CN220420333U

CN220420333U - Communication cable for ship

Info

Publication number: CN220420333U
Application number: CN202321917512.5U
Authority: CN
Inventors: 蒋志远; 李坤朋; 王少祥; 曹磊; 花鹏程; 舒鑫杰; 周洪鹏; 赵瑞静; 徐宗铭
Original assignee: Zhongtian Radio Frequency Cable Co ltd
Current assignee: Zhongtian Radio Frequency Cable Co ltd
Priority date: 2023-07-19
Filing date: 2023-07-19
Publication date: 2024-01-30
Anticipated expiration: 2033-07-19

Abstract

The application provides a communication cable for ships, which comprises a protective layer and a plurality of cable cores, wherein the protective layer is sleeved outside the cable cores; each cable core comprises a conductor and a shielding layer sleeved outside the sleeve body, wherein the shielding layer comprises a PET layer, a graphene layer and a metal layer, and the graphene layer is positioned between the PET layer and the metal layer. The shielding property and the bending property of the communication cable for the ship are good.

Description

Communication cable for ship

Technical Field

The application relates to the technical field of communication cables, in particular to a communication cable for ships.

Background

With the rapid development of shipbuilding industry, the demand for communication cables for ships is also rapidly increasing.

The communication cable for a ship is widely used for communication navigation or signal transmission of ships and marine engineering equipment. Since the ship needs to operate offshore, the shielding performance of the ship communication cable when transmitting signals is required to be high. The space on the ship is relatively narrow, and the space available for wiring is also relatively small, so that the bending requirement of the ship cable is relatively high. The shielding layer of current communication cable includes plastic-aluminum composite tape and tinned copper wire weaving layer, and the thickness of shielding layer is great and the shielding effect of shielding layer is relatively poor.

Therefore, in the related art, the shielding property and bending property of the communication cable are poor, and it is difficult to meet the use requirement of ship communication.

Disclosure of Invention

The application provides a communication cable for ships, the shielding property and the bending property of the communication cable for ships are better.

The application provides a communication cable for ships, which comprises a protective layer and a plurality of cable cores, wherein the protective layer is sleeved outside the cable cores; each cable core comprises a conductor and a shielding layer sleeved outside the sleeve body, wherein the shielding layer comprises a PET layer, a graphene layer and a metal layer, and the graphene layer is positioned between the PET layer and the metal layer.

In one possible embodiment, the marine communication cable provided by the application has an interface on the shielding layer, and the interfaces on the shielding layers face the protective layer and are abutted with the inner ring of the protective layer.

In one possible embodiment, the marine communication cable provided herein has a PET layer thickness of 10-20 μm; the thickness of the graphene layer is 10-20 mu m; the thickness of the metal layer is 5-10 μm.

In one possible embodiment, the marine communication cable provided in the present application further includes a drain line, where the drain line is located in the middle of an area surrounded by the plurality of cable cores;

the metal layer in each shielding layer is positioned at the outermost side of the shielding layer, and the metal layer in each shielding layer is contacted with the drain line.

In one possible embodiment, the marine communication cable provided by the application, the conductor comprises two wires twisted in pairs, and the outer sides of the two wires are provided with insulating layers.

In one possible embodiment, the marine communication cable provided herein has two wires in each cable core with a lay length of 22-28mm.

In one possible embodiment, the marine communication cable provided herein has a plurality of cable cores with a lay length of 90-110mm.

In one possible embodiment, the marine communication cable provided herein includes an inner jacket, an armor layer, and an outer jacket that are sequentially stacked.

In one possible embodiment, the marine communication cable provided herein has an inner sheath made of PP.

In one possible embodiment, the communication cable for the ship provided by the application, the outer sheath is made of flame retardant polyolefin material or mud irradiation-resistant crosslinked polyolefin material.

The application provides a communication cable for ships, which is characterized in that a protective layer and a plurality of cable cores are arranged, and the protective layer is sleeved outside the cable cores; each cable core comprises a conductor and a shielding layer sleeved outside the conductor, wherein the shielding layer comprises a PET layer, a graphene layer and a metal layer, and the graphene layer is positioned between the PET layer and the metal layer. The graphene layer has good shielding performance, the graphene layer is in direct contact with the metal layer, electromagnetic waves absorbed by the graphene layer can be directly led out through the metal layer, and the shielding performance of the shielding layer is further improved. The graphene layer is located between the PET layer and the metal layer, the PET layer and the metal layer can protect the graphene layer, the bending property of the graphene layer is improved, the PET layer has good toughness, the metal layer has certain strength and toughness, and the shielding layer formed by the PET layer, the graphene layer and the metal layer has good bending property as a whole by utilizing the toughness of the PET layer and the strength and toughness of the metal layer.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a marine communication cable according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a marine communication cable according to an embodiment of the present disclosure;

fig. 3 is an expanded schematic view of a shielding layer in a marine communication cable according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram III of a marine communication cable according to an embodiment of the present application.

Reference numerals illustrate:

100-communication cable for ship;

110-a protective layer;

111-an inner sheath;

112-armor;

113-an outer sheath;

120-cable core;

121-conductors; 1211-a wire; 1212-an insulating layer;

122-a shielding layer;

122 a-a first shielding layer;

122 b-a second shielding layer;

122 c-a third shielding layer;

122 d-a fourth shielding layer;

1221-a PET layer; 1222-a graphene layer; 1223-metal layer;

1224-interface; 1224 a-first interface; 1224 b-a second interface; 1224 c-third interface; 1224 d-fourth interface;

130-a drain line;

d1—a first thickness;

d2—a second thickness;

d3—a third thickness.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be fixedly connected, or indirectly connected through intermediaries, for example, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are therefore not to be construed as limiting the present application.

The terms "first," "second," "third" (if any) in the description and claims of the present application and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of operation in sequences other than those illustrated or described herein, for example.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or maintenance tool that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or maintenance tool.

The communication cable for a ship is widely used for communication navigation or signal transmission of ships and marine engineering equipment. Since the marine communication cable has a long transmission distance because the marine vessel needs to be operated offshore for a long period of time, the marine communication cable has a relatively high shielding property when transmitting signals.

The space on the ship is narrow, the space available for wiring is also small, and a communication cable is required to run according to the space layout in the ship during wiring, so that the bending requirement of the ship cable is high.

In the related art, the shielding layer of the communication cable comprises an aluminum-plastic composite belt and a tinned copper wire weaving layer, wherein the aluminum-plastic composite belt is a base material, and the tinned copper wire weaving layer can play a shielding role. The overall thickness of the shielding layer formed by the aluminum-plastic composite belt and the tinned copper wire weaving layer is large, so that the overall bending property of the communication cable is poor, and wiring in a limited space of a ship is inconvenient. The shielding effect of the tinned copper wire braid is poor, and the requirements of the communication cable for ships are difficult to meet.

Accordingly, the present application provides a marine communication cable which is excellent in shielding property and bending property.

Fig. 1 is a schematic structural diagram of a marine communication cable according to an embodiment of the present disclosure.

Referring to fig. 1, the marine communication cable 100 provided in the present application includes a protective layer 110 and a plurality of cable cores 120, where the protective layer 110 is sleeved outside the plurality of cable cores 120; each cable core 120 includes a conductor 121 and a shielding layer 122 sleeved outside the conductor 121, the shielding layer 122 includes a PET layer 1221, a graphene layer 1222, and a metal layer 1223, and the graphene layer 1222 is located between the PET layer 1221 and the metal layer 1223.

The marine communication cable 100 may be a seven-type or eight-type network cable, or may be another type of communication cable. In this embodiment, the marine communication cable 100 includes four cable cores 120 and the protective layer 110 covering the outer sides of the four cable cores 120, and the protective layer 110 can support and protect the cable cores 120.

The conductor 121 in the cable core 120 is used for transmitting signals, and the conductor 121 is a copper conductor. Electromagnetic waves generated when the conductors 121 transmit signals interfere with other conductors 121, so that shielding layers 122 need to be wrapped around the outer sides of the conductors 121 to isolate the conductors 121 from each other, so as to avoid mutual interference when the respective cable cores 120 of the marine communication cable 100 transmit signals.

With continued reference to fig. 1, in the present embodiment, the shielding layer 122 includes a PET layer 1221, a graphene layer 1222, and a metal layer 1223, wherein the graphene layer 1222 is located between the PET layer 1221 and the metal layer 1223.

Specifically, PET layer 1221 is the matrix of shield layer 122. The graphene is coated on the PET layer 1221 to form a graphene layer 1222, and the graphene has high conductivity and high dielectric constant, so that dielectric loss is high when electromagnetic waves pass through the graphene, and therefore, the shielding effect of the graphene layer 1222 formed by the graphene is good.

The metal layer 1223 may be made of metal copper, and in this embodiment, the metal layer 1223 is in direct contact with the graphene layer 1222, and electromagnetic waves absorbed by the graphene layer 1222 may be directly led out through the metal layer 1223, so that the shielding effect of the graphene layer 1222 may be further increased, so that the shielding layer 122 has a better shielding effect as a whole.

The graphene layer 1222 is located between the PET layer 1221 and the metal layer 1223, that is, one side of the graphene layer 1222 is supported by the PET layer 1221, the other side of the graphene layer 1222 is supported by the metal layer 1223, and the PET layer 1221 and the metal layer 1223 can provide support and protection for the graphene layer 1222 during the laying process of the marine communication cable 100, so as to avoid the damage of the graphene layer 1222 due to bending.

The PET layer 1221 has better toughness, the metal layer 1223 has certain strength and toughness, and the three-layer structure of the PET layer 1221, the graphene layer 1222 and the metal layer 1223 has better bending property as a whole by using the toughness of the PET layer 1221 and the strength and toughness of the metal layer 1223.

The bending experiment is performed on the marine communication cable 100 provided in the embodiment of the present application, where after the number of bending times of the marine communication cable 100 provided in the embodiment of the present application is greater than or equal to 10000, the shielding layer 122 is still not damaged, and the bending angle of each time is 80 ° -110 °.

According to the marine communication cable 100 provided by the embodiment of the application, the protective layer 110 and the plurality of cable cores 120 are arranged, and the protective layer 110 is sleeved outside the plurality of cable cores 120; each cable core 120 includes a conductor 121 and a shielding layer 122 sleeved outside the conductor 121, the shielding layer 122 includes a PET layer 1221, a graphene layer 1222, and a metal layer 1223, and the graphene layer 1222 is located between the PET layer 1221 and the metal layer 1223. The graphene layer 1222 has better shielding performance, the graphene layer 1222 is in direct contact with the metal layer 1223, electromagnetic waves absorbed by the graphene layer 1222 can be directly led out through the metal layer 1223, and shielding performance of the shielding layer 122 is further improved. The graphene layer 1222 is located between the PET layer 1221 and the metal layer 1223, the PET layer 1221 and the metal layer 1223 can protect the graphene layer 1222, bending property of the graphene layer 1222 is improved, the PET layer 1221 has better toughness, the metal layer 1223 has certain strength and toughness, and the shielding layer 122 formed by the PET layer 1221, the graphene layer 1222 and the metal layer 1223 has better bending property as a whole by using the toughness of the PET layer 1221 and the strength and toughness of the metal layer 1223.

Fig. 2 is a schematic structural diagram of a marine communication cable according to an embodiment of the present disclosure; fig. 3 is an expanded schematic view of a shielding layer in a marine communication cable according to an embodiment of the present application.

Referring to fig. 2, the shielding layer 122 has interfaces 1224 thereon, and the interfaces 1224 on the shielding layers 122 face the protective layer 110 and are abutted against the inner ring of the protective layer 110.

Specifically, referring to fig. 3, the shielding layer 122 is rectangular before being wound around the conductor 121, and when the shielding layer 122 is wrapped around the conductor 121, the opposite sides of the shielding layer 122 form the interfaces 1224. The shielding layers 122 on the four conductors 121 are respectively referred to as a first shielding layer 122a, a second shielding layer 122b, a third shielding layer 122c and a fourth shielding layer 122d, the interfaces 1224 on the first shielding layer 122a are a first interface 1224a, the interfaces 1224 on the second shielding layer 122b are a second interface 1224b, the interfaces 1224 on the third shielding layer 122c are a third interface 1224c, and the interfaces 1224 on the fourth shielding layer 122d are a fourth interface 1224d.

Any two interfaces 1224 of the first interface 1224a, the second interface 1224b, the third interface 1224c and the fourth interface 1224d deviate from each other, whereby it is avoided that a signal transmitted in one of the conductors 121 enters the other conductor 121 via the interface 1224 and interferes with the signal transmission in the other conductor 121.

The first interface 1224a, the second interface 1224b, the third interface 1224c, and the fourth interface 1224d are all abutted to the protection layer 110, and the protection layer 110 applies pressure on the four interfaces 1224, so that the interfaces 1224 can be compressed, and further, signals are prevented from leaking from the interfaces 1224.

With continued reference to FIG. 3, in this embodiment, the PET layer 1221 has a thickness of 10-20 μm; the thickness of the graphene layer 1222 is 10-20 μm; the thickness of the metal layer 1223 is 5 to 10 μm.

The thickness of the PET layer 1221 is a first thickness D1, the thickness of the graphene layer 1222 is a second thickness D2, and the thickness of the metal layer 1223 is a third thickness D3. The shielding layer 122 of the marine communication cable 100 provided in the embodiment of the present application is of a three-layer laminated structure, so that the first thickness D1, the second thickness D2 and the third thickness D3 can meet the requirement of the shielding layer 122 on double bending property without being too thick.

In addition, the PET layer 1221 is a supporting substrate, and thus, the first thickness D1 is greater than or equal to 10 μm; when the graphene layer 1222 is too thin, the shielding effect of the shielding layer 122 is affected, and therefore, the second thickness D2 is also greater than or equal to 10 μm; the third thickness D3 is 5 μm or more to satisfy the requirement of the shielding layer 122.

Therefore, the thickness of the shielding layer 122 as a whole is 25 to 50 μm, and the diameter of the marine communication cable 100 using the shielding layer 122 is 7.8±3mm. Compared to the shielding layer formed by the aluminum-plastic composite tape and the tinned copper wire braid in the related art (in the related art, the diameter of the communication cable is 8.5±3 mm), the communication cable 100 for the ship provided in the embodiment of the application has smaller diameter and lighter weight, thereby being more convenient to lay in the ship.

Referring to fig. 4, on the basis of the embodiment shown in fig. 2, the marine communication cable 100 further includes a drain line 130, and the drain line 130 is located in the middle of an area surrounded by the plurality of cable cores 120; the metal layer 1223 in each shield layer 122 is located at the outermost side of the shield layer 122, and the metal layer 1223 in each shield layer 122 is in contact with the drain line 130.

The drain wire 130 serves to drain electromagnetic waves absorbed by the shielding layer 122 to the ground. In the present embodiment, the drain wire 130 is located at the center of the marine communication cable 100. In each shielding layer 122, the PET layer 1221, the graphene layer 1222, and the metal layer 1223 are sequentially arranged from inside to outside from the center of the cable core 120, that is, the metal layer 1223 is located at the outermost side of the cable core 120. The drain line 130 is made tangential to the metal layer of each shield layer 122, and the metal layer 1223 in each shield layer 122 is in communication with the drain line 130. Thus, by providing one drain wire 130, electromagnetic waves absorbed by the shielding layers 122 of all the cable cores 120 can be collected, and the diameter of the marine communication cable 100 can be further reduced.

With continued reference to fig. 1, 2 and 4, the conductor 121 includes two wires 1211 twisted in pairs, and an insulating layer 1212 is disposed outside of each of the wires 1211.

The twisted wires 1211 have advantages of long transmission distance and high transmission quality, and it should be noted that the outer side of each wire 1211 is covered with an insulating layer 1212, and the insulating layer 1212 plays an insulating role between the twisted wires 1211.

In the related art, the lay length of the two wires in each core 120 is set to about 15 mm.

In the marine communication cable 100 provided in the embodiment of the present application, the lay length of the two wires 1211 in each cable core 120 is set to 22-28mm. Increasing the lay length of the conductors 1211 in each cable core 120 may reduce attenuation during signal transmission to increase signal transmission distance.

In the related art, the lay lengths of the plurality of cable cores 120 are set to about 60 mm.

In the marine communication cable 100 provided in the embodiment of the present application, the pitches of the plurality of cable cores 120 are 90 to 110mm. Increasing the lay length of the plurality of cable cores 120 may also reduce attenuation during signal transmission to increase signal transmission distance.

By increasing the lay length of the wire 1211 in each core 120 and the lay lengths of the plurality of cores 120, the signal transmission distance can be increased from 30m to 35m.

Next, a specific structure of the protective layer 110 will be described.

With continued reference to fig. 1, 2 and 4, the protective layer 110 includes an inner jacket 111, an armor layer 112 and an outer jacket 113 that are sequentially stacked.

The inner sheath 111 abuts against the shielding layer 122 of the cable core 120, and the inner sheath 111 compresses the shielding layer 122 to protect the cable core 120.

In this embodiment, the inner sheath 111 is made of PP. Specifically, the inner sheath 111 is made of PP (Polypropylene), and the PP material has heat resistance and strength superior to those of PE (polyethylene). The space on the ship is narrow and the heat dissipation is poor, so that the PP material is more suitable for the application field of the ship.

The armor layer 112 is a coating of metal tape and wires that protects the cable core 120 from external mechanical forces.

In this embodiment, the outer sheath 113 is made of flame retardant polyolefin or crosslinked polyolefin resistant to irradiation with slurry. The flame-retardant polyolefin material or the slurry irradiation-resistant crosslinked polyolefin material has good heat resistance and flame resistance, and is more suitable for the application field of ships.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The marine communication cable is characterized by comprising a protective layer and a plurality of cable cores, wherein the protective layer is sleeved outside the cable cores; each cable core comprises a conductor and a shielding layer sleeved outside the sleeve body, wherein the shielding layer comprises a PET layer, a graphene layer and a metal layer, and the graphene layer is positioned between the PET layer and the metal layer.

2. The marine communication cable of claim 1, wherein the shield layer has an interface thereon, the interfaces on a plurality of the shield layers each facing the shield layer and abutting an inner ring of the shield layer.

3. The marine communication cable of claim 2 wherein the PET layer has a thickness of 10-20 μιη; the thickness of the graphene layer is 10-20 mu m; the thickness of the metal layer is 5-10 mu m.

4. A marine communication cable according to claim 3, further comprising a drain line located in the middle of an area surrounded by a plurality of the cable cores;

the metal layer in each shielding layer is located at the outermost side of the shielding layer, and the metal layer in each shielding layer is in contact with the drain line.

5. The marine communication cable of any one of claims 1 to 4, wherein the conductor includes two wires twisted in pairs, both of the wires being provided with an insulating layer on an outer side thereof.

6. The marine communication cable of claim 5 wherein the two wires in each of the cable cores have a lay length of 22-28mm.

7. The marine communication cable of any one of claims 1 to 4, wherein the plurality of the cable cores have a lay length of 90 to 110mm.

8. The marine communication cable of any one of claims 1 to 4, wherein the protective layer includes an inner sheath, an armor layer, and an outer sheath, which are sequentially stacked.

9. The marine communication cable of claim 8 wherein the inner jacket is PP.

10. The marine communication cable of claim 8 wherein the outer jacket is a flame retardant polyolefin material or a mud irradiation cross-linked polyolefin material.