CN217386754U

CN217386754U - Flame-retardant photoelectric composite cable capable of being repeatedly retracted and released

Info

Publication number: CN217386754U
Application number: CN202220412318.0U
Authority: CN
Inventors: 商宇; 高帅; 王焱; 潘磊
Original assignee: Hunan Valin Wire and Cable Co Ltd
Current assignee: Hunan Valin Wire and Cable Co Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-09-06
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a flame-retardant photoelectric composite cable capable of being repeatedly wound and unwound, which comprises a cable core cabling unit and an outer sheath unit, wherein the outer sheath unit is wrapped outside the cable core cabling unit, the cable core cabling unit comprises an insulating cable core and an optical fiber cable core which are mutually twisted, and the insulating cable core comprises a conductor and an insulating layer arranged outside the conductor; the optical fiber cable core sequentially comprises a G652 single-mode optical fiber, an optical fiber reinforcing layer and an optical fiber outer protective layer from inside to outside, and the outer sheath unit sequentially comprises a flame-retardant wrapping tape layer, a braiding layer and a sheath layer from inside to outside. Collect optic fibre, transmission of electricity copper line in an organic whole, not only can solve the problem of broadband access, equipment power consumption, signal transmission, can also be used for the transport and the distribution of electric energy, can effectually solve the problem of equipment power consumption in the network construction, avoids repeatedly laying the power supply line and causes the safety problem.

Description

Flame-retardant photoelectric composite cable capable of being repeatedly retracted and released

Technical Field

The utility model relates to a novel cable field especially relates to a can receive and release fire-retardant photoelectric cables repeatedly.

Background

With the vigorous development of the power construction industry, the photoelectric composite cable is widely applied to large-scale venues, mines, subways and other places. The photoelectric composite cable can be laid in a vertical installation mode, a wall laying mode and the like, the traditional cable and the optical fiber are separated in the laying process and easily cause mechanical damage, and the photoelectric composite cable has the problems of short service life, no tensile strength, no pressure resistance and the like, is easily and thoroughly punctured after long-time operation or damp, and can possibly cause short-circuit faults or fire accidents in serious cases.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can receive and release fire-retardant photoelectricity composite cable repeatedly to solve above related problem.

In order to achieve the above object, the utility model provides a following technical scheme: the photoelectric composite cable capable of being repeatedly wound and unwound comprises a wire core cabling unit and an outer sheath unit, wherein the outer sheath unit wraps the outer side of the wire core cabling unit, the wire core cabling unit comprises two insulated wire cores and an optical fiber wire core which are mutually twisted, and each insulated wire core comprises a conductor and an insulating layer arranged on the outer side of the conductor; the optical fiber cable core sequentially comprises a G652 single-mode optical fiber, an optical fiber reinforcing layer and an optical fiber outer protective layer from inside to outside, and the outer sheath unit sequentially comprises a flame-retardant wrapping tape layer, a braiding layer and a sheath layer from inside to outside.

As a further improvement of the above technical solution:

the conductor is formed by twisting soft round copper wires, and the conductor is twisted by a small pitch-diameter ratio.

The insulating layer is formed by extruding and wrapping a cross-linked polyolefin material.

The cable core cabling unit further comprises a filling rope, and the filling rope is stranded with the insulating cable core and the optical fiber cable core together. The filling rope is made of aramid fiber rope with strong tensile strength.

The flame-retardant wrapping tape layer is formed by wrapping a glass fiber tape material.

The braided layer is formed by braiding tinned copper wires.

The sheath layer is formed by extruding halogen-free low-smoke high-flame-retardant polyolefin.

The optical fiber reinforcing layer comprises a silica gel cladding and a nylon tight cladding which are sequentially coated outside the G652 single-mode optical fiber.

The optical fiber outer protection layer comprises an aramid fiber woven layer woven outside the nylon tight-wrapping layer and a fluoroplastic sheath extruded outside the aramid fiber woven layer.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a can receive and release fire-retardant photoelectricity composite cable repeatedly, optical fiber, transmission of electricity copper line in an organic whole, not only can solve broadband access, equipment power consumption, signal transmission's problem, can also be used to the transport and the distribution of electric energy, can effectually solve the problem of equipment power consumption in the network construction, avoid repeated laying power supply line to cause the problem. The composite cable has the advantages of small outer diameter, light weight, small occupied space, low purchasing construction and network construction cost, convenient construction and the like. The cross-linked polyolefin insulation is adopted, so that the cable is ensured to have excellent electrical property, mechanical property and environmental protection, the breakdown strength of the cable is improved, the corona resistance is good, the dielectric loss is small, and the tensile strength is high. The outer sheath has the environmental protection characteristics of no halogen, low smoke, high flame retardance, no fluorine, no asbestos and no alkali, and meets the requirements of power system transmission and optical fiber signal receiving transmission and monitoring in places such as military areas, signal moving buildings, markets, hospitals and building districts. The fire-retardant difficult breakdown of cable can be made on the one hand around the band layer, and on the other hand makes the cable nonflammable to can avoid short circuit fault or fire accident's emergence, improve the durability and the suitability of cable, and overall structure scientific and reasonable, the simple installation. The optical fiber element adopts G652 single-mode optical fiber, so that the attenuation is small, and the distortion of the signal transmission effect is small. The optical fiber adopts a mode of reinforcing the optical fiber and protecting the optical fiber outside, so that the optical fiber unit can have higher mechanical strength, and the increase of the optical fiber microbending loss under the stress condition can be prevented. The cable can bear very large tension in the use environment and can bear larger one-way lateral pressure.

Drawings

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

fig. 2 is an enlarged schematic structural diagram of a point a in fig. 1 according to the present invention.

Reference numerals: 21. a conductor; 22. an insulating layer; 10. a G652 single mode fiber; 11. an optical fiber reinforcement layer; 12. an optical fiber outer protective layer; 4. a flame retardant wrap tape layer; 5. weaving layer; 6. a sheath layer; 7. filling a rope; 111. silica gel cladding; 112. a nylon tight-wrapping layer; 121. an aramid fiber woven layer; 122. a fluoroplastic sheath.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" 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 to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or 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.

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.

As shown in fig. 1 and fig. 2, the flame-retardant photoelectric composite cable capable of being repeatedly retracted and extended in this embodiment includes a core cabling unit and an outer sheath unit, the outer sheath unit is wrapped outside the core cabling unit, the core cabling unit includes an insulated core and an optical fiber core twisted with each other, and the insulated core includes a conductor 21 and an insulating layer 22 disposed outside the conductor 21; the optical fiber core sequentially comprises a G652 single-mode optical fiber 10, an optical fiber reinforcing layer 11 and an optical fiber outer protective layer 12 from inside to outside, and the outer sheath unit sequentially comprises a flame-retardant wrapping tape layer 4, a braiding layer 5 and a sheath layer 6 from inside to outside.

The conductor 21 is formed by twisting soft round copper wires, and the conductor 21 is twisted by a small pitch-diameter ratio.

The insulating layer 22 is extruded from a cross-linked polyethylene material. The cable has excellent electrical performance, mechanical performance and environmental protection, and has the advantages of improved breakdown strength, good corona resistance, low dielectric loss and high tensile strength.

The cable core cabling unit further comprises a filling rope 7, and the filling rope 7 is stranded with the insulation cable core and the optical fiber cable core together. In order to ensure the roundness, a filling rope 7 is additionally arranged, so that the twisted roundness is convenient to improve.

The flame-retardant wrapping band layer 4 is formed by wrapping glass fiber band materials. On one hand, the cable is not easy to puncture, on the other hand, the cable is not easy to burn, so that short-circuit faults or fire accidents can be avoided, the durability and the applicability of the cable are improved, the overall structure is scientific and reasonable, and the installation is simple and convenient.

The braided layer 5 is formed by braiding tinned copper wires.

The sheath layer 6 is formed by extruding halogen-free low-smoke high-flame-retardant polyolefin. The optical fiber cable has the environmental protection characteristics of no halogen, low smoke, high flame retardance, no fluorine, no asbestos and no alkali, and meets the transmission and monitoring of power system transmission and optical fiber signal receiving in places such as military areas, signal mobile buildings, markets, hospitals and building districts.

The optical fiber reinforcing layer 11 comprises a silica gel cladding layer 111 and a nylon tight cladding layer 112 which are sequentially coated outside the G652 single-mode optical fiber 10.

The optical fiber outer protective layer 12 includes an aramid fiber braid 121 woven outside the nylon tight-buffered layer 112 and a fluoroplastic sheath 122 extruded outside the aramid fiber braid 121.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a can receive and release fire-retardant photoelectricity composite cable repeatedly, includes sinle silk stranding unit and oversheath unit, its characterized in that: the outer sheath unit wraps the outer side of the wire core cabling unit, the wire core cabling unit comprises an insulated wire core and an optical fiber wire core which are mutually twisted, and the insulated wire core comprises a conductor (21) and an insulating layer (22) arranged on the outer side of the conductor (21); the optical fiber cable core sequentially comprises a G652 single-mode optical fiber (10), an optical fiber reinforcing layer (11) and an optical fiber outer protective layer (12) from inside to outside, and the outer sheath unit sequentially comprises a flame-retardant winding tape layer (4), a weaving layer (5) and a sheath layer (6) from inside to outside.

2. The flame-retardant photoelectric composite cable capable of being repeatedly collected and released according to claim 1, wherein: the conductor (21) is formed by twisting soft round copper wires, and the conductor (21) is twisted by a small pitch-diameter ratio.

3. The flame-retardant photoelectric composite cable capable of being repeatedly collected and released according to claim 1, wherein: the insulating layer (22) is formed by extruding and wrapping a cross-linked polyolefin material.

4. The flame-retardant photoelectric composite cable capable of being repeatedly collected and released according to claim 1, wherein: the cable core cabling unit further comprises a filling rope (7), and the filling rope (7) is stranded with the insulation cable core and the optical fiber cable core together.

5. The flame-retardant photoelectric composite cable capable of being repeatedly collected and released according to claim 1, wherein: the flame-retardant wrapping tape layer (4) is formed by wrapping a glass fiber tape.

6. The flame-retardant photoelectric composite cable capable of being repeatedly collected and released according to claim 1, wherein: the braided layer (5) is formed by braiding tinned copper wires.

7. The flame-retardant photoelectric composite cable capable of being repeatedly collected and released according to claim 1, wherein: the sheath layer (6) is formed by extruding and wrapping halogen-free low-smoke high-flame-retardant polyolefin.

8. The flame-retardant photoelectric composite cable capable of being repeatedly collected and released according to claim 1, wherein: the optical fiber reinforcing layer (11) comprises a silica gel cladding layer (111) and a nylon tight cladding layer (112) which are sequentially coated outside the G652 single-mode optical fiber (10).

9. The repeatedly retractable flame-retardant photoelectric composite cable according to claim 8, wherein: the optical fiber outer protection layer (12) comprises an aramid fiber woven layer (121) woven outside the nylon tight cladding layer (112) and a fluoroplastic sheath (122) extruded outside the aramid fiber woven layer (121).