CN111443448A

CN111443448A - Annular reinforcement resistance to compression optical cable

Info

Publication number: CN111443448A
Application number: CN202010429240.9A
Authority: CN
Inventors: 张少田; 周子健; 何新东; 张福龙; 杨云; 许夺; 石传庆; 王东雪
Original assignee: Hengtong Optic Electric Co Ltd; Shenyang Hengtong Optical Communication Co Ltd
Current assignee: Hengtong Optic Electric Co Ltd; Shenyang Hengtong Optical Communication Co Ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-07-24

Abstract

The application provides an annular reinforcement resistance to compression optical cable. Annular reinforcement resistance to compression optical cable includes center tube, protective layer and annular reinforcement, and the center tube inboard is equipped with optic fibre, and annular reinforcement wraps up in the center tube outside, and the outside of annular reinforcement is located to the protective layer cover. At first, the annular reinforcement wraps up the center tube completely, 360 degrees enclose and close promptly, and when the pressure of arbitrary direction was faced, the annular reinforcement can both play the guard action to the center tube to optical fiber in the center tube plays the effect of resistance to compression protection, has greatly promoted the compressive property of optical cable. Secondly, the thickness of annular reinforcement is far less than the thickness of two current metal pipes, and the material of parcel annular reinforcement is less than the material of parcel metal reinforcement to reduce the cross-sectional area of optical cable, with the construction environment that adapts to more, and save material cost.

Description

Annular reinforcement resistance to compression optical cable

Technical Field

The invention relates to the field of optical cables, in particular to an annular reinforcing member compression-resistant optical cable.

Background

With the development of social science, networks have become an essential component in people's life. The most important component of the network is the optical cable. In order to meet the increasing network requirements, the optical cable laying density in the pipeline is gradually increased, and the optical cable use environment is more complicated.

Therefore, the optical cable has higher and higher requirements on mechanical performance and structural size so as to adapt to complicated and variable use environments, reduce the cost of the optical cable and reduce the construction difficulty. However, the conventional optical cable cannot meet the above requirements, which becomes a technical problem to be solved urgently.

Disclosure of Invention

The object of the present invention includes, for example, providing an annular strength member crush resistant optical cable which can solve the above problems.

The embodiment of the invention provides an annular reinforcement compression-resistant optical cable which comprises a central tube, a protective layer and an annular reinforcement, wherein optical fibers are arranged on the inner side of the central tube, the annular reinforcement is wrapped on the outer side of the central tube, and the protective layer is sleeved on the outer side of the annular reinforcement.

Further, the annular reinforcing member comprises at least 3 fan-shaped reinforcing members, and the at least 3 fan-shaped reinforcing members are spliced and wrapped on the outer side of the central pipe.

Further, the fan-shaped reinforcing member is a metal reinforcing member.

Further, the fan-shaped reinforcing member is a steel reinforcing member or an iron reinforcing member.

Further, the center of the fan-shaped reinforcing piece is a hollow cavity.

Further, the central tube comprises a sleeve, optical fiber fillers and a water blocking layer, the optical fibers are arranged in the sleeve, the optical fiber fillers are filled around the optical fibers in the sleeve, the water blocking layer is arranged on the outer side of the sleeve, and the water blocking layer is attached to the annular reinforcing piece.

Furthermore, the protective layer comprises a binding yarn, a plastic-coated composite belt and an outer sheath, and the binding yarn, the plastic-coated composite belt and the outer sheath are sequentially far away from the annular reinforcing piece.

Further, the protective layer is including pricking yarn, first round steel silk, plastic-aluminum composite belt, inner sheath, steel and plastic composite belt and oversheath, prick the yarn first round steel silk the plastic-aluminum composite belt the inner sheath steel is moulded composite belt and the oversheath is kept away from in proper order annular reinforcement sets up.

Further, the protective layer includes prick yarn, second round steel silk, compound area of plastic-aluminum, inner sheath, third round steel wire and oversheath, prick the yarn second round steel silk compound area of plastic-aluminum the inner sheath third round steel wire and the oversheath is kept away from in proper order annular reinforcement sets up.

Further, the outer sheath is a polyethylene sheath.

The annular reinforcement compression-resistant optical cable provided by the embodiment of the invention has the beneficial effects that: annular reinforcement resistance to compression optical cable includes center tube, protective layer and annular reinforcement, and the center tube inboard is equipped with optic fibre, and annular reinforcement wraps up in the center tube outside, and the outside of annular reinforcement is located to the protective layer cover. At first, the annular reinforcement wraps up the center tube completely, 360 degrees enclose and close promptly, and when the pressure of arbitrary direction was faced, the annular reinforcement can both play the guard action to the center tube to optical fiber in the center tube plays the effect of resistance to compression protection, has greatly promoted the compressive property of optical cable. Secondly, the thickness of annular reinforcement is far less than the thickness of two metal pipes among the prior art, and the material of parcel annular reinforcement is less than the material of parcel metal reinforcement to reduce the cross-sectional area of optical cable, with the construction environment that adapts to more, and save material cost. And finally, the protective layer is arranged to carry out secondary protection on the central tube and the optical fiber in the central tube, so that the service life of the optical cable is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a cross-sectional view of a metal tube fiber optic cable according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a ring strength member crush resistant fiber optic cable provided in accordance with an embodiment of the present application;

FIG. 3 is a cross-sectional view of a hoop reinforcement provided in an embodiment of the present application;

FIG. 4 is a cross-sectional view of one of the annular strength member crush resistant fiber optic cables provided in accordance with an embodiment of the present application;

FIG. 5 is a cross-sectional view of a center tube provided by an embodiment of the present application;

FIG. 6 is a cross-sectional view of a protective layer provided in accordance with an embodiment of the present application;

FIG. 7 is a cross-sectional view of one of the protective layers provided in embodiments of the present application;

fig. 8 is a cross-sectional view of a protective layer provided in an embodiment of the present application.

Icon: 10-a central tube; 20-a metal reinforcement; 30-a protective layer; 40-a ring-shaped reinforcement; 101-an optical fiber; 102-optical fiber filler; 103-a cannula; 104-a water resistant layer; 301-binding yarn; 302-plastic coated composite tape; 303-a first round steel wire; 304-a second round wire; 305-an aluminum plastic composite tape; 306-an inner sheath; 307-steel-plastic composite belts; 308-third round wire; 309-an outer sheath; 401 — sector stiffeners.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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 invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a conventional metal tube optical cable. The conventional optical cable includes an optical fiber 101, an optical fiber filler 102, a jacket 103, a water blocking layer 104, a metal strength member 20, a binder yarn 301, and an outer jacket 309.

The optical fiber 101 is a short term optical fiber, and is a fiber made of glass or plastic, and can be used as a light transmission means. Optical fiber 101 is an important component of an optical cable, and optical fiber 101 has poor mechanical properties and needs to be protected by other components in practice. The purpose of metal strength member 20 is to increase the mechanical performance (including lateral pressure resistance and tensile strength) of optical fiber 101. As shown in fig. 1, the metal reinforcement 20 may be two metal tubes. The sleeve 103 may be a loose sleeve.

After extensive observation and summarization, the inventors found that the cable has limited resistance to compression in other directions laterally and the mechanical properties of the cable are generally exhibited, since the metal strength members 20 are added only on both sides as shown in fig. 1. In the central tube type optical cable structure, the metal reinforcing member 20 needs to be coated by the outer sheath, so that the thickness of the outer sheath is increased, and the cost is directly increased; and the diameter of the optical cable is large, so that the applicability of the optical cable in various complex environments is reduced, and the construction difficulty is increased.

An embodiment of the present application provides an annular strength member compression-resistant optical cable, please refer to fig. 2, and fig. 2 is a schematic cross-sectional view of the annular strength member compression-resistant optical cable. The annular strength member crush resistant cable includes a central tube 10, a protective layer 30, and an annular strength member 40. The optical fiber 101 is disposed on the inner side of the central tube 10, the annular reinforcing member 40 is wrapped on the outer side of the central tube 10, and the protective layer 30 is sleeved on the outer side of the annular reinforcing member 40.

Specifically, an annular reinforcing member 40 is annularly laid outside the base pipe 10. As shown in fig. 2, the annular reinforcement 40 completely surrounds, i.e., encloses 360 degrees, the base pipe 10. Therefore, when facing the pressure in any direction, the annular reinforcing member 40 can protect the central tube 10, so as to protect the optical fiber 101 in the central tube 10 against pressure, and greatly improve the pressure resistance of the optical cable.

As can be seen from fig. 1 and 2, the thickness of the annular reinforcing member 40 is much smaller than the thickness of the two metal pipes (metal reinforcing members 20), and the material surrounding the annular reinforcing member 40 is smaller than the material surrounding the metal reinforcing members 20, thereby reducing the cross-sectional area of the optical cable to accommodate more construction environments and saving material costs.

It should be noted that the central tube 10 shown in fig. 2 includes 5 optical fibers 101, and for reference, the number of optical fibers 101 in the central tube 10 is not limited in the embodiments of the present application.

On the basis of fig. 2, regarding the structure of the annular reinforcing member 40, the embodiment of the present application also provides a possible implementation manner, please refer to fig. 3, in which the annular reinforcing member 40 includes at least 3 fan-shaped reinforcing members 401. Referring to fig. 4, at least 3 fan-shaped reinforcing members 401 are spliced and wrapped around the outer side of the base pipe 10.

As shown in fig. 4, at least 3 fan-shaped reinforcing members 401 are placed parallel to the base pipe 10. At least 3 fan-shaped reinforcements 401 are spliced with each other to form the annular reinforcement 40, and the effect is similar to the steel pipe structure for wrapping the central pipe 10, but welding is not needed, and the process is simple.

Since at least 3 fan-shaped reinforcing members 401 completely wrap the central tube 10, the tensile resistance and bending resistance of the cable are ensured.

The fan-shaped reinforcement 401 may be adjusted to match the dimensional parameters according to the outer diameter of the base pipe 10.

The embodiment of the present application also proposes a possibility for the fan-shaped reinforcing member 401 in fig. 3, and the fan-shaped reinforcing member 401 is a metal reinforcing member. Because metal has a strong hardness, the metal reinforcement can protect the central tube 10 and the optical fibers 101 therein.

Specifically, the sector stiffener 401 is a steel stiffener or an iron stiffener.

The present embodiment also proposes a possible structure for the fan-shaped reinforcing member 401 in fig. 3, and the center of the fan-shaped reinforcing member 401 is a hollow cavity. The fan-shaped reinforcing part 401 of the hollow cavity is made of less materials, and cost is saved.

Possibly, the through holes are formed in the cavity wall of the hollow cavity of the fan-shaped reinforcing piece 401, so that materials are saved on the premise of ensuring the pressure resistance.

On the basis of fig. 2, the present application also provides a possible structure for the base pipe 10, please refer to fig. 5, where the base pipe 10 includes: a ferrule 103, a fiber filler 102, and a water blocking layer 104.

The optical fibers 101 are disposed within the ferrule 103, and the ferrule 103 is filled with the optical fiber filler 102 around the optical fibers 101. The water-resistant layer 104 is arranged on the outer side of the sleeve 103, and the water-resistant layer 104 is attached to the fan-shaped reinforcing piece.

Wherein, the water-blocking layer 104 may be made of water-blocking filler to prevent moisture from entering into the ferrule 103, thereby preventing the optical fiber 101 from being damaged. The optical fiber filler 102 serves to fix the optical fiber 101 from a collision before the optical fiber 101 or the optical fiber 101 collides with the inner wall of the ferrule 103, thereby protecting the optical fiber 101.

With respect to the protective layer 30 in fig. 2, the present embodiment proposes a possible structure, and referring to fig. 6, the protective layer 30 includes a binding yarn 301, a plastic-coated composite tape 302, and an outer sheath 309. The binder yarn 301, the plastic coated composite tape 302 and the outer jacket 309 are arranged in sequence away from the sector stiffener.

The protective layer 30 formed by the binding yarn 301, the plastic-coated composite tape 302 and the outer sheath 309 can perform secondary protection on the central tube 10 and the optical fiber 101 therein, which is beneficial to prolonging the service life of the optical cable.

With reference to fig. 7, the protection layer 30 of fig. 2 also provides a possible structure, and the protection layer 30 includes a binding yarn 301, a first round steel wire 303, an aluminum-plastic composite tape 305, an inner sheath 306, a steel-plastic composite tape 307, and an outer sheath 309. The binding yarn 301, the first round steel wire 303, the aluminum-plastic composite belt 305, the inner sheath 306, the steel-plastic composite belt 307 and the outer sheath 309 are sequentially arranged away from the annular reinforcing piece.

The protective layer 30 formed by the binding yarn 301, the first round steel wire 303, the aluminum-plastic composite tape 305, the inner sheath 306, the steel-plastic composite tape 307 and the outer sheath 309 can perform secondary protection on the central tube 10 and the optical fiber 101 in the central tube, and the service life of the optical cable can be prolonged.

Referring to fig. 8, the protective layer 30 includes a tying yarn 301, a second round steel wire 304, an aluminum-plastic composite tape 305, an inner sheath 306, a third round steel wire 308, and an outer sheath 309, and the tying yarn 301, the second round steel wire 304, the aluminum-plastic composite tape 305, the inner sheath 306, the third round steel wire 308, and the outer sheath 309 are sequentially disposed away from the annular reinforcement.

The protective layer 30 formed by the tying yarn 301, the second round steel wire 304, the aluminum-plastic composite tape 305, the inner sheath 306, the third round steel wire 308 and the outer sheath 309 can perform secondary protection on the central tube 10 and the optical fiber 101 therein, and the service life of the optical cable can be prolonged.

The first round steel wire 303, the second round steel wire 304 and the third round steel wire 308 in the embodiment of the present application may be the same in specification and material, or may be different, and are not limited herein.

The outer jacket 309 in the embodiment of the present application is a polyethylene jacket. Possibly, the outer sheath 309 may be a sheath of other materials.

Possibly, the inner sheath 306 in the embodiment of the present application may be a polyethylene sheath, or may be a sheath made of other materials, which is not limited herein.

In summary, the embodiment of the present invention provides an annular reinforcement compression-resistant optical cable, which includes a central tube, a protective layer and an annular reinforcement, wherein an optical fiber is disposed on an inner side of the central tube, the annular reinforcement wraps an outer side of the central tube, and the protective layer is sleeved on an outer side of the annular reinforcement. At first, the annular reinforcement wraps up the center tube completely, 360 degrees enclose and close promptly, and when the pressure of arbitrary direction was faced, the annular reinforcement can both play the guard action to the center tube to optical fiber in the center tube plays the effect of resistance to compression protection, has greatly promoted the compressive property of optical cable. Secondly, the thickness of annular reinforcement is far less than the thickness of two metal pipes among the prior art, and the material of parcel annular reinforcement is less than the material of parcel metal reinforcement to reduce the cross-sectional area of optical cable, with the construction environment that adapts to more, and save material cost. And finally, the protective layer is arranged to carry out secondary protection on the central tube and the optical fiber in the central tube, so that the service life of the optical cable is prolonged.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides an annular reinforcement resistance to compression optical cable, its characterized in that, annular reinforcement resistance to compression optical cable includes center tube, protective layer and annular reinforcement, the center tube inboard is equipped with optic fibre, annular reinforcement wrap up in the center tube outside, the protective layer cover is located the outside of annular reinforcement.

2. An annular-strength, crush-resistant fiber optic cable according to claim 1, wherein the annular-strength member includes at least 3 fan-shaped strength members, and the at least 3 fan-shaped strength members are splice wrapped around an outside of the central tube.

3. The annular-strength, crush-resistant fiber optic cable of claim 2, wherein the fan-shaped strength members are metal strength members.

4. The annular strength crush-resistant fiber optic cable of claim 3, wherein the fan-shaped strength members are steel strength members or iron strength members.

5. The annular strength crush-resistant fiber optic cable of claim 2, wherein the center of the fan-shaped strength member is a hollow cavity.

6. The annular strength member compression-resistant optical cable of claim 1, wherein the central tube includes a sleeve, optical fiber fillers, and a water blocking layer, the optical fibers are disposed in the sleeve, the optical fiber fillers are filled around the optical fibers in the sleeve, the water blocking layer is disposed outside the sleeve, and the water blocking layer is attached to the annular strength member.

7. The annular strength member compression-resistant optical cable of claim 1, wherein the protective layer comprises a tying yarn, a plastic-coated composite tape, and an outer jacket, the tying yarn, the plastic-coated composite tape, and the outer jacket being sequentially disposed away from the annular strength member.

8. The annular reinforcement compression-resistant optical cable according to claim 1, wherein the protective layer comprises a tying yarn, a first round steel wire, an aluminum-plastic composite belt, an inner sheath, a steel-plastic composite belt and an outer sheath, and the tying yarn, the first round steel wire, the aluminum-plastic composite belt, the inner sheath, the steel-plastic composite belt and the outer sheath are sequentially away from the annular reinforcement.

9. The annular reinforcement compression-resistant optical cable of claim 1, wherein the protective layer comprises a tying yarn, a second round steel wire, an aluminum-plastic composite tape, an inner sheath, a third round steel wire and an outer sheath, and the tying yarn, the second round steel wire, the aluminum-plastic composite tape, the inner sheath, the third round steel wire and the outer sheath are sequentially arranged away from the annular reinforcement.

10. An annular strength crush-resistant optical cable according to any one of claims 7 to 9, wherein the outer sheath is a polyethylene sheath.