CN217425764U - Light high-temperature-resistant optical cable - Google Patents
Light high-temperature-resistant optical cable Download PDFInfo
- Publication number
- CN217425764U CN217425764U CN202122715385.8U CN202122715385U CN217425764U CN 217425764 U CN217425764 U CN 217425764U CN 202122715385 U CN202122715385 U CN 202122715385U CN 217425764 U CN217425764 U CN 217425764U
- Authority
- CN
- China
- Prior art keywords
- layer
- optical
- cable
- optical cable
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Communication Cables (AREA)
Abstract
The utility model relates to a light high temperature resistant optical cable, which comprises a cable core, a metal composite armor layer and an outer sheath; the cable core comprises optical units, a central element and a belting layer, wherein the optical units are twisted around the central element, the belting layer is wound outside the optical units and the central element, a metal composite armor layer is sheathed outside the cable core, and an outer sheath layer is arranged outside the metal composite armor layer. The utility model provides a light-duty high temperature resistant optical cable, it is small to have the size, light in weight, bending property is beneficial etc. characteristics, can satisfy normal work tolerance time under 150 ℃ high temperature environment and reach more than 30000 hours, normal work tolerance time reaches more than 1000 hours under 200 ℃ high temperature environment, optical cable resistance to compression and soft bending property have been improved, the problem of optical cable distortion in the use has been solved, optical cable size and reduction optical cable weight have been reduced, satisfy the requirement of laying in the space of narrow and small bending, and guarantee that the performance of optical cable is reliable and stable.
Description
Technical Field
The utility model belongs to the technical field of the optical cable, concretely relates to light-duty high temperature resistant optical cable.
Background
Traditional high temperature resistant optical cable comprises optic fibre, interior sleeve pipe, parcel area, corrugated metal pipe, well sleeve pipe and outer tube, with many optic fibre claddings in interior sleeve pipe the inside, then at the outside of inner tube around the heat-resisting parcel area of package, take outside cladding corrugated metal pipe at the parcel, at the insulating well sleeve pipe of corrugated metal pipe outside extrusion molding, weave the one deck metal at well sleeve pipe outside at last and weave the outer tube.
Although the optical cable with the structure has higher high temperature resistance grade, the optical cable still has a plurality of defects, such as the direct adoption of bare optical fibers or optical fiber ribbons, and the problem of optical fiber breakage easily occurs in use if the optical fibers are not reasonably protected due to the fragile optical fibers, so that the reliability of long-term use is poor. The external of the cable can adopt various protection modes, but has respective problems, some adopt a metal corrugated pipe mode, the manufacturing method is to roll a metal belt into a circle, then laser is used for welding two sides of the metal belt together to form a circular metal pipe, a longitudinal sealing seam is arranged at the welding position, meanwhile, the metal pipe is pressed into a corrugated shape by a rotary mould, the purpose is to increase the flexible bending performance of the metal pipe, although the method adopting the metal corrugated pipe has some improvements on the flexible bending performance of the metal pipe, the problem that the flexible bending performance of the metal corrugated pipe is poor cannot be changed essentially, and the outer diameter of the metal corrugated pipe is larger than 10mm, so the size of the traditional high-temperature resistant cable is larger than 20mm, the bending performance of the metal corrugated pipe is poor, the minimum bending radius of the cable is larger, and is usually 50 times of the outer diameter of the cable, therefore, the method can only be used in the occasions with low requirement on bending performance. Some optical fibers are protected by adding high-temperature resistant materials such as metal corrugated pipes, glass fibers and the like, so that the optical fibers are prevented from being influenced by high temperature of 260 ℃, and the optical cable manufactured by the method has the defects of large structural size, incapability of realizing structural miniaturization, heavy weight and poor bending performance.
At present, the existing user provides requirements for a high-temperature-resistant optical cable such as small size, light weight and soft bending, and can meet the application requirement of long-term work in a high-temperature environment of 150 ℃, but the traditional high-temperature-resistant optical cable can meet the high-temperature use requirement due to the defects of large size, heavy weight, poor bending performance and the like, but the new requirement of laying in a narrow and tortuous space cannot be met due to the restriction of structural size, weight and bending performance, so that the novel light high-temperature-resistant optical cable capable of meeting the new requirement is necessary to be used practically.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the structure size is large, the bending performance is not good, the reliability is not enough and the narrow space can not be used in the high-temperature environment in the prior art.
The specific method comprises the following steps:
a light-duty high temperature resistant optical cable which characterized in that: the cable comprises a cable core, a metal composite armor layer 4 and an outer sheath layer 5; the cable core comprises optical units 1, a central element 2 and a belting layer 3, wherein a plurality of optical units 1 are twisted around one central element 2, the belting layer 3 is wound outside the optical units 1 and the central element 2, a metal composite armor layer 4 is sheathed outside the cable core, and an outer sheath layer 5 is arranged outside the metal composite armor layer 4.
Further, the optical unit 1 sequentially includes an optical fiber 11, a coating layer 12, a tight-buffered layer 13, a reinforcing layer 14, and an inner jacket layer 15 from inside to outside.
Furthermore, the optical fiber is a high-temperature-resistant single-mode optical fiber or a multi-mode optical fiber, and the outer diameter range of the optical fiber is 0.15 mm-0.5 mm;
the coating layer 12 is made of high-temperature-resistant acrylate, silicon rubber and polyimide, and the outer diameter of the coated coating layer ranges from 0.3mm to 0.6 mm;
the tight sleeve layer 13 is made of fluorinated ethylene-propylene polymer FEP, ethylene-tetrafluoroethylene polymer ETFE and tetrafluoroethylene-perfluoroalkoxy vinyl ether polymer PFA, and the outer diameter range after tight sleeve is 0.4-0.9 mm;
the reinforcing layer 14 is made of aramid fiber, polyimide fiber or PBO fiber;
the inner sheath layer 15 is fluorinated ethylene-propylene polymer FEP, ethylene-tetrafluoroethylene polymer ETFE, tetrafluoroethylene-perfluoroalkoxy vinyl ether polymer PFA.
Further, the central element 2 is glass rod FRP, aramid fiber rod KFRP, metal wire or twisted aramid fiber, and the belting layer 3 is made of high temperature resistant polytetrafluoroethylene film or polyimide film.
Further, the metal composite armor layer 4 is a metal spiral armor tube and metal braid composite structure, and is armored outside the cable core, and the material of the metal composite armor layer may be 304 stainless steel, 316 stainless steel or 316L stainless steel.
Further, the outer sheath layer 5 is a protective material extruded outside the armored optical cable, and may adopt fluorinated ethylene-propylene polymer FEP, ethylene-tetrafluoroethylene polymer ETFE, tetrafluoroethylene-perfluoroalkylvinylether polymer PFA, and the wall thickness thereof is preferably 0.3mm or more.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the optical unit is made of the high-temperature-resistant tight-buffered optical fiber with the outer diameter of 0.3-0.6 mm, the high-temperature-resistant tight-buffered optical fiber is formed by compounding the soft coating layer with excellent high-temperature resistance and lower hardness and the plastic tight-buffered layer, the bending property is effectively improved, and meanwhile, the high-temperature-resistant grade of the tight-buffered optical fiber can reach 150 ℃ for a long time and 200 ℃ for a short time.
2. The utility model adopts the coating layer material which is both high temperature resistant and soft by designing the tightly sleeved optical fiber and the aramid armor in the optical unit, thus solving the problem of poor bending performance of the optical fiber in the traditional high temperature resistant optical cable; by adopting multiple protection methods such as optical fiber coating, optical fiber tight sleeve, armored reinforcing layer and extrusion molding inner sheath, the problem that the optical fiber is easy to break when being used in a single branch can be solved; the armored reinforcing layer adopts a reinforcing layer twisting mode, the reinforcing material is single-helically twisted in the period of tightly sleeved optical fibers, the tightly sleeved optical fibers are locked, the tightly sleeved optical fibers are prevented from moving in the using process, the using stability of the optical cable is improved, the optimal armored reinforcing layer twisting pitch is 200-300 mm, the problem that the optical cable is twisted due to the fact that the reinforcing material deflects to one side in the using process is avoided, the inner sheath is extruded around the aramid armor, the influence of the external environment on the optical fibers is isolated, and the reliability and the stability of the optical transmission performance of the optical cable in the using process are guaranteed; because the optical unit can be used as an independent element to assemble the connector, the traditional high-temperature-resistant optical cable is prevented from being additionally provided with protective measures on optical fibers or optical fiber ribbons, and the use convenience of the optical cable is improved.
3. The utility model discloses a strand many optical units on a central component, through the method of design aperture ratio, ordinary optical cable aperture ratio is 30 ~ 40 under the same structure size condition, and the utility model discloses a design aperture ratio is 15 ~ 20, adopts the compliance and the compactibility of less aperture ratio assurance cable core, guarantees optical cable soft bending nature and the accurate control of optic fibre extra length; meanwhile, the cable core is wrapped more compactly by the belting layer, the problem of play of an optical unit in the use process of the optical cable is prevented, the cable core structure is more compact, and the performance is more stable and reliable in the use process.
4. The utility model innovatively uses a metal composite armor layer, which is a composite structure consisting of a metal spiral armor pipe and a metal braided layer, the manufacturing method is that a steel wire is firstly pressed into a flat steel belt, then the steel belt is bent into a spring-shaped spiral circular structure, and reasonable gaps are designed between adjacent steel belts, thereby not only ensuring the continuity and stability of the metal spiral armor pipe, but also ensuring the soft bending performance of the metal spiral armor pipe, the minimum bending radius is 5 times of the outer diameter of the optical cable, and simultaneously ensuring that the optical cable has excellent lateral pressure resistance, but the problem of distortion easily occurs in the using process because the spiral armor pipe is softer, the utility model uniformly weaves a layer of metal braided layer around the spiral armor pipe, utilizes a metal mesh structure to lock the metal spiral armor pipe, avoids the metal spiral armor pipe from moving in the using process, and causes the problem of distortion of the optical cable (the problem that the optical cable adopting the single structure of the metal spiral armor pipe will appear distortion about 200 times of repeated reeling and unreeling, and adopt metal spiral armour pipe and metal braid composite construction's optical cable to receive and release the problem that does not discover the distortion more than 500 times repeatedly), the metal braid can play the effect of increasing the adhesive force between metal spiral armour pipe and the oversheath layer simultaneously, avoids the problem of the crooked oversheath layer fracture of optical cable. And the metal composite armor layer is adopted to manufacture the structure with smaller size, the structure size of the optical cable can be greatly reduced, the purpose of reducing the weight of the optical cable is achieved, and the metal composite armor layer can be used in occasions with higher bending performance requirements.
5. The utility model discloses use the high temperature resistant sheath of extrusion molding one deck outside the metal composite armor, avoid traditional high temperature resistant optical cable outer jacket to adopt the metal to weave the mode, solve the optical cable because metal material's good heat transfer performance in high temperature environment, lead to the optical cable to appear the condition such as loss too big or inefficacy, improve optical cable and use reliability and stability under 150 ℃ high temperature environment for a long time.
6. The utility model provides a light-duty high temperature resistant optical cable, it is little to have the size, light in weight, bending property is beneficial etc. characteristics to can satisfy normal work endure time under 150 ℃ high temperature environment and reach more than 30000 hours, can satisfy simultaneously under 200 ℃ high temperature environment normal work endure time reach more than 1000 hours, the utility model discloses creatively propose adopt metal spiral armour pipe and the compound method of metal weaving layer, both improve optical cable resistance to compression and soft bending property, solve the problem of optical cable distortion in the use again, reduce the optical cable size and reduce optical cable weight simultaneously, satisfy the requirement of laying in narrow and small tortuous space, and guarantee that the performance of optical cable is reliable and stable.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Fig. 1 is a schematic structural view of a light-weight high-temperature-resistant optical cable provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a light unit in an embodiment of the present invention;
fig. 3 is a flow chart of a method for manufacturing a light-weight high-temperature-resistant optical cable according to an embodiment of the present invention;
description of reference numerals:
1. an optical unit (11 optical fiber; 12 coating layer; 13 jacketing layer; 14 reinforcing layer; 15 inner jacket layer); 2. a central element; 3. a belting layer; 4. a metal composite armor layer; 5. an outer jacket layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides a pair of light-duty high temperature resistant optical cable, its structure is as shown in figure 1, include by interior and outer cable core, the metal composite armor 4 and the oversheath layer 5 that sets gradually. The cable core is formed by twisting a plurality of optical units 1 around a central element 2 and wrapping a belting layer 3 outside the cable core.
As shown in fig. 2, the optical unit 1 is a tight-buffered optical fiber surrounded by an armor reinforcing layer 14 and an extruded inner jacket layer 15. The tight-buffered optical fiber comprises an optical fiber and a tight-buffered layer 13, wherein the optical fiber is a high-temperature-resistant single-mode optical fiber or multi-mode optical fiber provided with a coating layer 12, the high-temperature-resistant single-mode optical fiber or multi-mode optical fiber can resist 150 ℃ for a long time and 200 ℃ for a short time, and the preferred range of the outer diameter of the tight-buffered optical fiber is 0.15-0.5 mm. A coating layer 12 material is coated outside the optical fiber by using a photo-coating machine, the coating layer 12 material can adopt high-temperature resistant acrylate, silicon rubber, polyimide and the like, the coating layer can resist 150 ℃ for a long time, and the preferred range of the outer diameter of the coating layer 12 is 0.3 mm-0.5 mm. The tight-buffered layer 13 is uniformly coated outside the prepared coated optical fiber, the materials of the tight-buffered layer 13 can adopt fluorinated ethylene-propylene polymer (FEP), ethylene-tetrafluoroethylene polymer (ETFE) and tetrafluoroethylene-perfluoroalkylvinylether Polymer (PFA), and the preferred range of the outer diameter of the tight-buffered layer 13 is 0.4 mm-0.9 mm. The armor reinforcing layer 14 is uniformly arranged outside the manufactured tight-buffered optical fiber, and aramid fiber, polyimide fiber and PBO fiber are preferably adopted as the material of the reinforcing layer 14. The inner sheath layer 15 may be made of fluorinated ethylene-propylene polymer (FEP), ethylene-tetrafluoroethylene polymer (ETFE), or tetrafluoroethylene-perfluoroalkylvinylether Polymer (PFA). And then an inner jacket layer 15 is uniformly extruded on the surface of the armored optical fiber, wherein the inner jacket layer 15 can adopt fluorinated ethylene-propylene polymer (FEP), ethylene-tetrafluoroethylene polymer (ETFE) and tetrafluoroethylene-perfluoroalkoxy vinyl ether Polymer (PFA). Finally, the light unit 1 is produced.
The central element 2 can be made of glass rod (FRP), aramid rod (KFRP), metal wire or twisted aramid. The prepared plurality of light units 1 are stranded around a central element 2 in a single spiral stranding mode, and the outer part of the light units is wrapped with a belting layer 3, wherein the belting layer 3 can be made of polytetrafluoroethylene films or polyimide films, and the thickness of the belting layer 3 is not particularly limited. And after wrapping the belting layer 3, the cable core is manufactured.
The metal spiral armor pipe and a woven metal braid layer are uniformly armored outside the cable core to serve as a metal composite armor layer 4, and the metal composite armor layer 4 can be made of 304 stainless steel, 316 stainless steel or 316L stainless steel.
An outer sheath layer 6 is extruded outside the armored optical cable, the material of the outer sheath layer can adopt fluorinated ethylene-propylene polymer (FEP), ethylene-tetrafluoroethylene polymer (ETFE) and tetrafluoroethylene-perfluoroalkoxy vinyl ether Polymer (PFA), and the wall thickness of the outer sheath layer is preferably more than 0.3 mm.
As shown in fig. 3, in order to manufacture the light high temperature resistant optical cable of the above structure, the present invention also provides a method for manufacturing the optical cable, comprising the following steps:
step 1: coating the optical fiber;
selecting a standby optical fiber which can be selected from a high-temperature-resistant single-mode optical fiber or a multi-mode optical fiber, wherein the optical fiber has different temperature grades with the common optical fiber, the temperature range of the common optical fiber is-60-85 ℃, the temperature range of the high-temperature-resistant optical fiber is-65-150 ℃ for a long time and 200 ℃ for a short time, the preferable range of the outer diameter of the standby optical fiber is 0.15-0.5 mm, selecting an optical fiber coating machine, uniformly coating a coating layer 12 on the outer part of the optical fiber, and carrying out ultraviolet light curing treatment to obtain the coated optical fiber, wherein the preferable range of the outer diameter of the prepared coated optical fiber is 0.3-0.6 mm; preferably, the tension of the take-up and pay-off wire is 20 CN-80 CN, the temperature of the coating cup is set to be 30-50 ℃, and the coating is uniformly carried out outside the optical fiber to be used at a linear speed of 100-200 m/min; the ultraviolet curing treatment can adopt an ultraviolet lamp, the curing power is i 500W-2000W, and the ultraviolet curing time can be properly adjusted according to the curing power and the linear speed; the coating layer 12 can be made of acrylate, silicon rubber and polyimide;
step 2: tightly sleeving the optical fiber;
uniformly coating a tight sleeve layer 13 on the outside of the prepared coated optical fiber by using a high-temperature extruding machine to prepare the tight sleeve optical fiber, wherein the material of the tight sleeve layer 13 can adopt fluorinated ethylene-propylene polymer (FEP), ethylene-tetrafluoroethylene polymer (ETFE) and tetrafluoroethylene-perfluoroalkoxy vinyl ether Polymer (PFA), and the preferred range of the outer diameter of the prepared tight sleeve optical fiber is 0.4-0.9 mm; preferably, the tension of the take-up and pay-off wire is 0.5N-1.0N, the extrusion temperature is set to be 260-390 ℃, the outside of the prepared coated optical fiber is cooled by a water tank at a linear velocity of 5-15 m/min, and the coated optical fiber is extruded by a pipe extruding type mould;
and step 3: forming a light unit;
uniformly armouring a reinforcing layer 14 outside the prepared tight-buffered optical fiber by using a high-temperature plastic extruding machine, and then uniformly extruding an inner sheath layer 15 to prepare an optical unit with the preferred range of the outer diameter of 1.5 mm-2.5 mm; the reinforcing layer 14 can be made of aramid fiber, polyimide fiber and PBO fiber; the inner sheath layer 15 can be made of fluorinated ethylene-propylene polymer (FEP), ethylene-tetrafluoroethylene polymer (ETFE), tetrafluoroethylene-perfluoroalkoxy vinyl ether Polymer (PFA); preferably, the tension of the take-up and pay-off wire is 5N-10N, the extrusion molding temperature is controlled to be 260-390 ℃, the outside of the prepared tight-buffered optical fiber is cooled by a water tank at a linear speed of 5-15 m/min, and an extrusion pipe type extrusion die is adopted; preferably, the armoured equipment and the extrusion equipment are connected in series to form a one-step forming device; the twisting pitch of the reinforcing layer 14 is 200-300 mm;
and 4, step 4: making a cable core;
selecting a cable former, twisting the plurality of prepared optical units around one central element 2 in a single spiral twisting mode, and simultaneously wrapping a tape layer 3 to prepare a cable core, wherein the preferred range of the outer diameter of the prepared cable core is 3.5-6.0 mm; the central element 2 can be made of glass rods (FRP), aramid fiber rods (KFRP), metal wires or twisted aramid fibers; the material of the belting layer 3 can adopt a polytetrafluoroethylene film or a polyimide film, and the thickness of the belting layer 3 is not particularly limited; preferably, the tension of the take-up and pay-off wire is 5.0N-10.0N, and the cable core is manufactured at a linear speed of 2 m/min-5 m/min;
and 5: manufacturing a metal composite armor layer;
selecting a metal composite armoring machine, uniformly armoring a metal spiral armor pipe outside the prepared cable core, and simultaneously weaving a metal woven layer, wherein the preferred range of the outer diameter is 5.0-8.0 mm; the metal composite armor layer 4 can be made of 304 stainless steel, 316 stainless steel or 316L stainless steel; the tension of the take-up and pay-off wire is 2.0N-10.0N, and the metal composite armor layer is manufactured at the linear speed of 1 m/min-2 m/min;
step 6: extruding an outer sheath layer;
selecting a high-temperature plastic extruding machine, and uniformly extruding an outer sheath layer outside the prepared metal composite armor layer to prepare an optical cable with the preferred range of the outer diameter of 6.0-9.0 mm; cooling by a water tank, and adopting an extrusion type extrusion die; the outer sheath layer can be made of fluorinated ethylene-propylene polymer (FEP), ethylene-tetrafluoroethylene polymer (ETFE) or tetrafluoroethylene-perfluoroalkoxy vinyl ether Polymer (PFA), and the wall thickness of the outer sheath layer is preferably more than 0.3 mm; the tension of the take-up and pay-off line is 10.0N-20.0N, and the outer sheath layer is manufactured at the linear speed of 5 m/min-15 m/min.
To further illustrate the present invention, the following embodiments are provided.
Example 1:
the outer diameter of the selected optical fiber to be used is 165 mu m, an optical fiber coating machine is selected, a coating layer 12 is uniformly coated outside the optical fiber, the coating material is acrylic ester, and an ultraviolet lamp with the curing power of 1500W is adopted for curing treatment under the coating conditions that the take-up tension is 40CN, the pay-off tension is 20CN, the temperature of a coating cup is set to be 30 ℃ and the linear speed of 100m/min, so that the coated optical fiber is prepared, wherein the outer diameter of the prepared coated optical fiber is 0.3 mm.
Selecting a high-temperature plastic extruding machine, uniformly coating the tight sleeve layer 13 outside the prepared coated optical fiber at the linear speed of 5m/min by adopting ETFE as a material of the tight sleeve layer 13, setting the plastic extruding temperature to be 310-350 ℃, cooling by a water tank, extruding by a tube extruding type mould and vacuumizing to prepare the tight sleeve optical fiber, wherein the outer diameter of the prepared tight sleeve optical fiber is 0.5 mm.
Selecting a high-temperature plastic extruding machine, wherein the reinforcing layer 14 is made of aramid fiber, the inner sheath layer 15 is made of ETFE, the winding tension is 8N, the paying-off tension is 5N, the extrusion temperature is controlled to be 320-350 ℃, the aramid fiber reinforcing layer 14 is uniformly armored outside the prepared tight-buffered optical fiber at the linear speed of 5m/min, the inner sheath layer 15 is uniformly extruded, the water tank is used for cooling, and an extruding pipe type extrusion die is adopted to prepare an optical unit with the outer diameter of 1.5 mm; the armoured equipment and the extrusion equipment are connected in series to form a one-step forming device; the reinforcement layer 14 is twisted at a pitch of 200 mm.
Selecting a cable former, wherein a wrapping layer material adopts a polytetrafluoroethylene film, the prepared multiple optical units are stranded around a central element 2 in a single spiral stranding mode at the linear speed of 2m/min under the conditions that the take-up tension is 7N, the pay-off tension is 2N, the pitch diameter ratio is 15, and meanwhile, a cable core is prepared by wrapping the wrapping layer, and the outer diameter of the prepared cable core is 3.5 mm; the material of the central element 2 adopts a glass rod (FRP).
And selecting a metal composite armoring machine, wherein the metal material is 304 stainless steel, uniformly armoring a metal spiral armor pipe outside the prepared cable core, and simultaneously weaving a metal braid layer to prepare the cable with the outer diameter of 5.5 mm.
Selecting a high-temperature plastic extruding machine, wherein an outer sheath layer material adopts ETFE, the wall thickness of the outer sheath layer is 0.3mm, uniformly extruding the outer sheath layer outside the prepared metal composite armor layer, cooling the outer sheath layer by a water tank, adopting an extruding type extruding mould, and manufacturing the optical cable with the outer diameter of 6.5mm at a linear speed of 5-15 m/min, wherein the take-up and pay-off tension is 10.0-20.0N;
the light high-temperature-resistant optical cable prepared by the embodiment can normally work in a high-temperature environment of 150 ℃ for 30000 hours.
Example 2
The procedure of example 1 was repeated, in this example, the outer diameter of the selected optical fiber to be used was 245 μm, the coating material was silicone rubber, and curing was performed with an ultraviolet lamp having a curing power of 1700W under the coating conditions of a take-up tension of 60CN, a pay-off tension of 30CN, a coating cup temperature of 40 ℃, and a linear speed of 150m/min, to obtain a coated optical fiber, and the outer diameter of the obtained coated optical fiber was 0.4 mm.
Selecting a high-temperature plastic extruding machine, adopting FEP as a material of the tight sleeve layer 13, uniformly coating the tight sleeve layer 13 at the take-up tension of 0.9N and the pay-off tension of 0.6N and the extrusion temperature of 310-350 ℃, cooling the prepared coated optical fiber by a water tank, extruding and vacuumizing the coated optical fiber by a tube extruding type die to prepare the tight sleeve optical fiber, wherein the outer diameter of the prepared tight sleeve optical fiber is 0.6 mm.
Selecting a high-temperature plastic extruding machine, wherein a reinforcing layer 14 is made of polyimide fibers, an inner sheath layer 15 is made of FEP, the reinforcing layer 14 is uniformly armored outside the manufactured tight-buffered optical fiber at the take-up tension of 8N and the pay-off tension of 5N and the extrusion temperature of 320-350 ℃, the linear speed of 7m/min is applied to the outside of the manufactured tight-buffered optical fiber, the inner sheath layer 15 is uniformly extruded, the inner sheath layer is cooled by a water tank, and an extrusion tube type extrusion die is adopted to manufacture the optical unit with the outer diameter of 2 mm; the armoured equipment and the extrusion equipment are connected in series to form a one-step forming device.
Selecting a cable former, wherein a wrapping tape layer is made of a polyimide film, the prepared optical units are stranded around a central element 2 in a single spiral stranding mode at the linear speed of 3m/min under the conditions that the take-up tension is 8N, the pay-off tension is 3N, the pitch diameter ratio is 17, and meanwhile, the wrapping tape layer is wrapped to prepare a cable core, and the outer diameter of the prepared cable core is 5 mm; the central element 2 is made of aramid fiber rods (KFRP); the reinforcement layer 14 was twisted at a pitch of 250 mm.
And selecting a metal composite armoring machine, wherein a metal material is 316 stainless steel, uniformly armoring a metal spiral armor pipe outside the prepared cable core, and simultaneously weaving a metal woven layer to prepare the cable core with the outer diameter of 7 mm.
Selecting a high-temperature plastic extruding machine, wherein the material of the outer sheath layer is FEP, the wall thickness of the outer sheath layer is 0.35mm, uniformly extruding the outer sheath layer outside the prepared metal composite armor layer, cooling the outer sheath layer by a water tank, and preparing the optical cable with the outer diameter of 8mm by adopting an extrusion type extrusion die.
The light high-temperature-resistant optical cable manufactured by the embodiment can normally work in a high-temperature environment of 150 ℃ within 30000 hours.
Example 3
The procedure of example 1 was repeated, in this example, the outer diameter of the selected optical fiber to be used was 295 μm, the coating material was silicone rubber, and curing was performed with an ultraviolet lamp having a curing power of 2000W under the coating conditions of a take-up tension of 80CN, a pay-off tension of 40CN, a coating cup temperature of 50 ℃, and a linear speed of 200m/min, to obtain a coated optical fiber, wherein the outer diameter of the obtained coated optical fiber was 0.5 mm.
Selecting a high-temperature plastic extruding machine, uniformly coating the tight-buffered layer 13 at the linear speed of 15m/min outside the prepared coated optical fiber at the extrusion temperature of 340-380 ℃ by adopting PFA as the material of the tight-buffered layer 13 and the take-up tension of 1.0N and the pay-off tension of 0.7N, cooling the tight-buffered layer by a water tank, extruding the tight-buffered layer by a tube-extruding die and vacuumizing the tight-buffered optical fiber, wherein the outer diameter of the prepared tight-buffered optical fiber is 0.8 mm.
Selecting a high-temperature extruding machine, wherein the material of the reinforcing layer 14 is PBO fiber, the material of the inner sheath layer 15 is PFA, the winding tension is 10N, the unwinding tension is 7N, the extruding temperature is controlled to be 340-380 ℃, the reinforcing layer 14 is uniformly armored outside the prepared tight-buffered optical fiber at the linear speed of 10m/min, then the inner sheath layer 15 is uniformly extruded, the inner sheath layer is cooled by a water tank, and the outer diameter of the optical unit is 2.5mm by adopting an extruding mould of an extruding pipe type. The armoured equipment and the extrusion equipment are connected in series to form a one-step forming device.
Selecting a cable former, wherein a wrapping layer material adopts a polyimide film, the prepared optical units are stranded around a central element 2 in a single spiral stranding mode at the linear speed of 5m/min under the conditions that the take-up tension is 10N, the pay-off tension is 4N, the pitch diameter ratio is 20, and meanwhile, the wrapping layer is wound to prepare a cable core, and the outer diameter of the prepared cable core is 6 mm. The central element 2 is made of twisted aramid; the reinforcement layer 14 is twisted at a pitch of 300 mm.
And selecting a metal composite armoring machine, wherein a metal material is 316L stainless steel, uniformly armoring a metal spiral armor pipe outside the prepared cable core, and simultaneously weaving a metal woven layer to prepare the cable core with the outer diameter of 8 mm.
Selecting a high-temperature plastic extruding machine, wherein the material of the outer sheath layer is FEP, the wall thickness of the outer sheath layer is 0.4mm, uniformly extruding the outer sheath layer outside the prepared metal composite armor layer, cooling the outer sheath layer by a water tank, and preparing the optical cable with the outer diameter of 9mm by adopting an extrusion type extrusion die.
The data and indexes of the embodiment are shown by the table
The light high-temperature-resistant optical cable prepared by the embodiment can normally work in a high-temperature environment of 150 ℃ for 30000 hours.
Claims (5)
1. A light-duty high temperature resistant optical cable which characterized in that: comprises a cable core, a metal composite armor layer (4) and an outer sheath layer (5); the cable core includes optical unit (1), central component (2), band layer (3), a plurality of optical unit (1) transposition is around central component (2) optical unit (1) and central component's (2) outside around having band layer (3) the armor is equipped with metal composite armor (4) outside the cable core, and there is one deck oversheath layer (5) outside metal composite armor (4), optical unit (1) includes optic fibre (11), coat (12), tight jacket layer (13), enhancement layer (14), inner sheath layer (15) from inside to outside in proper order.
2. A light-weight, high temperature-resistant optical cable as recited in claim 1, wherein:
the optical fiber is a high-temperature resistant single-mode optical fiber or a multi-mode optical fiber, and the outer diameter range of the optical fiber is 0.15 mm-0.5 mm;
the reinforcing layer (14) is made of aramid fibers, polyimide fibers or PBO fibers.
3. A light-weight, high temperature-resistant optical cable as recited in claim 1, wherein: the central element (2) is a glass rod (FRP), an aramid fiber rod (KFRP), a metal wire or twisted aramid fiber, and the belting layer (3) is a high-temperature-resistant polytetrafluoroethylene film or a polyimide film.
4. A light-weight, high temperature-resistant optical cable as recited in claim 1, wherein: the metal composite armor layer (4) is of a metal spiral armor pipe and metal braid composite structure, is armored outside the cable core, and can be made of 304 stainless steel, 316 stainless steel or 316L stainless steel.
5. A light-weight, high temperature-resistant optical cable as recited in claim 1, wherein: the wall thickness of the outer sheath layer (5) is more than 0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122715385.8U CN217425764U (en) | 2021-11-08 | 2021-11-08 | Light high-temperature-resistant optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122715385.8U CN217425764U (en) | 2021-11-08 | 2021-11-08 | Light high-temperature-resistant optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217425764U true CN217425764U (en) | 2022-09-13 |
Family
ID=83168774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122715385.8U Active CN217425764U (en) | 2021-11-08 | 2021-11-08 | Light high-temperature-resistant optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217425764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114047584A (en) * | 2021-11-08 | 2022-02-15 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Light high-temperature-resistant optical cable and preparation method thereof |
-
2021
- 2021-11-08 CN CN202122715385.8U patent/CN217425764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114047584A (en) * | 2021-11-08 | 2022-02-15 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Light high-temperature-resistant optical cable and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9052486B2 (en) | Fiber optic cable and method of manufacture | |
| US9488793B2 (en) | Combined optical fiber and power cable | |
| US5627932A (en) | Reduced diameter indoor fiber optic cable | |
| US6101305A (en) | Fiber optic cable | |
| US4878732A (en) | Optical communication cable with ribbon waveguide support | |
| US10120152B1 (en) | All dielectric self-supporting fiber optic cable | |
| CN101957484A (en) | Tightly packaged fiber, and dual-core indoor cable and processing method thereof | |
| EP3447557A1 (en) | Full dry type bending-resistant pipeline output cable and method for manufacturing same | |
| CN112198604A (en) | Bundled armored optical cable and preparation method thereof | |
| CN109003713B (en) | Fireproof photoelectric composite cable and implementation method thereof | |
| CN217425764U (en) | Light high-temperature-resistant optical cable | |
| JPS6035705A (en) | Optical cable | |
| CN113900208B (en) | Secondary coated optical unit with curve loose tube, preparation method and optical cable | |
| US10036863B2 (en) | Optical fiber cables with flat ribbon fibers | |
| CN110941058A (en) | Equal-time-delay flexible armored optical cable and manufacturing method thereof | |
| CN114815111A (en) | Steel wire armored loose tube for optical cable | |
| CN201051166Y (en) | Enhanced indoor and outdoor armored soft optical cable | |
| CN216848266U (en) | Aerospace special optical cable | |
| CN114047584A (en) | Light high-temperature-resistant optical cable and preparation method thereof | |
| WO2010101092A1 (en) | Optical fiber cable having single tube | |
| WO2020005866A1 (en) | High density bundled optical fiber cable with preconnectorized drop points | |
| CN114690354A (en) | Special spring flexible optical cable and manufacturing method thereof | |
| CN212624837U (en) | Mooring cable for shipboard platform | |
| CN211348767U (en) | Equal-time-delay flexible armored optical cable | |
| CN112558252A (en) | 5G optical cable and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |