CN204651085U - Aerospace LVDS transmission cable - Google Patents
Aerospace LVDS transmission cable Download PDFInfo
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- CN204651085U CN204651085U CN201520247634.7U CN201520247634U CN204651085U CN 204651085 U CN204651085 U CN 204651085U CN 201520247634 U CN201520247634 U CN 201520247634U CN 204651085 U CN204651085 U CN 204651085U
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Abstract
The utility model is aerospace LVDS transmission cable, its structure comprises conductor (1), insulation (2), naked earth connection (3), filled core (4), shielding (5), sheath (6), and wherein the periphery of conductor (1) is insulating barrier (2); The periphery of insulating barrier (2) is naked earth connection (3); The periphery of naked earth connection (3) is filled core (4); The periphery of filled core (4) is shielding (5); The periphery of shielding (5) is sheath (6).Advantage: cable adopts low-loss fluoroplastics lapped insulation, silver-plated circular copper wire braid shielded, fluoroplastics sheath; There is the features such as high-low temperature resistant, softness, lightweight, ageing-resistant, fire-retardant, low decay, stable signal transmission, and there is the adaptive characteristic of space environment such as resistance to irradiation, vacuum outgas, be applicable to the LVDS Signal transmissions under aeronautical field severe rugged environment.
Description
Technical field
The utility model is aerospace LVDS transmission cable, cable has the features such as long-term high-low temperature resistant (-100 DEG C ~+200 DEG C), soft, lightweight, ageing-resistant, fire-retardant, low decay, stable signal transmission, and there is the adaptive characteristic of space environment such as resistance to irradiation, vacuum outgas, be applicable to the LVDS Signal transmissions under aeronautical field severe rugged environment.
Background technology
At present, the domestic LVDS transmission cable also not adapting to aeronautical field, main dependence on import at present, this product is designed and developed according to GJB 973A-2004 " soft and semihard radio frequency cable general specification ", GJB 773A-2000 " Aero-Space fluoropolymer insulated wire cable " and ESA/SCC 3902/002 " C0AXIAL, TRIAXIAL AND SYMMERTRIC CABLES " standard and user's Special use environmental demand.What domestic common LVDS cable adopted is all normal temperature material, and high and low temperature resistance is poor; Signal transmissions decay is large, poor electrical performance; It is thick that material extrudes thickness, and product external diameter is large, Heavy Weight, needs larger to lay space; And it is not radioresistance is poor, ageing-resistant, the instructions for use of aeronautical field severe rugged environment can not be met.
Aerospace LVDS transmission cable adopts high-low temperature resistant and low-loss fluorine material, takes into full account its applicability and fail safe, takes into full account the Special use requirements such as little, lightweight, soft, easy for installation, the resistance to irradiation of high/low temperature, external diameter, low-loss.
Summary of the invention
A kind of aerospace LVDS transmission cable that the utility model proposes, cable conductor is high strength silver-plated copper alloy twisted wire, improves the mechanical strength of cable conductor, solves the problem of the easy disconnected core of small dimension conductor (26A wire gauge) when assembling; Insulation adopts high-low temperature resistant and low-loss PTFE material lapped insulation, reduces the outside diameter of cable and weight, the flexibility of raising cable and electric property (low decay, low electric capacity, high bandwidth) etc.; Sheath adopts Meltability polytetrafluorethyletubular (PFA) thin-walled extrusion molding, improves the mechanical performance of cable, and improves radiation-resistant property.
Technical solution of the present utility model: aerospace LVDS transmission cable, its structure comprises the conductor (1) with the stranded silver-plated copper alloy twisted wire of electric wire cable wire twisting machine, with the insulating barrier (2) that the wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE of winding machine is with, with the naked earth connection (3) of electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire, with the filled core (4) of electric wire cable wire twisting machine bundle strand expanded microporous polytetra fluoroethylene-EPTEE PTFE band, material is silver-plated circular copper wire, adopt the screen (5) of braiding machine braiding, the sheath (6) of the Meltability polytetrafluorethyletubular PFA adopting high temperature extrusion machine thin-walled to extrude, the periphery of the conductor (1) of electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire is wherein used to be the insulating barrier (2) be with the wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE of winding machine, the periphery of the insulating barrier (2) be with winding machine wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE is the naked earth connection (3) with electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire, filled core (4) with the periphery of the naked earth connection (3) of electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire, the peripheral material of filled core (4) is silver-plated circular copper wire, adopts the screen (5) of braiding machine braiding, material is silver-plated circular copper wire, and the periphery of the screen (5) adopting braiding machine to weave is the sheath (6) of the Meltability polytetrafluorethyletubular PFA adopting high temperature extrusion machine thin-walled to extrude.
The utility model has the following advantages:
(1) high strength: conductor is high strength silver-plated copper alloy twisted wire, substantially increases the mechanical performance of conductor, solves the problem of the easy disconnected core of the small dimension conductor (26A wire gauge) when technique is assembled;
(2) high-low temperature resistant: insulation and sheath all adopt can the fluoroplastics of high-low temperature resistant, make its Long-term service temperature can reach-100 ~+200 DEG C;
(3) low decay, high bandwidth: insulation adopts the expanded microporous polytetra fluoroethylene-EPTEE (PTFE) of high-foaming to be with wrapped, and the dielectric constant of dielectric is very little, can effectively reduce the signal attenuation of cable transmission, improves bandwidth;
(4) light-duty, soft: insulation adopts expanded microporous polytetra fluoroethylene-EPTEE (PTFE) band of high-foaming, the dielectric constant of dielectric is little, under ensureing the prerequisite of cable properties impedance (120 Ω), outer insulation diameter can be reduced, and density of material is low, so it is little, lightweight to compare other similar outside diameter of cable; Lapping structure effectively can also improve the pliability of cable;
(5) high flame retardant, ageing-resistant, corrosion-resistant: adopt fluoroplastics as insulation, fill and sheath material, make its cable have good fire resistance, ageing-resistant and decay resistance;
(6) excellent electrical property: be applicable to LVDS high speed data transfer, has impedance stabilization, an advantage such as little, the electric performance stablity of decaying;
(7) aerospace environmental suitability,
1) resistance to irradiation: resistance to irradiation dose 10
6rad(Si), after test, sheath is without cracking, and insulation proof voltage 800V does not puncture;
2) thermal vacuum gassing: the total mass loss (TML)≤1% of material, condensable volatile matter (CVCM)≤0.1%;
3) nonmetallic materials pernicious gas effusion: the oder levels that cable nonmetallic materials discharge excitant and special odor gas is not more than 1.5 grades, deviates from carbon monoxide and is not more than 25 μ g/g; Deviate from total organic matter and be not more than 100 μ g/g;
4) burn smoke density: result of the test should meet CCAR25 portion, (a) requirement of R3853 annex G V part, and namely after 3 specimen test 4min, average Dm must not more than 200;
5) pernicious gas that burns discharges: cable material burning produces pernicious gas and undertaken by HB 7066-1994 regulation, experimental condition: pretreatment condition (21 ± 3) DEG C, (50 ± 5) %RH, time is greater than 24h, test model is flame modes (NF+F), sampling time is 4min, and gas examination result should meet the requirement of following table.
Gas detect result
Accompanying drawing illustrates:
Fig. 1 is the structural representation of aerospace LVDS transmission cable.
In figure 1 is conductor; 2 is insulating barriers; 3 is naked earth connections; 4 is filled cores; 5 is screens; 6 is sheaths.
Embodiment:
As shown in Figure 1, aerospace LVDS transmission cable, its structure comprises the conductor (1) with the stranded silver-plated copper alloy twisted wire of electric wire cable wire twisting machine, with the insulating barrier (2) that the wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE of winding machine is with, with the naked earth connection (3) of electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire, with the filled core (4) of electric wire cable wire twisting machine bundle strand expanded microporous polytetra fluoroethylene-EPTEE PTFE band, material is silver-plated circular copper wire, adopt the screen (5) of braiding machine braiding, the sheath (6) of the Meltability polytetrafluorethyletubular PFA adopting high temperature extrusion machine thin-walled to extrude, the periphery of the conductor (1) of electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire is wherein used to be the insulating barrier (2) be with the wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE of winding machine, the periphery of the insulating barrier (2) be with winding machine wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE is the naked earth connection (3) with electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire, filled core (4) with the periphery of the naked earth connection (3) of electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire, the peripheral material of filled core (4) is silver-plated circular copper wire, adopts the screen (5) of braiding machine braiding, material is silver-plated circular copper wire, and the periphery of the screen (5) adopting braiding machine to weave is the sheath (6) of the Meltability polytetrafluorethyletubular PFA adopting high temperature extrusion machine thin-walled to extrude.
Its preparation method, comprises following technique:
1) use the stranded silver-plated copper alloy twisted wire of electric wire cable wire twisting machine as conductor;
2) be with as insulating barrier at the wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE of conductor external application winding machine;
3) be with as filled core with electric wire cable wire twisting machine bundle strand expanded microporous polytetra fluoroethylene-EPTEE PTFE;
4) use electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire as naked earth connection;
5) with cabler, the insulated wire cores of insulating barrier, filled core and naked earth connection are twisted together;
6) material is silver-plated circular copper wire, adopts braiding machine woven shield;
7) high temperature extrusion machine thin-walled is adopted to extrude Meltability polytetrafluorethyletubular PFA as sheath.
Be the stranded silver-plated copper alloy twisted wire of concentric type at described conductor (1), intensity is high, stretching resistance is large.
Described insulating barrier (2) adopts expanded microporous polytetra fluoroethylene-EPTEE PTFE band wrapped, and density of material is low, decays little, lightweight, heatproof-100 DEG C ~+250 DEG C.
The silver-plated copper alloy twisted wire that described naked earth connection (3) adopts concentric type stranded, intensity is high, stretching resistance is large.
Described filled core (4) adopts expanded microporous polytetra fluoroethylene-EPTEE PTFE band bundle strand, and density of material is low, lightweight, heatproof
-100℃～+250℃。
Described screen (5) adopts the braiding of silver-plated circular copper wire.
Described sheath (6) adopts Meltability polytetrafluorethyletubular PFA, and material extrusion molding thickness is thin, mechanical strength is high, external diameter is little, lightweight, heatproof-100 DEG C ~+250 DEG C.
Aerospace LVDS transmission cable, have references to GJB 973A-2004 " soft and semihard radio frequency cable general specification ", GJB 773A-2000 " Aero-Space fluoropolymer insulated wire cable " and ESA/SCC 3902/002 " C0AXIAL, TRIAXIAL AND SYMMERTRIC CABLES " standard and user's Special use environmental demand design and develop, and product can adapt to the LVDS Signal transmissions under aeronautical field severe rugged environment.
Claims (6)
1. aerospace LVDS transmission cable, it is characterized in that comprising the conductor (1) with the stranded silver-plated copper alloy twisted wire of electric wire cable wire twisting machine, with the insulating barrier (2) that the wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE of winding machine is with, with the naked earth connection (3) of electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire, with the filled core (4) of electric wire cable wire twisting machine bundle strand expanded microporous polytetra fluoroethylene-EPTEE PTFE band, material is silver-plated circular copper wire, adopt the screen (5) of braiding machine braiding, the sheath (6) of the Meltability polytetrafluorethyletubular PFA adopting high temperature extrusion machine thin-walled to extrude, the periphery of the conductor (1) of electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire is wherein used to be the insulating barrier (2) be with the wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE of winding machine, the periphery of the insulating barrier (2) be with winding machine wrapped expanded microporous polytetra fluoroethylene-EPTEE PTFE is the naked earth connection (3) with electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire, filled core (4) with the periphery of the naked earth connection (3) of electric wire cable wire twisting machine stranded silver-plated copper alloy twisted wire, the peripheral material of filled core (4) is silver-plated circular copper wire, adopts the screen (5) of braiding machine braiding, material is silver-plated circular copper wire, and the periphery of the screen (5) adopting braiding machine to weave is the sheath (6) of the Meltability polytetrafluorethyletubular PFA adopting high temperature extrusion machine thin-walled to extrude.
2. aerospace LVDS transmission cable according to claim 1, is characterized in that at described conductor (1) be the stranded silver-plated copper alloy twisted wire of concentric type.
3. aerospace LVDS transmission cable according to claim 1, is characterized in that the heatproof at described insulating barrier (2)
-100℃～+250℃。
4. aerospace LVDS transmission cable according to claim 1, is characterized in that the silver-plated copper alloy twisted wire adopting concentric type stranded at described naked earth connection (3).
5. aerospace LVDS transmission cable according to claim 1, is characterized in that in described filled core (4) heatproof-100 DEG C ~+250 DEG C.
6. aerospace LVDS transmission cable according to claim 1, is characterized in that in described sheath (6) heatproof-100 DEG C ~+250 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247634.7U CN204651085U (en) | 2015-04-23 | 2015-04-23 | Aerospace LVDS transmission cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247634.7U CN204651085U (en) | 2015-04-23 | 2015-04-23 | Aerospace LVDS transmission cable |
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| CN204651085U true CN204651085U (en) | 2015-09-16 |
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| CN201520247634.7U Active CN204651085U (en) | 2015-04-23 | 2015-04-23 | Aerospace LVDS transmission cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018120058A1 (en) * | 2016-12-30 | 2018-07-05 | 德尔福派克电气系统有限公司 | Shielded cable assembly |
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2015
- 2015-04-23 CN CN201520247634.7U patent/CN204651085U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018120058A1 (en) * | 2016-12-30 | 2018-07-05 | 德尔福派克电气系统有限公司 | Shielded cable assembly |
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