Flexible light optical cable

Abstract

The utility model provides a flexible light-weight optical cable, including Y-shaped support tape, micro beam tube, water-blocking material and outer sheath, the Y-shaped support tape has three branches extending outwards from the center, the micro beam tube arranged side by side with the Y-shaped support tape is arranged among the branches, a plurality of colored optical fibers are wrapped in the micro beam tube, the colored optical fibers are wrapped in the water-blocking material, and the outer sheath is wrapped in the water-blocking material. The water blocking material and the micro beam tubes are arranged in parallel, the water blocking material is arranged on the side portions of the branches, and the outer protection layer wraps the Y-shaped supporting belt, the micro beam tubes and the water blocking material. On the premise of small size and light weight, the flexible light-weight optical cable improves the structural stability, the tensile property, the water resistance, the mechanical property and the service life, and meets the requirements of frequent change and rapid laying of the light-weight optical cable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of optical cable, more accurately relates to a flexible light optical cable. BACKGROUND

[0002] With the continuous development of optical communication technology, the optical communication network is more and more dense, and the optical cable is the basic component of the optical communication network, which is used for transmitting optical signals, and the transmission performance and service life of the optical cable directly affect the overall efficiency and stability of the optical communication network. The optical cable can be divided into layer twisting type and center tube type according to the structure, wherein the center tube type optical cable is wrapped with sleeve, water blocking layer, armor layer and outer protective layer outside the cable core in turn, the sleeve is filled with fiber paste to protect the optical fiber, the water blocking layer is used for waterproofing, and the armor layer is used for pressure resistance and supporting the optical cable. In order to ensure the safety in use, the center tube type optical cable is usually large in size and heavy in weight, which can be effectively applied to outdoor long distance transmission. In the access section of the optical communication network, due to the need to meet the requirements of large number of routes, frequent plugging and rapid erection, optical cables with smaller size and lighter weight are required, so the demand for light optical cables is gradually increasing.

[0003] The traditional light optical cable is mostly of center tube type structure, which is wrapped with composite tape after the cable core, and then the outer protective layer is formed by extruding polyethylene material outside, which can be applied to the situation where the transmission distance is not too far and the safety level requirement is low, and is suitable for overhead, pipeline, channel and building introduction laying modes. The traditional light optical cable has the problems of being easily affected by the environment, weak tensile resistance and easy to be damaged by frequent plugging.

[0004] In summary, the technical field needs a light optical cable that meets the flexibility requirement and has better mechanical properties, improves the tensile resistance, and ensures the stable use of the optical cable in high friction and high pressure use environment. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at providing a flexible light optical cable, taking Y-shaped support belt as the center, cooperating with three-structure micro-beam tube structure, to improve the mechanical properties under the condition of smaller size and weight.

[0006] In order to achieve the above purpose, the utility model provides a flexible light optical cable, which comprises a Y-shaped support belt, a micro-beam tube, a water blocking material and an outer protective layer, the Y-shaped support belt has three branches extending outward from the center, the micro-beam tube is arranged side by side with the Y-shaped support belt between the branches, a plurality of colored optical fibers are wrapped in the micro-beam tube, the water blocking material is arranged side by side with the micro-beam tube, and the water blocking material is arranged on the side of the branch, and the outer protective layer is wrapped outside the Y-shaped support belt, the micro-beam tube and the water blocking material.

[0007] Preferably, the included angle between the branches is 120°, the distance from the end of the branch to the center of the Y-shaped support belt is 1.2-1.5 times the diameter of the micro-beam tube, and the width of the branch is 1 / 3-1 / 2 of the diameter of the micro-beam tube.

[0008] Preferably, the branch is internally nested with a reinforcing member.

[0009] Preferably, the diameter of the reinforcing member is 1 / 2 of the width of the branch, the distance from the reinforcing member to the center of the Y-shaped support belt is 1 / 4-5 / 6 of the length of the branch, the reinforcing member is made of metal or non-metal material, and when the reinforcing member is made of non-metal material, it is applied in the field of power transmission. Preferably, the diameter of the micro-beam tube is 1.0-2.0 mm.

[0010] Preferably, the water-blocking material is a high-expansion water-blocking yarn.

[0011] Preferably, the wall thickness of the outer protective layer is 0.9-1.2 mm.

[0012] Preferably, the micro-beam tube has a micro-beam tube color band different from the color of the micro-beam tube, the micro-beam tube color band is located on the side of the micro-beam tube away from the center of the Y-shaped support belt, and the outer protective layer has three outer protective layer color bands different from the color of the outer protective layer, and the micro-beam tube color band is located on the line connecting the outer protective layer color band and the center of the Y-shaped support belt.

[0013] Preferably, the width of the micro-beam tube color band is 1 / 30-1 / 10 of the circumference of the micro-beam tube, and the width of the outer protective layer color band is 1 / 10-1 / 6 of the circumference of the outer protective layer.

[0014] The utility model also provides a kind of flexible light cable production method, comprising the following steps:

[0015] (A) coloring optical fiber to form colored optical fiber;

[0016] (B) micro-beam tube loose cover, utilize multi-head optical fiber pay-off machine to put multiple colored optical fiber from pay-off disc, and carry out synchronous constant tension control to colored optical fiber by electrical control system;

[0017] (C) extrude high flame-retardant material by main extruder, extrude high flame-retardant color band material by auxiliary extruder, fuse through double-layer co-extrusion machine head diverter and mould, form micro-beam tube with micro-beam tube color band, and colored optical fiber is freely distributed in micro-beam tube;

[0018] (D) extruding Y-shaped support belt and outer sheath, adopting wire rack to lay out reinforcing element and micro-beam tube, adjusting tension of reinforcing element and micro-beam tube through electrical control system; extruding Y-shaped support belt through main extruder, extruding outer sheath through several auxiliary extruders, and extruding outer sheath color belt through several extruders, cooperating with multi-layer co-extrusion head extrusion;

[0019] (E) winding and arranging the cable.

[0020] Compared with the prior art, the flexible light cable has the advantages that under the premise of small volume and light weight, the structural stability, tensile resistance, water resistance, mechanical properties and service life are improved, the frequent changes of the light cable are met, and the rapid laying requirement is met; the outer sheath color belt of the flexible light cable corresponds to the micro-beam tube inside, the position of the micro-beam tube can be quickly confirmed through the outer sheath color belt during use, and the operation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] As Figure 1 shown is a structure schematic view of a flexible light cable. DETAILED DESCRIPTION

[0023] The technical schemes in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0024] As Figure 1 shown, the flexible light cable includes a Y-shaped support belt 1, a micro-beam tube 22, a water-blocking material 3 and an outer sheath 4. The Y-shaped support belt 1 has three branches extending outward from the center. The micro-beam tube 22 is arranged side by side with the Y-shaped support belt 1 between the branches. The colored optical fiber 21 is wrapped in the micro-beam tube 22. The water-blocking material 3 is arranged side by side with the micro-beam tube 22, and the water-blocking material 3 is arranged on the side of the branch. The outer sheath 4 is wrapped outside the Y-shaped support belt 1, the micro-beam tube 22 and the water-blocking material 3. The flexible light cable takes the Y-shaped support belt 1 as the center, and the micro-beam tube 22 is supported by the branches, so that the stability is better, and the structure is more simple and compact.

[0025] The flexible light cable improves the structural stability, tensile resistance, water resistance, mechanical properties and service life under the premise of small volume and light weight, and can meet the requirements of frequent changes and rapid laying of light cables.

[0026] Specifically, the Y-shaped support belt 1 is preferably made of polyester material, and has better overall tensile resistance. The branches of the Y-shaped support belt 1 have an included angle of 120°, and the distance from the end of the branch to the center of the Y-shaped support belt 1 is preferably 1.2-1.5 times the diameter of the micro-beam tube 22, and the width of the branch is preferably 1 / 3-1 / 2 of the diameter of the micro-beam tube 22. The Y-shaped support belt 1 with the preferred size can effectively support, and the overall size and weight are relatively small.

[0027] The branch is preferably nested with a reinforcing member 11 made of metal or non-metal material. The reinforcing member 11 can enhance the overall tensile resistance, and when the reinforcing member 11 is made of non-metal material, it can be applied to the field of power transmission. Further, the diameter of the reinforcing member 11 is 1 / 2 of the width of the branch, and the distance from the center of the Y-shaped support belt 1 to the reinforcing member 11 is 1 / 4-5 / 6 of the length of the branch.

[0028] The colored optical fibers 21 are freely distributed inside the micro-beam tube 22, and the micro-beam tube 22 is made of high flame-retardant material, and the diameter of the micro-beam tube 22 is preferably 1.0-2.0 mm. The micro-beam tube 22 not only can constrain the colored optical fibers 21, but also can play a role in flame retardation and fire prevention.

[0029] The water-blocking material 3 is preferably a high-expansion water-blocking yarn to ensure the water resistance of the flexible light cable.

[0030] The outer protective layer 4 is made of thermoplastic polyurethane elastomer material, and the wall thickness of the outer protective layer 4 is preferably 0.9-1.2 mm. The outer protective layer 4 provides the outermost mechanical protection and corrosion protection.

[0031] The micro-beam tube 22 has a micro-beam tube color band 221 with a color different from that of the micro-beam tube 22, which is located on the side of the micro-beam tube 22 away from the center of the Y-shaped support belt 1, and the outer protective layer 4 has three outer protective layer color bands 41 with colors different from that of the outer protective layer 4, and the micro-beam tube color band 221 is located on the line connecting the outer protective layer color band 41 and the center of the Y-shaped support belt 1, that is, the outer protective layer color band 41 is aligned with the micro-beam tube color band 221. The corresponding outer protective layer color band 41 and the micro-beam tube color band 221 can have the same or different colors, the three outer protective layer color bands 41 can have the same or different colors, and the three micro-beam tube color bands 221 can have the same or different colors. When the flexible light cable is used, the internal micro-beam tube 22 can be quickly confirmed through the outer protective layer color band 41, so that the separation and use are convenient and fast.

[0032] The width of the micro-beam tube color band 221 is preferably 1 / 30-1 / 10 of the circumference of the micro-beam tube 22, and the width of the outer sheath color band 41 is preferably 1 / 10-1 / 6 of the circumference of the outer sheath 4.

[0033] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can 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

1. A flexible, lightweight optical cable, characterized in that, The device includes a Y-shaped support strip, micro-tubes, a water-blocking material, and an outer sheath. The Y-shaped support strip has three branches extending outward from the center. Micro-tubes are arranged parallel to the Y-shaped support strip between the branches. Several colored optical fibers are wrapped in the micro-tubes. The water-blocking material is arranged parallel to the micro-tubes and is disposed on the side of the branches. The outer sheath wraps around the Y-shaped support strip, the micro-tubes, and the water-blocking material.

2. The flexible lightweight optical cable as described in claim 1, characterized in that, The branches are at a 120° angle to each other, the distance from the end of the branch to the center of the Y-shaped support band is 1.2-1.5 times the diameter of the microtube bundle, and the width of the branch is 1 / 3-1 / 2 of the diameter of the microtube bundle.

3. The flexible lightweight optical cable as described in claim 1, characterized in that, The branch contains nested reinforcements.

4. The flexible lightweight optical cable as described in claim 3, characterized in that, The diameter of the reinforcing member is 1 / 2 of the branch width, and the distance between the reinforcing member and the center of the Y-shaped support belt is 1 / 4 to 5 / 6 of the branch length; the reinforcing member is made of metal or non-metal materials; when the reinforcing member is made of non-metal materials, it is used in the field of power transmission.

5. The flexible lightweight optical cable as described in claim 1, characterized in that, The diameter of the microtube is 1.0mm-2.0mm.

6. The flexible lightweight optical cable as described in claim 1, characterized in that, The water-blocking material is a high-expansion water-blocking yarn.

7. The flexible lightweight optical cable as described in claim 1, characterized in that, The outer protective layer has a wall thickness of 0.9mm-1.2mm.

8. The flexible lightweight optical cable as described in claim 1, characterized in that, The microtube has a color band that is different from the color of the microtube. The color band is located on the side of the microtube away from the center of the Y-shaped support band. The outer sheath has three color bands that are different from the color of the outer sheath. The microtube color band is located on the line connecting the outer sheath color band and the center of the Y-shaped support band.

9. The flexible lightweight optical cable as described in claim 8, characterized in that, The width of the microtube ribbon is 1 / 30 to 1 / 10 of the circumference of the microtube, and the width of the outer sheath ribbon is 1 / 10 to 1 / 6 of the circumference of the outer sheath.

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