CN110085354A - A kind of ultravacuum environment composite cable and its production technology - Google Patents

A kind of ultravacuum environment composite cable and its production technology Download PDF

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Publication number
CN110085354A
CN110085354A CN201910474943.0A CN201910474943A CN110085354A CN 110085354 A CN110085354 A CN 110085354A CN 201910474943 A CN201910474943 A CN 201910474943A CN 110085354 A CN110085354 A CN 110085354A
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cable
conductor
coaxial cable
power transmission
wrapped
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阮建波
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YANGZHOU DEYOU CABLE Co Ltd
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YANGZHOU DEYOU CABLE Co Ltd
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Priority to CN201910474943.0A priority Critical patent/CN110085354A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1808—Construction of the conductors
    • H01B11/1813—Co-axial cables with at least one braided conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1834—Construction of the insulation between the conductors
    • H01B11/1847—Construction of the insulation between the conductors of helical wrapped structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1869—Construction of the layers on the outer side of the outer conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1895—Particular features or applications
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/02—Stranding-up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/067—Insulating coaxial cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/08—Insulating conductors or cables by winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • H01B13/2606—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by braiding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
    • H01B3/306—Polyimides or polyesterimides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0045—Cable-harnesses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0241—Disposition of insulation comprising one or more helical wrapped layers of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
    • H01B7/183—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1855—Sheaths comprising helical wrapped non-metallic layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1865—Sheaths comprising braided non-metallic layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806—Protection against damage caused by corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables

Abstract

The present invention relates to a kind of ultravacuum environment composite cable and its production technologies, belong to field of cable technology.Inner sheath, the oversheath set gradually including cable core and outside cable core, the cable core are twisted by 1 coaxial cable, 6 power transmission lines, and the coaxial cable is located at cable core center, and 6 power transmission lines are uniformly distributed in coaxial cable outer layer；The coaxial cable is successively made of conductor, polyimide insulative layer, woven shield, polyhybrid cover layer from inside to outside；The power transmission line is made of the polyimide insulative layer that conductor, conductor outer layer are arranged.Using the advantages of structure be can combine control cable, digital signal cable, power cable institute it is functional, wiring space and wiring cost is greatly saved, digital signal encryption and anti-interference ability are stronger simultaneously, can construct the comprehensive various message of transmitting of digital communication network and make communication system with better function.

Description

A kind of ultravacuum environment composite cable and its production technology
Technical field
The present invention relates to a kind of ultravacuum environment composite cable and its production technologies, belong to field of cable technology.
Background technique
Since vacuum environment has extremely important application in war industry, aeronautical field, vacuum medical treatment, vacuum degree is 3 ×10-5When -200 DEG C of pa temperature or less or 300 DEG C or more, common high polymer material short molecular chain in above-mentioned environment be precipitated compared with Greatly, total mass loss TML > 1.3%, volatilize condensable material CVCM > 0.15% and easy embrittlement, so that signal in ultravacuum environment It is almost impossible with power transmission for transmission.
Summary of the invention
The purpose of the present invention is in view of the above shortcomings of the prior art, provide a kind of ultravacuum environment composite cable and its Production technology, the ultravacuum environment are common using 1 polyimide insulative coaxial cable and 6 power transmission lines with composite cable Composition, can be applied to liquid nitrogen, under the extremely low temperature such as liquid oxygen, aeronautical field, vacuum medical treatment or hot environment the transmission of digital signal and Power transmission.
Technical scheme is as follows:
A kind of ultravacuum environment composite cable, characterized in that the inner sheath that is set gradually including cable core and outside cable core, outer Sheath, the cable core are twisted by 1 coaxial cable, 6 power transmission lines, and the coaxial cable is located at cable core center, and 6 Power transmission line is uniformly distributed in coaxial cable outer layer；The coaxial cable is from inside to outside successively by conductor, polyimide insulative Layer, woven shield, polyhybrid cover layer are constituted；The polyimides that the power transmission line is arranged by conductor, conductor outer layer Insulating layer is constituted.
Preferably, the conductor of the coaxial cable is formed by the silver-plated copper alloy conductor strand that 7 diameters are 0.10mm, is plated Thickness degree reaches 5um or more.
Preferably, the conductor of the power transmission line is formed by the silver-plated copper conductor strand that 19 diameters are 0.25mm, is plated Thickness degree reaches 5um or more.
Preferably, the polyimide insulative layer of the coaxial cable is that wrapped Kapton forms outside conductor, should Kapton film thickness 0.035mm.
Preferably, the woven shield of the coaxial cable uses diameter to weave for the silver-plated copper conductor of 0.08mm, Thickness of coating reaches 5um or more.
Preferably, the restrictive coating of the coaxial cable is made of wrapped Kapton, and the Kapton is thick Spend 0.05mm.
Preferably, the insulating layer of the power transmission line is by wrapped Kapton, film thickness 0.050mm.
Preferably, the inner sheath is made of wrapped modified micropore polytetrafluoroethylene film, film thickness 0.075mm.
Preferably, the oversheath is woven by reinforced polyether ether ketone fiber filament.
A kind of production technology of above-mentioned ultravacuum environment composite cable, characterized in that the following steps are included:
1) coaxial cable is made:
A. conductor:
Coaxial cable inner conductor uses 7 diameters to form for the high-precision silver-plated copper alloy conductor strand of 0.10mm, and thickness of coating reaches To 5um or more, it is ensured that -269 DEG C of -400 DEG C of temperature range inner conductor impedance Bianization Shuai≤0.2%, and keep good flexibility；
B. insulating layer:
Pass through the Kapton that the wrapped single-side/double-side of suitable wrapping angle applies F4 glue outside coaxial cable inner conductor, it is thin Film thickness 0.035mm, wrapped Duplication 50%, by insulating layer outer diameter control within the scope of 0.94-0.98mm, guarantee conductor and absolutely Edge layer and each interlayer spacings uniform outer appearance are smooth, keep the homogeneity of dielectric constant；
C. it is sintered:
The insulating layer sintering sealing process of coaxial cable uses 100 meters of long sintering furnaces to carry out cycle sintering with 400 DEG C of high temperature, passes through Each wrapped interlayer air be discharged and form sealing after the melting of F4 glue, it is ensured that insulating dielectric layer it is uniform；
D. shielded layer:
Use high-precision diameter for the silver-plated copper conductor of 0.08mm, thickness of coating reaches 5um or more, and passes through suitable angle of weave It is knitted to insulating surface, forms mesh grid, guarantees that outer conductor and insulation interlayer spacings are uniform；
E. restrictive coating:
Coaxial cable restrictive coating is used passes through the polyamides Asia that the wrapped single-side/double-side of suitable wrapping angle applies F4 glue outside shielded layer Amine film, film thickness 0.05mm, wrapped Duplication 52%, by the control of restrictive coating outer diameter within the scope of 1.45-1.55mm；
F. sintering seals:
Restrictive coating sintering sealing process uses 100 meters of long sintering furnaces to carry out cycle sintering with 400 DEG C of high temperature, after being melted by F4 glue Each wrapped interlayer air is discharged and forms sealing, it is ensured that prevents the infiltration of extraneous medium from such as making to the signal transmission of coaxial cable At influence, while playing the role of protecting coaxial cable；
2) power transmission line is made
A. conductor:
The conductor of power transmission line uses 19 diameters for the high-precision silver-plated copper conductor strand of 0.25mm, and thickness of coating reaches 5um More than, it is ensured that -269 DEG C of -400 DEG C of Shuai≤98 temperature range inner conductor Dao electricity or more are to reduce the loss of electric energy；
B. insulating layer:
Power transmission line insulating layer, which will use, to pass through suitable wrapping angle cladding single-side/double-side painting F4 outside power transmission line conductor The Kapton of glue, film thickness 0.050mm, wrapped Duplication 52% exist the control of power transmission line insulating layer outer diameter Within the scope of 1.60-1.70mm, around packet procedures by the suitably wrapped tension of Serve Motor Control, interlayer spacings uniformly keep dielectric The homogeneity of intensity；
C. sintering seals:
Sintering sealing process use 100 meters of long sintering furnaces to carry out cycle sinterings with 400 DEG C of high temperature, by after the melting of F4 glue will respectively around Packet interlayer air is discharged and forms sealing, it is ensured that insulating dielectric layer it is uniform, to ensure dielectric constant and dielectric strength whole Root cable length uniformity；
3) stranding
A. it is twisted:
By 1 coaxial cable and 6 power transmission lines by back twist cable-former that back twist rate is 15% with a constant pitch carry out at Cable, it is ensured that each single line even tension, bending degree are identical in cabling process；
B. inner sheath:
Pass through suitable wrapping angle coating modification expanded microporous polytetra fluoroethylene-EPTEE film, film thickness outside core after stranding 0.075mm, wrapped Duplication 25%, plays the role of tightening and protect, and prevents cable core loose；
C. oversheath:
Reinforced polyether ether ketone fiber filament is woven outside wrapped inner sheath and forms mesh grid, and count 45% plays and tightens protection And facilitate the exchange convection current of medium inside and outside cable.
In the present invention using modified polyimide material, reinforced polyether ether ketone, modified micropore polytetrafluoroethylene (PTFE) (F4)- Good chemical stability, physical property, electrical property and mechanical performance are able to maintain within the scope of 269 DEG C -400 DEG C, 5 × 10-4pa Total mass loss TML < 0.8% in environment, volatilize the vacuum environment of condensable material CVCM < 0.10% under deflation rate≤10-11Pal/s*cm2。 And polyimide material is applied to service life ratio in -269 DEG C of environment and improves an order of magnitude suitable for air, using modification Expanded microporous polytetra fluoroethylene-EPTEE (F4) wrapped inner sheath, reinforced polyether ether ketone weaves oversheath, in favor of in cable bend and cable The convection current of outer medium.
The ultravacuum environment composite cable can be used for a long time in -269 DEG C of -400 DEG C of temperature ranges provides digital signal Transmission and power transmission, which uses using 1 root characteristics impedance 50+/- 2 Ω, to ensure that 3GHZ or less frequency range in signals transmission, Bi in Bo≤1.3, the polyimide insulative coaxial cable with respect to Chuan Dao Shuai≤90% It is collectively constituted with 6 voltage ratings for the power transmission line of 24VDC-1000VDC.Digital signal, another 6 power transmissions can be transmitted Line can provide the power transmission of 24VDC-1000VDC, can also select two as control signal transmssion lines, another 4 can be with The power transmission of offer.It is the institute that can combine control cable, digital signal cable, power cable using the advantages of structure It is functional, wiring space and wiring cost is greatly saved, while digital signal encryption and anti-interference ability are stronger, can construct The comprehensive various message of transmitting of digital communication network make communication system with better function.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ultravacuum environment composite cable of the present invention；
Fig. 2 is process flow chart of the invention；
In figure: the conductor of 1 coaxial cable, the insulating layer of 2 coaxial cables, the shielded layer of 3 coaxial cables, 4 coaxial cables sheath Layer, the conductor of 5 power transmission lines, the insulating layer of 6 power transmission lines, 7 inner sheaths, 8 oversheaths.
Specific embodiment
As shown in Figure 1, a kind of ultravacuum environment composite cable, the interior shield set gradually including cable core and outside cable core 7, oversheath 8 are covered, cable core is twisted by 1 coaxial cable, 6 power transmission lines.Coaxial cable is located at cable core center, and 6 Power transmission line is uniformly distributed in coaxial cable outer layer.
Coaxial cable is from inside to outside successively by conductor 1, polyimide insulative layer 2, woven shield 3, polyhybrid cover Layer 4 constitutes power transmission line and is made of the polyimide insulative layer 6 that conductor 5, conductor outer layer are arranged.
As shown in Fig. 2, a kind of production technology of ultravacuum environment composite cable is as follows:
A. coaxial cable inner conductor is formed using the high-precision silver-plated copper alloy conductor strand of 7 φ 0.10mm, and thickness of coating reaches 5um More than, it is ensured that -269 DEG C of -400 DEG C of temperature range inner conductor impedance Bianization Shuai≤0.2%, and keep good flexibility；
Power transmission line conductor uses the high-precision silver-plated copper conductor strand of 19 φ 0.25mm, and thickness of coating reaches 5um or more, really - 269 DEG C of -400 DEG C of Shuai≤98 temperature range inner conductor Dao electricity or more are protected to reduce the loss of electric energy.
B. coaxial cable insulated layer, which uses, will pass through suitable wrapping angle (45 °) and accurate outside the inner conductor of the coaxial cable Power control and the wrapped single-side/double-side of pitch control system apply the Kapton of F4 glue, film thickness 0.035mm, wrapped heavy Folded rate 50% guarantees that conductor and insulating layer and each interlayer spacings are equal by the control of insulating layer outer diameter in 0.96+/- 0.02mm range Even smooth in appearance keeps the homogeneity of dielectric constant.
C. coaxial cable insulated layer sintering sealing process uses 100 meters of long sintering furnaces to carry out cycle sintering with 400 DEG C of high temperature, Each wrapped interlayer air be discharged and form sealing after being melted by F4 glue, it is ensured that insulating dielectric layer it is uniform, in vacuum environment Total mass loss and volatilization condensable material are few, the homogeneity of dielectric constant are kept, to guarantee the matching of characteristic impedance capacitor.
D. coaxial cable braided outer conductor: using the silver-plated copper conductor of high-precision φ 0.08, and thickness of coating reaches 5um or more, and Pass through suitable angle of weave (450- 55 °) and Precise Tension Control System of Digital be knitted to insulating surface, form mesh grid, guarantee outer Conductor and insulation interlayer spacings are uniform, and count reaches >=97%, shield effectiveness >=95%, it is ensured that when coaxial cable transmits signal Not by the interference of external electromagnetic field, play the role of shielding external electromagnetic field.
E. coaxial cable sheath layer use outside outer conductor through suitable wrapping angle (45 °) and accurate tension force and The wrapped single-side/double-side of pitch control system applies the Kapton of F4 glue, and film thickness 0.05mm, wrapped Duplication 52% will The control of restrictive coating outer diameter is in 1.5+/- 0.05mm range and is sintered sealing.
F. coaxial cable sheath layer sintering sealing process uses 100 meters of long sintering furnaces to carry out cycle sintering with 400 DEG C of high temperature, Each wrapped interlayer air is discharged after being melted by F4 glue and forms sealing, it is ensured that prevents the infiltration of extraneous medium such as to coaxial electrical The signal transmission of cable impacts, while playing the role of protecting coaxial cable.
G. power transmission line insulating layer, which uses, will pass through (45 °) of suitable wrapping angle accurate outside power transmission line conductor Power control and pitch control system cladding lid single-side/double-side apply the Kapton of F4 glue, and film thickness 0.050mm is wrapped Duplication 52% passes through servo electricity around packet procedures by the control of power transmission line insulating layer outer diameter in 1.65+/- 0.05mm range Machine controls suitable wrapped tension, and interlayer spacings uniformly keep the homogeneity of dielectric strength.
H. sintering sealing process uses 100 meters of long sintering furnaces to carry out cycle sintering with 400 DEG C of high temperature, after being melted by F4 glue Each wrapped interlayer air is discharged and forms sealing, it is ensured that insulating dielectric layer it is uniform, to ensure that dielectric constant and dielectric are strong Degree is in whole cable length uniformity.
I. stranding: by 1 coaxial cable and 6 power transmission lines by 15% back twist cable-former with constant pitch progress Stranding, it is ensured that each single line even tension, bending degree are identical in cabling process.
J. wrapped inner sheath: pass through (60 °) of suitable wrapping angle accurate tension forces and section outside the core after stranding Lid modified micropore polytetrafluoroethylene (PTFE) (F4) film, film thickness 0.075mm are coated away from control system, wrapped Duplication 25% plays bundle Tight and protection effect, prevents cable core loose, and modified micropore polytetrafluoroethylene (PTFE) (F4) film can be good in -200 DEG C of -350 DEG C of tools Electrical property, mechanical performance and physical property, have self-lubrication, can ensure in cable bend, cable core and polytetrafluoroethylene (PTFE) (F4) coefficient of friction≤0.05 between film, so that cable core bending modulus having the same.Expanded microporous polytetra fluoroethylene-EPTEE (F4) film around Without sintering after packet, facilitate the convection current of cable inner air and outer air or medium using the gap and micropore of wrapping layer, is conducive to cable Heat dissipation.
K. it weaves oversheath: weaving reinforced polyether ether ketone (PEEK) fiber filament outside wrapped inner sheath and form mesh grid, Count 45% plays the exchange convection current for tightening protection and facilitating medium inside and outside cable.The fiber filament is at -269 DEG C -400 DEG C In range, intensity is (in addition to the concentrated sulfuric acid, being practically insoluble in any conventional chemical reagent) resistant to chemical etching up to 210MPa, is resistant to 109rad radiation resistance (suitable Nuclear Reactor Core radiation intensity), creep resistant does not generate any toxic gas, and high temperature is water-fast Solution is had excellent performance.
Cable performance parameter of the invention:
1. coaxial cable:
Operating temperature: -269 DEG C -400 DEG C；
Characteristic impedance 50+/- 5 Ω；
The Ω of Conductor Impedance :≤330 m/km；
Attenuation rate: 12dB/1000m 10MHZ；
Propagation delay :≤4.8 ns/m；
Spread speed :≤85%；
Bi in Bo≤1.3；
2. power transmission line
Operating temperature: -269 DEG C -400 DEG C；
Voltage rating: 24VDC-1000 VDC；
Breakdown strength: 3000VDC*30min does not puncture；
Current-carrying capacity: 15 A；
Resistance :≤24.6；
3. cable properties
Operating temperature: -200 DEG C -300 DEG C；
The minimum bending radius 5* outside diameter of cable；
5×10-4In pa environment: total mass loss TML < 0.8%, volatilize condensable material CVCM < 0.10%, deflation rate≤10-11Pal/ s*cm2。
Ultravacuum environment composite cable produced by the present invention can be used for digital data transmission and 24 VDC- under vacuum environment 1000 VDC power transmissions or+1 tunnel of digital signal control signal and 24VDC-1000 VDC power transmission.

Claims (10)

1. a kind of ultravacuum environment composite cable, characterized in that the inner sheath that is set gradually including cable core and outside cable core, Oversheath, the cable core are twisted by 1 coaxial cable, 6 power transmission lines, and the coaxial cable is located at cable core center, and 6 Root power transmission line is uniformly distributed in coaxial cable outer layer；The coaxial cable is successively exhausted by conductor, polyimides from inside to outside Edge layer, woven shield, polyhybrid cover layer are constituted；The power transmission line is sub- by the polyamides that conductor, conductor outer layer are arranged Amine insulating layer is constituted.
2. a kind of ultravacuum environment composite cable according to claim 1, characterized in that the conductor of the coaxial cable It is formed by the silver-plated copper alloy conductor strand that 7 diameters are 0.10mm, thickness of coating reaches 5um or more.
3. a kind of ultravacuum environment composite cable according to claim 1, characterized in that the power transmission line is led Body is formed by the silver-plated copper conductor strand that 19 diameters are 0.25mm, and thickness of coating reaches 5um or more.
4. a kind of ultravacuum environment composite cable according to claim 1, characterized in that the polyamides of the coaxial cable Imines insulating layer is that wrapped Kapton forms outside conductor, Kapton film thickness 0.035mm.
5. a kind of ultravacuum environment composite cable according to claim 1, characterized in that the braiding of the coaxial cable Shielded layer uses diameter to weave for the silver-plated copper conductor of 0.08mm, and thickness of coating reaches 5um or more.
6. a kind of ultravacuum environment composite cable according to claim 1, characterized in that the sheath of the coaxial cable Layer is made of wrapped Kapton, Kapton thickness 0.05mm.
7. a kind of ultravacuum environment composite cable according to claim 1, characterized in that the power transmission line it is exhausted Edge layer is by wrapped Kapton, film thickness 0.050mm.
8. a kind of ultravacuum environment composite cable according to claim 1, characterized in that the inner sheath is by wrapped Modified micropore polytetrafluoroethylene film is constituted, film thickness 0.075mm.
9. a kind of ultravacuum environment composite cable according to claim 1, characterized in that the oversheath is poly- by enhancing Ether ether ketone fiber filament weaves.
10. a kind of production technology of ultravacuum environment composite cable according to claim 1 to 9, feature It is, comprising the following steps:
1) coaxial cable is made:
A. conductor:
Coaxial cable inner conductor uses 7 diameters to form for the high-precision silver-plated copper alloy conductor strand of 0.10mm, and thickness of coating reaches To 5um or more, it is ensured that -269 DEG C of -400 DEG C of temperature range inner conductor impedance Bianization Shuai≤0.2%, and keep good flexibility；
B. insulating layer:
Pass through the Kapton that the wrapped single-side/double-side of suitable wrapping angle applies F4 glue outside coaxial cable inner conductor, it is thin Film thickness 0.035mm, wrapped Duplication 50%, by insulating layer outer diameter control within the scope of 0.94-0.98mm, guarantee conductor and absolutely Edge layer and each interlayer spacings uniform outer appearance are smooth, keep the homogeneity of dielectric constant；
C. it is sintered:
The insulating layer sintering sealing process of coaxial cable uses 100 meters of long sintering furnaces to carry out cycle sintering with 400 DEG C of high temperature, passes through Each wrapped interlayer air be discharged and form sealing after the melting of F4 glue, it is ensured that insulating dielectric layer it is uniform；
D. shielded layer:
Use high-precision diameter for the silver-plated copper conductor of 0.08mm, thickness of coating reaches 5um or more, and passes through suitable angle of weave It is knitted to insulating surface, forms mesh grid, guarantees that outer conductor and insulation interlayer spacings are uniform；
E. restrictive coating:
Coaxial cable restrictive coating is used passes through the polyamides Asia that the wrapped single-side/double-side of suitable wrapping angle applies F4 glue outside shielded layer Amine film, film thickness 0.05mm, wrapped Duplication 52%, by the control of restrictive coating outer diameter within the scope of 1.45-1.55mm；
F. sintering seals:
Restrictive coating sintering sealing process uses 100 meters of long sintering furnaces to carry out cycle sintering with 400 DEG C of high temperature, after being melted by F4 glue Each wrapped interlayer air is discharged and forms sealing, it is ensured that prevents the infiltration of extraneous medium from such as making to the signal transmission of coaxial cable At influence, while playing the role of protecting coaxial cable；
2) power transmission line is made
A. conductor:
The conductor of power transmission line uses 19 diameters for the high-precision silver-plated copper conductor strand of 0.25mm, and thickness of coating reaches 5um More than, it is ensured that -269 DEG C of -400 DEG C of Shuai≤98 temperature range inner conductor Dao electricity or more are to reduce the loss of electric energy；
B. insulating layer:
Power transmission line insulating layer, which will use, to pass through suitable wrapping angle cladding single-side/double-side painting F4 outside power transmission line conductor The Kapton of glue, film thickness 0.050mm, wrapped Duplication 52% exist the control of power transmission line insulating layer outer diameter Within the scope of 1.60-1.70mm, around packet procedures by the suitably wrapped tension of Serve Motor Control, interlayer spacings uniformly keep dielectric The homogeneity of intensity；
C. sintering seals:
Sintering sealing process use 100 meters of long sintering furnaces to carry out cycle sinterings with 400 DEG C of high temperature, by after the melting of F4 glue will respectively around Packet interlayer air is discharged and forms sealing, it is ensured that insulating dielectric layer it is uniform, to ensure dielectric constant and dielectric strength whole Root cable length uniformity；
3) stranding
A. it is twisted:
By 1 coaxial cable and 6 power transmission lines by back twist cable-former that back twist rate is 15% with a constant pitch carry out at Cable, it is ensured that each single line even tension, bending degree are identical in cabling process；
B. inner sheath:
Pass through suitable wrapping angle coating modification expanded microporous polytetra fluoroethylene-EPTEE film, film thickness outside core after stranding 0.075mm, wrapped Duplication 25%, plays the role of tightening and protect, and prevents cable core loose；
C. oversheath:
Reinforced polyether ether ketone fiber filament is woven outside wrapped inner sheath and forms mesh grid, and count 45% plays and tightens protection And facilitate the exchange convection current of medium inside and outside cable.
CN201910474943.0A 2019-06-03 2019-06-03 A kind of ultravacuum environment composite cable and its production technology Pending CN110085354A (en)

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CN204463862U (en) * 2015-01-23 2015-07-08 中国电子科技集团公司第二十三研究所 The soft coaxial cable of a kind of resistance to irradiation for spacecraft
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CN207602247U (en) * 2017-11-28 2018-07-10 新亚特电缆股份有限公司 A kind of novel microwave phase-compensated cable
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5245134A (en) * 1990-08-29 1993-09-14 W. L. Gore & Associates, Inc. Polytetrafluoroethylene multiconductor cable and process for manufacture thereof
CN201111990Y (en) * 2007-09-07 2008-09-10 宝胜科技创新股份有限公司 PEEK flame-proof high-temperature resistant control cable
CN203433831U (en) * 2013-08-27 2014-02-12 四川九洲线缆有限责任公司 Super-flexible high temperature-resistant radio-frequency cable
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CN204463862U (en) * 2015-01-23 2015-07-08 中国电子科技集团公司第二十三研究所 The soft coaxial cable of a kind of resistance to irradiation for spacecraft
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CN108039231A (en) * 2017-11-15 2018-05-15 扬州市德友线缆有限公司 Ultravacuum environment polyimide insulative coaxial cable and its manufacturing process
CN207602247U (en) * 2017-11-28 2018-07-10 新亚特电缆股份有限公司 A kind of novel microwave phase-compensated cable
CN210052541U (en) * 2019-06-03 2020-02-11 扬州市德友线缆有限公司 Composite cable for ultra-vacuum environment

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