CN213302617U

CN213302617U - Low-time-delay high-linear-density optical cable

Info

Publication number: CN213302617U
Application number: CN202022157828.1U
Authority: CN
Inventors: 周翌东; 邱伟丰; 周吉祥
Original assignee: Shanghai Yurong Optical Technology Co ltd
Current assignee: Shanghai Yurong Optical Technology Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-05-28
Anticipated expiration: 2030-09-27

Abstract

The utility model discloses a low time delay high linear density optical cable, including outer protective sheath, the inboard embedding of outer protective sheath is provided with the aramid fiber, it tears the rope to imbed jointly between aramid fiber and the outer protective sheath, the inboard even embedding of aramid fiber is provided with a plurality of optical fiber unit. The utility model discloses in, the size control of optic fibre unit, this product require the size less relatively, and the quantity that final design is the optic fibre core body in every optic fibre protective sheath is 24, produces finished product 288 cores like this and only needs 12 optic fibre units, and optic fibre unit is less, and relative optic fibre length uniformity is controlled more easily.

Description

Low-time-delay high-linear-density optical cable

Technical Field

The utility model relates to an optical cable technical field especially relates to a low time delay high linear density optical cable.

Background

The optical cable is manufactured for meeting the performance specification of optics, machinery or environment, and is a communication cable component which uses one or more optical fibers arranged in a coating sheath as transmission media and can be used independently or in groups, the optical cable mainly comprises optical fibers, a plastic protective sleeve and a plastic outer sheath, metals such as gold, silver, copper and aluminum and the like are not contained in the optical cable, the optical cable generally has no recycling value, the optical cable is a communication line which is used for realizing optical signal transmission and is formed by a certain number of optical fibers forming a cable core according to a certain mode, and the optical cable is coated with the sheath, and some optical cables are also coated with an outer protective layer;

when the actual length of each optical fiber in the same optical cable is tested by using the OTDR, the length difference of the optical fibers is within 3 meters, which is caused by the twisting difference of optical fiber twisting and cabling twisting, so that the consistency of the optical fiber length is difficult to control, and the time delay of the optical cable is further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a low-time-delay high-linear-density optical cable.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a low time delay high linear density optical cable, includes outer protective sheath, the inboard embedding of outer protective sheath is provided with aramid fiber, it tears the rope to imbed jointly between aramid fiber and the outer protective sheath, the inboard even embedding of aramid fiber is provided with a plurality of optical fiber unit.

As a further description of the above technical solution:

the number of the optical fiber units on the inner side of each aramid fiber is twelve.

As a further description of the above technical solution:

the optical fiber unit comprises an optical fiber protective sleeve, the optical fiber protective sleeve is embedded into the inner side of the aramid fiber, aramid fiber yarns are embedded into the inner side of the optical fiber protective sleeve, a plurality of optical fiber core bodies are arranged in the inner side of each aramid fiber yarn in an embedded mode, and the number of the optical fiber core bodies on the inner side of the optical fiber unit is twenty-four.

As a further description of the above technical solution:

the outer surface of the outer protective sleeve is provided with anti-skid lines.

As a further description of the above technical solution:

the diameter and the wall thickness of each optical fiber protective sleeve are respectively 1.4mm and 0.1 mm.

As a further description of the above technical solution:

the outer protective sleeve is made of high-hardness LSZH.

The utility model discloses following beneficial effect has:

according to the low-delay high-linear-density optical cable, the size of the optical fiber units is controlled, the required size of the optical fiber units is relatively small, and the number of the optical fiber core bodies in each optical fiber protective sleeve is finally designed to be 24, so that only 12 optical fiber units are needed for producing a finished 288 core, the number of the optical fiber units is less, and the consistency of the relative optical fiber lengths is easier to control.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of an optical fiber unit according to the present invention;

fig. 3 is a schematic top view of the present invention.

Illustration of the drawings: 1. an outer protective sheath; 2. aramid fiber; 3. tearing the rope; 4. an optical fiber unit; 401. an optical fiber protective sheath; 402. aramid yarn; 403. an optical fiber core body; 5. and (4) anti-skid lines.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a low time delay high linear density optical cable, includes outer protective sheath 1, and the inboard embedding of outer protective sheath 1 is provided with aramid fiber 2, and the common embedding is provided with between aramid fiber 2 and the outer protective sheath 1 and tears rope 3, and aramid fiber 2's inboard even embedding is provided with a plurality of optical fiber unit 4.

The number of the optical fiber units 4 inside each aramid fiber 2 is twelve, and the fewer the optical fiber units 4 are, the easier the control of the relative optical fiber length consistency is.

The optical fiber unit 4 includes optical fiber protective sheath 401, optical fiber protective sheath 401 imbeds aramid fiber 2's inboard, optical fiber protective sheath 401's inboard embedding is provided with aramid fiber yarn 402, aramid fiber yarn 402's inboard embedding is provided with a plurality of optical fiber core bodies 403, the quantity of the optical fiber core body 403 of 4 inboard of every optical fiber unit is twenty-four, the core number of designing for every optical fiber unit 4 is 24 cores, it only needs 12 optical fiber unit 4 to produce finished product 288 cores like this, optical fiber unit 4 is less, relative optical fiber length uniformity is controlled more easily.

The outer surface of the outer protective sleeve 1 is provided with anti-slip lines 5, so that the optical cable is prevented from easily slipping when being integrally laid.

The diameter and the wall thickness of each optical fiber protective sleeve 401 are respectively 1.4mm and 0.1mm, and the design can be convenient for controlling the paying-off tension of the optical fiber to be about 50 g.

The material of outer protective sheath 1 is high rigidity LSZH, and LSZH does not release halogenous gas under the circumstances of burning, and smog concentration is low, can avoid and reduce the secondary damage that conflagration and conflagration caused.

The working principle is as follows: when a low-delay high-linear-density optical cable is used, the required size of the optical fiber unit 4 is relatively small, the number of the optical fiber core bodies 403 in each optical fiber protective sleeve 401 is 24, only 12 optical fiber units 4 are needed for producing a finished 288 core, the number of the optical fiber units 4 is less, the consistency of the length of the optical fiber is easier to control, the size of the 24-core optical fiber unit 4 is 1.4mm, the wall thickness is 0.1mm, the optical fiber paying-off tension is 50g, the pitch is 1000mm, a 50d aramid yarn 402 is placed in the middle in the production process of the optical fiber unit 4 as a reinforcing material, the optical fiber units 4 are arranged in the outer protective sleeve 1 according to a theoretical arrangement sequence, the adopted method is similar to the combination method of the optical fiber units 4, the aramid yarn 2 is also used as the reinforcing material, the tension control is key, the paying-off tension reaches 120g, the optical fiber is helically stranded, high rigidity LSZH is as outer protective sheath 1, final test, and per kilometer optic fibre length error is not more than 1m, according to about jumper wire length 30m, this error is acceptable, and finished product size, conventional similar optical cable all need have a center to strengthen the core, and this product does not contain this component for finished product size will be little 20%, has certain help (weight reduces, size reduces) to the production of follow-up armour cable, has certain practicality.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. A low-latency high-linear-density optical cable comprising an outer protective sheath (1), characterized in that: the inner side of the outer protective sleeve (1) is embedded with aramid fibers (2), a tearing rope (3) is embedded between the aramid fibers (2) and the outer protective sleeve (1) together, and a plurality of optical fiber units (4) are uniformly embedded in the inner side of the aramid fibers (2).

2. A low-latency high linear density optical cable according to claim 1, wherein: the number of the optical fiber units (4) on the inner side of each aramid fiber (2) is twelve.

3. A low-latency high linear density optical cable according to claim 1, wherein: optical fiber unit (4) are including optic fibre protective sheath (401), the inboard of optic fibre protective sheath (401) embedding aramid fiber (2), the inboard embedding of optic fibre protective sheath (401) is provided with aramid yarn (402), the inboard embedding of aramid yarn (402) is provided with a plurality of optical fiber core bodies (403), every the quantity of the inboard optical fiber core body (403) of optic fibre unit (4) is twenty four.

4. A low-latency high linear density optical cable according to claim 1, wherein: the outer surface of the outer protective sleeve (1) is provided with anti-skid lines (5).

5. A low-latency high linear density optical cable according to claim 3, wherein: the diameter and the wall thickness of each optical fiber protective sleeve (401) are respectively 1.4mm and 0.1 mm.

6. A low-latency high linear density optical cable according to claim 1, wherein: the outer protective sleeve (1) is made of LSZH.