CN209515222U - Four coaxial cables of aerospace - Google Patents
Four coaxial cables of aerospace Download PDFInfo
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- CN209515222U CN209515222U CN201821887346.8U CN201821887346U CN209515222U CN 209515222 U CN209515222 U CN 209515222U CN 201821887346 U CN201821887346 U CN 201821887346U CN 209515222 U CN209515222 U CN 209515222U
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- layer
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- graphite
- coaxial cables
- graphite cloth
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Abstract
The utility model discloses four coaxial cables of aerospace, including cable core and shielded layer, the center of cable core is equipped with strengthening core, and cable core is made of four coaxial cores and strengthening core twisted synthesizing cable, core conductor lines and the insulation being wrapped in outside conductor lines；The periphery packet of cable core is connected to graphite cloth, and graphite cloth outsourcing is connected to shielded layer, sheath is extruded with outside shielded layer；Graphite cloth is by matrix strap, and in the strength glue-line of matrix belt surface even spread, the graphene layer and hot-rolling being sticked to outside strength glue-line are pressed in the composition of the graphite powder last layer outside graphene layer.The utility model imitates the method that Mechanical Method prepares graphene, construct a kind of graphite cloth with graphene conductive layer, it ensure that the electric conductivity and conductive stability of graphite cloth, and graphite cloth is constituted to three layers of shielded layer together with internal shield, external shielding layer, while improving electromagnetic wave shielding, the thickness of graphite cloth is also relatively thin, alleviates the weight of shielded layer.
Description
Technical field
The utility model relates to four coaxial cables of field of cable technology more particularly to aerospace.
Background technique
Four coaxial cables have the following characteristics that compact-sized as a kind of new data/address bus, occupy little space, bandwidth
Height, steady signal transmission support hot plug, and the transmission rate of expansible data, topological structure is versatile and flexible, and number is simultaneous completely
Hold, peer-to-peer network can be established, while supporting synchronous and asynchronous two kinds of data-transmission modes etc., therefore in aviation field, weapon system
System is more and more widely used.
As the speed of service of aerospace computer is continuously improved, the transmission speed of external connection apparatus also mentions therewith
Height, to be put forward new requirements to cable.Currently, domestic completely applicable product also useless, relies primarily on import, such as safe section
The products such as CEC-RWC-18664, CEC-RWC-18634, CEC-RWC-18666.
Utility model content
The purpose of this utility model is the technological gap to fill up the above field domestic demands, and the aerospace proposed is used
Four coaxial cables.
To achieve the goals above, the utility model adopts the technical scheme that
The center of four coaxial cables of aerospace, including cable core and shielded layer, cable core is equipped with strengthening core, and cable core is by four
Coaxial core and strengthening core twisted synthesizing cable, core are made of conductor lines and the insulation being wrapped in outside conductor lines；The periphery of cable core
Packet is connected to graphite cloth, and graphite cloth outsourcing is connected to shielded layer, sheath is extruded with outside shielded layer.
Preferably, conductor lines by being twisted in the same direction with one heart using multiply silver-coated copper wire, and ectonexine pitch is consistent, conductor table
Face is smooth, rounding.
Preferably, insulation is pushed by expanded polytetrafluoroethyl(ne, constitutes insulating layer, section by high temperature sintering after pushing
Electric constant≤1.45, so that cable attenuation≤0.730dB@1GHz.
Preferably, strengthening core, which uses, twists aramid fiber silk, and -85 DEG C~+400 DEG C of heatproof.
Preferably, graphite cloth is sticked to strength in the strength glue-line of matrix belt surface even spread by matrix strap
Graphene layer and hot-rolling outside glue-line are pressed in the composition of the graphite powder last layer outside graphene layer, and matrix strap is specifically nylon tape or rubber
Adhesive plaster bag, the main component of seccotine are cyanoacrylate resin.
Preferably, shielded layer includes internal shield and external shielding layer, and internal shield and external shielding layer are by silver-plated flat type copper wire
It weaves, the count of external shielding layer is 50-80 net, and the count of internal shield is 90-120 net, two layers of shielding
Density is not less than 95%, shield effectiveness >=90dB@1GHz.
Preferably, the material of sheath be soluble poly tetrafluoroethene, tensile strength >=28MPa, elongation at break >=300%,
- 65 DEG C~+250 DEG C of heatproof.
Compared with prior art, the utility model has the beneficial effects that
1. the utility model imitates the method that Mechanical Method prepares graphene, raw graphite is developed by mortar formula beveller
Graphite flake, graphite flake is the layer structure being made of multi-layer graphene at this time, by graphite flake roll-in on substrate, make graphite flake into
One step generates intermediate peeling, while applying seccotine on matrix cloth band, so that matrix strap is had the function of adhesive tape, by adhesive tape in stone
Continuous roll-in and tearing takes on ink sheet substrate, can obtain the graphene-structured of single layer or few layer, so that constructing a kind of includes stone
Ink powder last layer, graphene layer, strength glue-line and matrix strap graphite cloth, on the one hand due to the graphene of Mechanical Method preparation
Interlayer continuity is high, and the flexibility of graphene is preferable, and intensity is higher, makes that electric conductivity is higher, electric conductivity is more stable, even if graphite
Powder bed generates discontinuous hole when in use and electric conductivity is caused to fail, and graphene layer still ensure that the conduction of conductive fabric
Property；On the other hand the thickness for reducing graphite cloth, alleviates the weight of cable, is applicable in the cable product of the utility model
In aerospace.
2. the utility model constitutes three layers of shielded layer using graphite cloth together with internal shield, external shielding layer, with
The mode that anti-shielding is stepped up from inside to outside gradually offsets electromagnetic interference, while the graphite powder last layer of graphite cloth has profit
Sliding effect, insulating layer and shielded layer to cable play intermediate function served as bridge, have lubricating action to both sides, can prevent cable from making
It is varied widely with the spacing between insulation-conductor caused by the deformation of generation, reduces the noise generated in transmission process,
To further increase cable it is anti-electromagnetically.
3. the cable product of the utility model has the advantage that 1) outer diameter is small, light-weight, 2) high-low temperature resistant, and 3) tension
Intensity is high, 4) decaying is small, is suitable for long-distance transportation, is particularly suitable for space flight and aviation computer and connect with external equipment to be used.
Detailed description of the invention
Fig. 1 be the utility model proposes four coaxial cables of aerospace structural schematic diagram；
Fig. 2 be the utility model proposes four coaxial cables of aerospace graphite cloth interlayer structure figure；
In figure: 1 conductor lines, 2 insulation, 3 strengthening cores, 4 graphite cloth, 401 matrix straps, 402 strength glue-lines, 403 stones
Black alkene layer, 404 graphite powder last layer, 5 shielded layers, 501 internal shields, 502 external shielding layers, 6 sheaths.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1, the center of four coaxial cables of aerospace, including cable core and shielded layer 5, cable core is equipped with strengthening core 3,
Cable core is by four coaxial 3 twisted synthesizing cables of core and strengthening core, and core is by conductor lines 1 and be wrapped in outside conductor lines 12 groups of insulation
At；The periphery packet of cable core is connected to graphite cloth 4, and 4 outsourcing of graphite cloth is connected to shielded layer 5, sheath is extruded with outside shielded layer 5
6；Conductor lines 1 by being twisted with one heart using multiply silver-coated copper wire in the same direction, and ectonexine pitch is consistent, and conductive surface is smooth, rounding,
Insulation 2 is pushed by expanded polytetrafluoroethyl(ne, and strengthening core 3, which uses, twists aramid fiber silk, and -85 DEG C~+400 DEG C of heatproof, stone
Black conductive fabric 4 is by matrix strap, in the strength glue-line of matrix strap surface even spread, the graphene being sticked to outside strength glue-line
Layer and hot-rolling are pressed in the composition of the graphite powder last layer outside graphene layer, and matrix strap is specifically nylon tape or rubber cloth bag, shielded layer 5
Including internal shield and external shielding layer, internal shield and external shielding layer are woven by silver-plated flat type copper wire, the volume of external shielding layer
Knitting density is 50-80 net, and the count of internal shield is 90-120 net, and the material of sheath 6 is soluble poly tetrafluoroethene.
The utility model is distributed using reasonable material, and cable product has the advantage that 1) outer diameter is small, light-weight:
Insulation uses expanded polytetrafluoroethyl(ne, and the dielectric constant of polytetrafluoroethylene (PTFE) is 2.1 under normal circumstances, by foaming materials, absolutely
Edge dielectric constant is reduced to 1.45 or so, is that the similar outside diameter of cable of 110 Ω is small, light-weight compared to impedance；2) high-low temperature resistant: cable
Insulation and sheath use high temperature resistant fluorine material, and it is severe to be suitable for aerospace at -65~250 DEG C for cable long-term use temperature
It is used in environment；3) tensile strength is high: the strengthening core of cable uses aramid fiber silk, improves the whole tensile strength of cable；
4) decay small: selecting silver-plated copper conductor and expanded polytetrafluoroethyl(ne material, reduce the dielectric constant of dielectric layer, reduce cable
Signal decaying when transmission improves bandwidth, and highest transmission frequency reaches 1GHz, and decaying is not more than 0.730dB@1GHz.
The preparation example (physical method) of the graphite cloth of the utility model: in view of the above structural requirement, this is practical new
Raw graphite is developed into graphite flake by mortar formula beveller by type, and graphite flake is the stratiform knot being made of multi-layer graphene at this time
Structure makes graphite flake further generate intermediate peeling, while applying seccotine on matrix cloth band by graphite flake roll-in on substrate,
Matrix strap is set to have the function of adhesive tape, continuous roll-in and tearing takes on graphite plate base by adhesive tape, can obtain single layer or few
The graphene-structured of layer, one layer of powdered graphite in reheating roll-in.
This is to imitate the adhesive tape machinery method method for preparing graphene, construct it is a kind of include graphite powder last layer, graphene layer,
The graphite cloth of strength glue-line and matrix strap, on the one hand due between the graphene layer of Mechanical Method preparation continuity it is high, and stone
The flexibility of black alkene is preferable, and intensity is higher, makes that electric conductivity is higher, electric conductivity is more stable, even if graphite powder last layer produces when in use
It gives birth to discontinuous hole and electric conductivity is caused to fail, graphene layer still ensure that the electric conductivity of conductive fabric；On the other hand it reduces
The thickness of graphite cloth, alleviates the weight of cable, and the cable product of the utility model is made to be suitable for aerospace.
The principle of electromagnetic shielding: graphite cloth 4 constitutes three layers of shielded layer together with internal shield, external shielding layer, with
The mode that anti-shielding is stepped up from inside to outside gradually offsets electromagnetic interference；The graphite of graphite cloth 4 has lubrication to make simultaneously
With insulating layer and shielded layer to cable play intermediate function served as bridge, have lubricating action to both sides, can prevent cable from using production
Spacing caused by raw deformation between insulation-conductor varies widely, and reduces the noise generated in transmission process, thus
Further increase cable it is anti-electromagnetically.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (7)
1. four coaxial cables of aerospace, including cable core and shielded layer (5), which is characterized in that the center of the cable core is equipped with
Strengthening core (3), the cable core is by four coaxial core and strengthening core (3) twisted synthesizing cables, and the core is by conductor lines (1) and packet
It is rolled in insulation (2) composition of conductor lines (1) outside；The periphery packet of the cable core is connected to graphite cloth (4), the graphite cloth
(4) outsourcing is connected to shielded layer (5), is extruded with sheath (6) outside the shielded layer (5).
2. four coaxial cables of aerospace according to claim 1, which is characterized in that the conductor lines (1) are by using
Multiply silver-coated copper wire is twisted in the same direction with one heart, and ectonexine pitch is consistent, and conductive surface is smooth, rounding.
3. four coaxial cables of aerospace according to claim 1, which is characterized in that the insulation (2) is poly- by foaming
Tetrafluoroethene is pushed.
4. four coaxial cables of aerospace according to claim 1, which is characterized in that the strengthening core (3), which uses, to be added
Twirl aramid fiber silk, -85 DEG C~+400 DEG C of heatproof.
5. four coaxial cables of aerospace according to claim 1, which is characterized in that the graphite cloth (4) by
Matrix strap (401) is sticked to strength glue-line (402) outside in the strength glue-line (402) of matrix strap (401) surface even spread
Graphene layer (403) and hot-rolling be pressed in the outer graphite powder last layer (404) of graphene layer (403) and constitute, described matrix strap
It (401) is specifically nylon tape or rubber cloth bag.
6. four coaxial cables of aerospace according to claim 1, which is characterized in that the shielded layer (5) includes interior
Shielded layer (501) and external shielding layer (502), the internal shield (501) and external shielding layer (502) are woven by silver-plated flat type copper wire
It forms, the count of the external shielding layer (502) is 50-80 net, and the count of internal shield (501) is 90-120 net.
7. four coaxial cables of aerospace according to claim 1, which is characterized in that the material of the sheath (6) is
Soluble poly tetrafluoroethene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821887346.8U CN209515222U (en) | 2018-11-16 | 2018-11-16 | Four coaxial cables of aerospace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821887346.8U CN209515222U (en) | 2018-11-16 | 2018-11-16 | Four coaxial cables of aerospace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209515222U true CN209515222U (en) | 2019-10-18 |
Family
ID=68189663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821887346.8U Expired - Fee Related CN209515222U (en) | 2018-11-16 | 2018-11-16 | Four coaxial cables of aerospace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209515222U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111415773A (en) * | 2020-02-20 | 2020-07-14 | 江苏浦漕科技股份有限公司 | Low-smoke halogen-free flame-retardant coaxial cable with polyethylene insulation polyolefin sheath |
-
2018
- 2018-11-16 CN CN201821887346.8U patent/CN209515222U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111415773A (en) * | 2020-02-20 | 2020-07-14 | 江苏浦漕科技股份有限公司 | Low-smoke halogen-free flame-retardant coaxial cable with polyethylene insulation polyolefin sheath |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191018 Termination date: 20211116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |