CN217060581U - Optical cable - Google Patents

Abstract

The utility model provides an optical cable, including arranging the central enhancement layer at the optical cable center in, in the axial of central enhancement layer, every interval sets up the district of rejecting sunken to the center. The optical cable disclosed by the invention has the advantages that the central reinforced layer is arranged in the center of the optical cable, so that the requirement on the structural stability of the optical cable is met, the tensile strength of the optical cable can be increased, and the mechanical property of the optical cable is improved; meanwhile, the rejecting area which is sunken towards the center is arranged in the axial direction of the central reinforcing layer, so that the structural stability of the optical cable is met, the tensile strength is increased, the consumption of raw materials is reduced, the material waste is avoided, and the cost is reduced.

Description

Optical cable

Technical Field

The present disclosure relates to the field of cable technology, and in particular, to an optical cable.

Background

With the rapid development of social economy and science and technology, the communication industry in China is rapidly developed, the manufacturing technology of the cable industry is mature day by day, the competition is very strong, and optical cable manufacturers increasingly focus on energy conservation, consumption reduction and cost control on the premise of not influencing the performance of the optical cable.

The central reinforcing member of the optical cable is used for enhancing the tensile strength of the optical cable and improving the mechanical property of the optical cable. The material of the central strength member can be metallic or non-metallic and is splice-free within the manufactured length of the cable. The metal Reinforced core is made of phosphated steel wires or other non-hydrogen evolution materials, and the non-metal Reinforced core is made of Fiber Reinforced composite (Fiber Reinforced Polymer, or Fiber Reinforced Plastic, FRP for short).

The optical cable adopting the metal reinforcing member has the advantages that the outer diameter of the sleeve becomes larger along with the increase of the number of cores, the number of the sleeves is increased, the outer diameter of the central reinforcing member must be increased, and the central reinforcing member of the 2-72-core optical cable adopts the phosphated steel wire, so that the structural stability requirement can be met, and the tensile strength requirement of the optical cable can also be met. The central reinforcing member of the 74-288 core optical cable adopts a phosphorized steel wire and Polyethylene (PE) cushion layer to meet the requirements of the two, and simultaneously, the weight of the optical cable is reduced. At present, the PE cushion layer is formed by covering a layer of PE insulating material on the outer protection layer of the phosphating steel wire meeting the tensile strength, the filling effect is mainly achieved, the stability of the optical cable structure is kept, and the material waste and the cost increase can be caused.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides an optical cable to at least solve the above technical problems occurring in the prior art.

An optical cable according to the present disclosure includes: and the central reinforcing layer is arranged in the center of the optical cable, and rejection areas which are sunken towards the center are arranged at certain intervals in the axial direction of the central reinforcing layer.

In an embodiment, the central reinforcing layer includes a reinforcing core and an insulating layer sleeved outside the reinforcing core, and the removing area is an annular groove formed in the insulating layer.

In an embodiment, the rejecting areas are arranged at the same distance in the axial direction of the central reinforcing layer, and each rejecting area has the same shape; or the rejecting areas are arranged at intervals of different distances in the axial direction of the central reinforcing layer, and the shape of each rejecting area is different.

In an embodiment, an axial projection plane is defined as a projection formed along a direction perpendicular to a cross section of the central reinforcing layer, and the shape of the culling area on the axial projection plane is perpendicular to the axial direction of the central reinforcing layer.

In an embodiment, an axial projection plane formed by projection in a direction perpendicular to a cross section of the central reinforcement layer is defined, and on the axial projection plane, the shape of the culling area is inclined at a certain angle relative to the axial direction of the central reinforcement layer.

In an implementation mode, the cable core assembly further comprises cable cores, wherein the cable cores are arranged on the periphery of the central reinforcing layer to form a cable core assembly, and the number of the cable cores in the cable core assembly is 6-24.

In an implementation manner, the optical cable further comprises an outer protection layer arranged at the outermost ring of the optical cable, the outer protection layer comprises a binding yarn in contact with the cable core group, and a metal composite tape and a sheath arranged at the outermost layer of the optical cable are sequentially arranged from the center of the optical cable to the outer side of the binding yarn.

In an embodiment, the cable core further comprises an inner protective layer, and the inner protective layer comprises cable paste filled outside the cable core and between the central reinforcing layer and the binding yarns.

In an implementation manner, the cable core group further comprises an inner protection layer, the inner protection layer covers the periphery of the cable core group, the inner protection layer comprises cable paste, and the tying yarn is arranged on the outer side of the cable paste.

In an embodiment, the cable core comprises optical fibers, filled fiber paste and a loose tube, wherein the optical fibers are distributed in the inner layer of the cable core, the loose tube is arranged at the outermost layer of the cable core, and the filled fiber paste is filled between the optical fibers and the loose tube.

In the disclosure, the optical cable center is provided with the central reinforced layer, so that the requirement on the structural stability of the optical cable is met, the tensile strength of the optical cable can be increased, and the mechanical property of the optical cable is improved; meanwhile, the rejecting area which is sunken towards the center is arranged in the axial direction of the central reinforcing layer, so that the structural stability of the optical cable is met, the tensile strength is increased, the consumption of raw materials is reduced, the material waste is avoided, and the cost is reduced.

It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

in the drawings, like or corresponding reference characters designate like or corresponding parts.

FIG. 1 is a projection view of a central reinforcing layer of a fiber optic cable according to an exemplary embodiment of the present disclosure as projected in a direction perpendicular to the cross-section of the fiber optic cable (the culling areas are shaped identically);

FIG. 2 is an axial cross-sectional view of a central strength layer of an exemplary embodiment of a fiber optic cable according to the present disclosure;

FIG. 3 is a projection view of a central reinforcing layer of a fiber optic cable according to an exemplary embodiment of the present disclosure projected perpendicular to the cross-section of the fiber optic cable (the culling areas are shaped differently);

FIG. 4 depicts a projected view of a central reinforcing layer of a fiber optic cable according to an exemplary embodiment of the present disclosure as projected in a direction perpendicular to the cross-section of the fiber optic cable (with the culling areas being obliquely disposed);

FIG. 5 is a cross-sectional schematic view of an exemplary embodiment of a fiber optic cable of the present disclosure;

fig. 6 is a schematic cross-sectional view of an optical cable according to an exemplary embodiment of the disclosure (an inner protective layer is coated on the periphery of a cable core group).

The numbering in the figures illustrates: 1. a central reinforcing layer; 2. a cable core; 3. an outer protective layer; 4. an inner protective layer; 11. a reinforcement core; 12. an insulating layer; 21. an optical fiber; 22. filling fiber paste; 23. loosening the sleeve; 31. yarn binding; 32. a metal composite tape; 33. a sheath; 41. cable paste; 121. a rejection zone; 122. deepest in the groove.

Detailed Description

In order to make the objects, features and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, 2 and 5, in the optical cable according to an exemplary embodiment of the present disclosure, a central reinforcing layer 1 is disposed at the center, and a removing region 121 recessed toward the center is disposed at a certain distance in the axial direction of the central reinforcing layer 1. The central reinforcing layer 1 includes a reinforcing core 11 and an insulating layer 12 disposed on the outer circumference of the reinforcing core 11, and the removing region 121 is an annular groove formed in the insulating layer 12.

In the present embodiment, the reinforcing core 11 may specifically adopt a metal material, such as a high-strength phosphated steel wire, other non-hydrogen-evolving materials, or the like; or with non-metallic materials such as fibre reinforced composites. The material of the insulating layer 12 on the periphery of the core 11 may be polyethylene or other material capable of producing insulating effect in actual production, and is not limited herein. Because the center of the optical cable is provided with the central reinforced layer 1, the requirement of the structural stability of the optical cable is met, the tensile strength of the optical cable can be increased, and the mechanical property of the optical cable is improved; in addition, set up the district 121 of rejecting sunken to the center in the axial of center enhancement layer 1, and reject district 121 and be the annular groove that forms on insulating layer 12, consequently do not influence the inside performance of strengthening the core 11 of insulating layer 12, when satisfying optical cable structural stability and increase tensile strength, still greatly reduced the consumption of raw and other materials, avoid causing the material waste, reduce cost.

In one embodiment, the plurality of rejection zones 121 are disposed at the same distance in the axial direction on the central reinforcing layer 1, and the plurality of rejection zones 121 have the same shape (see fig. 1); alternatively, the plurality of reject areas 121 may be provided at different intervals in the axial direction on the central reinforcing layer 1, and the shapes of the plurality of reject areas 121 may be different (see fig. 3).

In the present embodiment, the plurality of removing areas 121 are uniformly disposed on the insulating layer 12 at the same distance along the axial direction of the central reinforcing layer 1, and the plurality of removing areas 121 may be annular grooves having the same shape and size, or may be annular grooves having the same shape and size; the plurality of removing areas 121 may be provided on the insulating layer 12 at different intervals in the axial direction of the central reinforcing layer 1, and similarly, the plurality of removing areas 121 may be annular grooves having completely the same shape and size, or may be annular grooves having not completely the same shape and size. The annular groove can be in the shape of grooves of other shapes, and the overall performance of the optical cable is not affected according to the specific requirements in actual production.

In addition to the above-mentioned embodiments, an axial projection plane formed by projecting in a direction perpendicular to the cross section of the central reinforcing layer 1 is defined, and on the axial projection plane, the shape of the culling area 121 is perpendicular to the axial direction of the central reinforcing layer 1 or inclined at a certain angle (see fig. 4).

Preferably, when the plurality of rejecting areas 121 are uniformly arranged on the insulating layer 12 at the same interval along the axial direction of the central reinforcing layer 1, each rejecting area 121 is an annular groove with the same shape and size, and the rejecting area 121 on the axial projection surface is vertical to the axial direction of the central reinforcing layer 1, the insulating layer 12 greatly reduces the raw material consumption and the stability of the central reinforcing layer 1 can be best.

In an implementation manner, the optical cable further includes cable cores 2, and taking the number of the cable cores 2 as 8 (see fig. 5), the cable cores 2 are closely arranged on the periphery of the insulating layer 12 to form a cable core group, and the number of the cable cores 2 in the cable core group can be any number between 6 and 24.

In this embodiment, the number of the cable cores 2 is at least 6 and at most 24, that is, the type of the optical cable applicable to the central reinforcing layer 1 having the reject area 121 is 72-core optical cable to 288-core optical cable. The degree of the central depression of the removing area 121 is increased along with the increase of the number of the cable cores 2, that is, the groove depth of the annular groove is increased, for example, when the number of the cable cores 2 is 6, the 72-core optical cable is adopted, the degree of the central depression of the removing area 121 is minimum, and the depth of the annular groove relative to the notch is shallowest; when the number of the cable cores 2 is 24, the cable is 288, at this time, the concave degree of the eliminating area 121 towards the center is maximum, the depth of the annular groove relative to the notch is deepest, but the deepest part 122 in the groove can not interfere with the reinforced core 11.

In an embodiment, the optical cable further comprises an outer protection layer 3 disposed at the outermost layer of the optical cable, the outer protection layer 3 comprises a binding yarn 31 contacting with the cable core group, and a metal composite tape 32 and a sheath 33 disposed at the outermost layer of the optical cable are sequentially disposed from the center of the optical cable to the outer side of the binding yarn 31.

In this embodiment, the tying yarn 31 may specifically be a high-strength polyester yarn, and the tying yarn 31 enhances the stability of the optical cable structure, and the tying yarn 31 has the characteristics of high strength, low heat recovery rate, small volume, no moisture absorption, high temperature resistance and the like, and plays a role in fixing and tightening the internal material inside the tying yarn 31 in the production of the optical cable. The metal composite tape 32 can protect the cable core 2, so that the cable core 2 is protected from external mechanical action and environmental conditions. In addition, the sheath 33 on the outermost layer of the optical cable may be made of a variety of materials, including but not limited to at least one of polyvinyl chloride, polyethylene, glass fiber reinforced plastic, low smoke and zero halogen, polyurethane, and thermoplastic polyurethane, to protect the internal structure of the optical cable.

In an implementation manner, the optical cable further includes an inner protection layer 4, the inner protection layer 4 includes a cable paste 41, on one hand, the cable paste 41 may be filled outside the cable core 2 and between the central reinforcing layer 1 and the binding yarn 31, wherein the elimination area 121 is also filled with the cable paste 41; on the other hand, the inner protective layer 4 covers the outer periphery of the core pack, and the tying yarn 31 is provided outside the cable paste 41 (see fig. 6).

In the embodiment, the inner protective layer 4 is arranged to prevent dust or water vapor from entering, so that the performance of the optical cable is influenced, and when the cable paste 41 is filled between the central reinforcing layer 1 and the binding yarns 31, the function of supporting the whole structure can be achieved, and the tensile strength is increased; and when the cladding of inner protection layer 4 was in the periphery of core group, can reduce the use of the required material of inner protection layer 4, can select arbitrary scheme to set up inner protection layer 4 as required in actual production.

In one embodiment, the cable core 2 includes optical fibers 21, a filling fiber paste 22 and a loose tube 23, wherein 12 optical fibers 21 are collectively distributed in the inner layer of the cable core 2, the loose tube 23 is disposed on the outermost layer of the cable core 2, and the filling fiber paste 22 is filled between the optical fibers 21 and the loose tube 23. Wherein the filling fiber paste 22 and the loose tube 23 together serve as a protective layer to protect the optical fiber 21 from external influences.

In the description of the present disclosure, it is to be understood that the orientation or positional relationship indicated by the orientation terms is generally based on the orientation or positional relationship shown in the drawings, and is for convenience of description and simplicity of description only, and in the event that the description is not made to the contrary, these orientation terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the disclosure; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …", "above … …", "above … …", "above", and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features to other components or features as illustrated in the figures. It is understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations in use or operation. For example, if an element in the figures is turned over in its entirety, elements "above" or "over" other elements or features would include elements "below" or "beneath" other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be oriented at other different angles (e.g., rotated 90 degrees or other angles) and all such are intended to be included herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the foregoing drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

The present disclosure has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the present disclosure to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, and that many variations and modifications may be made in light of the teaching of the present disclosure, all of which fall within the scope of the claimed disclosure. The scope of the disclosure is defined by the appended claims and equivalents thereof.

Claims (10)

1. An optical cable, comprising: the optical cable comprises a central reinforcing layer (1) arranged at the center of the optical cable, and rejection areas (121) which are sunken towards the center are arranged at certain intervals in the axial direction of the central reinforcing layer (1).

2. Optical cable according to claim 1, characterized in that the central reinforcing layer (1) comprises a reinforcing core (11) and an insulating layer (12) which is sheathed outside the reinforcing core (11), the rejection zone (121) being an annular groove formed on the insulating layer (12).

3. Optical cable according to claim 2, characterized in that the rejection zones (121) are arranged at the same distance each in the axial direction of the central reinforcing layer (1) and in that each of the rejection zones (121) is identical in shape; or the rejection areas (121) are arranged at different intervals in the axial direction of the central reinforcing layer (1), and the shape of each rejection area (121) is different.

4. Optical cable according to claim 3, characterized in that it defines an axial projection plane, formed by projection in a direction perpendicular to the cross section of the central reinforcing layer (1), on which the rejection zone (121) is shaped perpendicularly with respect to the axial direction of the central reinforcing layer (1).

5. Optical cable according to claim 3, characterized in that it defines an axial projection plane, formed by projection in a direction perpendicular to the cross section of the central reinforcing layer (1), on which plane the excluder zones (121) are shaped so as to be inclined at an angle with respect to the axial direction of the central reinforcing layer (1).

6. The optical cable of claim 1, further comprising cable cores (2), wherein the cable cores (2) are arranged on the periphery of the central reinforcing layer (1) to form cable core groups, and the number of the cable cores (2) in the cable core groups is 6-24.

7. Optical cable according to claim 6, further comprising an outer protective layer (3) disposed at the outermost circumference of the optical cable, wherein the outer protective layer (3) comprises a binding yarn (31) contacting with the core group, and a metallic composite tape (32) and a sheath (33) disposed at the outermost layer of the optical cable are sequentially disposed from the center of the optical cable to the outside of the binding yarn (31).

8. Optical cable according to claim 7, further comprising an inner protective layer (4), said inner protective layer (4) comprising a cable paste (41), said cable paste (41) being filled outside said cable core (2) and between said central reinforcing layer (1) and said binder yarn (31).

9. Optical cable according to claim 7, further comprising an inner protective layer (4), wherein the inner protective layer (4) covers the outer circumference of the core pack, the inner protective layer (4) comprises cable paste (41), and the tying yarn (31) is disposed outside the cable paste (41).

10. Optical cable according to claim 6, characterized in that the cable core (2) comprises optical fibers (21), a filler fiber paste (22) and a loose tube (23), the optical fibers (21) being distributed in the inner layer of the cable core (2), the loose tube (23) being placed in the outermost layer of the cable core (2), the filler fiber paste (22) being filled between the optical fibers (21) and the loose tube (23).

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