CN217933268U

CN217933268U - Double-strand parallel digital communication cable for ships

Info

Publication number: CN217933268U
Application number: CN202221657833.1U
Authority: CN
Inventors: 王子纯; 吴荣美; 唐秀芹; 韩桂萍
Original assignee: Jiangsu Dongqiang Co Ltd
Current assignee: Jiangsu Dongqiang Co Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-11-29
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a naval vessel is with double-stranded parallel digital communication cable, including the subunit cable core, the subunit cable core includes conductor, insulating sheath, shielding band, interior braided shield, interior flame retardant sheath, outer braided shield and outer flame retardant sheath, the extruded cladding of insulating sheath is outside the conductor and forms the insulated wire core, two the insulated wire core twists each other and forms a set of insulating pair twist group, shielding band winding cladding is outside insulating pair twist group and forms the shielding child line, interior braided shield is woven the cladding outside four shielding child lines, interior flame retardant sheath is extruded the cladding outside interior braided shield, the cladding is woven outside interior flame retardant sheath to outer braided shield, outer flame retardant sheath is extruded the cladding and is woven outside the shielding sheath, two subunit cable core looks parallel arrangement and outer flame retardant sheath interconnect can realize that the double letter passageway lays, reduces installation cost and lays the space, very is applicable to naval vessel wiring system.

Description

Double-strand parallel digital communication cable for ships

[ technical field ] A

The utility model relates to a technical field of cable, especially a naval vessel are with double-stranded parallel type digital communication cable's technical field.

[ background of the invention ]

The communication cable refers to a cable for audio communication at a short distance and high frequency carrier, digital communication and signal transmission at a long distance, and is generally applied to intelligent buildings, data centers, 5G communication network centers and the like. With the improvement of the automation degree of modern ships, various network systems are applied to the ships more and more, so that the communication cables are distributed over the whole ship body just like human blood vessels and nerves, and the functions of signal control, communication contact and the like are carried out, so that the normal operation of the ships is ensured. However, the space on the ship is usually very limited, and the huge number of communication cables not only occupy a large amount of valuable space, but also need to be installed one by one, which is very troublesome.

[ Utility model ] A method for manufacturing a semiconductor device

The utility model aims at solving the problem among the prior art, providing a naval vessel is with double-stranded run-in digital communication cable, can realize that the double letter passageway lays, reduce installation cost and lay the space, very be applicable to naval vessel wiring system.

For realizing the above-mentioned purpose, the utility model provides a naval vessel is with double-stranded parallel digital communication cable, including the subunit cable core, the subunit cable core includes conductor, insulating sheath, shielding band, interior braided shield, interior flame retardant sheath, outer braided shield and outer flame retardant sheath, the extruded cladding of insulating sheath is outside the conductor and forms the insulated wire core, two the insulated wire core twists each other and forms a set of insulating pair twist group, shielding band winding cladding is outside insulating pair twist group and form the shielding child line, interior braided shield is woven the cladding outside four shielding child lines, interior flame retardant sheath is extruded the cladding outside interior braided shield, the cladding is woven outside interior flame retardant sheath to outer braided shield, the extruded cladding of outer flame retardant sheath is outside outer braided shield, two subunit cable core looks parallel arrangement and outer flame retardant sheath interconnect.

Preferably, the elongation of the conductor is 24 to 28%.

Preferably, the thickness of the insulating sleeve is 0.2-0.6 mm, the ellipticity of the insulating sleeve is less than or equal to 0.005mm, the insulating sleeve comprises an inner skin layer, a foaming layer and an outer skin layer which are sequentially arranged from inside to outside, the thickness of the inner skin layer is 0.01-0.03 mm, the foaming degree of the foaming layer is less than or equal to 55%, and the thickness of the outer skin layer is 0.05-0.15 mm.

Preferably, the shielding tape is a single-sided aluminum foil tape, the thickness of the single-sided aluminum foil tape is more than or equal to 0.042mm, and the coating overlapping rate of the single-sided aluminum foil tape is more than or equal to 20%.

Preferably, the inner braided shield sleeve is a tinned copper wire braided sleeve, the braiding density of the tinned copper wire braided sleeve is not less than 65%, and the diameter of a tinned copper wire of the tinned copper wire braided sleeve is 0.05-0.15 mm.

Preferably, the inner flame-retardant sheath is a low-smoke halogen-free flame-retardant polyolefin sheath, the thickness of the inner flame-retardant sheath is 0.4-0.8 mm, and the oxygen index of the inner flame-retardant sheath is not less than 48.

Preferably, the outer braided shield sleeve is a tinned copper wire braided sleeve, the braiding density of the tinned copper wire braided sleeve is more than or equal to 85%, and the diameter of a tinned copper wire of the tinned copper wire braided sleeve is 0.05-0.15 mm.

Preferably, the outer flame-retardant sheath is a low-smoke halogen-free flame-retardant polyolefin sheath, the thickness of the outer flame-retardant sheath is 0.5-0.9 mm, and the oxygen index of the outer flame-retardant sheath is not less than 48.

The utility model has the advantages that:

the utility model discloses can cooperate the extrusion molding mould, form double-strand parallel cable with two independent 8 cores 4 to the parallel structural design of multilayer subunit cable core, not only have higher transmission performance, anti-electromagnetic interference and fire resistance, still can realize the double letter passageway and lay, reduce installation cost and lay the space, very be applicable to naval vessel wiring system; the shielding wrapping bands are respectively wound and wrapped outside each group of insulating twisted pair groups, and meanwhile, the inner braided shielding sleeve with the braiding density not less than 65% and the outer braided shielding sleeve with the braiding density not less than 80% are additionally arranged outside the four shielding sub-lines, so that the internal and external interference resistance of the cable is effectively enhanced, the inner braided shielding sleeve and the outer braided shielding sleeve not only have higher electromagnetic interference resistance, but also can ensure that the transmission performance of the cable is not changed under the condition of minimum bending to the greatest extent, and the product structure is stabilized; the cable achieves the A-type bundled combustion performance of supplying fire and combusting for 40min, the nonmetal content is 7L/m and the carbonization height is less than 2.5m by additionally arranging the low-smoke halogen-free flame-retardant polyolefin sleeve outside the four shielding sub-lines as an inner flame-retardant sheath and an outer flame-retardant sheath, so that the cable can still continuously transmit high-frequency transmission within a certain time after being combusted; the two independent subunit cable cores are respectively twisted by adopting different pair-twisting pitch combinations, so that the requirement of high-frequency crosstalk transmission performance is met; by optimizing the structural design of the two independent subunit cable cores, the structural parameters are reasonably set, so that the attenuation is reduced, and the fluctuation range of characteristic impedance and return loss is reduced.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic cross-sectional view of a duplex parallel digital communication cable for ships and warships of the present invention;

fig. 2 is a schematic diagram of the connection between the conductor and the insulating sheath of the duplex parallel digital communication cable for ships.

In the figure: 1-conductor, 2-insulating sleeve, 21-inner skin layer, 22-foaming layer, 23-outer skin layer, 3-shielding wrapping tape, 4-inner braided shielding sleeve, 5-inner flame-retardant sheath, outer braided shielding sleeve and 7-outer flame-retardant sheath.

[ detailed description ] A

Referring to fig. 1 and 2, the utility model relates to a naval vessel is with double-stranded parallel digital communication cable, including the subunit cable core, the subunit cable core includes conductor 1, insulating cover 2, shielding band 3, interior braided shield 4, interior flame retardant sheath 5, outer braided shield 6 and outer flame retardant sheath 7, 2 extrusion cladding of insulating cover are outside conductor 1 and form the insulated wire core, two the insulated wire core twists each other and forms a set of insulating pair twist group, 3 winding claddings of shielding band are outside insulating pair twist group and form the shielding child line, interior braided shield 4 is woven the cladding outside four shielding child lines, interior flame retardant sheath 5 extrusion cladding is outside interior braided shield 4, outer braided shield 6 is woven the cladding outside flame retardant sheath 5, outer flame retardant sheath 7 extrusion cladding is outside outer braided shield 6, two subunit cable core parallel arrangement and outer flame retardant sheath 7 interconnect. In addition, the colors of 8 groups of insulated wire cores of each subunit cable core are respectively white (blue), white (orange), white (green), white (brown), blue, orange, green and brown, 8 groups of insulated wire cores need to be twisted according to a certain regular color sequence, the pitch combination of 4 insulated pair twist groups (the twist pitch is controlled within 70 +/-5 mm) is further optimized by adopting different twist group pitches according to the principle that the pitch reciprocal difference gap is relatively large and the pitch balance joint principle, the paying-off tension of two single wires of the insulated pair twist groups needs to be adjusted well in the production process, the stability and the uniformity of the paying-off tension of the two single wires of the insulated pair twist groups are guaranteed, and the structural symmetry performance of the insulated pair twist group is better.

The elongation of the conductor 1 was 26%. Wherein, a TR type 23AWG soft round wire is used as the conductor 1.

The thickness of insulating cover 2 is 0.38 +/-0.02 mm, the ellipticity of insulating cover 2 is less than or equal to 0.005mm, insulating cover 2 includes from interior to outer endotheca layer 21, foaming layer 22 and the exocuticle layer 23 that sets gradually, the thickness of endotheca layer 21 is 0.02mm, the degree of foaming on foaming layer 22 is less than or equal to 55%, the thickness of exocuticle layer 23 is 0.1mm. Wherein, the insulation eccentricity of the insulation sleeve 2 reaches more than 97%.

The shielding tape 3 is a single-side aluminum foil tape, the thickness of the single-side aluminum foil tape is more than or equal to 0.042mm, and the coating overlapping rate of the single-side aluminum foil tape is more than or equal to 25%. Four wire cores of the two subunit cable cores are independently coated by single-sided aluminum foil tapes at the same angle of 120 degrees in the same direction, and the tension in the coating process needs to be uniform.

The inner braided shield sleeve 4 is a tinned copper wire braided sleeve, the braiding density of the tinned copper wire braided sleeve is not less than 65%, and the diameter of a tinned copper wire of the tinned copper wire braided sleeve is 0.1mm. Wherein, the number of the tinned copper wires of the tinned copper wire braided sleeve is 128.

The inner flame-retardant jacket 5 is a low-smoke halogen-free flame-retardant polyolefin jacket, the thickness of the inner flame-retardant jacket 5 is 0.6mm, and the oxygen index of the inner flame-retardant jacket 5 is not less than 48.

The outer braided shielding sleeve 6 is a tinned wire braided sleeve, the braiding density of the tinned wire braided sleeve is not less than 85%, and the diameter of a tinned wire of the tinned wire braided sleeve is 0.1mm. Wherein, the number of the tinned copper wires of the tinned copper wire braided sleeve is 160.

The outer flame-retardant sheath 7 is a low-smoke halogen-free flame-retardant polyolefin sheath, the thickness of the outer flame-retardant sheath 7 is 0.7mm, and the oxygen index of the outer flame-retardant sheath 7 is not less than 48.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. The utility model provides a naval vessel is with double-stranded parallel form digital communication cable which characterized in that: the cable comprises a subunit cable core, the subunit cable core comprises a conductor (1), an insulating sleeve (2), a shielding belting (3), an inner braided shielding sleeve (4), an inner flame-retardant sheath (5), an outer braided shielding sleeve (6) and an outer flame-retardant sheath (7), the insulating sleeve (2) is extruded to wrap the outside of the conductor (1) and form insulating cable cores, the two insulating cable cores are twisted with each other and form a group of insulating pair-twisted group, the shielding belting (3) is wound to wrap the outside of the insulating pair-twisted group and form shielding sub-lines, the inner braided shielding sleeve (4) is woven to wrap the outside of four shielding sub-lines, the inner flame-retardant sheath (5) is extruded to wrap the outside of the inner braided shielding sleeve (4), the outer braided shielding sleeve (6) is woven to wrap the outside of the inner flame-retardant sheath (5), the outer flame-retardant sheath (7) is extruded to wrap the outside of the outer braided shielding sleeve (6), and the subunit cable core is arranged and the outer flame-retardant sheath (7) is connected in parallel.

2. The duplex parallel digital communication cable for ships and warships of claim 1, wherein: the elongation of the conductor (1) is 24 to 28%.

3. The duplex parallel digital communication cable for ships and warships of claim 1, characterized in that: the thickness of insulating cover (2) is 0.2 ~ 0.6mm, the ellipticity of insulating cover (2) is less than or equal to 0.005mm, insulating cover (2) include from interior to outer endotheca layer (21), foaming layer (22) and ectotheca (23) that set gradually, the thickness of endotheca layer (21) is 0.01 ~ 0.03mm, the degree of foaming layer (22) is less than or equal to 55%, the thickness of ectotheca (23) is 0.05 ~ 0.15mm.

4. The duplex parallel digital communication cable for ships and warships of claim 1, wherein: the shielding wrapping tape (3) is a single-side aluminum foil tape, the thickness of the single-side aluminum foil tape is more than or equal to 0.042mm, and the wrapping overlapping rate of the single-side aluminum foil tape is more than or equal to 20%.

5. The duplex parallel digital communication cable for ships and warships of claim 1, characterized in that: the inner braided shielding sleeve (4) is a tinned copper wire braided sleeve, the braiding density of the tinned copper wire braided sleeve is more than or equal to 65%, and the diameter of a tinned copper wire of the tinned copper wire braided sleeve is 0.05-0.15 mm.

6. The duplex parallel digital communication cable for ships and warships of claim 1, wherein: the inner flame-retardant jacket (5) is a low-smoke halogen-free flame-retardant polyolefin jacket, the thickness of the inner flame-retardant jacket (5) is 0.4-0.8 mm, and the oxygen index of the inner flame-retardant jacket (5) is not less than 48.

7. The duplex parallel digital communication cable for ships and warships of claim 1, wherein: the outer braided shielding sleeve (6) is a tinned copper wire braided sleeve, the braiding density of the tinned copper wire braided sleeve is more than or equal to 85%, and the diameter of a tinned copper wire of the tinned copper wire braided sleeve is 0.05-0.15 mm.

8. The duplex parallel digital communication cable for ships and warships of claim 1, characterized in that: the outer flame-retardant jacket (7) is a low-smoke halogen-free flame-retardant polyolefin jacket, the thickness of the outer flame-retardant jacket (7) is 0.5-0.9 mm, and the oxygen index of the outer flame-retardant jacket (7) is not less than 48.