CN203839127U - Low-expansion high-strength multi-core signal cable - Google Patents
Low-expansion high-strength multi-core signal cable Download PDFInfo
- Publication number
- CN203839127U CN203839127U CN201420199590.0U CN201420199590U CN203839127U CN 203839127 U CN203839127 U CN 203839127U CN 201420199590 U CN201420199590 U CN 201420199590U CN 203839127 U CN203839127 U CN 203839127U
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- cable
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- high strength
- plastic
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- 239000000835 fiber Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 23
- 239000004020 conductor Substances 0.000 claims description 15
- 229920000728 polyester Polymers 0.000 claims description 15
- 229920001721 polyimide Polymers 0.000 claims description 13
- -1 polytetrafluoroethylene Polymers 0.000 claims description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 13
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 13
- 239000004642 Polyimide Substances 0.000 claims description 12
- 238000005728 strengthening Methods 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 8
- 229920000271 Kevlar® Polymers 0.000 claims description 6
- 229920000561 Twaron Polymers 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000004761 kevlar Substances 0.000 claims description 6
- 229920002577 polybenzoxazole Polymers 0.000 claims description 6
- 239000004762 twaron Substances 0.000 claims description 6
- 125000003545 alkoxy group Chemical group 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- 229920006163 vinyl copolymer Polymers 0.000 claims description 5
- 229920002313 fluoropolymer Polymers 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920006241 epoxy vinyl ester resin Polymers 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 229920003055 poly(ester-imide) Polymers 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 230000007774 longterm Effects 0.000 description 3
- 238000009954 braiding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002968 anti-fracture Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model relates to the technical field of special cables, and aims to provide a low-expansion high-strength multi-core signal cable capable of satisfying the special application of aerospace. The low-expansion high-strength multi-core signal cable is characterized in that the cable is formed by a central high-strength fiber reinforcing core, a high-strength fiber braided layer, a tape wrapping layer, a core wire layer, a shielding layer and an outer sheath in sequence from the inside to the outside, a plurality of insulation conducting wires and a plurality of micro coaxial cables are arranged outside the tape wrapping layer in central symmetry so that the core wire layer is formed, the thermal expansion coefficients of the central high-strength fiber reinforcing core and the high-strength fiber braided layer employed by the cable are negative, and the thermal expansion coefficients of materials of the other parts of the cable are positive. The low-expansion high-strength multi-core signal cable is advantaged by reasonable structure, reliable performance, low expansion, high strength, small wire diameter, good high and low temperature environment resistance and the like.
Description
Technical field
The utility model relates to special cable technical field, particularly low bulk high strength Multi-core signal cable.
Technical background
At present, most high-strength cables with strengthening structure focus on the structural design of cable tensile strength, as a kind of cold-resistant, the high-strength cable of CN 202871359 U reports have adopted steel core twisted wire to strengthen the anti-fracture performance of cable, application number CN 200972799 Y have reported a kind of mooring cable, this cable be take aramid fiber as tensile elements, has guaranteed the high-intensity mooring function of cable.
Yet, in some special application field, particularly in aerospace field, except to the requirement of tensile strength, continuous expansion along with Aero-Space exploration field, cable self characteristic of expanding with heat and contract with cold is produced to special demand, that is, require high-strength cable also to need to have the performance of low bulk high-intensity signal.And this low bulk high-intensity signal cable is in the prior art there are no research and concern.
This cable, except there being higher tensile strength (mooring function), also needs low thermal coefficient of expansion, can adapt to ± 70 ℃ of harsh space temperature alternation environment, and can transmit multichannel low-and high-frequency signal.Typical case's application of this cable is the electric field detecting instrument carrying on satellite, this instrument has four and surveys ball, each is surveyed ball and lies on satellite body by 5m cable, survey ball for four and form a space tetrahedron profile in the position in space, every two instruments of surveying in ball obtain the average field intensity between two balls by measuring two electrical potential differences of surveying on ball.Because cable is longer, if cable length generation minor variations under space environment, also can cause two to survey sphere gap generation significant change, this will cause that test benchmark line drifts about, have a strong impact on measuring accuracy, therefore,, under harsh high and low temperature environment, to the low bulk of cable self/shrinkage character, require quite high.In addition,, before satellite launch, cable lopping is wound on cylinder, after satellite launch completes, on satellite, extension means applies transient force pulse to cable, by cable fast from stretching and to be split into stretching state around cylinder, at this moment, cable will bear huge pulling force, so cable itself should have high strength.Due to spacecraft narrow space and the mission requirements that will transmit multichannel low-and high-frequency signal, cable also should adopt fine line diameter heart yearn, reduces as far as possible the outside diameter of cable.
Utility model content
Technical problem to be solved in the utility model is for the deficiencies in the prior art, a kind of low bulk high strength Multi-core signal cable is provided, under space environment, there is low-expansion coefficient, high strength, and further, can meet the use needs of specific use occasion small space.
For solving the problems of the technologies described above, technical solution of the present utility model is:
A low bulk high strength Multi-core signal cable, is characterized in that: described cable consists of center high strength fibre strengthening core 1, high strength fibre braid 2, polytetrafluoroethylene or polyester belting layer 3, core-wire layer, screen 7, oversheath 8 from the inside to surface successively; Described core-wire layer is centrosymmetric and is arranged in polytetrafluoroethylene or polyester belting layer 3 outsides form by some insulated conductors 5 and some fine coaxial cables 4; Described screen 7 is composite shielding layer, its version is: first use the plastic-aluminum combined thin layer 6 of the plastic-aluminum combined thin layer of polyimides or polyester wrapped outside core-wire layer, the aluminium of the plastic-aluminum combined thin layer of polyimides or the plastic-aluminum combined thin layer 6 of polyester towards outside, then at the plastic-aluminum combined thin layer of polyimides or plastic-aluminum combined thin layer 6 aluminium face external application circular copper wire or the copper strap wire braid shieldeds of polyester; Described high strength fibre strengthening core 1 is Kevlar or Twaron or Zylon fiber or these fibers fibrous composite that hot setting forms after epoxy resin or vinylester resin coating; Described high strength fibre braid 2 is Kevlar or Twaron or Zylon fiber; Insulation and the sheath material of the insulation of described insulated conductor 5, fine coaxial cable 4 are fluoroplastics;
Further, described oversheath 8 is ethylene-tetrafluoroethylene copolymer or polyester or polyimides;
The insulating material of described insulated conductor 5 adopts semi-directional polytetrafluoroethylene film or expanded microporous polytetra fluoroethylene-EPTEE film or ethylene-tetrafluoroethylene copolymer or tetrafluoraoethylene-hexafluoropropylene copolymer or tetrafluoroethene-perfluorinated alkoxy vinyl copolymer;
Insulation and sheath material that described fine coaxial cable 4 is used are tetrafluoraoethylene-hexafluoropropylene copolymer or tetrafluoroethene-perfluorinated alkoxy vinyl copolymer or polytetrafluoroethylene or ethylene-tetrafluoroethylene copolymer.
Further, the heart yearn of described fine coaxial cable 4, insulated conductor 5 all adopts the ultra-fine conductor lines of 30AWG ~ 42AWG.
The utility model can bring following beneficial effect:
1, low bulk
Center high strength fibre strengthening core and outer braiding high strength fibre that cable adopts have negative expansion coefficient, and in addition, the thermal coefficient of expansion of cable remainder material is for just.By adjusting the structure of strengthening core structure and braid, make high tensile strength fibrous material negative expansion effect offset the partly or entirely positive thermal expansion effects of other material, and then realize the whole thermal coefficient of expansion that cable is low.
2, high strength
Center high strength fibre strengthening core all adopts in the world generally acknowledged high strength fibre Kevlar, Twaron or Zylon, and both give the tensile strength that cable is not less than 1500 N jointly.
3, good high-low temperature resistant environmental performance
This cable for example adopts insulation and the fluoroplastics selected of sheath material: polytetrafluoroethylene or tetrafluoraoethylene-hexafluoropropylene copolymer or tetrafluoroethene-perfluorinated alkoxy vinyl copolymer or ethylene-tetrafluoroethylene copolymer all can be in temperature ± 70 ℃ long-term use, the center high strength fibre adopting, be Kevlar, Twaron or Zylon fiber, their long-term serviceability temperature-150 ℃ ~ 200 ℃, the plastic-aluminum combined film of polyimides adopting or long-term serviceability temperature ± 70 ℃ of the plastic-aluminum combined film of polyester, above-mentioned material all can meeting spatial aircraft ± 70 ℃ space temperature environment.
4, little wire diameter
Multi-core signal cable heart yearn adopts AWG30 ~ AWG42 conductor, and cross-sectional area of conductor is long-pending little, can effectively dwindle the whole outside diameter of cable, the installation requirement of meeting spatial aircraft small space.
To sum up, the utility model is rational in infrastructure, and dependable performance has low bulk, high strength, little wire diameter, the good advantages such as high-low temperature resistant environmental performance.
Accompanying drawing explanation
Fig. 1: better construction of cable figure who has a try routine of the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, in figure, 1 is center high strength fibre strengthening core to the construction of cable schematic diagram of the present embodiment; The 2nd, high strength fibre braid; The 3rd, polytetrafluoroethylene or polyester belting layer; The 4th, fine coaxial cable, the 5th, insulated conductor; The 6th, the plastic-aluminum combined film of polyimides or the plastic-aluminum combined film of polyester; The 7th, copper strap wire braid shielded; The 8th, oversheath.Described braid shielded 7 can also weave with copper round wire except can weaving with copper strap wire.
The manufacturing process of the present embodiment is as follows:
Center high strength fibre strengthening core 1, can adopt high strength fibre raw yarn or through twist yarn to a certain degree, also after can being high strength fibre epoxy resin-impregnated or vinyl ester resin, by the composite material in 200 ℃ of circular cross sections of sizing and solidifying mould pultrusion;
Take center high strength fibre strengthening core 1 as lead-in wire, with high-speed knitter, on center high strength fibre strengthening core 1, weave high strength fibre braid 2, then, wrapped belting layer 3; The material of belting layer 3 can be polytetrafluoroethylene or polyester.
The sheath extrusion molding of fine coaxial cable 4 carries out on ultrathin coaxial cable production line, controls external diameter tolerance+0.03 mm, and outward appearance is even, and tests by online 1500 V sparking voltages;
Insulated conductor 5 is wrapped: utilize high accuracy winding machine wrapped semi-directional polytetrafluoroethylene film or expanded microporous polytetra fluoroethylene-EPTEE film on little wire gauge conductor, when outermost layer film is semi-directional polytetrafluoroethylene film, need to be at 400 ℃ sintering;
Eight teflon insulation wires 5 and four common strandings of fine coaxial cable 4: laying up pitch is 12 times ~ 16 times external diameters, and after stranding, external diameter is even, without jumping thigh; The plastic-aluminum combined film 6 of the plastic-aluminum combined film of polyimides or polyester is wrapped: the rate of putting up is not more than 50%, aluminium towards outside;
Circular copper wire or copper strap wire braid shielded: silver-plated round line adopts high-speed knitter, and silver-plated lenticular wire adopts low speed braiding machine, and count is not higher than 80%;
After above-mentioned operation completes, finally extrude one deck oversheath 8, oversheath 8 can be ethylene-tetrafluoroethylene copolymer or polyester; Also can adopt polyimide film wrapped.
The above-mentioned description to embodiment is can understand and apply the utility model for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the utility model is not limited to the embodiment here, and those skilled in the art are according to announcement of the present utility model, and not departing from the improvement that the utility model category makes and revise all should be within protection range of the present utility model.
Claims (3)
1. a low bulk high strength Multi-core signal cable, is characterized in that: described cable consists of center high strength fibre strengthening core (1), high strength fibre braid (2), polytetrafluoroethylene or polyester belting layer (3), core-wire layer, screen (7), oversheath (8) from the inside to surface successively; Described core-wire layer is centrosymmetric and is arranged in the outside formation of polytetrafluoroethylene belting layer (3) by some insulated conductors (5) and some fine coaxial cables (4); Described screen (7) is composite shielding layer, its version is: first use the plastic-aluminum combined thin layer of polyimides or the plastic-aluminum combined thin layer of polyester (6) wrapped outside core-wire layer, the aluminium of the plastic-aluminum combined thin layer of polyimides or the plastic-aluminum combined thin layer of polyester (6) towards outside, then at the plastic-aluminum combined thin layer of polyimides or the plastic-aluminum combined thin layer of polyester (6) aluminium face external application circular copper wire or copper strap wire braid shielded; Described high strength fibre strengthening core (1) is Kevlar or Twaron or Zylon fiber or these fibers fibrous composite that hot setting forms after epoxy resin or vinylester resin coating; Described high strength fibre braid (2) is Kevlar or Twaron or Zylon fiber; Insulation and the sheath material of the insulation of described insulated conductor (5), fine coaxial cable (4) are fluoroplastics; Described oversheath (8) is fluoroplastics or polyester or polyimides.
2. according to a kind of low bulk high strength Multi-core signal cable claimed in claim 1, it is characterized in that: described oversheath (8) is ethylene-tetrafluoroethylene copolymer or polyimides; The insulating material of described insulated conductor (5) adopts semi-directional polytetrafluoroethylene film or expanded microporous polytetra fluoroethylene-EPTEE film or ethylene-tetrafluoroethylene copolymer or tetrafluoraoethylene-hexafluoropropylene copolymer or tetrafluoroethene-perfluorinated alkoxy vinyl copolymer; Insulation and sheath material that described fine coaxial cable (4) is used are tetrafluoraoethylene-hexafluoropropylene copolymer or tetrafluoroethene-perfluorinated alkoxy vinyl copolymer or polytetrafluoroethylene or ethylene-tetrafluoroethylene copolymer.
3. according to a kind of low bulk high strength Multi-core signal cable described in claim 1 or 2, it is characterized in that: the heart yearn of described fine coaxial cable (4), insulated conductor (5) all adopts the ultra-fine conductor lines of 30AWG ~ 42AWG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199590.0U CN203839127U (en) | 2014-04-23 | 2014-04-23 | Low-expansion high-strength multi-core signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199590.0U CN203839127U (en) | 2014-04-23 | 2014-04-23 | Low-expansion high-strength multi-core signal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839127U true CN203839127U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420199590.0U Expired - Lifetime CN203839127U (en) | 2014-04-23 | 2014-04-23 | Low-expansion high-strength multi-core signal cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839127U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599523A (en) * | 2020-04-28 | 2020-08-28 | 安徽省康利亚股份有限公司 | Tensile wear-resistant cable for motor train unit |
| CN112735643A (en) * | 2020-12-29 | 2021-04-30 | 河北亿正线缆有限公司 | Copper core fluoroplastic insulated compression-resistant electric wire |
-
2014
- 2014-04-23 CN CN201420199590.0U patent/CN203839127U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599523A (en) * | 2020-04-28 | 2020-08-28 | 安徽省康利亚股份有限公司 | Tensile wear-resistant cable for motor train unit |
| CN112735643A (en) * | 2020-12-29 | 2021-04-30 | 河北亿正线缆有限公司 | Copper core fluoroplastic insulated compression-resistant electric wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |