CN117148527B - Easily-maintained tensile optical cable and stripping method thereof - Google Patents
Easily-maintained tensile optical cable and stripping method thereof Download PDFInfo
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- 239000013307 optical fiber Substances 0.000 claims description 39
- 230000003014 reinforcing effect Effects 0.000 claims description 30
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- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 9
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
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- 229910000831 Steel Inorganic materials 0.000 description 4
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/245—Removing protective coverings of light guides before coupling
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Communication Cables (AREA)
Abstract
The invention discloses an easy-to-repair tensile optical cable and a stripping method thereof. According to the invention, the longitudinal tearing ropes and the transverse tearing ropes are respectively arranged on the outer side and the inner side of the metal braided armor layer, the longitudinal tearing ropes are distributed in sections along the length direction of the metal braided armor layer, the cable cores are wrapped by the transverse tearing ropes, and the directions of the tearing ropes are different, so that the sheath layer and the metal braided armor layer can be rapidly peeled off, the optical cable has the performances of easy peeling and easy maintenance, and meanwhile, the optical cable is light in weight, high in strength, excellent in stretching resistance, bending resistance, water resistance, heat resistance, flame retardance and other physical and mechanical properties, and is suitable for a special optical cable laying environment.
Description
Technical Field
The invention belongs to the technical field of optical cables, and particularly relates to an easy-to-maintain tensile optical cable and a stripping method thereof.
Background
With the rapid development of technology, demands for remote office, online education, video entertainment and the like are increasing, and the updating of fixed broadband and mobile broadband is promoted. Optical cable products are also widely used. The laying environment of the optical cable mainly comprises overhead, pipeline and direct burial, and the laying environment comprises a ship, equipment, underwater and the like, which is more severe, so that the optical cable product is required to have the performances of stretching resistance, water resistance, moisture resistance, bite resistance and the like.
Most optical cables are laid in narrow environments, and partial areas are difficult to reach by people, so that maintenance personnel cannot easily contact the optical cables, and the optical cables also need to be easily stripped and maintained, so that subsequent maintenance and repair are guaranteed, and the service life of the optical cables is prolonged. For example, the marine optical cable is laid in a whole, the allowance of not more than one meter is reserved at the equipment at the two ends of the optical cable, a repeater or a joint is not arranged in the middle, and the marine optical cable is fixed by binding or plugging through a cabin at intervals of less than half a meter, so that the marine optical cable is very difficult to extract and repair.
Chinese patent, publication No. CN101943782a, discloses an easy-to-peel optical cable, which includes an inner sheath, an outer sheath sleeved on the outer periphery of the inner sheath, and an optical transmission unit disposed in the hollow portion of the inner sheath; the outer walls of the inner and outer jackets are provided with tear grooves along the direction of extension of the cable. However, the mechanical properties of the optical cable are greatly affected by the arrangement of the plurality of tearing grooves, the optical cable is only suitable for indoor installation, the application scene is very limited, and meanwhile, when the inner sheath is peeled, two inner reinforcing pieces in the inner sheath are also required to be disconnected, so that the optical cable is not easy to peel quickly. In addition, the central space of the patent is limited, and the twisting structure of the optical cable with large core number cannot be born.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide an easy-to-repair tensile optical cable and a stripping method thereof, which are suitable for a conventional environment and a special optical cable laying environment, such as ships, direct-buried pipelines and the like, and have the advantages of easy stripping, easy repair, high mechanical property and the like.
In order to achieve the above purpose and achieve the above technical effects, the invention adopts the following technical scheme:
the utility model provides an easy maintenance tensile optical cable, includes the cable core and from interior to outside sets gradually in the outside metal braiding armor of cable core and restrictive coating, the cable core is including a plurality of tensile element that is located central point put and around a plurality of optical fiber unit, reinforcement and the filling rope of tensile element transposition, the inside and outside side of metal braiding armor is provided with horizontal tearing rope and vertical tearing rope respectively.
Further, the sum of the numbers of the optical fiber units and the filling ropes is the same as the number of the reinforcing pieces, the center position of the cable core is provided with a tensile element, the optical fiber units and the reinforcing pieces or the optical fiber units, the reinforcing pieces and the filling ropes are twisted around the tensile element to form an approximately circular cable core, and gaps of the cable core are filled with water-blocking binding yarns.
Further, the center position of the cable core is a tensile element, the number of the optical fiber units is four, the number of the filling ropes is four, the number of the four optical fiber units and the number of the filling ropes are uniformly distributed on the periphery of the tensile element, the number of the reinforcing parts is five, three of the reinforcing parts are respectively arranged between two adjacent optical fiber units, the remaining two of the reinforcing parts are respectively arranged between the adjacent optical fiber units and the filling ropes, the optical fiber units, the reinforcing parts and the filling ropes are stranded around the tensile element to form an approximately circular cable core, and water blocking binding yarns are filled in gaps of the cable core.
Further, the center position of the cable core is provided with five tensile elements, the optical fiber units are uniformly distributed on the periphery of the tensile elements, the reinforcing parts are respectively arranged between two adjacent optical fiber units, the optical fiber units and the reinforcing parts are stranded around the tensile elements to form an approximately circular cable core, and water-blocking binding yarns are filled in gaps of the cable core.
Further, the reinforcement is a PBO fiber reinforcement, and the water-blocking binding yarn is SAP resin water-blocking yarn.
Furthermore, a concave-convex stripping groove is formed on the surface of the sheath layer.
Further, the transverse tearing ropes are transversely scattered on the inner side of the metal braided armor layer, and the distance between the transverse tearing ropes is 8-10cm.
Further, the longitudinal tearing ropes are longitudinally extended in a segmented mode along the length direction of the metal braiding armor layer, the length of each longitudinal tearing rope is fixed, the length of each longitudinal tearing rope is 10-20cm, and the head and the tail of each longitudinal tearing rope are connected with the transverse tearing ropes.
Further, a plurality of expansion water-blocking yarns wrapping SAP resin are wound on the tensile element and the cable core.
Further, each optical fiber unit comprises a loose tube and a plurality of optical fibers arranged in the loose tube, and the loose tube is filled with SAP resin powder.
The invention also discloses a stripping method of the easy-to-repair tensile optical cable, which comprises the following steps:
in the maintenance process, firstly, an ODTR is used for determining a fiber breaking position and a stripping range; lightly scratching the bottom end of the concave-convex stripping groove, finding out the thread end of the sectional type longitudinal tearing rope, dragging the longitudinal tearing rope upwards, stripping the sheath layer, and stripping the length to be equal to the length of one longitudinal tearing rope; and hooking the thread end of the transverse tearing rope from the exposed part of the metal braided armor layer, dragging the thread end backwards, and stripping the metal braided armor layer to expose the cable core.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention discloses an easy-to-repair tensile optical cable and a stripping method thereof, which can achieve the purposes of easy stripping and easy repair of the optical cable by arranging two tearing ropes (a longitudinal tearing rope and a transverse tearing rope) in different directions, wherein the transverse tearing rope wraps a cable core, and the longitudinal tearing rope is distributed in a segmented manner, so that the stripping length and stripping position are fixed, the maintenance is convenient, and the rest optical cables are not influenced;
2) The invention discloses an easy-to-repair tensile optical cable and a stripping method thereof, wherein two tearing ropes in different directions are arranged on a metal braided armor layer, so that a sheath layer and the metal braided armor layer can be stripped rapidly;
3) The invention discloses an easy-to-maintain tensile optical cable and a stripping method thereof, wherein novel reinforcing materials such as PBO (Poly-p-phenylene oxide) fibers, metal braiding armor layers and the like are adopted to replace traditional materials, so that the dead weight of the optical cable is reduced, the outer diameter is reduced, and the mechanical and physical properties such as tensile resistance of the optical cable are improved;
4) The invention discloses an easy-to-maintain tensile optical cable and a stripping method thereof, which adopt SAP resin water-blocking yarns to achieve full-dry full-section water blocking, so as to achieve the effects of easier, faster and safer installation.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 3 is a schematic view of a partial structure of a metal braided armor of the present invention;
fig. 4 is an expanded schematic view of the metallic braided armor of the present invention;
FIG. 5 is a schematic diagram of the stripping of the present invention;
wherein: 1. a sheath layer; 2. longitudinally tearing the rope; 3. a metal braided armor layer; 4. a transverse tear line; 5. a reinforcing member; 6. an optical fiber; 7. a loose tube; 8. a tension element; 9. blocking water and binding yarn; 10. a filling rope; 11. concave-convex stripping groove.
Detailed Description
The present invention is described in detail below so that advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and unambiguous the scope of the present invention.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
Example 1
As shown in fig. 1, 3, 4 and 5, an easy-to-repair tensile optical cable comprises a cable core, a metal braided armor layer 3 and a sheath layer 1, wherein the metal braided armor layer 3 and the sheath layer 1 are sequentially arranged outside the cable core from inside to outside, the cable core comprises a tensile element 8 at the center position, an optical fiber unit, a reinforcing piece 5 and a filling rope 10, the optical fiber unit is stranded around the tensile element 8, a water blocking binding yarn 9 is filled in a gap of the cable core, each optical fiber unit comprises a loose tube 7 and a plurality of optical fibers 6 arranged in the loose tube, and a longitudinal tearing rope 2 is arranged between the metal braided armor layer 3 and the sheath layer 1.
The sheath layer 1 adopts a low-smoke halogen-free flame-retardant polyolefin sheath, the reinforcing piece 5 adopts a PBO fiber reinforcing piece, and the water-blocking yarn 9 adopts SAP resin water-blocking yarn.
A plurality of expansion water-blocking yarns wrapping SAP resin are respectively wound on the tensile element 8 and the cable core, a small amount of SAP resin powder is filled in the loose tube 7, so that a full-dry water-blocking structure is achieved, the size of the loose tube 7 can be effectively reduced under a more ideal tension window, and the effects of easier, quicker and safer installation are achieved.
In this embodiment, the central position of the cable core is one tensile element 8, the filling ropes 10 share one, a plurality of optical fibers 6 are respectively sleeved into four loose tubes 7 made of high-modulus plastic, four optical fiber units are formed in a conformal manner, the optical fiber units, the reinforcing members 5 and the filling ropes 10 are twisted around the tensile element 8 to form an approximately circular SZ twisted cable core, the reinforcing members 5 share five, three of the reinforcing members are respectively arranged between two adjacent optical fiber units, the remaining two reinforcing members are respectively arranged between the adjacent optical fiber units and the filling ropes 10, the four optical fiber units and one filling rope 10 are uniformly distributed on the periphery of the tensile element 8, and the water-blocking binding yarns 9 are filled in gaps of the cable core, so that the cable core is compact and full in structure.
The metal braided armor layer 3 is formed by stainless steel wires, the head and the tail are overlapped, and the low-smoke halogen-free flame retardant polyolefin sheath is extruded after the metal braided armor layer 3 is longitudinally wrapped.
When the plastic extruding machine is used for extruding the sheath layer 1, an extrusion molding die with concave-convex stripping grooves is adopted, so that a shallower and flatter concave-convex stripping groove 11 is reserved on the surface of the sheath layer 1, the concave-convex stripping groove 11 extends along the length direction of the sheath layer 1, and when stripping, the friction force between a knife edge and the sheath layer 1 can be enhanced through the concave-convex stripping groove 11, the protection effect is achieved, and the stripping speed is accelerated. The concave-convex stripping groove 11 is matched with the position of the longitudinal tearing rope 2.
The stripping difficulty of the optical cable mainly lies in the sheath layer 1 and the metal braiding armor layer 3, the invention adopts the metal braiding armor layer 3 to replace the traditional stainless steel belt, the effects of reducing the dead weight of the optical cable and reducing the stripping difficulty can be achieved, and simultaneously, the function of preventing mouse from being meshed is achieved, meanwhile, the outer side of the metal braiding armor layer 3 is provided with a longitudinal tearing rope 2, the longitudinal tearing rope 2 extends along the length direction of the metal braiding armor layer 3, the longitudinal tearing rope 2 is made of a fine nylon rope material, the sections longitudinally extend, each section is about 10cm to 20cm, or the required maintenance length is confirmed by a specific structure, the interval is shortened as far as possible, the inner side of the metal braiding armor layer 3 is provided with a transverse tearing rope 4, the transverse tearing rope 4 is transversely spread in the metal braiding armor layer 3 and connected with a cable core, the distance between the transverse tearing rope 4 and the polyethylene fiber material with higher toughness is 8 cm to 10cm, and the longitudinal tearing rope 2 and the transverse tearing rope 4 are designed to be connected with each other in the head-tail of the longitudinal tearing rope 2, and the transverse tearing rope 4 are connected, and the sequential stripping of the sheath layer 1 and the metal braiding armor layer 3 can be achieved during the stripping.
The tensile properties of the cable are mainly borne by the tensile elements 8 and the PBO fibre reinforcement. PBO, namely poly-p-phenylene benzobisoxazole, is a novel reinforcing material for composite materials and belongs to the polyamide family containing heterocyclic aromatic groups. The strength of the PBO fiber product is 5.8GPa, the modulus is 280GPa, and the PBO fiber product is highest in the existing chemical fiber; the heat-resistant temperature reaches 600 ℃, the limiting oxygen index is 68, the flame-retardant fiber is not burnt or shrunk in flame, and the heat resistance and the flame retardance are higher than those of any other organic fiber. The strength, modulus, heat resistance and flame resistance of the PBO fiber, especially the strength of the PBO fiber not only exceeds that of the steel fiber, but also can be superior to that of the carbon fiber. In addition, the PBO fiber is excellent in impact resistance, abrasion resistance and dimensional stability, and is lightweight and flexible, thus being an extremely desirable reinforcement material. The PBO fiber is used as super-performance fiber, has excellent physical and mechanical properties and chemical properties, has strength and modulus which are 2 times that of Kevlar fiber, has the heat-resistant and flame-retardant performance of meta-aramid fiber, and has physical and chemical properties which are completely superior to those of Kevlar fiber which is in the leading position in the field of high-performance fiber. A PBO fiber filament with a diameter of 1 mm can be lifted up by 450 kg, and the strength of the PBO fiber filament is more than 10 times of that of the steel wire fiber. The PBO fiber has higher linear density, can effectively reduce the outer diameter of the optical cable, reduces the dead weight, has higher breaking force than the common aramid fiber, and is more beneficial to improving the tensile resistance of the optical cable. The PBO fiber is stranded together with the loose tube 7 as a cabling unit during production, fills gaps between adjacent loose tubes 7 or between the loose tubes 7 and the filling ropes 10, belongs to flexible reinforcing members, bears the tensile force born by part of the loose tubes 7, counteracts the stress, improves the bending resistance of the optical cable, and prevents the reinforcing members 5 from being repeatedly bent and broken.
A stripping method of an easy-to-repair tensile optical cable comprises the following steps:
during maintenance, a worker can firstly determine the fiber breakage position by using the ODTR; and determining a stripping range, lightly scratching the bottom end of the concave-convex stripping groove 11, finding out the wire end of the sectional type longitudinal tearing rope 2, and dragging the longitudinal tearing rope 2 upwards to strip the sheath layer 1, wherein the stripping length is the length of one longitudinal tearing rope 2. The wire ends of the transverse tearing ropes 4 are hooked from the exposed part of the metal braided armor layer 3, the metal braided armor layer 3 is pulled backwards to be peeled, the cable core can be exposed, the peeling time is short, the efficiency is high, and the cable core can be peeled rapidly without using tools.
Example 2
As shown in fig. 2, 3, 4 and 5, an easy-to-repair tensile optical cable comprises a cable core, a metal braided armor layer 3 and a sheath layer 1, wherein the metal braided armor layer 3 and the sheath layer 1 are sequentially arranged outside the cable core from inside to outside, the cable core comprises a tensile element 8 at the center position, optical fiber units and a reinforcing piece 5, the optical fiber units are twisted around the tensile element 8, a water blocking yarn 9 is filled in gaps of the cable core, each optical fiber unit comprises a loose tube 7 and a plurality of optical fibers 6 arranged in the loose tube, and a longitudinal tearing rope 2 is arranged between the metal braided armor layer 3 and the sheath layer 1.
The sheath layer 1 adopts a low-smoke halogen-free flame-retardant polyolefin sheath, the reinforcing piece 5 adopts a PBO fiber reinforcing piece, and the water-blocking yarn 9 adopts SAP resin water-blocking yarn.
A plurality of expansion water-blocking yarns wrapping SAP resin are respectively wound on the tensile element 8 and the cable core, a small amount of SAP resin powder is filled in the loose tube 7, so that a full-dry structure is achieved, the size of the loose tube 7 can be effectively reduced under a more ideal tension window, and the effects of easier, quicker and safer installation are achieved.
In this embodiment, the center of the cable core is a tensile element 8, a plurality of optical fibers 6 are respectively sleeved into five loose tubes 7 made of high-modulus plastic, so as to form five optical fiber units, the optical fiber units and the reinforcing members 5 are twisted around the tensile element 8 to form an approximately circular SZ twisted cable core, the five optical fiber units are uniformly distributed on the periphery of the tensile element 8, the reinforcing members 5 are five in total and are respectively arranged between two adjacent optical fiber units, and the water-blocking binding yarns 9 are filled in the gaps of the cable core, so that the cable core is compact and full in structure.
And extruding the low-smoke halogen-free flame-retardant polyolefin sheath after longitudinally wrapping the metal braiding armor layer 3. The surface of the sheath layer 1 is reserved with a shallower and flatter concave-convex peeling groove 11 during extrusion molding, and the friction force between the knife edge and the sheath layer 1 can be enhanced through the concave-convex peeling groove 11 during peeling, so that the protection effect is achieved, and the peeling speed is increased.
The stripping difficulty of the optical cable mainly lies in the sheath layer 1 and the metal braided armor layer 3, the invention adopts the metal braided armor layer 3 to replace the traditional stainless steel belt, the effects of reducing the dead weight of the optical cable and reducing the stripping difficulty are achieved, the effect of preventing mouse from being meshed is achieved, meanwhile, the outer side of the metal braided armor layer 3 is provided with a longitudinal tearing rope 2, the longitudinal tearing rope 2 extends along the length direction of the metal braided armor layer 3, the longitudinal tearing rope 2 is made of a fine nylon rope material, the sections longitudinally extend, each section is about 20cm, or the required maintenance length is confirmed by a specific structure, the interval is shortened as much as possible, the inner side of the metal braided armor layer 3 is provided with a transverse tearing rope 4, the transverse tearing rope 4 is transversely spread in the metal braided armor layer 3 and connected with a cable core, the transverse tearing rope 4 is made of a polyethylene fiber material with higher toughness, the interval of the transverse tearing rope 4 is 8-10cm, and the longitudinal tearing rope 2 and the transverse tearing rope 4 are designed, and the head and tail of the longitudinal tearing rope 2 are connected with the transverse tearing rope 4, so that the sequential stripping of the sheath layer 1 and the metal braided armor layer 3 can be achieved.
The tensile properties of the cable are mainly borne by the tensile elements 8 and the PBO fibre reinforcement. PBO, namely poly-p-phenylene benzobisoxazole, is a novel reinforcing material for composite materials and belongs to the polyamide family containing heterocyclic aromatic groups. The strength of the PBO fiber product is 5.8GPa, the modulus is 280GPa, and the PBO fiber product is highest in the existing chemical fiber; the heat-resistant temperature reaches 600 ℃, the limiting oxygen index is 68, the flame-retardant fiber is not burnt or shrunk in flame, and the heat resistance and the flame retardance are higher than those of any other organic fiber. The strength, modulus, heat resistance and flame resistance of the PBO fiber, especially the strength of the PBO fiber not only exceeds that of the steel fiber, but also can be superior to that of the carbon fiber. In addition, the PBO fiber is excellent in impact resistance, abrasion resistance and dimensional stability, and is lightweight and flexible, thus being an extremely desirable reinforcement material. The PBO fiber is used as super-performance fiber, has excellent physical and mechanical properties and chemical properties, has strength and modulus which are 2 times that of Kevlar fiber, has the heat-resistant and flame-retardant performance of meta-aramid fiber, and has physical and chemical properties which are completely superior to those of Kevlar fiber which is in the leading position in the field of high-performance fiber. A PBO fiber filament with a diameter of 1 mm can be lifted up by 450 kg, and the strength of the PBO fiber filament is more than 10 times of that of the steel wire fiber. The PBO fiber has higher linear density, can effectively reduce the outer diameter of the optical cable, reduces the dead weight, has higher breaking force than the common aramid fiber, and is more beneficial to improving the tensile resistance of the optical cable. The PBO fiber is stranded together with the loose tubes 7 as a cabling unit during production, fills gaps between adjacent loose tubes 7, belongs to flexible reinforcing members, bears partial tensile force born by the loose tubes 7, counteracts stress, improves bending resistance of the optical cable, and prevents repeated bending and breaking of the reinforcing members 5.
A stripping method of an easy-to-repair tensile optical cable comprises the following steps:
during maintenance, a worker can firstly determine the fiber breakage position by using the ODTR; and determining a stripping range, lightly scratching the bottom end of the concave-convex stripping groove 11, finding out the wire end of the sectional type longitudinal tearing rope 2, and dragging the longitudinal tearing rope 2 upwards to strip the sheath layer 1, wherein the stripping length is the length of one longitudinal tearing rope 2. The wire ends of the transverse tearing ropes 4 are hooked from the exposed part of the metal braided armor layer 3, the metal braided armor layer 3 is pulled backwards to be peeled, the cable core can be exposed, the peeling time is short, the efficiency is high, and the cable core can be peeled rapidly without using tools.
This example is identical to example 1 except for the differences from example 1.
Parts or structures of the present invention, which are not specifically described, may be existing technologies or existing products, and are not described herein.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present invention.
Claims (6)
1. The stripping method of the easy-to-repair tensile optical cable is characterized by comprising a cable core, a metal braided armor layer and a sheath layer, wherein the metal braided armor layer and the sheath layer are sequentially arranged outside the cable core from inside to outside;
a concave-convex stripping groove is formed in the surface of the sheath layer;
the transverse tearing ropes are transversely spread on the inner side of the metal braided armor layer, and the distance between the transverse tearing ropes is 8-10cm;
the longitudinal tearing ropes are longitudinally extended in a segmented mode along the length direction of the metal braiding armor layer, the length of each longitudinal tearing rope is fixed, the length is 10-20cm, and the head and the tail of each longitudinal tearing rope are connected with the transverse tearing rope;
the peeling method comprises the following steps:
in the maintenance process, firstly, an ODTR is used for determining a fiber breaking position and a stripping range; lightly scratching the bottom end of the concave-convex stripping groove, finding out the thread end of the sectional type longitudinal tearing rope, dragging the longitudinal tearing rope upwards, stripping the sheath layer, and stripping the length to be equal to the length of one longitudinal tearing rope; and hooking the thread end of the transverse tearing rope from the exposed part of the metal braided armor layer, dragging the thread end backwards, and stripping the metal braided armor layer to expose the cable core.
2. The stripping method for easy-to-repair tensile optical cable according to claim 1, wherein the sum of the numbers of the optical fiber units and the filling ropes is the same as the number of the reinforcing members, the central position of the cable core is a tensile element, the optical fiber units and the reinforcing members or the optical fiber units, the reinforcing members and the filling ropes are stranded around the tensile element to form an approximately circular cable core, and the gaps of the cable core are filled with water-blocking binding yarns.
3. The method of stripping an easy-to-repair tensile cable according to claim 2, wherein said reinforcement is a PBO fiber reinforcement and said water-blocking binder is SAP resin water-blocking.
4. The method for stripping an easily maintained tensile optical cable according to claim 1, wherein the longitudinal tearing ropes are longitudinally extended in sections along the length direction of the metal braiding armor layer, the length of each section of the longitudinal tearing ropes is fixed, and the ends of the longitudinal tearing ropes are connected with the transverse tearing ropes.
5. The stripping method for easily maintained tension cable according to claim 1, wherein said tension element and cable core are wrapped with a plurality of expandable water-blocking yarns wrapping SAP resin.
6. The stripping method for easily maintained tensile optical cable according to claim 1, wherein each optical fiber unit comprises a loose tube and a plurality of optical fibers arranged therein, and the loose tube is filled with SAP resin powder.
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| JPH0590737U (en) * | 1992-05-13 | 1993-12-10 | 昭和電線電纜株式会社 | Cable for signal transmission |
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| CN207409308U (en) * | 2017-10-23 | 2018-05-25 | 东莞市爱博通讯科技有限公司 | A kind of metal armouring photoelectric mixed cable |
| CN108922683A (en) * | 2018-07-18 | 2018-11-30 | 湖州格雷电力电缆有限公司 | A kind of cable convenient for removing |
| CN116027505A (en) * | 2023-02-15 | 2023-04-28 | 沈阳亨通光通信有限公司 | Optical cable and manufacturing equipment thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0590737U (en) * | 1992-05-13 | 1993-12-10 | 昭和電線電纜株式会社 | Cable for signal transmission |
| JP2002055236A (en) * | 2000-08-10 | 2002-02-20 | Mitsubishi Cable Ind Ltd | Cable |
| CN101430404A (en) * | 2008-11-06 | 2009-05-13 | 沈群华 | Special-shaped reinforced layer-stranding cable |
| CN203385907U (en) * | 2013-04-28 | 2014-01-08 | 江苏七宝光电集团有限公司 | Mining optical cable for laying vertical shaft |
| CN207409308U (en) * | 2017-10-23 | 2018-05-25 | 东莞市爱博通讯科技有限公司 | A kind of metal armouring photoelectric mixed cable |
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| CN117148527A (en) | 2023-12-01 |
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