CN217425767U - Network access optical cable - Google Patents

Abstract

The utility model discloses an optical cable goes into net, be circular shape light unit including the cross-section, still include: the first water-resistant layer is coated on the periphery of the light unit; the first sheath is coated on the periphery of the first waterproof layer; the second water-resistant layer is stranded on the periphery of the first sheath; the second sheath is coated on the periphery of the second waterproof layer; the reinforcing piece is embedded in the second sheath along the length direction of the second sheath; the reinforcing pieces are symmetrically arranged in the second sheath; the first water-resistant layer, the first sheath, the second water-resistant layer and the second sheath are concentric with the light unit. The utility model discloses a full dry-type, all medium, external diameter are little, the quality is light, under the same stretching resistance, its weight is 1/3 of several layers of hank optical cable of concentric core.

Description

Network access optical cable

Technical Field

The utility model relates to an optical cable technical field, concretely relates to optical cable goes into net.

Background

The optical cable is easy to be bitten by rats, and the optical cable is generally protected against rats by changing the structural design of the optical cable in consideration of environmental protection and use scenes.

However, the existing rat-proof optical cable has the defects that compared with the common optical cable, the optical cable has no weight advantage under the same tensile resistance, and meanwhile, the outer diameter of the optical cable is increased, so that the optical cable is not beneficial to overhead and pipeline laying, and cannot be used as an MPO optical fiber jumper wire to be applied to a data center.

Therefore, an optical cable with light weight and small outer diameter and a rat-proof function is needed.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects in the prior art.

In order to solve the technical problem, the utility model provides an optical cable goes into net, be circular shape light unit including the cross-section, still include:

the first water-resistant layer is coated on the periphery of the light unit;

the first sheath is coated on the periphery of the first waterproof layer;

the second water-resistant layer is stranded on the periphery of the first sheath;

the second sheath is coated on the periphery of the second waterproof layer;

the reinforcing piece is embedded in the second sheath along the length direction of the second sheath; the reinforcing pieces are symmetrically arranged in the second sheath;

the first water-resistant layer, the first sheath, the second water-resistant layer and the second sheath are concentric with the light unit.

As a preferred mode of the present invention, the light unit includes a plurality of optical fibers, which are regularly distributed and integrated, and a curing layer coated on and cured on the periphery of the optical fiber bundle.

As a preferable mode of the present invention, the cured layer is acrylic resin.

As an optimal mode of the present invention, adjacent two pairs of the optical fibers are tangent.

As an optimized mode of the utility model, the first water-blocking layer is the yarn that blocks water.

As an optimal mode of the utility model, the second water-blocking layer is made of water-blocking glass yarn and aramid fiber.

As a preferable mode of the present invention, the reinforcement is made of a fiber-reinforced composite material.

As an optimized mode of the present invention, the surface of the reinforcing member is provided with a glue coating layer.

As a preferable mode of the present invention, the first sheath is made of a polycarbonate material.

As a preferable mode of the present invention, the second sheath is made of a polyethylene material or an LSZH low smoke zero halogen material.

Compared with the prior art, the technical scheme of the utility model have following advantage:

1. the full-dry type structure is adopted, the longitudinal water-blocking capacity is strong, the use of ointment is omitted, the weight of the optical cable is favorably reduced, and the overhead and pipeline laying is facilitated.

2. The optical cable has compact structure and small outer diameter, and can be used as an MPO optical cable for a data center.

3. The rat-proof design is adopted while the weight is reduced, so that the rat-proof and rat-proof cage is favorable for laying in rampant regions of rats and birds.

Drawings

In order to make the content of the present invention more clearly understood, the present invention will be described in further detail with reference to the following embodiments of the present invention, in conjunction with the accompanying drawings.

Fig. 1 is a schematic cross-sectional view of an optical fiber cable for network access.

The specification reference numbers indicate: 1. the optical fiber comprises a light unit, 11 optical fibers, 12 cured layers, 2 first water-resistant layers, 3 first sheaths, 4 second water-resistant layers, 5 second sheaths, 6 reinforcing members and 7 tearing ropes.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not limited to the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. 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 "second" or "first" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features, or indirectly contacting the first and second features through intervening media. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements does not include a limitation to the listed steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1, the utility model provides an embodiment of optical cable goes into net, including the cross-section for circular shape light unit, still include:

and a first water blocking layer 2 covering the periphery of the light unit 1. The first water-resistant layer 2 is used for longitudinally resisting water, and the first water-resistant layer 2 is tightly coated with the light unit 1.

And the first sheath 3 is coated on the periphery of the first waterproof layer 2. The first sheath 3 is used for improving the lateral pressure resistance, and the first waterproof layer 2 is positioned between the optical unit 1 and the first sheath 3.

And the second waterproof layer 4 is twisted on the periphery of the first sheath 3. The second waterproof layer 4 is used for improving the tensile property and the waterproof property of the optical cable and preventing the gnawing of rats and birds. The second water-resistant layer 4 is tightly twisted on the outer layer of the first sheath 3.

And a second sheath 5 covering the outer periphery of the second waterproof layer 4. The second sheath 5 is used for realizing good environmental performance of the optical cable, so that the optical cable can adapt to most environments, and the applicability is improved.

And a reinforcing member 6 embedded in the second sheath 5 along the longitudinal direction of the second sheath 5. The stiffeners 6 are symmetrically arranged within the second sheath 5. The reinforcing member 6 is embedded in the second sheath 5 during the processing of the optical cable, and the reinforcing member 6 is used for enhancing the tensile resistance of the optical cable, so that the optical cable has excellent environmental performance. At least two reinforcing members 6 are symmetrically distributed in the second sheath 5, specifically, the reinforcing members 6 are distributed on two sides of the light unit 1, and the reinforcing members 6 and the light unit 1 are located on the same plane.

The first water-resistant layer 2, the first sheath 3, the second water-resistant layer 4 and the second sheath 5 are concentric with the optical unit 1, all layers are tightly coated, and the cross section of the optical cable is circular.

Preferably, the thicknesses of the first water-resistant layer 2, the first sheath 3, the second water-resistant layer 4 and the second sheath 5 are gradually increased.

The light unit 1 includes a bundle of optical fibers 11 integrated in a regular distribution, and a cured layer 12 coated and cured on the outer circumference of the bundle of optical fibers. The cured layer 12 is an acrylic resin.

Twelve optical fibers 11 are preferably adopted, every two adjacent optical fibers 11 are tangent, and the optical fibers are specifically distributed in four layers, namely a first layer with two optical fibers, a second layer with three optical fibers, a third layer with four optical fibers and a fourth layer with three optical fibers. The optical fibers 11 are closely arranged in a bundle, and the outer layer of the bundle is coated with acrylic resin and cured to form a cured layer 12. The closely arranged optical fibers 11 facilitate longitudinal water blocking in an grease-free state, and facilitate reduction in the weight of the optical cable.

The first water-blocking layer 2 is water-blocking yarn, and the water-blocking yarn is placed in the first sheath 3 and used for longitudinally blocking water.

The second water-blocking layer 4 is made of water-blocking glass yarns and aramid fibers, the water-blocking glass yarns are used for preventing the rat and bird bite, and the aramid fibers are used for achieving tensile strength. And the water-resistant glass yarn is mixed with the aramid fiber and twisted into a second water-resistant layer 4.

The reinforcement 6 is made of a fibre-reinforced composite material. Specifically, the reinforcing member 6 is an FRP rod, and the FRP rod is used for improving tensile resistance, so that the optical cable has excellent environmental performance. The surface of the reinforcing part 6 is provided with a glue coating, and glue is used for combining the reinforcing part 6 and the second sheath 5.

The first sheath 3 is made of polycarbonate material. Polycarbonate, also known as PC plastic, is more resistant to lateral pressure than PBT plastic.

The second sheath 5 is made of polyethylene material or LSZH low smoke zero halogen material. The second sheath 5 is made of low-shrinkage UV-resistant polyethylene material, so that the environmental adaptability can be improved. If the flame-retardant material is used indoors, an LSZH low-smoke halogen-free material can be adopted, so that the flame-retardant property is improved.

Preferably, the optical cable is provided with a tearing rope 7 along the length direction, so that the optical cable is convenient to strip and the splicing maintenance is convenient. The tearing rope 7 is preferably arranged between the second water-resistant layer 4 and the second sheath 5, so that the second sheath 5 can be torn by applying force.

Compared with the prior art, the technical scheme of the utility model have following advantage:

an optical cable goes into net, adopt full dry-type structure, full medium, the structure is inseparable, the external diameter is little, the quality is light, under the same stretching resistance, its weight is 1/3 of several layers of hank optical cables of same core, can be used to make somebody a mere figurehead and pipeline laying to and lay in thunder and lightning, the rampant region of mouse and bird. Because of its small external diameter, can regard MPO optical cable to be used for data center.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (9)

1. An optical fiber cable for network entry, comprising an optical unit having a circular cross-section, further comprising:

the first water-resistant layer is coated on the periphery of the light unit;

the first sheath is coated on the periphery of the first waterproof layer;

the second water-resistant layer is stranded on the periphery of the first sheath;

the second sheath is coated on the periphery of the second waterproof layer;

the reinforcing piece is embedded in the second sheath along the length direction of the second sheath; the reinforcing pieces are symmetrically arranged in the second sheath;

the first water-resistant layer, the first sheath, the second water-resistant layer and the second sheath are concentric with the light unit.

2. A network-entering optical cable according to claim 1, wherein the optical unit comprises an optical fiber bundle integrated by a plurality of optical fibers in a regular distribution, and a cured layer coated and cured on the outer circumference of the optical fiber bundle.

3. A cable as claimed in claim 2, wherein the cured layer is an acrylic resin.

4. A cable as claimed in claim 2, wherein adjacent fibres are tangent two by two.

5. A cable as claimed in claim 1, wherein the first water-blocking layer is a water-blocking yarn.

6. A cable as claimed in claim 1, wherein the strength member is made of a fibre-reinforced composite material.

7. A network-entry optical cable as claimed in claim 6, wherein the surface of the strength member is provided with a rubber coating.

8. A cable as claimed in claim 1, wherein the first sheath is made of polycarbonate material.

9. A cable as claimed in claim 1, wherein the second sheath is made of polyethylene or LSZH low smoke zero halogen material.

Images