CN215264168U - Loose sleeve layer stranded optical cable - Google Patents

Abstract

The utility model discloses a pine cover layer stranded optical cable, including optical fiber unit, pine sleeve pipe, reinforcement, fine cream, cable core obturator, flame retardant coating, first sheath, armor and second sheath, the optical fiber unit of a plurality of quantity sets up pine sheathed tube center, a plurality of quantity pine sleeve pipe layer twist in the periphery of reinforcement, fine cream is filled in the pine sleeve pipe, the cable core obturator is filled in the outside of pine sleeve pipe, the flame retardant coating first sheath the armor reaches the second sheath sets up from inside to outside and is a plurality of pine sheathed tube periphery. The fireproof performance of the product is greatly enhanced, and the fireproof paint can be widely applied to engineering projects such as large-scale public buildings and high-rise buildings.

Description

Loose sleeve layer stranded optical cable

Technical Field

The utility model relates to an optical transmission system's technical field especially relates to a loose cover layer strand optical cable.

Background

Optical fiber cables (optical fiber cables) are manufactured to meet optical, mechanical, or environmental performance specifications and are telecommunication cable assemblies that utilize one or more optical fibers disposed in a surrounding jacket as the transmission medium and that may be used individually or in groups. The optical cable is mainly composed of optical fiber, plastic protective sleeve and plastic outer skin. The loose-tube layer-stranded optical cable is a round cable core formed by twisting a plurality of tubes containing optical fibers around a central reinforcing member. The layer-stranded optical cable has the structural characteristics that the optical fibers contained in the optical cable are more, and the layer-stranded optical cable is suitable for direct burial and pipeline laying and also can be used for overhead laying.

The loose tube layer stranded optical cable is mainly applied to outdoor laying scenes, and the optical cable can be adopted in certain large public building projects or high-rise buildings, but the existing loose tube layer stranded optical cable is poor in fireproof performance and cannot fully meet the requirements of the special projects. Therefore, the optical cable which can be laid indoors and has a fireproof function is developed and is a powerful guarantee for improving the performance of products. In view of the above, the present inventors have studied and designed a loose tube layer stranded optical cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a loose tube layer stranded optical cable, through set up the flame retardant coating in optical cable periphery, realize the purpose of fire prevention, avoid causing the potential safety hazard of product because of environmental factors such as high temperature high fever in the indoor building.

The utility model provides a loose tube layer hank formula optical cable, including optical fiber unit, loose tube, reinforcement, fine cream, cable core obturator, flame retardant coating, first sheath, armor and second sheath, a plurality of quantity optical fiber unit sets up loose tube's center, a plurality of quantity loose tube layer hank in the periphery of reinforcement, fine cream is filled in the loose tube, the cable core obturator is filled in the outside of loose tube, the flame retardant coating first sheath, armor and the second sheath sets up from inside to outside in a plurality of loose tube's periphery. The fireproof performance and the external force stretching or impact resistance of the product are greatly enhanced, and the fireproof and impact resistant composite material can be widely applied to indoor environments of large public building projects or high-rise buildings.

According to at least one embodiment of the present disclosure, the fire-blocking layer is one or more layers of a mica tape layer. The present disclosure may provide one or more fire resistant layers depending on the particular circumstances of the installation environment to provide fire protection of varying levels of strength.

According to at least one embodiment of the present disclosure, the optical cable further includes a filler cord, and a number of the filler cord layers are stranded around the periphery of the strength member.

According to at least one embodiment of the present disclosure, a plurality of loose tubes are spaced apart such that the loose tubes have an allowance space when stretched or retracted.

According to at least one embodiment of the present disclosure, the optical cable further includes a polyester tape layer, and the polyester tape layer is disposed between the fire-proof layer and the first sheath, and has waterproof, moisture-proof, and coating and shaping functions.

According to at least one embodiment of the present disclosure, the optical cable further includes an aluminum foil longitudinal wrapping tape, and the aluminum foil longitudinal wrapping tape is disposed between the polyester tape layer and the first sheath, and has moisture-proof, shielding and armor functions.

According to at least one embodiment of the present disclosure, the number of the optical fiber units is 2 to 12. The structure of the armor layer provides the protection function against external force, so that the core loading capacity in the optical cable is larger.

According to at least one embodiment of the present disclosure, the fiber optic cable further includes an opening cord disposed between the fire-blocking layer and the first jacket. The cable rope that opens that this disclosure set up can be so that operating personnel more quick when peeling off this disclosure optical cable, and is simple and convenient.

According to at least one embodiment of the present disclosure, air bubbles are distributed inside the first sheath and/or the second sheath. The distributed bubbles are beneficial to reducing the overall weight of the optical cable, and the weight of the optical cable is reduced when the optical cable is laid vertically.

According to at least one embodiment of the present disclosure, the strength member is an FPR non-metal strength member or a metal strength member, which can improve the tensile strength of the optical cable.

According to at least one embodiment of the present disclosure, the center of the reinforcing member is a hollow structure, and the reinforcing member of the present disclosure adopts the hollow structure, so that the self weight is further reduced, and sufficient strength can be provided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a loose tube stranded cable of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the present disclosure discloses a loose tube stranded optical cable, which includes an optical fiber unit 1, a loose tube 2, a strength member 3, a fiber paste 4, a cable core filler 5, a fire-proof layer 6, a first sheath 7, an armor layer 8 and a second sheath 9, wherein 4 optical fiber units are disposed in the center of the loose tube 2, 4 optical fiber units are colored with different colors, for example, the optical fiber units can be respectively bluing, orange, greenish and brown, 4 loose tubes 2 are stranded on the periphery of the strength member 3, and a space is provided between the loose tubes 2, so that the loose tube 2 has a margin space when being stretched or retracted; the fiber paste 4 is a common optical fiber paste on the market, for example, LT-420 type optical fiber filling paste on the market is filled in the loose tube 2, the cable core filling body 5 is a common filling paste on the market, for example, ZLT-60 type filling paste is filled, the cable core filling body 5 is filled outside the loose tube 2, the fire-proof layer 6, the first sheath 7, the armor layer 8 and the second sheath 9 are arranged on the periphery of the 4 loose tubes 2 from inside to outside, the first sheath 7 and the second sheath preferably adopt low-smoke halogen-free sheaths, and the armor layer 8 is one of a steel strip, an aluminum strip, a plastic-coated steel strip or a plastic-coated aluminum strip. The fireproof performance and the external force stretching or impact resistance of the product are greatly enhanced, and the fireproof and impact resistant composite material can be widely applied to indoor environments of large public building projects or high-rise buildings.

The fire barrier layer 6 of the present disclosure is one or more layers of mica tape layers. The present disclosure may provide one or more fire resistant layers depending on the particular circumstances of the installation environment to provide fire protection of varying levels of strength.

The cable further comprises a filling rope 10, wherein 2 filling ropes 10 are stranded on the periphery of the reinforcing part in layers, and the internal structure of the cable is protected against physical compression.

This openly still including opening hawser 11, should open hawser 11 and locate between first sheath 1 and water-blocking layer 4, the hawser that opens that this disclosure set up can make operating personnel peel off this disclosure optical cable time faster, simple and convenient.

The present disclosure further includes a polyester tape layer (not shown), which is disposed between the fire-proof layer and the first sheath, and has waterproof, moisture-proof, and coating and shaping functions.

The present disclosure further includes a longitudinal aluminum foil wrapping tape (not shown) disposed between the polyester tape layer and the first sheath, which has moisture-proof, shielding and armor functions.

The first sheath 7 and/or the second sheath 9 are distributed with bubbles inside. The distributed bubbles are beneficial to reducing the overall weight of the optical cable, and the weight of the optical cable is reduced when the optical cable is laid vertically.

The center of the reinforcing part 3 of the present disclosure is a hollow structure, and the reinforcing part of the present disclosure adopts the hollow structure, so that the self weight is further reduced, and on the other hand, sufficient strength can be provided. The reinforcement 3 is a FPR (fiber reinforced plastic) non-metal reinforcement or metal reinforcement and can improve the tensile strength of the optical cable.

The fireproof, armored and sheathed structure is sequentially arranged outside the traditional layer stranded optical cable from inside to outside, so that the fireproof performance and the external force stretching or impact resistance of the product are greatly enhanced. Through the special structural design, the stability of data transmission of the product is ensured. The method can be widely applied to indoor environments of large public building projects or high-rise buildings.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. The loose tube layer stranded optical cable is characterized by comprising optical fiber units, a loose tube, a reinforcing piece, fiber paste, a cable core filling body, a fireproof layer, a first sheath, an armor layer and a second sheath, wherein a plurality of optical fiber units are arranged at the center of the loose tube, a plurality of loose tube layers are stranded on the periphery of the reinforcing piece, the fiber paste is filled in the loose tube, the cable core filling body is filled outside the loose tube, and the fireproof layer, the first sheath, the armor layer and the second sheath are arranged on the periphery of the loose tube from inside to outside.

2. An optical cable as claimed in claim 1, wherein the fire-blocking layer is one or more layers of mica tape.

3. The fiber optic cable of claim 1, further comprising a filler cord, wherein a number of the filler cords are layered around the periphery of the strength member.

4. A fiber optic cable as claimed in claim 1, wherein a plurality of the loose tubes are spaced apart.

5. An optical cable as recited in claim 1, further comprising a polyester tape layer disposed between said fire-blocking layer and said first jacket.

6. The fiber optic cable of claim 5, further comprising longitudinal aluminum foil tape disposed between the polyester tape layer and the first jacket.

7. The fiber optic cable of claim 1, further comprising an opening cord disposed between the fire-blocking layer and the first jacket.

8. An optical cable as claimed in claim 1, wherein air bubbles are distributed within the first sheath and/or the second sheath.

9. The fiber optic cable of claim 1, wherein the strength member is a FPR non-metallic strength member or a metallic strength member.

10. The optical cable of claim 1, wherein the number of the optical fiber units is 2 to 12.

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