CN213277485U - Communication wire suitable for vacuum environment - Google Patents
Communication wire suitable for vacuum environment Download PDFInfo
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- CN213277485U CN213277485U CN202022118181.1U CN202022118181U CN213277485U CN 213277485 U CN213277485 U CN 213277485U CN 202022118181 U CN202022118181 U CN 202022118181U CN 213277485 U CN213277485 U CN 213277485U
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Abstract
The utility model discloses a communication wire suitable for vacuum environment, including the cable body, the cable body includes the communication line, the power transmission line, the insulating layer, weaving layer and oversheath, every 2 strands into a diagonal of communication wire, the communication line is equipped with 4 at least, every two and a diagonal interval setting of communication line power transmission line, the power transmission line is equipped with 4 at least, two diagonals and four power output line enclose into an annular structure, the insulating layer closely coats every communication line and power transmission line surface, the weaving layer sets up in the communication line and the power transmission line outside, the oversheath closely coats at the weaving layer surface; the utility model discloses separate the setting with communication line and power transmission line, set up endocyst band layer in the communication line outside, carry out around package exocyst band layer and weaving layer through corresponding production technology, guarantee that communication wire rod signal transmission and power transmission can normal operation under vacuum environment, do not receive vacuum environment outward and become easy brittle failure, filled the trade blank.
Description
Technical Field
The utility model belongs to the technical field of the communication wire rod, especially, be used for the communication wire rod under the vacuum environment, concretely relates to communication wire rod suitable for vacuum environment.
Background
At present, the cable which can be applied to an ultra-vacuum environment in the domestic wire and cable industry is almost blank, when the temperature of the vacuum degree is below 220 ℃ below zero or above 310 ℃, short molecular chains of conventional materials are greatly separated out in the environment, the total mass loss is more than 2.0 percent, and the conventional materials volatilize condensable substances and are easy to crack, so that signal transmission and power transmission in the ultra-vacuum environment can not be realized, and the requirements of military industry, aerospace field and vacuum medical treatment in the aspect are severely restricted.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a following technical scheme:
the utility model provides a communication wire suitable for vacuum environment, includes the cable body, the cable body includes communication line, power transmission line, insulating layer, weaving layer and oversheath, every 2 twists into a diagonal of communication wire, the communication line is equipped with 4 at least, the communication line every 2 and 1 diagonal interval setting of power transmission line, the power transmission line is equipped with 4 at least, 2 diagonal and 4 power output line enclose into an annular structure, the insulating layer closely wraps at every communication line and power transmission line surface, the weaving layer sets up in the communication line and the power transmission line outside, the oversheath closely wraps at the weaving layer surface.
Preferably, an inner wrapping layer is further arranged on the outer sides of the four communication lines, the outer side of the insulating layer is tightly wrapped by the inner wrapping layer, and the inner wrapping layer is made of PTFE and PET.
Preferably, an outer wrapping belt layer is further arranged in the woven layer, the outer wrapping belt layer is tightly wrapped on the outer sides of the communication line and the power transmission line, and the outer wrapping belt layer is made of PTFE and aluminum foil.
Preferably, the cable body is further provided with a filling layer, and the filling layer is filled in the center of an annular structure formed by the two diagonal lines and the four power output lines in a surrounding mode.
Preferably, the communication wire is formed by twisting 7 high-precision silver-plated copper alloy conductors with the diameter of 0.254mm, and the plating thickness is at least 2 microns.
Preferably, the power output line is formed by twisting 19 high-precision silver-plated copper alloy conductors with the diameter of 0.25, and the thickness of a plating layer is at least 3 mu m.
Preferably, the insulating layer is a polyimide film layer.
Preferably, the woven layer is made of polyetheretherketone fiber filaments.
The utility model has the advantages that:
1. the communication wire of the utility model is formed by twisting 7 high-precision silver-plated copper alloy conductors with phi of 0.254mm, the thickness of the plating layer is at least 2 mu m, and the conductor impedance change rate of the communication wire is ensured to be less than or equal to 0.5 percent in the temperature range of-200 ℃ to 300 ℃; the power transmission line is formed by twisting 19 high-precision silver-plated copper alloy conductors with the diameter of 0.25, the thickness of a plating layer is at least 3 mu m, and the conductivity of the conductors of the power transmission line is ensured to be more than or equal to 99 percent within the temperature range of-200 ℃ to 300 ℃ so as to reduce the loss of electric energy;
2. the utility model wraps the communication line and the power transmission line with the insulating layer, ensures the uniform gap between the conductor and the insulating layer and the smooth appearance, and keeps the uniformity of the dielectric constant and the dielectric strength; sintering and sealing are adopted in the process, so that the uniformity of the dielectric of the insulating layer is ensured, and the uniformity of the dielectric constant and the dielectric strength on the length of the whole cable is ensured;
3. the utility model discloses set up in the communication wire after 2 communication lines are twisted in pairs, and 2 communication lines are twisted in pairs with certain pitch, and 2 communication lines adopt constant tension unwrapping wire system to pay off among the twist in pairs, guarantee that 2 communication lines are the same in bending degree when in pairs, thereby guarantee the matching of characteristic impedance electric capacity, the twist in pairs pitch of two line pairs is different (13mm and 21mm), guarantee that communication line pair transmission signal time phase does not have each other interference and crosstalk;
4. the utility model discloses the weaving layer is woven by polyether ether ketone cellosilk and is become the net, and it is 50% to weave density, plays the exchange convection current of the inside and outside medium of the protection of binding and convenient communication wire rod, and this kind of cellosilk is at-200 ℃ to 300 ℃ temperature range, and intensity can reach 200Mpa, and chemical resistance can be able to bear or endure 0Orad irradiation measurement, and creep resistance does not produce any toxic gas, and high temperature hydrolysis resistance can be excellent.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
the embodiment of the utility model provides a mainly contain following element symbol:
the cable comprises a cable body-1, communication lines-2, diagonals-3, power transmission lines-4, an insulating layer-5, an inner wrapping layer-6, an outer wrapping layer-7, a filling layer-8, a braided layer-9 and an outer sheath-10.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, the communication wire suitable for the vacuum environment comprises a cable body 1, wherein the cable body 1 comprises communication wires 2, power transmission wires 4, an insulating layer 5, braided layers 9 and an outer sheath 10, every 2 communication wires are twisted into a diagonal line 3, at least 4 communication wires 2 are arranged, every 2 power transmission wires 4 and 3 diagonal lines of the communication wires 2 are arranged at intervals, at least 4 power transmission wires 4 are arranged, 2 power output wires 3 and 4 diagonal lines enclose an annular structure, the insulating layer 5 is tightly wrapped on the outer surface of each communication wire 2 and each power transmission wire 4, the braided layers 9 are arranged on the outer sides of the communication wires 2 and the power transmission wires 4, and the outer sheath 10 is tightly wrapped on the outer surface of the braided layers 9.
An inner belt layer 6 is further arranged on the outer sides of the four communication wires 2, the outer side of the insulating layer 5 is tightly covered with the inner belt layer 6, and the inner belt layer 6 is made of PTFE and PET.
An outer wrapping belt layer 7 is further arranged in the braided layer 9, the outer wrapping belt layer 7 is tightly wrapped on the outer sides of the communication wire 2 and the power transmission line 4, and the outer wrapping belt layer 7 is made of PTFE and aluminum foil.
The cable body 1 is further provided with a filling layer 8, and the filling layer 8 is filled in the center of an annular structure formed by the two diagonal lines 3 and the four power output lines in a surrounding mode.
The communication wire 2 is formed by twisting 7 high-precision silver-plated copper alloy conductors with the diameter of 0.254mm, and the thickness of a plating layer is at least 2 mu m; the power output line is formed by twisting 19 high-precision silver-plated copper alloy conductors with the diameter of 0.25, and the thickness of a plating layer is at least 3 mu m.
The insulating layer 5 is a polyimide film layer; the woven layer 9 is made of polyetheretherketone fiber.
The production process of the utility model comprises the following steps:
s1, stranded core layer: 7 high-precision silver-plated copper alloy conductors with the diameter of 0.254mm are selected to be stranded to form a communication line 2, and 19 high-precision silver-plated copper alloy conductors with the diameter of 0.25mm are selected to be stranded to form a power transmission line 4;
s2, wrapping an insulating layer 5: lapping an insulating layer 5 and an inner wrapping tape layer 6 on the outer side of the communication wire 2 according to corresponding conditions, wherein the lapping angle of the communication wire 2 to the outer side of the conductor is 40 degrees, the lapping overlapping rate is 40 percent, and the outer diameter of the communication wire 2 to the insulating layer 5 is controlled to be 0.9mm-1.0 mm; wrapping the outer side of the power transmission line 4 with the insulating layer 5 according to corresponding conditions, wherein the wrapping angle of the power transmission line 4 to the outer side of the conductor is 40 degrees, the wrapping overlapping rate is 52 percent, and the outer diameter of the power transmission line 4 to the insulating layer 5 is controlled to be 1.75-1.85 mm;
s3, sintering and sealing the insulating layer 5: placing the wrapped communication wire 2 and the power transmission line 4 in a sintering furnace with the length of 100m, performing high-temperature circulating sintering at 400 ℃, melting the F4 glue, discharging air of each wrapping layer to form sealing, and cooling and taking out the wrapping layers;
s4, pair twisting: carrying out pair twisting on every two communication lines 2 at a certain pitch through high-precision 65% back twist pair twisting to obtain a diagonal line 3;
s5, cabling: cabling 3 and 4 power transmission lines with 2 diagonal lines and the filling layer 8 by a 65% back-twist cabling machine to obtain cabling wires;
s6, wrapping an outer wrapping tape layer 7: after the outer wrapping tape layer 7 is wrapped outside the cable forming wire, weaving polyether-ether-ketone fiber yarns on the surface of the outer wrapping tape layer 7 to form a weaving layer 9, wherein the weaving density is required to be 50%;
s7, extruding the outer sheath 10: and extruding the cabling wire with the braided layer 9 out of the outer sheath 10 through an extruder to obtain a finished communication wire.
The wrapping conditions in the step S6 are that the wrapping angle is 60 °, the thickness of the outer wrapping tape layer 7 is 0.055mm, and the wrapping overlapping rate is 30%.
According to the utility model discloses main technical index or economic indicator that the test obtained as follows:
1. twisted pair:
working temperature: -250 ℃ to 400 ℃;
the characteristic impedance is 90-110 omega;
conductor impedance: ≦ 60 Ω m/km;
working capacitance is 46.0 PF/m-50.0 PF/m;
the attenuation rate is 15dB/100M 10 MHZ;
the relative conductivity is not less than 90%;
propagation delay: less than or equal to 45 ns/100 m;
propagation speed: ≧ 75%;
2. power transmission line
Working temperature: -250 ℃ to 350 ℃;
rated voltage: 30 VDC-1000 VDC;
breakdown strength: 3000VDC 30min, no breakdown;
carrying capacity: 13A;
resistance: 24.6 Ω, ≦ 24;
3. characteristics of the cable
Working temperature: -300 ℃ to 400 ℃;
6×10-4in a Pa environment: total mass loss TML<0.7% volatile condensable substance CVCM<0.15% air release rate is less than or equal to 10- 12Pal/s*cm。
The utility model discloses separate communication line 2 and power transmission line 4 and set up, set up endocyst band layer 6 in the communication line 2 outside, go on around package exocyst band layer 7 and weaving layer 9 through corresponding production technology, guarantee that communication wire rod signal transmission and power transmission can normal operation under vacuum environment, the line does not receive vacuum environment to become easy brittle failure outward, the trade blank has been filled, and 5 colours of insulating layer that set up 4 at least communication lines 2 are white in proper order, green, yellow and orange, 5 colours of insulating layer that set up 4 at least power transmission line 4 are black in proper order, red, brown and blue, convenient the distinguishing in the time of processing, can relax the point pair spot welding and receive on the PC version.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a communication wire rod suitable for vacuum environment which characterized in that: comprises a cable body (1), wherein the cable body (1) comprises a communication line (2), a power transmission line (4), an insulating layer (5), a braided layer (9) and an outer sheath (10), every 2 communication lines are twisted into a diagonal line (3), at least 4 communication lines (2) are arranged, the communication lines (2) and the power transmission lines (4) are arranged at intervals of 2 and 1 diagonal line (3), the power transmission line (4) is at least provided with 4 power transmission lines, 2 power transmission lines and 4 power output lines surround to form an annular structure, the insulating layer (5) is tightly covered on the outer surface of each communication line (2) and each power transmission line (4), the braided layer (9) is arranged on the outer side of the communication line (2) and the power transmission line (4), and the outer sheath (10) is tightly coated on the outer surface of the braided layer (9).
2. The communication wire of claim 1, wherein: an inner wrapping tape layer (6) is further arranged on the outer sides of the four communication wires (2), the outer side of the insulating layer (5) is tightly wrapped by the inner wrapping tape layer (6), and the inner wrapping tape layer (6) is made of PTFE and PET.
3. The communication wire of claim 2, wherein: an outer wrapping belt layer (7) is further arranged in the weaving layer (9), the outer wrapping belt layer (7) is tightly wrapped on the outer sides of the communication line (2) and the power transmission line (4), and the outer wrapping belt layer (7) is made of PTFE and aluminum foil.
4. The communication wire of claim 3, wherein: the cable body (1) is further provided with a filling layer (8), and the filling layer (8) is filled in the center of an annular structure formed by two diagonal lines (3) and four power output lines in a surrounding mode.
5. The communication wire of claim 4, wherein: the communication wire (2) is formed by twisting 7 high-precision silver-plated copper alloy conductors with the diameter of 0.254mm, and the plating thickness is at least 2 mu m.
6. The communication wire of claim 5, wherein: the power output line is formed by twisting 19 high-precision silver-plated copper alloy conductors with the diameter of 0.25, and the thickness of a plating layer is at least 3 mu m.
7. The communication wire of claim 6, wherein: the insulating layer (5) is a polyimide film layer.
8. The communication wire of claim 7, wherein: the woven layer (9) is made of polyether-ether-ketone fiber filaments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022118181.1U CN213277485U (en) | 2020-09-24 | 2020-09-24 | Communication wire suitable for vacuum environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022118181.1U CN213277485U (en) | 2020-09-24 | 2020-09-24 | Communication wire suitable for vacuum environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213277485U true CN213277485U (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022118181.1U Active CN213277485U (en) | 2020-09-24 | 2020-09-24 | Communication wire suitable for vacuum environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213277485U (en) |
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- 2020-09-24 CN CN202022118181.1U patent/CN213277485U/en active Active
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