CN217847527U

CN217847527U - Light environment-friendly digital monitoring comprehensive flat cable

Info

Publication number: CN217847527U
Application number: CN202220332413.XU
Authority: CN
Inventors: 杨兆文; 王成旺; 宋斌; 蔡长威; 刘书鑫
Original assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Current assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-11-18
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a flat cable is synthesized in digital control of light environment-friendly, including the power sinle silk, signal sinle silk and radio frequency sinle silk keep apart core frame circumference through Y shape polyethylene and arrange and constitute oval cable core with the transposition jointly of counterpoint type whole aromatic copolyamide tensile fiber core, the outside cladding ETFE resin of cable core constitutes the package around the covering, the nylon wire is antitorque around covering and polyurethane oversheath, the power sinle silk includes that two insulation sinle silks pair twist constitute the power cord core and cladding PET resin around covering and the crowded package sheath of nylon resin, the signal sinle silk includes that two insulation pair twist sinle silks pair twist constitute the signal sinle silk core and cladding iron powder polyethylene resin composite winding layer, conductive fiber winding shielding layer and nylon resin area are around the covering, the radio frequency sinle silk includes the radio frequency conductor, silane grafting crosslinked low density polyethylene insulating layer, conductive fiber weaves shielding layer and polyester fiber plain weave cloth layer. The cable meets the requirement of environmental protection, is prepared in a light way, and has a balanced cable structure.

Description

Light environment-friendly digital monitoring comprehensive flat cable

Technical Field

The application relates to the technical field of cables, in particular to a light environment-friendly digital monitoring comprehensive flat cable.

Background

The rated voltage is 450/750V or below, the traffic signal transmission application cable needs to be applied to a digital monitoring comprehensive cable, needs to have excellent signal transmission performance and is generally a comprehensive cable integrating a power line, a signal line and a radio frequency line. The cable usually uses copper wire to weave or copper strips shielding layer, and the easy broken string rupture phenomenon that appears causes the shielding effect unstable, influences the electrical characteristic, simultaneously, copper strips or copper lines quantity are many, and weight is big, and manufacturing cost is high, is unfavorable for light weight lightweight production needs. Under the trend of popularization and application of halogen-free low-smoke flame-retardant environment-friendly electric wires and cables, the environment-friendly cables need to meet the ROHS instruction of European Union, and environment-friendly cable products do not contain substances harmful to human bodies, such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers, which are prohibited in the ROHS instruction. Therefore, it is one of the main issues to develop an environmentally friendly cable while satisfying the design requirements of lightweight and lightweight cables.

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art, and the technical problem that solve provides a flat cable is synthesized in light environment-friendly digital monitoring, adopts the nontoxic flame retardant material of halogen-free low cigarette, accords with the environmental protection cable requirement, realizes light lightweight preparation, and cable structure is balanced stable, and the reliability is better, increase of service life.

The present application solves the above-mentioned problems by the following technical solutions.

Light environment-friendly digital monitoring integrated flat cable comprises a power core, a signal core and a radio frequency core, wherein the power core, the signal core and the radio frequency core are circumferentially arranged in a spaced manner through a Y-shaped polyethylene isolation core frame and are jointly twisted with a para-type wholly aromatic copolyamide tensile fiber core material to form an oval cable core, an ETFE (ethylene-vinyl fluoride) resin wrapping layer, a nylon anti-twisting wrapping layer and a polyurethane outer sheath are sequentially wrapped outside the cable core, the outer diameter of the power core is smaller than the outer diameter of the signal core and is larger than the outer diameter of the radio frequency core, the power core comprises two insulation core pairs to form a power core body, the insulation core comprises a power conductor and an XLPE (cross linked polyethylene) insulation layer, a PET (polyethylene terephthalate) resin wrapping layer and a nylon resin extruding wrapping sheath are sequentially wrapped outside the power core body, the signal core comprises two insulation pair-twisted pair cable cores to form a signal core body, the insulation pair-twisted cable core comprises a signal conductor and a silane grafted cross-linked high-density polyethylene insulation layer, an iron powder polyethylene resin composite wrapping layer, a conductive fiber wrapping layer and a nylon resin tape layer, and a woven fabric wrapping layer are sequentially wrapped outside the radio frequency conductor.

Preferably, the power supply conductor is formed by twisting and pressing a plurality of soft copper wires with the wire diameter of 0.02mm to 0.05mm to form a circular conductor structure, and the diameter of the power supply conductor is 1mm to 1.4mm.

Preferably, the PET resin wrapping layer is a PET resin belt one-way spiral lapping and covering wrapping structure.

Preferably, the signal conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameters of 0.01mm to 0.04mm, and the diameters of the signal conductors are 1mm to 1.4mm.

Preferably, the conductive fiber winding shielding layer is a conductive fiber bundle spiral winding structure, the weaving density is 95% to 98%, and the conductive fiber bundle is formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating a copper conductive coating.

Preferably, the radio frequency conductor is formed by co-twisting a plurality of tin-plated copper monofilaments and para-type wholly aromatic copolyamide drawn fibers, and the diameter of the radio frequency conductor is 1.6mm to 1.8mm.

Preferably, the conductive fiber braided shielding layer is a cylindrical supporting net body formed by lapping and braiding double-layer aramid twisted wires in a reverse spiral mode, a plurality of conductive fiber bundles are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber bundles are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

Preferably, the major-minor axis ratio of the elliptic cable core is 1.4.

Preferably, the power core to signal core outer diameter ratio is from 0.85 to 0.95, the radio frequency core to signal core outer diameter ratio is from 0.65 to 1 to 0.8.

The beneficial effect of this application:

1. each layer, each wire core and the filling core material of the cable meet the ROHS instruction of European Union, meet the requirements of environment-friendly cables, do not contain harmful substances to human health, have no pollution to the environment, and are beneficial to environmental protection and renewable treatment.

2. The shielding layer is wound by conductive fibers and woven by the conductive fibers instead of the metal shielding layer, so that light and lightweight production is facilitated, the occurrence of wire breakage of the metal shielding layer is thoroughly eradicated, the conductive fiber bundles wound by the conductive fibers are formed by twisting polyacrylonitrile-based carbon fibers and coating copper conductive coatings, the shielding performance is stable, the weight of the cable is effectively reduced, the cost is reduced, and the requirements of light production are met. Meanwhile, the iron powder and polyethylene resin composite winding layer is additionally arranged to enhance the capability of shielding signal interference, and the iron powder filler and polyethylene resin composite material is adopted, so that the polyethylene resin base layer can help to reduce stress concentration of the conductive fiber winding shielding layer, reduce torque force, enhance the capability of inhibiting external noise interference, reduce signal attenuation and have better signal transmission characteristic.

3. The special structural design of the Y-shaped polyethylene isolation core frame is adopted, the outer diameter proportion of the power core, the signal core and the radio frequency core is optimized, the oval cable core section with a specific proportion relation is favorably ensured, the cable structure is balanced and stable, the tensile elastic modulus of the para-type wholly aromatic copolyamide tensile fiber core material is large, the cable core can better bear the lateral pressure when the cable is bent, the flexibility, the extrusion resistance and the bending resistance of the cable are improved, the deformation and the wire breakage of each core conductor are favorably prevented, the stable electrical property is maintained, the safety and the reliability are better, and the service life is prolonged.

4. Through increasing the antitorque covering of nylon wire, improve the stretch-proofing performance of cable, help reducing the local stress concentration of each sinle silk in the cable core, reduce the moment of torsion power, improved the resistant twist performance of cable greatly for the cable possesses better bending resistance.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Description of reference numerals:

1-power wire core, 11-insulating wire core, 111-power conductor, 112-XLPE insulating layer, 12-PET resin wrapping layer, 13-nylon resin extrusion sheath, 2-signal wire core, 21-insulating twisted-pair wire core, 211-signal conductor, 212-silane grafted crosslinked high-density polyethylene insulating layer, 22-iron powder polyethylene resin composite winding layer, 23-conductive fiber winding shielding layer, 24-nylon resin tape wrapping layer, 3-radio frequency wire core, 31-radio frequency conductor, 32-silane grafted crosslinked low-density polyethylene insulating layer, 33-conductive fiber woven shielding layer, 34-polyester fiber plain weave wrapping layer, 4-Y-shaped polyethylene isolation core frame, 5-para-type wholly aromatic copolyamide drawn fiber core material, 6-ETFE resin wrapping layer, 7-nylon wire anti-torsion layer and 8-polyurethane outer sheath.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application, which will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the light and environment-friendly digital monitoring integrated flat cable according to the embodiment of the present application includes a power core 1, a signal core 2 and a radio frequency core 3, which are circumferentially spaced by a Y-shaped polyethylene isolation core frame 4 and are twisted together with a para-type wholly aromatic copolyamide drawn fiber core material 5 to form an oval cable core, and further, the length to axis ratio of the oval cable core is 1.4. The power core 1 outer diameter is smaller than the signal core 2 outer diameter and larger than the radio frequency core 3 outer diameter, further, the power core 1 and the signal core 2 outer diameter ratio is 0.85 to 0.95, the radio frequency core 3 and the signal core 2 outer diameter ratio is 0.65. The insulated wire core 11 comprises a power supply conductor 111 and an XLPE insulated layer 112, specifically, the power supply conductor 111 is formed by twisting and pressing a plurality of soft copper wires with the wire diameter of 0.02mm to 0.05mm to form a circular conductor structure, and the diameter of the power supply conductor 111 is 1mm to 1.4mm. The outside cladding in proper order of power cord core has PET resin to wrap covering 12 and nylon resin crowded package sheath 13, in an embodiment, PET resin takes the cover to wrap the structure for the one-way spiral in PET resin area around covering 12. The signal wire core 2 comprises two insulated twisted-pair wire cores 21 twisted in pairs to form a signal wire core body, each insulated twisted-pair wire core 21 comprises a signal conductor 211 and a silane grafted crosslinked high-density polyethylene insulating layer 212, specifically, the signal conductor 211 is formed by concentrically twisting a plurality of tin-plated copper monofilaments with the diameters of 0.01mm to 0.04mm, and the diameter of the signal conductor 211 is 1mm to 1.4mm. The outside cladding has compound winding layer 22 of iron powder polyethylene resin, conductive fiber winding shielding layer 23 and nylon resin area in proper order around covering 24 of signal line core, in an embodiment, conductive fiber winding shielding layer 23 is conductive fiber bundle spiral winding structure and weaving density is 95% to 98%, conductive fiber bundle is a plurality of polyacrylonitrile base carbon fiber transposition and coats copper conductive coating and form. The radio frequency conductor core 3 comprises a radio frequency conductor 31, a silane grafted cross-linked low-density polyethylene insulating layer 32, a conductive fiber woven shielding layer 33 and a polyester fiber plain weave wrapping layer 34, wherein the silane grafted cross-linked low-density polyethylene insulating layer, the conductive fiber woven shielding layer and the polyester fiber plain weave wrapping layer are sequentially coated outside the radio frequency conductor 31, specifically, the radio frequency conductor 31 is formed by jointly twisting a plurality of tin-plated copper monofilaments and para-type wholly aromatic copolyamide drawn fibers, and the diameter of the radio frequency conductor 31 is 1.6mm to 1.8mm. In one embodiment, the conductive fiber braided shield layer 33 is formed by a cylindrical supporting net body formed by double layers of aramid twisted wires which are reversely spirally braided in a wrapping manner, a plurality of conductive fiber bundles are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber bundles are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating a copper conductive coating.

The cable core is coated with an ETFE resin wrapping layer 6, a nylon wire anti-torsion wrapping layer 7 and a polyurethane outer sheath 8 in sequence, and the power wire core 1 comprises two insulating wire cores 11 twisted in pairs to form a power wire core body.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used to illustrate the technical solutions of the present application, but not to limit the technical solutions, and the scope of the present application is not limited to the above-mentioned embodiments, although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application.

Claims

1. Light environment-friendly digital monitoring synthesizes flat cable, characterized by: including power sinle silk (1), signal sinle silk (2) and radio frequency sinle silk (3) through Y shape polyethylene isolation core frame (4) circumference partition arrange and with counterpoint type wholly aromatic copolyamide tensile fiber core (5) transposition jointly constitute oval cable core, the cable core outside in proper order the cladding have ETFE resin around covering (6), nylon wire antitorque around covering (7) and polyurethane oversheath (8), power sinle silk (1) external diameter is less than signal sinle silk (2) external diameter just is greater than radio frequency sinle silk (3) external diameter, power sinle silk (1) includes two insulation sinle silk (11) transposition constitution power cord cores, insulation sinle silk (11) are including power conductor (111) and winding PE insulating layer (112), the outer cladding in proper order of XLL power cord core has PET resin around covering (12) and nylon resin crowded package sheath (13), signal sinle silk (2) include two insulation sinle silk (21) transposition constitution signal sinle silk cores core cores, insulation pair twist sinle silk (21) include signal conductor (211) and silane grafting high density polyethylene insulating layer (212), signal sinle silk (3) and silane grafting polyethylene resin grafting resin winding layer (31) cover are in proper order the cladding are including the outer of radio frequency grafting polyethylene conductor (31) and the cladding of radio frequency grafting polyethylene core (31) and the cladding are in the outer polyethylene core (31) and the cladding of grafting polyethylene core (24) are in proper order the cladding of cable conductor (31) are in the cladding The insulation layer (32), the conductive fiber woven shielding layer (33) and the polyester fiber plain weave lapping layer (34).

2. The light-weight environment-friendly digital monitoring integrated flat cable according to claim 1, characterized in that: the power supply conductor (111) is formed by twisting and pressing a plurality of soft copper wires with the wire diameter of 0.02mm to 0.05mm to form a circular conductor structure, and the diameter of the power supply conductor (111) is 1mm to 1.4mm.

3. The light-weight environment-friendly digital monitoring integrated flat cable according to claim 1, characterized in that: the PET resin wrapping layer (12) is of a PET resin belt one-way spiral lapping and covering wrapping structure.

4. The light-weight environment-friendly digital monitoring integrated flat cable according to claim 1, characterized in that: the signal conductor (211) is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameters of 0.01mm to 0.04mm, and the diameter of the signal conductor (211) is 1mm to 1.4mm.

5. The light-weight environment-friendly digital monitoring integrated flat cable according to claim 1, characterized in that: the conductive fiber winding shielding layer (23) is of a conductive fiber bundle spiral winding structure, the weaving density is 95% -98%, and the conductive fiber bundle is formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating a copper conductive coating.

6. The light-weight environment-friendly digital monitoring integrated flat cable according to claim 1, characterized in that: the radio frequency conductor (31) is formed by jointly twisting a plurality of tin-plated copper monofilaments and para-type wholly aromatic copolyamide drawn fibers, and the diameter of the radio frequency conductor (31) is 1.6-1.8 mm.

7. The light-weight environment-friendly digital monitoring integrated flat cable according to claim 1, characterized in that: the conductive fiber braided shielding layer (33) is a cylindrical supporting net body formed by lapping and braiding double-layer aramid twisted wires in a reverse spiral mode, a plurality of conductive fiber bundles are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber bundles are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

8. The light-weight environment-friendly digital monitoring integrated flat cable according to claim 1, characterized in that: the long-short axis ratio of the oval cable core is 1.4.

9. The light-weight environment-friendly digital monitoring integrated flat cable according to claim 1, characterized in that: the power core (1) and signal core (2) outer diameter ratio is 0.85 to 0.95, the radio frequency core (3) and signal core (2) outer diameter ratio is 0.65 to 0.8.