CN217008727U - Stretch-proofing marine combination cable - Google Patents

Abstract

The utility model discloses a stretch-resistant combined cable for ships, which comprises a power core, a control core, a video core, a para-type wholly aromatic copolyamide stretch fiber core and two PFA stretch-resistant core pipes, wherein the two PFA stretch-resistant core pipes are twisted together to form a cable core, the outer diameter ratio of the power core to the video core is 1:1 to 1:0.95, the outer diameter of the control core is not more than 85% of the outer diameter of the power core, the two PFA stretch-resistant core pipes are positioned at two sides of the control core, the power core and the control core are arranged between the para-type wholly aromatic copolyamide stretch fiber core and the control core, and a polyvinyl chloride extrusion inner sheath, an AFRP reinforced wrapping layer and a polyvinyl chloride extrusion outer sheath are sequentially wrapped outside the cable core. The cable is high in mechanical strength, high in flexibility, excellent in tensile resistance, less prone to core breaking and wire breaking, better in safety and reliability and longer in service life.

Description

Stretch-proofing marine combination cable

Technical Field

The application relates to the technical field of cables, in particular to a combined cable for a stretch-proofing ship.

Background

The ship cable is a wire cable special for systems such as power, illumination, control, communication, microcomputer and the like of various ships, offshore oil platforms and waterborne buildings in rivers and oceans. The marine cable needs to have excellent requirements on temperature resistance, fire resistance, flame retardance, oil resistance, moisture resistance, seawater resistance, excellent electrical and mechanical properties and the like. The 3+2+1 marine combination cable is used for a video monitoring system of a large ship and an offshore oil platform and is used as comprehensive wiring, and the cable is required to be safe, reliable and long in service life due to the fact that the working environment condition is severe. However, the mechanical strength of the common marine cable is low, the tensile resistance is not enough, the internal wire core is easy to break, the electrical characteristics of normal operation are affected, the safety and reliability are poor, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the technical problem that solve provides a stretch-proofing marine combination cable, optimizes the cable core structure, and mechanical strength is high, has high pliability, excellent stretch-proofing performance, is difficult for appearing disconnected core disconnection problem, and fail safe nature is better, increase of service life.

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

The combined cable for the stretch-proofing ship comprises a power core, a control core, a video core, a para-type wholly aromatic copolyamide stretched fiber core and two PFA stretch-proofing core pipes which are jointly twisted to form a cable core, wherein the outer diameter ratio of the power core to the video core is 1:1 to 1:0.95, the outer diameter of the control core is not more than 85% of the outer diameter of the power core, the two PFA stretch-proofing core pipes are positioned on two sides of the control core, the power core and the control core are arranged between the para-type wholly aromatic copolyamide stretched fiber core and the control core, and a polyvinyl chloride extrusion inner sheath, an AFRP reinforced wrapping layer and a polyvinyl chloride extrusion outer sheath are sequentially wrapped outside the cable core.

Preferably, the power line core comprises three insulated wire cores and three PFA resin core strips which are jointly twisted to form a power line core body, the power line core body is externally coated with a butyronitrile polyvinyl chloride outer insulating layer, and the insulated wire cores comprise power conductors, insulated lubricating silicone grease and a crosslinked polyethylene insulating layer.

Preferably, the power conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.02mm to 0.05 mm.

Preferably, the control wire core comprises two insulating twisted-pair wire cores and a control wire core body which is formed by the two insulating twisted-pair wire cores and two polypropylene resin core strips together, the insulating twisted-pair wire cores comprise control conductors and silane grafted cross-linked low-density polyethylene insulating layers, and an iron powder polyethylene resin composite inner winding layer, a copper wire winding shielding layer and an iron powder polyethylene resin composite inner and outer winding layer are sequentially coated outside the control wire core body.

Preferably, the control conductor is formed by twisting a plurality of tin-plated copper monofilaments with the diameter of 0.01mm to 0.04mm together with a plurality of para-type wholly aromatic copolyamide drawn fiber bundles.

Preferably, the copper wire winding shielding layer is formed by mixing and spirally winding two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1, and the shielding density is 90-95%.

Preferably, the AFRP reinforced wrapping layer is of a double-layer aramid fiber strand woven structure with reverse spiral winding and different spiral angles, and the diameter of the aramid fiber strand is 0.18mm to 0.35 mm.

Preferably, the video cable core comprises an inner conductor, and a cross-linked fluororubber insulator, an iron powder polypropylene resin wrapping shielding layer, a shielding mesh conductor layer and a PET resin extrusion layer which are sequentially coated outside the inner conductor.

Preferably, the inner conductor is formed by stranding a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.04 mm.

As preferred, shielding netted conductor layer is inside and outside double-deck tinned wire syntropy spiral winding and forms, and the winding pitch and the spiral angle degree of inlayer tinned wire and outer tinned wire are all the same, inlayer tinned wire line footpath is 0.04mm to 0.08mm, outer tinned wire line footpath is 0.06mm to 0.12mm, inlayer tinned wire line footpath is no longer than 85% of outer tinned wire line footpath.

The beneficial effect of this application:

1. the outer diameter proportion of the power supply wire core, the control wire core and the video wire core is optimized, and the para-type wholly aromatic copolyamide tensile fiber core strip and the two PFA tensile core tubes are added to be jointly twisted to form the cable core, so that the cable core structure keeps a circular section, the stress balance of the cable core is facilitated, and the mechanical strength and the tensile property are improved. The tensile elastic modulus of the para-type wholly aromatic copolyamide tensile fiber core strip is large, so that the cable can better bear lateral pressure during bending, the extrusion resistance and the bending resistance of the PFA tensile core tube structure are better, the flexibility and the tensile resistance of the cable are improved, the load stress applied to the cable core from the outside is relieved to a certain extent, the local stress concentration of each wire core is reduced, the cable core structure is kept balanced, the occurrence of deformation and wire breakage of the wire core conductor is prevented, the stable electrical characteristic is kept, the safety and the reliability are better, and the service life is prolonged.

And 2, the AFRP reinforced wrapping layer can improve the tensile strength and the torsion resistance of the cable, and the cable is favorable for keeping good elasticity and high flexibility.

3. The cross-linked fluororubber insulator is coated outside the inner conductor, so that the lateral pressure during bending can be borne, the flexibility and the stretch-resistant performance of the video cable core can be improved, and the occurrence of core breaking and wire breaking can be prevented.

4. Through the compound interior winding layer of iron powder polyethylene resin, the copper wire winding shielding layer forms the shielding conductor jointly with the compound interior outer winding layer of iron powder polyethylene resin, the signal attenuation volume has significantly reduced, reinforce shielding performance, improve anti-interference performance, the compound area of iron powder polyethylene resin is at the copper wire winding shielding in situ skin around the package, effectually prevent that copper wire winding shielding layer tinned copper wire easily takes place loose problem when crooked, help preventing disconnected core broken string and taking place, guarantee the stability of shielding characteristic, durability and usability is better.

Drawings

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

Description of reference numerals:

1-power supply wire core, 11-insulating wire core, 111-power supply conductor, 112-insulating lubricating silicone grease, 113-crosslinked polyethylene insulating layer, 12-PFA resin core strip, 13-butyronitrile polyvinyl chloride outer insulating layer, 2-control wire core, 21-insulating twisted-pair wire core, 211-control conductor, 212-silane-grafted crosslinked low-density polyethylene insulating layer, 22-polypropylene resin core strip, 23-iron powder polyethylene resin composite inner winding layer, 24-copper wire winding shielding layer, 25-iron powder polyethylene resin composite inner and outer winding layer, 3-video wire core, 31-inner conductor, 32-crosslinked fluororubber insulator, 33-iron powder polypropylene resin winding shielding layer, 34-shielding mesh conductor layer, 35-PET resin extrusion layer, 4-para-type wholly aromatic copolyamide drawn fiber core strip, 5-PFA stretch-proof core pipe, 6-polyvinyl chloride extruded inner sheath, 7-AFRP reinforced wrapping layer and 8-polyvinyl chloride extruded outer sheath.

Detailed Description

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

Referring to fig. 1, the stretch-resistant composite cable for a ship according to the embodiment of the present application includes a power core 1, a control core 2, a video core 3, a para-type wholly aromatic copolyamide stretched fiber core 4, and two PFA stretch-resistant core tubes 5, which are twisted together to form a cable core, wherein an outer diameter ratio of the power core 1 to the video core 3 is 1:1 to 1:0.95, an outer diameter of the control core 2 is not more than 85% of an outer diameter of the power core 1, the two PFA stretch-resistant core tubes 5 are located on two sides of the control core 2, and the power core 1 and the control core 2 are disposed between the para-type wholly aromatic copolyamide stretched fiber core 4 and the control core 2. The cable core is coated with a polyvinyl chloride extruded inner sheath 6, an AFRP reinforced wrapping layer 7 and a polyvinyl chloride extruded outer sheath 8 in sequence. In one embodiment, the AFRP reinforced wrapping layer 7 is a double-layer aramid fiber strand with different spiral angles and with a reverse spiral winding and weaving structure, and the diameter of the aramid fiber strand is 0.18mm to 0.35 mm.

The power cord core 1 comprises three insulated cord cores 11 and three PFA resin core strips 12 which are jointly twisted to form a power cord core body, the exterior of the power cord core body is coated with a butyronitrile polyvinyl chloride outer insulating layer 13, and the insulated cord cores 11 comprise power conductors 111, insulating lubricating silicone grease 112 and a crosslinked polyethylene insulating layer 113. Specifically, the power conductor 111 is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.02mm to 0.05 mm.

The control core 2 comprises two insulating twisted-pair wire cores 21 twisted in pairs and a control core body formed by the two polypropylene resin core strips 22, each insulating twisted-pair wire core 21 comprises a control conductor 211 and a silane grafted crosslinked low-density polyethylene insulating layer 212, and the control core body is coated with an iron powder polyethylene resin composite inner winding layer 23, a copper wire winding shielding layer 24 and an iron powder polyethylene resin composite inner and outer winding layer 25 in sequence. Specifically, the control conductor 211 is formed by twisting a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.04mm and a plurality of para-type wholly aromatic copolyamide drawn fiber bundles together. In one embodiment, the copper wire wound shielding layer 24 is formed by mixed unidirectional spiral winding of two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9 to 1, and the shielding density is 90 to 95 percent.

The video cable core 3 comprises an inner conductor 31, and a cross-linked fluororubber insulator 32, an iron powder polypropylene resin wrapping shielding layer 33, a shielding mesh conductor layer 34 and a PET resin extrusion layer 35 which are sequentially coated outside the inner conductor 31. Specifically, the inner conductor 31 is formed by twisting a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.04 mm. In one embodiment, the shielding mesh conductor layer 34 is formed by spirally winding an inner and an outer double-layer tinned wires in the same direction, the winding distance and the spiral angle degree of the inner layer tinned wire and the outer layer tinned wire are the same, the wire diameter of the inner layer tinned wire is 0.04mm to 0.08mm, the wire diameter of the outer layer tinned wire is 0.06mm to 0.12mm, and the wire diameter of the inner layer tinned wire is not more than 85% of the wire diameter of the outer layer tinned wire.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and 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 (10)

1. Stretch-proofing marine combination cable, characterized by: comprises a power core (1), a control core (2), a video core (3), a para-type wholly aromatic copolyamide tensile fiber core (4) and two PFA tensile core tubes (5) which are jointly twisted to form a cable core, the ratio of the outer diameters of the power core (1) and the video core (3) is 1:1 to 1:0.95, the outer diameter of the control wire core (2) is not more than 85 percent of the outer diameter of the power wire core (1), the two PFA stretch-proofing core tubes (5) are positioned at two sides of the control wire core (2), the power supply wire core (1) and the control wire core (2) are arranged between the para-type wholly aromatic copolyamide drawn fiber core strip (4) and the control wire core (2), the cable core is externally wrapped with a polyvinyl chloride extruded inner sheath (6), an AFRP reinforced wrapping layer (7) and a polyvinyl chloride extruded outer sheath (8) in sequence.

2. The stretch resistant marine combination cable of claim 1, wherein: the power cord core (1) comprises three insulated cord cores (11) and three PFA resin core strips (12) which are jointly stranded to form a power cord core body, the power cord core body is externally coated with a butyronitrile polyvinyl chloride outer insulating layer (13), and the insulated cord cores (11) comprise a power conductor (111), an insulating lubricating silicone grease (112) and a cross-linked polyethylene insulating layer (113).

3. The stretch resistant marine combination cable of claim 2, wherein: the power supply conductor (111) is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameters of 0.02mm to 0.05 mm.

4. The stretch resistant marine combination cable of claim 1, wherein: control sinle silk (2) include two insulation pair twist sinle silks (21) pair twist and constitute the control line core jointly with two polypropylene resin core strips (22), insulation pair twist sinle silk (21) include control conductor (211) and silane grafting crosslinking low density polyethylene insulating layer (212), the outside cladding in proper order of control line core has iron powder polyethylene resin compound inner winding layer (23), copper wire winding shielding layer (24) and iron powder polyethylene resin compound inner and outer winding layer (25).

5. The stretch resistant marine combination cable of claim 4, wherein: the control conductor (211) is formed by jointly twisting a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.04mm and a plurality of para-type wholly aromatic copolyamide drawn fiber bundles.

6. The stretch resistant marine combination cable of claim 4, wherein: the copper wire winding shielding layer (24) is formed by mixing and spirally winding two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1, and the shielding density is 90-95%.

7. The stretch resistant marine combination cable of claim 1, wherein: AFRP strengthens for double-deck aramid fiber strand each other for reverse spiral winding braid structure and spiral angle different around covering (7), aramid fiber strand line footpath is 0.18mm to 0.35 mm.

8. The stretch resistant marine combination cable of claim 1, wherein: the video cable core (3) comprises an inner conductor (31) and a cross-linked fluororubber insulator (32), an iron powder polypropylene resin wrapping shielding layer (33), a shielding mesh conductor layer (34) and a PET resin extruding layer (35) which are sequentially coated outside the inner conductor (31).

9. The stretch resistant marine combination cable of claim 8, wherein: the inner conductor (31) is formed by stranding a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.04 mm.

10. The stretch resistant marine combination cable of claim 8, wherein: shielding mesh conductor layer (34) forms for inside and outside double-deck tinned wire syntropy spiral winding, and inner layer tinned wire is the same with outer tinned wire around the distance and spiral angle degree, inner layer tinned wire line footpath is 0.04mm to 0.08mm, outer tinned wire line footpath is 0.06mm to 0.12mm, inner layer tinned wire line footpath is no more than the 85% in outer tinned wire line footpath.

Images