CN216902347U

CN216902347U - Four-core coaxial high-speed data transmission cable for aerospace

Info

Publication number: CN216902347U
Application number: CN202123090172.7U
Authority: CN
Inventors: 张帆
Original assignee: Shenzhen Generation Henghui Cable Technology Co ltd
Current assignee: Shenzhen Generation Henghui Cable Technology Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-07-05
Anticipated expiration: 2031-12-10

Abstract

The utility model relates to a four-core coaxial high-speed data transmission cable for aerospace, which comprises a cable body and a cable conductor, wherein a tensile steel wire is fixedly installed inside the cable body, a hybrid braided grounding conductor is fixedly installed inside the cable body, and ethylene propylene diene monomer rubber is filled inside a mica tape winding layer. This coaxial high-speed data transmission cable of four-core for aerospace, weave ground conductor through setting up the mixture, weave ground conductor through the surface parcel mixture at the conductor, not only can not influence the propagation of signal of telecommunication, the heat resistance is good simultaneously, good bending resistance can have, and thermal-resistant oxygen is ageing-resistant, there is not obvious melting point, and set up the second glass silk weaving layer and can not only carry out fine protection to tin-plated copper conductor, can play adiabatic heat retaining effect simultaneously, ethylene propylene diene monomer has excellent heat resistance, cold resistance, the dielectricity, ozone resistance and excellent performance such as resistant atmospheric aging.

Description

Four-core coaxial high-speed data transmission cable for aerospace

Technical Field

The utility model relates to the technical field of transmission cables, in particular to a four-core coaxial high-speed data transmission cable for aerospace.

Background

With the rapid development of optical communication technology, optical cables are commonly used in backbone networks and inter-office relay lines of wired communication networks in China, and the trend that optical fibers enter access networks is inevitable. However, the optical cable laying cost is too high, the joint cost and the terminal optical-electric conversion cost are expensive, therefore, in a long period of time before the optical fiber popularization, the subscriber line of the access network still mainly uses the metal cable, the metal cable mainly comprises three types of full-plastic cables, coaxial cables and data cables, wherein, the data cable is an ideal transmission medium of the broadband access network at present, the data cable has the advantages of lower manufacturing cost, simple structure, good expandability and convenient network upgrade, and is mainly used for building comprehensive wiring, cell computer comprehensive wiring and the like.

Because a large amount of electronic equipment for aerospace is independently developed and produced in China, the requirement for the domestic production of aerospace high-temperature-resistant cables is met, and meanwhile, higher high-temperature-resistant, electric and environment-resistant requirements are provided for the cables, the high-temperature-resistant cables commonly used at present generally adopt high-temperature plastic insulating material combined sheaths, and the high-temperature resistance can only be about 200 ℃, so that the high-temperature-resistant cables have the defects of short service life, low electric conductivity, poor oxidation resistance, easy corrosion of electric point contact, easy aging and the like, and cannot meet the use requirements of aerospace, and therefore, a four-core coaxial high-speed data transmission cable for aerospace is necessary to be provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a four-core coaxial high-speed data transmission cable for aerospace, which has the advantages of heat resistance, strong bearing capacity and the like, and solves the problems that the existing cable cannot bear high temperature and the bearing capacity is not strong.

In order to achieve the purposes of heat resistance and strong bearing capacity, the utility model provides the following technical scheme: a four-core coaxial high-speed data transmission cable for aerospace comprises a cable body and a cable conductor, wherein the cable conductor is fixedly installed inside the cable body, a tensile steel wire is fixedly installed inside the cable body, a mixed braided grounding conductor is fixedly installed inside the cable body, a first glass fiber braided protective layer is fixedly installed inside the mixed braided grounding conductor, a mica tape wrapping layer is fixedly installed inside the glass fiber braided protective layer of the first glass fiber braided protective layer, and ethylene propylene diene monomer rubber is filled inside the mica tape wrapping layer;

the cable comprises a second glass fiber braided layer, a second glass fiber braided layer is fixedly mounted inside the ethylene propylene diene monomer, a polyimide wrapping layer is fixedly mounted inside the second glass fiber braided layer, and a tinned copper conductor is fixedly mounted inside the polyimide wrapping layer.

Furthermore, an optical fiber is fixedly arranged inside the tinned copper conductor.

Further, the outer surface of the cable body is a rubber protective layer.

Furthermore, the number of the cables is four, and the cable wires and the tensile steel wires are parallel to each other.

Further, flame-retardant glass fibers are clamped and filled between the rubber protective layer and the mixed woven grounding conductor.

Further, the inside of the hybrid braided grounding conductor is filled with a wrapping filling layer.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

the four-core coaxial high-speed data transmission cable for aerospace use is characterized in that a ground conductor is woven in a mixed mode by arranging the ground conductor, the ground conductor is woven in a mixed mode by wrapping the outer surface of the conductor, the transmission of electric signals cannot be influenced, meanwhile, the heat resistance is good, the cable has good bending resistance, thermal oxidation aging resistance and no obvious melting point, a second glass fiber weaving layer is arranged to well protect a tinned copper conductor and can play a role in heat insulation and heat preservation, meanwhile, a first glass fiber weaving protective layer wire is arranged as a protective layer, high-temperature-resistant emulsion is arranged on the surface of the cable, good sealing performance can be provided, the heat resistance of the cable can be improved, the cable is clear in arrangement and uniform in distribution, ethylene propylene diene monomer rubber has excellent heat resistance, cold resistance, dielectricity, ozone resistance, atmospheric aging resistance and other excellent performances, and silicon dioxide generated after combustion is still an insulator, this is very favorable to cable for aerospace, the cable conductor outside has the mica tape around the covering simultaneously, the mica tape has first glass silk to weave the protective layer around the covering outside cladding, the protective layer is woven to first glass silk can protect the mica tape not receive when receiving external force around the covering and drop, the cable conductor adopts nickel-plated copper conductor, adopt less pitch ratio during the cable conductor transposition simultaneously, the bending property and the compliance of improvement cable body, the melting point of nickel is about 2 times of copper, can carry out effectual high temperature protection to the copper body of being plated.

Drawings

FIG. 1 is a schematic diagram of a data transmission cable according to the present invention;

FIG. 2 is a front cross-sectional view of a data transmission cable according to the present invention;

fig. 3 is a schematic diagram of a cable structure according to the present invention.

In the figure: 1 cable body, 2 mix and weave ground conductor, 3 first PTFE around package filling layer, 4 rubber inoxidizing coating, 5 optic fibre, 6 tensile steel wires, 7 cable conductor, 701 tin-plated copper conductor, 702 polyimide around package, 703 second glass silk weaving layer, 8 weave shielding layer, 9 first glass silk weave sheath, 10 mica tape around package, 11 ethylene propylene diene monomer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, in the embodiment, the four-core coaxial high-speed data transmission cable for aerospace includes a cable body 1 and a cable 7, the cable 7 is fixedly installed inside the cable body 1, the tensile steel wire 6 is fixedly installed inside the cable body 1, the hybrid braided grounding conductor 2 is arranged, the hybrid braided grounding conductor 2 is wrapped on the outer surface of the cable body 1, so that the transmission of electric signals is not affected, the cable has good heat resistance, good bending resistance, thermal oxidation aging resistance and no obvious melting point, the first glass fiber braided protective layer 9 is fixedly installed inside the hybrid braided grounding conductor 2, the first glass fiber braided 9 is arranged as a protective layer, and the surface of the cable has a high-temperature resistant emulsion, so as to provide good sealing performance, meanwhile, the heat resistance of the cable can be improved, the cable 7 is clear in arrangement and uniform in distribution, a mica tape wrapping layer 10 is fixedly arranged inside the first glass fiber braided protective layer 9, and ethylene propylene diene monomer rubber 11 is filled inside the mica tape wrapping layer 10;

cable conductor 7 includes second glass silk weaving layer 703, sets up second glass silk weaving layer 703 and can not only carry out fine protection to tinned copper conductor 701, can play adiabatic heat retaining effect simultaneously, and the inside fixed mounting of EPT 11 has second glass silk weaving layer 703, and the inside fixed mounting of second glass silk weaving layer 703 has polyimide around covering 702, and polyimide has tinned copper conductor 701 around the inside fixed mounting of covering 702.

When in implementation, the method comprises the following steps:

1) the first glass fiber is arranged to weave 9 protective layer wires as a protective layer, and the surface of the protective layer is provided with high-temperature-resistant emulsion, so that good sealing performance can be provided, and the heat resistance of the protective layer can be improved;

2) then, the second glass fiber braided layer 703 can not only protect the tinned copper conductor 701 well, but also play a role in heat insulation and preservation;

3) the ethylene propylene diene monomer 11 in the cable body 1 has excellent heat resistance, cold resistance, dielectric property, ozone resistance, atmospheric aging resistance and other excellent performances;

4) and finally, the first glass fiber braided protective layer 9 can protect the mica tape from falling off when the lapping layer is subjected to external force, the cable adopts the nickel-plated copper conductor 701, and meanwhile, the cable 7 adopts a smaller pitch-diameter ratio when being twisted, so that the bending performance and the flexibility of the cable body 1 are improved.

In conclusion, the four-core coaxial high-speed data transmission cable for aerospace use has the advantages that the mixed braided grounding conductor 2 is arranged, the mixed braided grounding conductor 2 is wrapped on the outer surface of the cable body 1, so that the transmission of electric signals is not influenced, the heat resistance is good, the bending resistance is good, the thermal oxidation aging resistance is good, no obvious melting point exists, the second glass fiber braided layer 703 can well protect the tin-plated copper conductor 701 and can play a role in heat insulation and heat preservation, meanwhile, the first glass fiber braided 9 sheath fiber is used as a protective layer, the surface of the cable is provided with high-temperature-resistant emulsion, good sealing performance can be provided, the heat resistance can be improved, the cable 7 is clear in arrangement and uniform in distribution, and the ethylene propylene diene monomer 11 has excellent heat resistance, cold resistance, dielectric property, ozone resistance, atmospheric aging resistance and other excellent performances, and the silica that generates after the burning still is the insulator, this is very favorable to cable for aerospace, the cable conductor has mica tape to wind covering 10 around the package simultaneously outside the cable conductor, the mica tape has first glass silk to weave protective layer 9 around the outside cladding of covering 10, first glass silk is woven protective layer 9 and can be protected the mica tape and not receive when receiving external force around the covering and drop, the cable conductor adopts nickel-plated copper conductor 701, adopt less pitch ratio when 7 twists of cable conductor simultaneously, improve the bending property and the compliance of cable body 1, the fusing point of nickel is about 2 times of copper, can carry out effectual high temperature protection to the copper body that is plated.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a coaxial high-speed data transmission cable of four-core for aerospace, includes cable body (1) and cable conductor (7), its characterized in that: a cable (7) is fixedly installed inside the cable body (1), a tensile steel wire (6) is fixedly installed inside the cable body (1), a hybrid braided grounding conductor (2) is fixedly installed inside the cable body (1), a first glass fiber braided protective layer (9) is fixedly installed inside the hybrid braided grounding conductor (2), a mica tape wrapping layer (10) is fixedly installed inside the first glass fiber braided protective layer (9), and Ethylene Propylene Diene Monomer (EPDM) rubber (11) is filled inside the mica tape wrapping layer (10);

the cable (7) comprises a second glass fiber braided layer (703), the second glass fiber braided layer (703) is fixedly mounted inside the ethylene propylene diene monomer (11), a polyimide wrapping layer (702) is fixedly mounted inside the second glass fiber braided layer (703), and a tinned copper conductor (701) is fixedly mounted inside the polyimide wrapping layer (702).

2. The aerospace four-core coaxial high-speed data transmission cable according to claim 1, wherein: and an optical fiber (5) is fixedly arranged in the tin-plated copper conductor (701).

3. The aerospace four-core coaxial high-speed data transmission cable according to claim 1, wherein: the outer surface of the cable body (1) is provided with a rubber protective layer (4).

4. The aerospace four-core coaxial high-speed data transmission cable according to claim 1, wherein: the number of the cables (7) is four, and the four cables (7) are parallel to the tensile steel wire (6).

5. The aerospace four-core coaxial high-speed data transmission cable according to claim 3, wherein: and flame-retardant glass fibers are clamped and filled between the rubber protective layer (4) and the mixed braided grounding conductor (2).

6. The aerospace four-core coaxial high-speed data transmission cable according to claim 1, wherein: the inside of the mixed braided grounding conductor (2) is filled with a wrapping filling layer (3).