanding bending performance, has the minimum bending radius which can reach 7 times of the outer diameter of a cable, and is suitable for being installed in a narrow space.
In this embodiment, the integrated low-smoke halogen-free protective layer 17 is made of a ceramic low-smoke halogen-free insulating material, and the integrated low-smoke halogen-free protective layer 17 not only becomes a ceramic armor body in the combustion process and plays roles of oxygen isolation, flame retardance and heat insulation, reduces the flame spread distance, prevents the combustion of internal materials, reduces the generation of internal combustion heat and smoke, but also exists as an insulating layer of a concentric layer 16 and an aluminum alloy belt interlocking armor layer 18. The outer sheath layer 19 is made of rat-proof termite-proof high-flame-retardant low-smoke halogen-free material. The outer sheath layer 19 is an outermost protective layer of the cable, can play a role in rat and termite prevention and certain physical and mechanical protection of the cable, and simultaneously plays a role in preventing the flame from spreading without dropping and loosening in the combustion process, and the material of the layer is required to burn as little as possible and generate less smoke in the combustion process.
The utility model discloses the aluminum alloy core 11 with three the same cross-sections forms concentric layer 16 as the neutral conductor by many aluminum alloy single lines in cable core 14 again in its outside, and aluminum alloy belt interlocking armor 18 is as the earth connection, and concentric structure for the cable external diameter is littleer, and bending property is also better, and its electromagnetic shielding performance is also more excellent simultaneously, and taking interlocking armor 18 as the earth connection to the aluminum alloy belt, has reduced aluminum alloy conductor's ground wire, and its cost has more the advantage.
The cable core 14 comprises three aluminum alloy core insulated wire cores 11 with the same cross section area, a light unit 12 and a low-smoke halogen-free flame-retardant filling rope 13, the transmission of electric power and signals inside a building part is realized in the same cable, the problems of installation of the cable and circuit disorder are reduced, and meanwhile, the maintenance is convenient.
A ceramic low-smoke halogen-free insulating material is extruded outside the concentric layer 16 to form a low-smoke halogen-free flame-retardant comprehensive protective layer 17, and the ceramic low-smoke halogen-free flame-retardant comprehensive protective layer becomes a ceramic armor body in the combustion process, plays roles of oxygen isolation, flame retardance and heat insulation, and is used as an insulating layer of the concentric layer 16 and an aluminum alloy interlocking armor layer 18. And a self-locking aluminum alloy belt interlocking armor layer 18 is coated outside the steel wire. The aluminum alloy strip interlocking armor layer 18 is a fire barrier layer in the combustion process, reduces the generation of internal combustion heat and smoke, is a rat-proof layer and is resistant to compression and smashing and used as a grounding wire in the use process.
The utility model discloses make product burning behavior reach B1 level on the selection of structure and material, its execution standard is GB31247-2017, what the cable was examined is flame spread, heat release and produce the cigarette characteristic, and additional examination burning drippage, flue gas toxicity, corrosivity, it accords with modern combustion theory, is favorable to fire control engineer to building conflagration danger evaluation and performance fire prevention design; meanwhile, a layer of high-flame-retardant rat-proof termite-proof low-smoke halogen-free material is extruded outside the aluminum alloy strip interlocking armor layer 18 to form an outer sheath layer 19, so that the rat-proof termite-proof aluminum alloy cable also has rat-proof termite-proof performance. And the class B cable required in the reference performs the standard GB/T19666-2005. Flame spread was assessed only in bundled combustions. The electromagnetic shielding device can realize synchronous transmission of B1 level and electric energy and signals, and has the advantages of better bending property, smaller outer diameter, lower price and better electromagnetic shielding performance.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a compound fire-retardant aluminum alloy power cable of B1 level of photoelectricity which characterized in that: including cable core (14), low smoke and zero halogen flame retardant heat-absorbing layer (15), concentric layer (16), low smoke and zero halogen comprehensive protection layer (17), aluminum alloy area interlocking armor (18) and oversheath layer (19) that set gradually from inside to outside, cable core (14) comprise three aluminum alloy core insulation core (11) of the same sectional area, a light unit (12) and low smoke and zero halogen flame retardant filling rope (13), three aluminum alloy core insulation core (11) evenly distributed are in cable core (14), light unit (12) are located the space department that three aluminum alloy core insulation core (11) formed, and in the intermediate position of cable core (14), low smoke and zero halogen flame retardant filling rope (13) are filled in the space that three aluminum alloy core insulation core (11) formed in cable core (14).
2. The photoelectric composite B1-grade flame-retardant aluminum alloy power cable according to claim 1, wherein: the three aluminum alloy core insulated wire cores (11) and the optical unit (12) are stranded into a cable core (14) by a cabling machine.
3. The photoelectric composite B1-grade flame-retardant aluminum alloy power cable according to claim 1, wherein: the aluminum alloy core insulated wire core (11) is composed of an aluminum alloy core conductor (10) and a crosslinked polyethylene insulating layer (9), the aluminum alloy core conductor (10) is formed by twisting a plurality of strands of rolled aluminum alloy single wires, and the crosslinked polyethylene insulating layer (9) is extruded on the outer surface of the aluminum alloy core conductor (10) to form the insulating layer.
4. The photoelectric composite B1-grade flame-retardant aluminum alloy power cable according to claim 1, wherein: the optical unit (12) is a round nonmetal central tube type optical cable (7) or a round nonmetal layer stranded optical cable (8).
5. The photoelectric composite B1-grade flame-retardant aluminum alloy power cable according to claim 4, wherein: circular non-metal layer stranded optical cable (8) comprise loose sleeve pipe (1), plastics filling rope (5), central reinforcement (4), sheath (6) that contain many G657 optic fibre (2), sheath (6) are extruded by the fire-retardant sheath material of low smoke and zero halogen and are formed.
6. The photoelectric composite B1-grade flame-retardant aluminum alloy power cable according to claim 4, wherein: circular nonmetal central tube formula optical cable (7) comprise loose sleeve pipe (1), outer reinforcement (3) and sheath (6) that contain many G657 optic fibre (2), and sheath (6) are extruded by low smoke and zero halogen flame retardant sheath material and are formed.
7. The photoelectric composite B1-grade flame-retardant aluminum alloy power cable according to claim 1, wherein: the outside of cable core (14) overlaps around 2 rubber coating low smoke and zero halogen flame retardant strap and every overlap rate is no less than 50%, has formed low smoke and zero halogen flame retardant heat absorption layer (15).
8. The photoelectric composite B1-grade flame-retardant aluminum alloy power cable according to claim 1, wherein: the periphery of low smoke and zero halogen flame retardant heat absorption layer (15) is hugged closely and is dredged around many circular aluminum alloy single lines to simultaneously around package one deck aluminium strip in the opposite direction, form concentric layer (16), dredge interval between the aluminum alloy single line of winding must not be greater than 4mm, one deck pottery low smoke and zero halogen insulation material is crowded to wrap in concentric layer (16) outside, forms low smoke and zero halogen comprehensive inoxidizing coating (17).
9. The photoelectric composite B1-grade flame-retardant aluminum alloy power cable according to claim 8, wherein: the aluminum alloy strip interlocking armor layer (18) is formed by prepressing a plurality of aluminum alloy strips into a plurality of sections of S-shaped curved surfaces, the low-smoke halogen-free comprehensive protective layer (17) is used as a center to rotationally cover the outside of the low-smoke halogen-free comprehensive protective layer (17), and the plurality of sections of S-shaped curved surfaces are mutually buckled to form the aluminum alloy strip interlocking armor layer (18).
10. The photoelectric composite B1-grade flame-retardant aluminum alloy power cable according to claim 1, wherein: the low-smoke halogen-free comprehensive protective layer (17) is made of ceramic low-smoke halogen-free insulating materials, and the outer sheath layer (19) is made of rat-proof termite-proof high-flame-retardant low-smoke halogen-free materials.
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| CN202020036017.3U CN211427916U (en) | 2020-01-08 | 2020-01-08 | Photoelectric composite B1-grade flame-retardant aluminum alloy power cable |
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| CN202020036017.3U CN211427916U (en) | 2020-01-08 | 2020-01-08 | Photoelectric composite B1-grade flame-retardant aluminum alloy power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114360806A (en) * | 2021-12-09 | 2022-04-15 | 通鼎互联信息股份有限公司 | Durable and water-blocking photoelectric composite cable |
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- 2020-01-08 CN CN202020036017.3U patent/CN211427916U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114360806A (en) * | 2021-12-09 | 2022-04-15 | 通鼎互联信息股份有限公司 | Durable and water-blocking photoelectric composite cable |
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