CN211236377U

CN211236377U - Dry-type easily-stripped nonmetal optical cable for indoor and outdoor access with high flame retardance

Info

Publication number: CN211236377U
Application number: CN202020002285.3U
Authority: CN
Inventors: 张根浩
Original assignee: TWENTSCHE (NANJING) FIBRE OPTICS Ltd
Current assignee: TWENTSCHE (NANJING) FIBRE OPTICS Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-08-11
Anticipated expiration: 2030-01-02

Abstract

The utility model belongs to the technical field of the communication optical cable, concretely relates to high fire-retardant indoor outer access is with dry-type nonmetal optical cable of easily peeling off. It includes the light unit that easily peels off of a plurality of, the light unit that easily peels off comprises inner sheath and one or many colored optic fibre, and the colored optic fibre is being shielded to the inner sheath cladding, the compound mica tape of outside cladding of light unit is easily peeled off, the outside cladding glass yarn that blocks water of compound mica tape, the outside cladding oversheath that blocks water the glass yarn the utility model discloses optic fibre and sheath are easily separated, have increased the convenience of construction, do benefit to and have improved the efficiency of construction, have advantages such as tensile strength is strong, the water blocking performance is good, can satisfy indoor outdoor optical cable demand simultaneously.

Description

Dry-type easily-stripped nonmetal optical cable for indoor and outdoor access with high flame retardance

Technical Field

The utility model belongs to the technical field of the communication optical cable, concretely relates to high fire-retardant indoor outer access is with dry-type nonmetal optical cable of easily peeling off.

Background

Different use environments and laying conditions impose different requirements on the performance of the optical cable: the indoor optical cable is required to have good flame retardant property, and the outdoor optical cable sheath has excellent ultraviolet resistance.

At present, with the development of fiber-to-the-home network construction, more and more users access to optical fibers. When various wiring environment requirements exist at the same time, the optical cable is often replaced, because in the prior art, the indoor optical cable and the outdoor optical cable are used in a segmented mode and connected by the joint, the reliability of a communication system is reduced due to excessive joint and connection stress, and the later maintenance cost is increased; meanwhile, the construction efficiency is greatly reduced by manual stripping, and the construction cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide an optic fibre easily separates with the sheath, can satisfy indoor outdoor optical cable demand, do benefit to the high fire-retardant indoor outer dry-type easy-to-strip nonmetal optical cable of inserting of improvement efficiency of construction simultaneously.

In order to achieve the technical purpose, the utility model adopts the following technical scheme: high fire-retardant indoor outer access of access is with dry-type easy-to-strip non-metallic optical cable, including a plurality of easy-to-strip optical unit, easy-to-strip optical unit comprises inner sheath and one or many colored optic fibre, and colored optic fibre is being wrapped to the inner sheath cladding, the compound mica tape of outside cladding of easy-to-strip optical unit, the glass yarn that blocks water is wrapped to the outside cladding of compound mica tape, the outside cladding oversheath of the glass yarn that blocks water.

Or the following technical scheme is adopted: the dry-type easily-stripped non-metallic optical cable comprises a plurality of easily-stripped optical units, wherein each easily-stripped optical unit consists of an inner sheath and one or more colored optical fibers, the colored optical fibers are coated on the inner sheath, a composite mica tape is coated on the outer side of each easily-stripped optical unit, a non-metallic reinforcing layer is coated on the outer side of the composite mica tape, and an outer sheath is coated on the outer side of the non-metallic reinforcing layer.

Preferably, the easily peelable optical unit is a fully dry optical unit.

As the preferred technical scheme, two nonmetal reinforcing pieces which are arranged in parallel are embedded in the outer sheath.

As a preferred technical scheme, the two nonmetal reinforcing pieces are symmetrically arranged.

As a preferred technical scheme, the inner sheath and the outer sheath are both made of low-smoke halogen-free materials.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has at least:

(1) the optical fiber subunit is easy to peel, the optical fiber and the sheath are easy to separate, the convenience of construction is improved, the construction efficiency is improved, and the construction cost is saved.

(2) The non-metal reinforced layer is adopted, so that the tensile strength is strong, and the water resistance is good; the outer sheath embedded with the parallel non-metal reinforcing parts enables the optical cable to have excellent pressure resistance.

(3) The composite mica tape and the water-blocking glass yarn form a water-blocking fire-insulating layer, the water-blocking glass yarn is not easy to transversely break, the water-blocking glass yarn has excellent hydrophilic expansion performance, the tensile strength of the optical cable can be enhanced, certain lateral pressure resistance is provided, and the mica tape has excellent functions of flame resistance and the like, so that the flame-retardant fire-insulating layer formed by combining the mica tape and the water-blocking glass yarn improves the flame-retardant fire-resistant characteristic of the optical cable.

(4) The inner sheath and the outer sheath are made of low-smoke halogen-free materials, and the optical cable has excellent flame retardance.

(5) And a full-dry structure is adopted, no factice is generated in construction, cleanness and sanitation are realized, and the requirements of indoor and outdoor optical cables are met.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

Example one

As shown in fig. 1, the dry-type easily-stripped nonmetal optical cable for access inside and outside the high flame retardant chamber comprises a plurality of easily-stripped optical units, wherein the optical units are all dry-type, 4 optical units are taken as an example in the embodiment, and other numbers of the optical units can be adopted; the optical unit is easy to strip, the optical fiber and the sheath are easy to separate, convenience in construction is improved, construction efficiency is improved, and construction cost is saved. And the dry structure is adopted, no factice is generated in the construction, the optical cable is clean and sanitary, and the requirements of indoor and outdoor optical cables are met

The light unit of easily peeling off comprises colored optic fibre 6 of inner sheath 4 and 9, and colored optic fibre 6 is being wrapped to inner sheath 4, the compound mica tape 3 of outside cladding of light unit is easily peeled off, the outside cladding of compound mica tape 3 blocks water glass yarn 2, the outside cladding oversheath 1 of glass yarn 2 blocks water, the embedded nonmetal reinforcement 5 that is equipped with two parallel arrangement of oversheath, two nonmetal reinforcement 5 is the symmetry setting, and the oversheath that contains parallel nonmetal reinforcement like this makes the optical cable have excellent compressive property, and nonmetal reinforcement 5 can adopt nylon stick etc..

The outer sheath 1 is made of a high-flame-retardant low-smoke halogen-free material with good post-shrinkage, the inner sheath 4 is made of a low-smoke halogen-free material with good post-shrinkage, and the high-flame-retardant low-smoke halogen-free material has the advantages of being small in post-shrinkage, not prone to increase optical fiber loss of cabling at a low temperature, and capable of separating the colored optical fiber 6 from the inner sheath 4. The outer sheath 1 is provided with a water-blocking and fire-insulating layer, so that the optical cable is higher in flame retardant capability.

The water-blocking glass yarn 2 is not easy to transversely break, has excellent hydrophilic expansion performance, can enhance the tensile resistance of the optical cable and provide certain lateral pressure resistance, and the mica tape has excellent flame-resistant and other functions, so that the flame-resistant and fireproof properties of the optical cable are greatly improved by the water-blocking and fire-insulating layer formed by combining the water-blocking glass yarn 2 and the mica tape.

Example two

As shown in fig. 2, the structure of this embodiment is substantially the same as that of the first embodiment, and the description of the same parts is omitted, and the only difference is that: in the embodiment, the non-metal reinforcing layer 7 is adopted to replace water-blocking glass yarns, and the non-metal reinforcing layer 7 can be made of nylon, so that the waterproof glass fiber reinforced plastic has the advantages of strong tensile strength and good water-blocking performance.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims

1. High fire-retardant indoor outer access of access is with dry-type easy peel off nonmetal optical cable, its characterized in that: including the light unit of easily peeling off of a plurality of, easily peel off the light unit and constitute by inner sheath and one or many colored optic fibre, the colored optic fibre is being wrapped to the inner sheath, the compound mica tape of outside cladding of light unit easily peels off, the glass yarn that blocks water is wrapped to the outside cladding of compound mica tape, the outside cladding oversheath of the glass yarn that blocks water.

2. High fire-retardant indoor outer access of access is with dry-type easy peel off nonmetal optical cable, its characterized in that: the optical unit comprises a plurality of easily-stripped optical units, each easily-stripped optical unit comprises an inner sheath and one or more colored optical fibers, the colored optical fibers are coated on the inner sheath, the composite mica tape is coated on the outer side of each easily-stripped optical unit, the non-metal reinforcing layer is coated on the outer side of the composite mica tape, and the outer sheath is coated on the outer side of the non-metal reinforcing layer.

3. The dry type easily stripped nonmetal optical cable for indoor and outdoor access with high flame retardance according to claim 1 or 2, characterized in that: the easily stripped optical unit is a full-dry optical unit.

4. The dry type easily stripped nonmetal optical cable for indoor and outdoor access with high flame retardance of claim 1, wherein: two nonmetal reinforcements arranged in parallel are embedded in the outer sheath.

5. The dry type easily stripped nonmetal optical cable for indoor and outdoor access with high flame retardance of claim 4, wherein: two nonmetal stiffeners are symmetrically arranged.

6. The dry type easily stripped nonmetal optical cable for indoor and outdoor access with high flame retardance according to claim 1 or 2, characterized in that: the inner sheath and the outer sheath are both made of low-smoke halogen-free materials.