CN209784617U

CN209784617U - Remote optical cable

Info

Publication number: CN209784617U
Application number: CN201920692900.5U
Authority: CN
Inventors: 金永良; 曾辉; 王杰; 陈丽青; 李建宁; 林丽华
Original assignee: Guangdong Hengtong Photoelectric Technology Co Ltd
Current assignee: Guangdong Hengtong Photoelectric Technology Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2019-12-13
Anticipated expiration: 2029-05-15

Abstract

the utility model relates to an optical fiber communication facility technical field discloses an optical cable of zooming out. The remote optical cable comprises an optical fiber, and a central tube, an inner waterproof layer, a reinforcing layer, an outer waterproof layer and a sheath which are sequentially coated on the outer layer of the optical fiber; the reinforcing layer is a grid-shaped structure woven by aramid yarns; the outer waterproof layer is formed by longitudinally wrapping a waterproof tape. This optical cable of zooming out's enhancement layer comprises aramid yarn for the optical cable of zooming out has stronger tensile strength, and weaves into fine and close latticed structure with aramid yarn, can avoid the heat transfer of sheath to give the center tube, causes center tube and interior waterproof layer to take place to glue glutinous. In addition, set up outer waterproof layer between aramid yarn and sheath for aramid yarn and sheath direct contact not prevent that sheath and aramid yarn from gluing too compactly, should pull away the optical cable and easily peel off during the construction, improve the efficiency of construction.

Description

Remote optical cable

Technical Field

The utility model relates to an optical fiber communication facility technical field especially relates to an optical cable zooms out.

Background

Due to the advantages of small outer diameter, light weight and the like, the remote optical cable is widely applied to mobile communication and is generally used in short-distance and indoor coverage scenes.

The existing remote optical cable is generally wrapped with a bundle-shaped aramid yarn, a central tube and a water-blocking tape outside an optical fiber in sequence to form a waterproof layer, the aramid yarn and a sheath. Aramid yarn adjacent to the sheath often adopts and indulges the package, indulges to produce the clearance easily behind the package, in case the clearance appears, the heat of sheath can give the center tube in a large number of transmissions, causes the center tube and blocks water the area and excessively glues glutinous. And indulge aramid yarn and the sheath direct contact of package, the quenching shrink can make the optical cable open and shell the time aramid yarn and sheath glue and glue too compactly, is difficult for peeling off, direct influence efficiency of construction. The assembly of both ends connecting device is carried out at first before using to the optical cable of zooming out, and current sheath is circular structure mostly, and the colour of sheath is black mostly, when being provided with many different optic fibre in the optical cable of zooming out, the optical cable of zooming out's classification is fixed, discernment is distinguished very difficultly when construction and maintenance.

SUMMERY OF THE UTILITY MODEL

based on above, an object of the utility model is to provide an optical cable zooms out, the easy peeling off when construction and maintenance, and easy categorised fixed, improve the efficiency of construction.

In order to achieve the purpose, the utility model adopts the following technical proposal:

A remote optical cable comprising: the optical fiber comprises an optical fiber, and a central tube, an inner waterproof layer, a reinforcing layer, an outer waterproof layer, a tearing layer and a sheath which are sequentially coated on the outer layer of the optical fiber; the reinforcing layer is a grid-shaped structure woven by aramid yarns; the outer waterproof layer is formed by longitudinally wrapping a waterproof tape; the optical fiber is provided with a plurality of optical fibers; the outer surface of the sheath is provided with a bulge.

As a preferred scheme of the remote optical cable, the inner waterproof layer is formed by wrapping the water-blocking tape.

As a preferable scheme of the remote optical cable, the tearing layer comprises two tearing ropes which are oppositely arranged, and the tearing ropes are fixedly arranged between the outer waterproof layer and the sheath.

As a preferable mode of the remote optical cable, a filling layer is disposed between the optical fiber and the central tube.

As a preferable scheme of the remote optical cable, the filling layer is made of the aramid yarn.

As a preferable scheme of the remote optical cable, water-blocking yarns are arranged in the filling layer.

Preferably, each of the optical fibers is a tight-buffered optical fiber.

As a preferable scheme of the remote optical cable, the material coated on the outer layer of the tight-buffered optical fiber is polyvinyl chloride, a low-smoke halogen-free material or polydodecalactam.

As a preferable scheme of the remote optical cable, the sheath is made of low-smoke halogen-free flame-retardant polyolefin.

The utility model has the advantages that:

The utility model provides an optical cable of zooming out, this optical cable of zooming out include optic fibre and cladding in proper order in center tube, interior waterproof layer, enhancement layer, outer waterproof layer, tear layer and the sheath of optic fibre outer layer. The enhancement layer comprises aramid yarn for the optical cable of zooming out has stronger tensile strength, and weaves into fine and close latticed structure with aramid yarn, can avoid the heat transfer of sheath to give the center tube, causes center tube and interior waterproof layer to take place to glue glutinous. Set up outer waterproof layer between aramid yarn and sheath for aramid yarn and sheath direct contact not prevent that sheath and aramid yarn from gluing too compactly, and be provided with the tear layer between outer waterproof layer and the sheath, make this optical cable of zooming easily peel off when using. In addition, the surface of sheath still is provided with the arch, and the categorised of convenient optical cable of zooming out is fixed and discernment is distinguished when construction and maintenance, improves the efficiency of construction.

Drawings

in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a remote optical cable provided by the present invention;

Fig. 2 is a cross-sectional view of a remote fiber optic cable provided by the present invention.

In the figure:

1-optical fiber, 2-filling layer, 3-central tube;

41-inner waterproof layer, 42-outer waterproof layer and 43-water-blocking yarn;

5-reinforcing layer and 6-sheath.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 2, the present embodiment provides a remote optical cable including an optical fiber 1, and a central tube 3, an inner waterproof layer 41, a reinforcing layer 5, an outer waterproof layer 42, and a sheath 6, which are sequentially coated on an outer layer of the optical fiber 1. Wherein, the reinforced layer 5 is a grid structure woven by aramid yarns. The enhancement layer 5 comprises aramid yarn for the optical cable of zooming out has stronger tensile strength, and weaves into fine and close latticed structure with aramid yarn, can avoid 6 heat transfer of sheath to give the center tube 3, causes center tube 3 and interior waterproof layer 41 to take place to glue glutinous. In addition, set up outer waterproof layer 42 between aramid yarn and sheath 6 for aramid yarn and sheath 6 direct contact not prevent that 6 and aramid yarn from gluing too compactly, should pull away the optical cable and easily peel off during the construction, improve the efficiency of construction.

Preferably, in order to further improve the easy-to-peel effect of the remote optical cable, a tearing layer is disposed between the outer waterproof layer 42 and the sheath 6, and specifically, the tearing layer includes two tearing ropes disposed oppositely, and the tearing ropes are fixedly disposed between the outer waterproof layer 42 and the sheath 6. When the site operation, two tear ropes are held respectively to operating personnel's both hands, draw towards two directions that deviate from mutually, can be with the convenient tearing of sheath 6 promptly. The operation is simple, and the tearing efficiency is higher.

Further, the surface of the sheath 6 is provided with a protrusion. In order to distinguish different types of remote optical cables conveniently, bulges in different shapes can be arranged on sheaths 6 of the different types of remote optical cables, so that operators can find the required remote optical cables conveniently and quickly.

Further, the outer waterproof layer 42 is formed by longitudinally wrapping a water-blocking tape, and the inner waterproof layer 41 is formed by wrapping a water-blocking tape. Because the outer surface of the central tube 3 is smooth, the inner waterproof layer 41 adopts a water-blocking tape wrapping structure, a certain friction coefficient between the central tube 3 and the reinforcing layer 5 can be ensured, and the central tube 3 and the reinforcing layer 5 cannot generate obvious displacement under the action of external force. And the inner waterproof layer 41 adopts a water-blocking tape wrapping structure, so that the construction of optical fiber fusion and joint is facilitated. The outer waterproof layer 42 adopts a water-blocking tape longitudinal wrapping structure, so that the adhesion between the sheath 6 and the reinforcing layer 5 can be effectively isolated. Meanwhile, the cable diameter of the water blocking tape wrapping structure is not round, the jacket 6 is adsorbed at the wrapping connector, and the water blocking tape longitudinal wrapping structure is convenient for optical cable stripping and brings convenience for cable stripping in construction.

Further, in the present embodiment, the sheath 6 is made of low smoke, halogen-free and flame retardant polyolefin.

Further, a plurality of optical fibers 1 are arranged in the remote optical cable. Since the remote optical cable has many opportunities to be routed while being used, the remote optical cable needs to have super flexibility. In this embodiment, each optical fiber 1 is a tight-buffered optical fiber. The tight-buffered optical fiber is manufactured by directly covering a primary coated optical fiber of a bare optical fiber with plastic for the second time. The tight buffered optical fiber has good flexibility, excellent mechanical and environmental properties. Preferably, the material of the outer coating of the tight-buffered optical fiber can be polyvinyl chloride, a low smoke zero halogen material or polydodecalactam.

Further, a filling layer 2 is provided between the optical fiber 1 and the central tube 3, and in the present embodiment, the filling layer 2 is made of a bundle-shaped aramid yarn. And the water blocking yarn 43 is arranged in the filling layer 2, so that the water blocking effect is improved, and the service life of the remote optical cable can be prolonged.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A remote fiber optic cable, comprising: the optical fiber comprises an optical fiber (1), and a central tube (3), an inner waterproof layer (41), a reinforcing layer (5), an outer waterproof layer (42), a tearing layer and a sheath (6) which are sequentially coated on the outer layer of the optical fiber (1);

The reinforcing layer (5) is a grid-shaped structure woven by aramid yarns;

The outer waterproof layer (42) is formed by longitudinally wrapping a waterproof belt;

the optical fiber (1) is provided with a plurality of optical fibers, and the outer surface of the sheath (6) is provided with a bulge.

2. a remote optical cable according to claim 1, wherein said inner waterproof layer (41) is formed by wrapping said water-blocking tape.

3. a remote optical cable according to claim 1, wherein the tear layer comprises two tear cords arranged opposite each other, the tear cords being fixedly arranged between the outer waterproof layer (42) and the sheath (6).

4. A remote optical cable according to claim 1, wherein a filler layer (2) is arranged between the optical fibers (1) and the central tube (3).

5. A remote optical cable according to claim 4, wherein the filling layer (2) is constituted by the aramid yarn.

6. A remote optical cable as claimed in claim 4, wherein a water-blocking yarn (43) is provided in the filling layer (2).

7. A remote optical cable according to claim 1, wherein each of the optical fibers (1) is a tight-buffered optical fiber.

8. The remote optical cable according to claim 7, wherein the material coated on the outer layer of the tight-buffered optical fiber is polyvinyl chloride, low smoke zero halogen material or polydodecalactam.

9. A remote optical cable according to claim 1, wherein the sheath (6) is made of a low smoke zero halogen flame retardant polyolefin.