CN217332944U - Non-bundle yarn layer stranded optical cable - Google Patents

Abstract

The application relates to a non-bundled yarn layer stranded optical cable, which comprises a cable core, an outer sheath and a light curing layer, wherein the cable core comprises a plurality of loose tubes and a central reinforcement, a plurality of optical fibers are arranged in the loose tubes, the loose tubes are stranded on the central reinforcement, and the outer sheath covers the cable core; meanwhile, a light curing layer is filled between the central reinforcing member and two adjacent loose tubes to bond the central reinforcing member and the loose tubes. This application utilizes the bonding fixed action of light cured layer for it is fixed to need not through pricking the yarn between central reinforcement and the loose sleeve pipe, has avoided making the loose sleeve pipe be pricked flat or influence the transmission performance of loose sleeve pipe well optic fibre because of pricking the yarn, causes disconnected fine hidden danger, has promoted production efficiency simultaneously, when subsequent use, need not to separate the yarn operation, easily opens and shells, and it is more convenient to use, has promoted subsequent construction convenience.

Description

Non-bundle yarn layer stranded optical cable

Technical Field

The application relates to the technical field of optical communication transmission, in particular to a non-bundled yarn layer stranded optical cable.

Background

With the maturity of the optical cable production technology and the competition of the optical cable market, the efficiency and the fineness of the optical cable production and the certain cost advantage are the evaluation indexes of whether a company has core competitiveness or not, and the production of the optical cable is diversified, so that the structure is various, new product research and development are continuously carried out, and the requirements on the production efficiency and the quality of the optical cable are higher and higher.

The traditional optical cable is mainly cabled by twisting loose tubes of optical communication units together through SZ, fixing the twisted state of the loose tubes through binding yarns on the surfaces of the loose tubes, and adding water-blocking yarns or factice on the surfaces of cable cores and central reinforcements to ensure the water-blocking performance of the optical cable. In the actual construction process, the yarns bound on the surface of the cable core and the water blocking elements in the cable core can increase the construction difficulty and cost of the optical cable and reduce the construction efficiency. Because the wall thickness of the loose tube is very small, about 0.3mm, the loose tube is easy to be bundled flat in the yarn bundling process, or when the sheath is used, the thermal shrinkage effect causes the thermal transverse shrinkage deformation of the loose tube, thereby further influencing the transmission performance of optical fibers in the loose tube and even causing hidden troubles of fiber breakage.

In the construction process, the binding yarns need to be cut off and removed, so that the working procedures are increased, inconvenience is brought to construction, and the construction efficiency is influenced to a certain extent. In addition, modern customers prefer to use process-friendly optical cables, and water-blocking processes using ointment-free filled or water-free yarns are more popular.

Disclosure of Invention

The embodiment of the application provides a no bundle yarn layer hank formula optical cable, utilize the bonding fixed action of photocuring layer, it is fixed to need not through pricking the yarn between feasible central reinforcement and the loose sleeve pipe, avoided making the loose sleeve pipe be pricked flat or the transmission performance of loose sleeve pipe heat transverse contraction deformation influence optic fibre in the loose sleeve pipe because of pricking the yarn, cause disconnected fine hidden danger, simultaneously, the production efficiency has been promoted, in subsequent use, need not to untie the yarn operation, easily peel, it is more convenient to use, subsequent construction convenience has been promoted.

The embodiment of the application provides a no binder yarn layer hank formula optical cable, it includes:

the optical fiber cable comprises a cable core and a plurality of optical fibers, wherein the cable core comprises a plurality of loose tubes and a central reinforcing piece, wherein the loose tubes are internally provided with the optical fibers and are twisted on the central reinforcing piece;

the outer sheath covers the cable core;

meanwhile, a light curing layer is filled between the central reinforcing piece and two adjacent loose tubes so as to bond the central reinforcing piece and the loose tubes. Arrange optic fibre in the loose tube, and the loose tube transposition that will be equipped with optic fibre is on central reinforcement, fill the light solidified layer simultaneously between central reinforcement and two adjacent loose tubes, in order to be fixed central reinforcement and loose tube bonding, utilize the bonding fixed action of light solidified layer, it is fixed to make need not through pricking the yarn between central reinforcement and the loose tube, avoided making the loose tube be pricked flat or the thermal transverse shrinkage of loose tube warp the transmission performance who influences optic fibre in the loose tube because of pricking the yarn, lead to the fact disconnected fine hidden danger, the while has promoted production efficiency, in subsequent use, need not to separate the yarn operation, easily open and shell, it is more convenient to use, subsequent construction convenience has been promoted.

In some embodiments, the light curing layer is formed by curing an ultraviolet light curing resin.

In some embodiments, a water blocking layer is arranged between the outer sheath and two adjacent loose tubes.

In some embodiments, the material of the water blocking layer is the same as that of the light curing layer, and the water blocking layer is filled between the outer sheath and two adjacent loose tubes to bond the outer sheath and the loose tubes.

In some embodiments, the light curing layer and the water blocking layer are both formed by curing ultraviolet light curing resin. The material of the water-resistant layer is selected to be the material of the light curing layer, and the advantages are as follows: firstly, the loose tube is stranded on the central reinforcement, has the tendency of untwisting, and the outer sheath and the loose tube are bonded and fixed by utilizing the curing and bonding effect of the water-resistant layer, so that the side, close to the outer side, of the loose tube has binding force, and the untwisting of the loose tube can be prevented; simultaneously, cooperate loose sleeve pipe again and lean on one side of interior firmly fixed on central reinforcement by the photocuring layer, loose sleeve pipe side is fixed on adjacent loose sleeve pipe by the bonding of photocuring layer for loose sleeve pipe is whole firmly fixed, can't move back and turn round, has guaranteed the quality of optical cable. Secondly, the light-cured resin is filled in the outer sheath to play a role of water resistance, and one material has two functions, so that the cost of using the water-resistant yarn is saved. Thirdly, the outer sheath is bonded with the loose tube by using the light-cured resin, so that the shrinkage of the loose tube can be prevented when the sheath is in a sheath process, and the greenhouse risk is reduced.

In some embodiments, the water-blocking layer is made of water-blocking yarn, water-blocking tape or water-blocking powder.

In some embodiments, an opening mark is arranged on the outer surface of the outer sheath, and the opening mark extends along the axial direction of the outer sheath.

In some embodiments, the cable opening mark is formed by protruding the outer surface of the outer sheath, and a knife slot for cutting a knife is further formed in the cable opening mark.

In some embodiments, the loose tube is stranded to the central stiffener using SZ or ZS.

In some embodiments, the material used for the central reinforcement comprises a single metal or fiber reinforced composite FRP; and/or the presence of a gas in the atmosphere,

the outer sheath is made of at least one of Polyethylene (PE), polyvinyl chloride (PVC), polyurethane (TPU), nylon (PA) and flame-retardant polyolefin low-smoke halogen-free LZSH); and/or the presence of a gas in the gas,

the material adopted by the loose tube comprises at least one of polybutylene terephthalate (PBT), Polycarbonate (PC), polypropylene (PP), polyethylene terephthalate (PET) and thermoplastic polyester elastomer (TPEE); and/or the presence of a gas in the atmosphere,

the loose tube is a dry or ointment filled loose tube.

The beneficial effect that technical scheme that this application provided brought includes:

the embodiment of the application provides a no bundle yarn layer hank formula optical cable, it is intraductal to arrange the pine sleeve pipe in with optic fibre, and the pine sleeve pipe transposition that will be equipped with optic fibre is on central reinforcement, fill the photocuring layer simultaneously between central reinforcement and two adjacent pine sleeve pipes, in order to fix central reinforcement and pine sleeve pipe bonding, utilize the bonding fixed action of photocuring layer, it is fixed to make need not through pricking the yarn between central reinforcement and the pine sleeve pipe, avoided making the pine sleeve pipe be pricked flat or the transmission performance of optic fibre in the pine sleeve pipe is warp to the thermal-transverse contraction of pine sleeve pipe because of pricking the yarn, lead to the fact disconnected fine hidden danger, production efficiency has been promoted simultaneously, in subsequent use, need not to separate the yarn operation, easily peel, it is more convenient to use, subsequent construction convenience has been promoted.

The material of the water-resistant layer is selected to be the material of the light curing layer, and the advantages are as follows: firstly, the loose tube is stranded on the central reinforcement, has the tendency of untwisting, and the outer sheath and the loose tube are bonded and fixed by utilizing the curing and bonding effect of the water-resistant layer, so that the side, close to the outer side, of the loose tube has binding force, and the untwisting of the loose tube can be prevented; simultaneously, cooperate loose sleeve pipe again and lean on one side of interior firmly fixed on central reinforcement by the photocuring layer, loose sleeve pipe side is fixed on adjacent loose sleeve pipe by the bonding of photocuring layer for loose sleeve pipe is whole firmly fixed, can't move back and turn round, has guaranteed the quality of optical cable. Secondly, the light-cured resin is filled in the outer sheath, so that the waterproof and water-blocking effects are achieved, one material has two effects, and the cost of using the water-blocking yarn is saved. Thirdly, the outer sheath is bonded with the loose tube by using the light-cured resin, so that the shrinkage of the loose tube can be prevented when the sheath is in a sheath process, and the greenhouse risk is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of a non-bundled yarn layer-stranded optical cable provided in an embodiment of the present application.

In the figure: 1. a cable core; 10. loosening the sleeve; 11. a central reinforcement; 12. an optical fiber; 2. an outer sheath; 3. a light curing layer; 4. a water resistant layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, the present application provides a non-bundled yarn layer stranded optical cable, which includes a cable core 1, an outer jacket 2 and a light curing layer 3, where the cable core 1 includes a plurality of loose tubes 10 and a central strength member 11, where a plurality of optical fibers 12 are disposed in the loose tubes 10, the optical fibers may be single-mode optical fibers or multi-mode optical fibers, the number of the optical fibers may be 1, or may be multiple, for example, 12, 24, and the like, and the loose tubes 10 are stranded on the central strength member 11, the outer jacket 2 covers the cable core 1, and meanwhile, the light curing layer 3 is filled between the central strength member 11 and two adjacent loose tubes 10 to bond the central strength member 11 and the loose tubes 10.

The application provides an optical cable, arrange optic fibre 12 in loose sleeve pipe 10, and the loose sleeve pipe 10 transposition that will be equipped with optic fibre 12 is on central reinforcement 11, fill light cured layer 3 between central reinforcement 11 and two adjacent loose sleeve pipes 10 simultaneously, with fixed with central reinforcement 11 and the bonding of loose sleeve pipe 10, utilize the bonding fixed action of light cured layer 3, it is fixed to need not through pricking the yarn between messenger's central reinforcement 11 and the loose sleeve pipe 10, avoided making loose sleeve pipe 10 be pricked flat or the transmission performance of the thermal transverse shrinkage deformation of loose sleeve pipe optic fibre in the influence loose sleeve pipe because of pricking the yarn, cause disconnected fine hidden danger, production efficiency has been promoted simultaneously, in subsequent use, need not to untie the yarn operation, easily peel, it is more convenient to use, subsequent construction convenience has been promoted.

In some preferred embodiments, the light curing layer 3 is formed by curing ultraviolet curing resin, so that the production is convenient, the production efficiency is improved, and meanwhile, the ultraviolet curing resin has limited viscosity to the loose tube 10, so that the effect of easy stripping of the cable core of the optical cable can be met, and the construction is facilitated.

Referring to fig. 1, in some preferred embodiments, a water-resistant layer 4 is disposed between the outer jacket 2 and two adjacent loose tubes 10, so as to ensure water permeability of the optical cable.

In some examples, the water-blocking layer 4 may employ water-blocking yarn, water-blocking tape, or water-blocking powder.

In other examples, the material of the water-blocking layer 4 is the same as the material of the light-cured layer 3, and the water-blocking layer 4 is filled between the outer sheath 2 and two adjacent loose tubes 10 to bond the outer sheath 2 and the loose tubes 10.

In this embodiment, the material of the water-blocking layer 4 is selected as the material of the light-cured layer 3, for example, the light-cured layer 3 and the water-blocking layer 4 are both formed by curing ultraviolet curable resin, which has the following advantages:

firstly, the loose tube 10 is stranded on the central reinforcement 11, has a tendency of untwisting, and the outer sheath 2 and the loose tube 10 are fixedly bonded by utilizing the curing bonding effect of the water-resistant layer 4, so that the side of the loose tube 10 close to the outer side has binding force, and the untwisting of the loose tube 10 can be prevented; meanwhile, the loose tube 10 is firmly fixed on the central reinforcing part 11 by the photocuring layer 3 on one side close to the inner side, and the side edge of the loose tube 10 is fixedly bonded on the adjacent loose tube 10 by the photocuring layer 3, so that the loose tube 10 is integrally and firmly fixed and cannot be untwisted, and the quality of the optical cable is ensured.

Secondly, the light-cured resin is filled in the outer sheath 2, so that the waterproof and water-blocking effects are achieved, one material has two effects, and the cost of using the water-blocking yarn is saved.

Thirdly, the outer sheath 2 and the loose tube 10 are bonded by light-cured resin, so that the loose tube 10 can be prevented from shrinking when the sheath process is carried out, and the greenhouse risk is reduced.

In some preferred embodiments, the outer sheath 2 is provided with a cable opening indicator on an outer surface thereof, the cable opening indicator extends along an axial direction of the outer sheath 2, and the cable opening indicator may be provided in a plurality of numbers, such as 2 or 4, and is uniformly arranged along a circumferential direction of the outer sheath 2.

The cable opening mark is formed by protruding the outer surface of the outer sheath 2, and a cutter groove for cutting the cutter is further arranged on the cable opening mark, so that the cable opening mark is convenient to cut.

In the present application, the loose tube 10 may be stranded on the central reinforcing member 11 in an SZ or ZS manner.

The material used for the central reinforcement 11 comprises a single metal or fibre reinforced composite FRP. Such as glass fiber reinforced plastic rods GFRP, aramid fiber reinforced plastic rods KFRP, or fiber reinforced plastic flexible rods FFRP.

The outer sheath 2 is made of at least one of Polyethylene (PE), polyvinyl chloride (PVC), polyurethane (TPU), nylon (PA) and flame-retardant polyolefin low-smoke halogen-free LZSH).

The material adopted by the loose tube 10 comprises at least one of polybutylene terephthalate PBT, polycarbonate PC, polypropylene PP, polyethylene terephthalate PET and thermoplastic polyester elastomer TPEE.

The loose tube 10 may be an ointment filled loose tube.

Since customers now prefer to use process-friendly optical cables, it is preferable that the loose tube 10 is a dry loose tube.

When the ultraviolet curing resin coating device is manufactured, ultraviolet curing resin is stored in the sealed lightproof metal material tank, and then the central reinforcing piece passes through the metal material tank so that the ultraviolet curing resin is uniformly coated on the surface of the central reinforcing piece. In the layer stranding production process, a central reinforcing piece passes through a center pipe of a stranding platform, meanwhile, loose sleeves are uniformly distributed, penetrate through holes on the periphery of the center pipe of the stranding platform and are subjected to SZ stranding in the stranding platform, then the central reinforcing piece and the loose sleeves enter a curing furnace through a fixed die, the fixed die entering the curing furnace plays a role in polymerizing the loose sleeves and the central reinforcing piece together, ultraviolet curing resin on the central reinforcing piece is extruded to a cable core gap and the surface of the loose sleeves, the polymerized cable core is subjected to photocuring operation through a UV-LED light source curing furnace to obtain an optical cable filled with photocuring materials, and finally, the cable core is collected together through a take-up stand.

According to the non-binding yarn layer stranded optical cable, on one hand, the loose tube and the central reinforcement in the structure are not required to be fixed through binding yarns, so that the quality hidden danger caused by binding yarns is avoided, and the subsequent construction convenience is improved; meanwhile, the method is controlled through a UV curing cabling process, the non-bundled yarn UV curing stranded optical cable is realized, the production efficiency is greatly improved, and the product cost is reduced. On the other hand, the light-cured resin is filled between the cable cores to replace the traditional ointment for blocking water between the cable cores and the outer sheath and between the central reinforcing piece and the loose tube, and the light-cured resin is very easy to peel when being filled and connected with the loose tube, so that the labor amount of the termination of a construction site is greatly reduced, the optical fiber with a cleaner surface is provided, and the fusion quality of the optical fiber is better.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in this application, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A non-binding yarn layer stranded optical cable, characterized in that it comprises:

the cable comprises a cable core (1), wherein the cable core (1) comprises a plurality of loose tubes (10) and a central reinforcing piece (11), wherein a plurality of optical fibers (12) are arranged in the loose tubes (10), and the loose tubes (10) are stranded on the central reinforcing piece (11);

the outer sheath (2), the outer sheath (2) covers the cable core (1);

meanwhile, a light curing layer (3) is filled between the central reinforcing piece (11) and two adjacent loose tubes (10) so as to bond the central reinforcing piece (11) and the loose tubes (10).

2. The non-binder layer-twisted optical cable of claim 1, wherein:

the light curing layer (3) is formed by curing ultraviolet light curing resin.

3. The non-binder layer stranded optical cable of claim 1, wherein:

and a water-resistant layer (4) is arranged between the outer sheath (2) and two adjacent loose tubes (10).

4. The non-binder layer-twisted optical cable of claim 3, wherein:

the material that the water blocking layer (4) adopts is the same with the material that the photocuring layer (3) adopted, and the water blocking layer (4) is filled between oversheath (2) and two adjacent pine sleeve pipes (10) to the bonding oversheath (2) with pine sleeve pipe (10).

5. The non-binder layer-twisted optical cable of claim 4, wherein:

the light curing layer (3) and the water blocking layer (4) are both formed by curing ultraviolet curing resin.

6. The non-binder layer-twisted optical cable of claim 3, wherein:

the water-blocking layer (4) adopts water-blocking yarns, water-blocking tapes or water-blocking powder.

7. The non-binder layer-twisted optical cable of claim 1, wherein:

be equipped with on the oversheath (2) surface and open the cable sign, it follows to open the cable sign the axial extension of oversheath (2).

8. The non-binder layer stranded optical cable of claim 7, wherein:

the cable opening mark is formed by protruding the outer surface of the outer sheath (2), and a cutter groove for cutting a cutter is further arranged on the cable opening mark.

9. The non-binder layer stranded optical cable of claim 1, wherein:

the loose tube (10) is hinged on the central reinforcing piece (11) in an SZ or ZS mode.

10. The non-binder layer stranded optical cable of claim 1, wherein:

the material adopted by the central reinforcing piece (11) comprises single metal or fiber reinforced composite material FRP; and/or the presence of a gas in the gas,

the outer sheath (2) is made of one of Polyethylene (PE), polyvinyl chloride (PVC), polyurethane (TPU), nylon (PA) and flame-retardant polyolefin low-smoke halogen-free LZSH; and/or the presence of a gas in the atmosphere,

the loose tube (10) adopts one of polybutylene terephthalate PBT, polycarbonate PC, polypropylene PP, polyethylene terephthalate PET and thermoplastic polyester elastomer TPEE; and/or the presence of a gas in the gas,

the loose tube (10) is a dry or ointment filling type loose tube.

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