CN210489270U

CN210489270U - Armored double-sheath photoelectric composite cable

Info

Publication number: CN210489270U
Application number: CN201921835982.0U
Authority: CN
Inventors: 陈宁; 陈卫东; 张桂林; 张洪雷; 王江山; 任建飞; 丛晓红; 周双双; 王杨; 李夜城
Original assignee: Hongan Group Co Ltd
Current assignee: Hongan Group Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-05-08
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses an armored double-sheath photoelectric composite cable, which comprises a cable core, and a water-blocking layer, a reinforcing layer, an inner sheath layer, an armor layer and an outer sheath layer which are sequentially coated outside the cable core; the extending direction of water-blocking layer edge cable core is around the package the cable core outside, the enhancement layer indulge wrap in outside the water-blocking layer, the crowded package of inner sheath layer is in the enhancement layer outside, the inner sheath layer with the enhancement layer bonds together, the armor includes a plurality of armor steel wires, and is a plurality of the armor steel wire uses the cable core as the center, along its extending direction transposition in its periphery, the inner wall of oversheath layer is provided with curved buffering recess, the oversheath layer with leave the space between the armor. The utility model discloses a two sheath photoelectric composite cables of armor can be applicable to abominable environment, has the performance of stronger blocking water, fire-retardant, tensile, anti side pressure.

Description

Armored double-sheath photoelectric composite cable

Technical Field

The utility model relates to a cable field of making, concretely relates to two sheath photoelectric composite cables of armor.

Background

In recent years, with the implementation of broadband Chinese strategy, the network coverage is continuously expanded, the transmission and access capabilities are continuously enhanced, the broadband technology innovation is remarkably advanced, a complete industrial chain is basically formed, and the application service level is continuously improved.

The existing photoelectric hybrid cable has a simple structure, can only be suitable for a good environment and cannot meet the requirements of complex environments, such as subway channels, tunnels, remote mountainous areas and the like, water is often accumulated in the areas, soil and stones change and displace along with time and even collapse, and the existing photoelectric hybrid cable cannot meet the requirements of the complex environments completely.

Through the research in earlier stage, the mixed optical cable of photoelectricity that uses at present domestically is mostly the individual layer sheath, has a great deal of problem, for example: the installation and operation are inconvenient (difficult to peel and process); and the falling rocks generated during the construction of the mountainous area can often break the optical cable, seep water and limit other use and the like

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a two sheath photoelectric composite cable of armor can be applicable to abominable environment, has stronger block water, fire-retardant, tensile, anti side pressure's performance.

In order to solve the technical problem, the utility model provides an armored double-sheath photoelectric composite cable, which comprises a cable core, a water-blocking layer, a reinforcing layer, an inner sheath layer, an armor layer and an outer sheath layer, wherein the water-blocking layer, the reinforcing layer, the inner sheath layer, the armor layer and the outer sheath layer are sequentially coated outside the cable core; the extending direction of water-blocking layer edge cable core is around the package the cable core outside, the enhancement layer indulge wrap in outside the water-blocking layer, the crowded package of inner sheath layer is in the enhancement layer outside, the inner sheath layer with the enhancement layer bonds together, the armor includes a plurality of armor steel wires, and is a plurality of the armor steel wire uses the cable core as the center, along its extending direction transposition in its periphery, the inner wall of oversheath layer is provided with curved buffering recess, the oversheath layer with leave the space between the armor.

The utility model discloses a preferred embodiment, further include the cable core includes central reinforcement, optical unit, electric unit, the external diameter of optical unit and electric unit is the same, optical unit and electric unit interval transposition are in the central reinforcement outside.

In a preferred embodiment of the present invention, the central reinforcement is FRP or steel wire.

The utility model discloses a preferred embodiment, further include the optical unit includes a plurality of optic fibres, cladding pine sleeve pipe outside the optic fibre, the intussuseption of pine sleeve pipe is filled with the fine oleamen.

In a preferred embodiment of the present invention, the electrical unit further comprises a copper wire and an insulating layer covering the copper wire.

In a preferred embodiment of the present invention, the cable core further includes a filling rope, and the filling rope is disposed in a gap between the optical unit and the outside of the electrical unit.

The utility model discloses a preferred embodiment, further include the water blocking layer includes double-deck water-blocking tape and sets up the yarn that blocks water between double-deck water-blocking tape, double-deck water-blocking tape around the package overlap ratio be 15 ~ 25%.

In a preferred embodiment of the present invention, the inner sheath layer and the outer sheath layer are made of low smoke halogen-free flame retardant sheath material.

The utility model discloses a preferred embodiment, further include between inner sheath and the enhancement layer, all be provided with between armor and the outer sheath layer and tear the rope, tear the rope for red tearing.

The utility model has the advantages that:

1. the utility model discloses a radial water proof to the cable core has been realized around the package in the cable core outside to with the crowded package of inner sheath layer in the enhancement layer outside, make the inner sheath layer with the enhancement layer bonds together, prevents between water infiltration inner sheath layer and the enhancement layer, realized the vertical water proof to the cable core.

2. The utility model discloses a double-deck tensile protection and the double-deck sheath protection of enhancement layer, steel wire transposition armor have further promoted the tensile strength of optical cable.

3. The utility model discloses a be provided with curved buffering recess at outer restrictive coating inner wall, when the photoelectric composite cable receives lateral pressure, the buffering recess can play certain buffering effect, offsets partial lateral pressure, promotes holistic anti side pressure performance.

Drawings

Fig. 1 is an embodiment of an armored double-jacket optical-electrical composite cable according to the present invention;

fig. 2 is another embodiment of the armored double-jacket optical/electrical composite cable of the present invention.

The reference numbers in the figures illustrate: 1. a central reinforcement; 2. an optical fiber; 3. loosening the sleeve; 4. a copper wire; 5. an insulating layer; 6. a water resistant layer; 7. a reinforcing layer; 8. an inner jacket layer; 9. an armor layer; 10. an outer jacket layer; 11. a buffer groove; 12. tearing the rope; 13. and (6) filling the ropes.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1, an embodiment of the armored double-sheath photoelectric composite cable of the present invention includes a cable core, and a water blocking layer 6, a reinforcing layer 7, an inner sheath layer 8, an armor layer 9, and an outer sheath layer 10 sequentially coated outside the cable core; the waterproof layer 6 is wrapped on the outer side of the cable core along the extending direction of the cable core, the waterproof layer 6 is arranged to realize radial waterproof protection on the cable core, the reinforcing layer 7 is longitudinally wrapped outside the waterproof layer 6, the reinforcing layer 7 is a steel belt or an aluminum belt, the inner sheath layer 8 is extruded on the outer side of the reinforcing layer 7, the inner sheath layer 8 and the reinforcing layer 7 are bonded together, no gap exists between the inner sheath layer 8 and the reinforcing layer 7, water is prevented from permeating between the inner sheath layer 8 and the reinforcing layer 7, and longitudinal waterproof protection on the cable core is realized; the armor layer 9 comprises a plurality of armor steel wires, the armor steel wires are stranded around the cable core in the extending direction of the cable core, the steel wires are armored in a stranded mode due to the tensile property of the steel wires, the length of the steel wires is further increased relative to the length of the steel wires which are sheathed in parallel, and therefore the overall tensile property of the photoelectric composite cable is further improved, the inner wall of the outer sheath layer 10 is provided with an arc-shaped buffer groove 11, a gap is reserved between the outer sheath layer 10 and the armor layer 9, when the photoelectric composite cable is subjected to lateral pressure, the buffer groove 11 can play a certain buffer effect, partial lateral pressure is offset, and the overall lateral pressure resistance is improved.

Specifically, the cable core comprises a central reinforcement 1, optical units and electrical units, the optical units and the electrical units have the same outer diameter, and the optical units and the electrical units are twisted at intervals outside the central reinforcement 1, in this embodiment, the cable core has a four-unit structure and comprises two optical units and two electrical units,

referring to fig. 2, in another embodiment of the armored double-jacket photoelectric composite cable of the present invention, in this embodiment, the cable core has a six-unit structure, and includes three optical units and three electric units, and different optical units and different electric units can be set according to the demand condition in the actual production.

Specifically, in the two embodiments, the central reinforcement 1 is FRP or steel wire; the optical unit comprises a plurality of optical fibers 2 and a loose tube 3 coated outside the optical fibers 2, wherein a fiber ointment is filled in the loose tube 3, and the fiber ointment can play a water-blocking role in the loose tube 3 on one hand and play a buffer protection role for the optical fibers 2 on the other hand; the electrical unit comprises a copper wire 4 and an insulating layer 5 coated outside the copper wire 4.

In order to ensure the whole roundness of the cable core, the cable core also comprises a filling rope 13, and the filling rope 13 is arranged in a gap between the optical unit and the outer side of the electrical unit to fill the gap. The subsequent waterproof layer 6 is conveniently coated to prevent the cable core from bulging and deforming.

Specifically, the water-blocking layer 6 comprises double-layer water-blocking tapes and water-blocking yarns arranged between the double-layer water-blocking tapes, in the embodiment, three layers of water-blocking tapes, namely water-blocking tapes, water-blocking yarns and water-blocking tapes are adopted for blocking water, the wrapping overlapping rate of the double-layer water-blocking tapes is 15-25%, and the conditions that a cable core is exposed and a package is leaked are prevented.

Specifically, the inner sheath layer 8 and the outer sheath layer 10 are both made of a low-smoke halogen-free flame-retardant sheath material, and the smoke halogen-free flame-retardant sheath material is ultraviolet-resistant, waterproof, mildew-resistant and resistant to environmental stress cracking; and no acid gas is released, the soil in the surrounding area is not corroded, and the protective capability is higher.

In order to facilitate the stripping of the inner sheath layer 8 and the outer sheath layer 10 of the photoelectric composite cable in the construction process, the tearing ropes 12 are arranged between the inner sheath layer 8 and the reinforcing layer 7 and between the armor layer 9 and the outer sheath layer 10, when in construction, the inner sheath layer 8 and the outer sheath layer 10 can be torn along the tearing ropes 12 only by finding the tearing ropes 12, and the tearing ropes 12 in the construction are red tearing ropes which are clearly visible even if light is dim.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. An armored double-sheath photoelectric composite cable is characterized by comprising a cable core, and a water-blocking layer, a reinforcing layer, an inner sheath layer, an armor layer and an outer sheath layer which are sequentially coated outside the cable core; the extending direction of water-blocking layer edge cable core is around the package the cable core outside, the enhancement layer indulge wrap in outside the water-blocking layer, the crowded package of inner sheath layer is in the enhancement layer outside, the inner sheath layer with the enhancement layer bonds together, the armor includes a plurality of armor steel wires, and is a plurality of the armor steel wire uses the cable core as the center, along its extending direction transposition in its periphery, the inner wall of oversheath layer is provided with curved buffering recess, the oversheath layer with leave the space between the armor.

2. The armored double-jacket optical-electrical composite cable of claim 1, wherein the cable core comprises a central strength member, optical units and electrical units, the optical units and the electrical units have the same outer diameter, and the optical units and the electrical units are twisted at intervals outside the central strength member.

3. The armored double-jacket optical-electrical composite cable of claim 2, wherein the central strength member is FRP or steel wire.

4. The armored double-jacket optical-electrical composite cable of claim 2, wherein the optical unit comprises a plurality of optical fibers, and a loose tube covering the optical fibers, the loose tube being filled with a fiber ointment.

5. The armored double-jacket optical-electrical composite cable of claim 2, wherein the electrical elements comprise copper wires and an insulating layer covering the copper wires.

6. The armored double-jacket optical-electrical composite cable of claim 2, wherein the cable core further comprises a filler cord disposed in the space between the optical units and the outside of the electrical units.

7. The armored double-sheath photoelectric composite cable of claim 1, wherein the water-blocking layer comprises double-layer water-blocking tapes and water-blocking yarns arranged between the double-layer water-blocking tapes, and the wrapping overlapping rate of the double-layer water-blocking tapes is 15-25%.

8. The armored double-jacket optical-electrical composite cable of claim 1, wherein the inner jacket layer and the outer jacket layer are made of a low-smoke halogen-free flame-retardant jacket material.

9. The armored double-sheath photoelectric composite cable of claim 1, wherein tear cords are disposed between the inner sheath and the reinforcing layer and between the armor layer and the outer sheath layer, and the tear cords are red tear cords.